From c3c8d6f099c7d24f650016bc91611ec9f233e723 Mon Sep 17 00:00:00 2001
From: Rick Waldron <waldron.rick@gmail.com>
Date: Wed, 3 May 2017 11:03:51 -0400
Subject: [PATCH] for-await-of: dstr-binding, error, async func & async gen
templates
Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
---
.../for-await-of-async-func-const.template | 48 ++++++++++++
.../for-await-of-async-func-let.template | 48 ++++++++++++
.../for-await-of-async-func-var.template | 47 +++++++++++
.../for-await-of-async-gen-const.template | 48 ++++++++++++
.../error/for-await-of-async-gen-let.template | 47 +++++++++++
.../error/for-await-of-async-gen-var.template | 48 ++++++++++++
...c-func-dstr-const-ary-init-iter-get-err.js | 60 +++++++++++++++
...c-dstr-const-ary-ptrn-elem-ary-val-null.js | 67 ++++++++++++++++
...dstr-const-ary-ptrn-elem-id-init-throws.js | 58 ++++++++++++++
...onst-ary-ptrn-elem-id-init-unresolvable.js | 65 ++++++++++++++++
...tr-const-ary-ptrn-elem-id-iter-step-err.js | 66 ++++++++++++++++
...str-const-ary-ptrn-elem-id-iter-val-err.js | 77 +++++++++++++++++++
...c-dstr-const-ary-ptrn-elem-obj-val-null.js | 67 ++++++++++++++++
...-dstr-const-ary-ptrn-elem-obj-val-undef.js | 67 ++++++++++++++++
...nc-dstr-const-ary-ptrn-elision-step-err.js | 74 ++++++++++++++++++
...const-ary-ptrn-rest-id-elision-next-err.js | 60 +++++++++++++++
...tr-const-ary-ptrn-rest-id-iter-step-err.js | 71 +++++++++++++++++
...str-const-ary-ptrn-rest-id-iter-val-err.js | 73 ++++++++++++++++++
.../async-func-dstr-const-obj-init-null.js | 54 +++++++++++++
...sync-func-dstr-const-obj-init-undefined.js | 54 +++++++++++++
...nc-dstr-const-obj-ptrn-id-get-value-err.js | 61 +++++++++++++++
...func-dstr-const-obj-ptrn-id-init-throws.js | 61 +++++++++++++++
...str-const-obj-ptrn-id-init-unresolvable.js | 65 ++++++++++++++++
...async-func-dstr-const-obj-ptrn-list-err.js | 62 +++++++++++++++
...dstr-const-obj-ptrn-prop-ary-value-null.js | 56 ++++++++++++++
...-func-dstr-const-obj-ptrn-prop-eval-err.js | 58 ++++++++++++++
...tr-const-obj-ptrn-prop-id-get-value-err.js | 63 +++++++++++++++
...dstr-const-obj-ptrn-prop-id-init-throws.js | 61 +++++++++++++++
...onst-obj-ptrn-prop-id-init-unresolvable.js | 65 ++++++++++++++++
...dstr-const-obj-ptrn-prop-obj-value-null.js | 56 ++++++++++++++
...str-const-obj-ptrn-prop-obj-value-undef.js | 56 ++++++++++++++
...ync-func-dstr-let-ary-init-iter-get-err.js | 60 +++++++++++++++
...unc-dstr-let-ary-ptrn-elem-ary-val-null.js | 67 ++++++++++++++++
...c-dstr-let-ary-ptrn-elem-id-init-throws.js | 58 ++++++++++++++
...-let-ary-ptrn-elem-id-init-unresolvable.js | 65 ++++++++++++++++
...dstr-let-ary-ptrn-elem-id-iter-step-err.js | 66 ++++++++++++++++
...-dstr-let-ary-ptrn-elem-id-iter-val-err.js | 77 +++++++++++++++++++
...unc-dstr-let-ary-ptrn-elem-obj-val-null.js | 67 ++++++++++++++++
...nc-dstr-let-ary-ptrn-elem-obj-val-undef.js | 67 ++++++++++++++++
...func-dstr-let-ary-ptrn-elision-step-err.js | 74 ++++++++++++++++++
...r-let-ary-ptrn-rest-id-elision-next-err.js | 60 +++++++++++++++
...dstr-let-ary-ptrn-rest-id-iter-step-err.js | 71 +++++++++++++++++
...-dstr-let-ary-ptrn-rest-id-iter-val-err.js | 73 ++++++++++++++++++
.../async-func-dstr-let-obj-init-null.js | 54 +++++++++++++
.../async-func-dstr-let-obj-init-undefined.js | 54 +++++++++++++
...func-dstr-let-obj-ptrn-id-get-value-err.js | 61 +++++++++++++++
...c-func-dstr-let-obj-ptrn-id-init-throws.js | 61 +++++++++++++++
...-dstr-let-obj-ptrn-id-init-unresolvable.js | 65 ++++++++++++++++
.../async-func-dstr-let-obj-ptrn-list-err.js | 62 +++++++++++++++
...c-dstr-let-obj-ptrn-prop-ary-value-null.js | 56 ++++++++++++++
...nc-func-dstr-let-obj-ptrn-prop-eval-err.js | 58 ++++++++++++++
...dstr-let-obj-ptrn-prop-id-get-value-err.js | 63 +++++++++++++++
...c-dstr-let-obj-ptrn-prop-id-init-throws.js | 61 +++++++++++++++
...-let-obj-ptrn-prop-id-init-unresolvable.js | 65 ++++++++++++++++
...c-dstr-let-obj-ptrn-prop-obj-value-null.js | 56 ++++++++++++++
...-dstr-let-obj-ptrn-prop-obj-value-undef.js | 56 ++++++++++++++
...ync-func-dstr-var-ary-init-iter-get-err.js | 59 ++++++++++++++
...unc-dstr-var-ary-ptrn-elem-ary-val-null.js | 66 ++++++++++++++++
...c-dstr-var-ary-ptrn-elem-id-init-throws.js | 57 ++++++++++++++
...-var-ary-ptrn-elem-id-init-unresolvable.js | 64 +++++++++++++++
...dstr-var-ary-ptrn-elem-id-iter-step-err.js | 65 ++++++++++++++++
...-dstr-var-ary-ptrn-elem-id-iter-val-err.js | 76 ++++++++++++++++++
...unc-dstr-var-ary-ptrn-elem-obj-val-null.js | 66 ++++++++++++++++
...nc-dstr-var-ary-ptrn-elem-obj-val-undef.js | 66 ++++++++++++++++
...func-dstr-var-ary-ptrn-elision-step-err.js | 73 ++++++++++++++++++
...r-var-ary-ptrn-rest-id-elision-next-err.js | 59 ++++++++++++++
...dstr-var-ary-ptrn-rest-id-iter-step-err.js | 70 +++++++++++++++++
...-dstr-var-ary-ptrn-rest-id-iter-val-err.js | 72 +++++++++++++++++
.../async-func-dstr-var-obj-init-null.js | 53 +++++++++++++
.../async-func-dstr-var-obj-init-undefined.js | 53 +++++++++++++
...func-dstr-var-obj-ptrn-id-get-value-err.js | 60 +++++++++++++++
...c-func-dstr-var-obj-ptrn-id-init-throws.js | 60 +++++++++++++++
...-dstr-var-obj-ptrn-id-init-unresolvable.js | 64 +++++++++++++++
.../async-func-dstr-var-obj-ptrn-list-err.js | 61 +++++++++++++++
...c-dstr-var-obj-ptrn-prop-ary-value-null.js | 55 +++++++++++++
...nc-func-dstr-var-obj-ptrn-prop-eval-err.js | 57 ++++++++++++++
...dstr-var-obj-ptrn-prop-id-get-value-err.js | 62 +++++++++++++++
...c-dstr-var-obj-ptrn-prop-id-init-throws.js | 60 +++++++++++++++
...-var-obj-ptrn-prop-id-init-unresolvable.js | 64 +++++++++++++++
...c-dstr-var-obj-ptrn-prop-obj-value-null.js | 55 +++++++++++++
...-dstr-var-obj-ptrn-prop-obj-value-undef.js | 55 +++++++++++++
...nc-gen-dstr-const-ary-init-iter-get-err.js | 60 +++++++++++++++
...n-dstr-const-ary-ptrn-elem-ary-val-null.js | 67 ++++++++++++++++
...dstr-const-ary-ptrn-elem-id-init-throws.js | 58 ++++++++++++++
...onst-ary-ptrn-elem-id-init-unresolvable.js | 65 ++++++++++++++++
...tr-const-ary-ptrn-elem-id-iter-step-err.js | 66 ++++++++++++++++
...str-const-ary-ptrn-elem-id-iter-val-err.js | 77 +++++++++++++++++++
...n-dstr-const-ary-ptrn-elem-obj-val-null.js | 67 ++++++++++++++++
...-dstr-const-ary-ptrn-elem-obj-val-undef.js | 67 ++++++++++++++++
...en-dstr-const-ary-ptrn-elision-step-err.js | 74 ++++++++++++++++++
...const-ary-ptrn-rest-id-elision-next-err.js | 60 +++++++++++++++
...tr-const-ary-ptrn-rest-id-iter-step-err.js | 71 +++++++++++++++++
...str-const-ary-ptrn-rest-id-iter-val-err.js | 73 ++++++++++++++++++
.../async-gen-dstr-const-obj-init-null.js | 54 +++++++++++++
...async-gen-dstr-const-obj-init-undefined.js | 54 +++++++++++++
...en-dstr-const-obj-ptrn-id-get-value-err.js | 61 +++++++++++++++
...-gen-dstr-const-obj-ptrn-id-init-throws.js | 61 +++++++++++++++
...str-const-obj-ptrn-id-init-unresolvable.js | 65 ++++++++++++++++
.../async-gen-dstr-const-obj-ptrn-list-err.js | 62 +++++++++++++++
...dstr-const-obj-ptrn-prop-ary-value-null.js | 56 ++++++++++++++
...c-gen-dstr-const-obj-ptrn-prop-eval-err.js | 58 ++++++++++++++
...tr-const-obj-ptrn-prop-id-get-value-err.js | 63 +++++++++++++++
...dstr-const-obj-ptrn-prop-id-init-throws.js | 61 +++++++++++++++
...onst-obj-ptrn-prop-id-init-unresolvable.js | 65 ++++++++++++++++
...dstr-const-obj-ptrn-prop-obj-value-null.js | 56 ++++++++++++++
...str-const-obj-ptrn-prop-obj-value-undef.js | 56 ++++++++++++++
...sync-gen-dstr-let-ary-init-iter-get-err.js | 59 ++++++++++++++
...gen-dstr-let-ary-ptrn-elem-ary-val-null.js | 66 ++++++++++++++++
...n-dstr-let-ary-ptrn-elem-id-init-throws.js | 57 ++++++++++++++
...-let-ary-ptrn-elem-id-init-unresolvable.js | 64 +++++++++++++++
...dstr-let-ary-ptrn-elem-id-iter-step-err.js | 65 ++++++++++++++++
...-dstr-let-ary-ptrn-elem-id-iter-val-err.js | 76 ++++++++++++++++++
...gen-dstr-let-ary-ptrn-elem-obj-val-null.js | 66 ++++++++++++++++
...en-dstr-let-ary-ptrn-elem-obj-val-undef.js | 66 ++++++++++++++++
...-gen-dstr-let-ary-ptrn-elision-step-err.js | 73 ++++++++++++++++++
...r-let-ary-ptrn-rest-id-elision-next-err.js | 59 ++++++++++++++
...dstr-let-ary-ptrn-rest-id-iter-step-err.js | 70 +++++++++++++++++
...-dstr-let-ary-ptrn-rest-id-iter-val-err.js | 72 +++++++++++++++++
.../async-gen-dstr-let-obj-init-null.js | 53 +++++++++++++
.../async-gen-dstr-let-obj-init-undefined.js | 53 +++++++++++++
...-gen-dstr-let-obj-ptrn-id-get-value-err.js | 60 +++++++++++++++
...nc-gen-dstr-let-obj-ptrn-id-init-throws.js | 60 +++++++++++++++
...-dstr-let-obj-ptrn-id-init-unresolvable.js | 64 +++++++++++++++
.../async-gen-dstr-let-obj-ptrn-list-err.js | 61 +++++++++++++++
...n-dstr-let-obj-ptrn-prop-ary-value-null.js | 55 +++++++++++++
...ync-gen-dstr-let-obj-ptrn-prop-eval-err.js | 57 ++++++++++++++
...dstr-let-obj-ptrn-prop-id-get-value-err.js | 62 +++++++++++++++
...n-dstr-let-obj-ptrn-prop-id-init-throws.js | 60 +++++++++++++++
...-let-obj-ptrn-prop-id-init-unresolvable.js | 64 +++++++++++++++
...n-dstr-let-obj-ptrn-prop-obj-value-null.js | 55 +++++++++++++
...-dstr-let-obj-ptrn-prop-obj-value-undef.js | 55 +++++++++++++
...sync-gen-dstr-var-ary-init-iter-get-err.js | 60 +++++++++++++++
...gen-dstr-var-ary-ptrn-elem-ary-val-null.js | 67 ++++++++++++++++
...n-dstr-var-ary-ptrn-elem-id-init-throws.js | 58 ++++++++++++++
...-var-ary-ptrn-elem-id-init-unresolvable.js | 65 ++++++++++++++++
...dstr-var-ary-ptrn-elem-id-iter-step-err.js | 66 ++++++++++++++++
...-dstr-var-ary-ptrn-elem-id-iter-val-err.js | 77 +++++++++++++++++++
...gen-dstr-var-ary-ptrn-elem-obj-val-null.js | 67 ++++++++++++++++
...en-dstr-var-ary-ptrn-elem-obj-val-undef.js | 67 ++++++++++++++++
...-gen-dstr-var-ary-ptrn-elision-step-err.js | 74 ++++++++++++++++++
...r-var-ary-ptrn-rest-id-elision-next-err.js | 60 +++++++++++++++
...dstr-var-ary-ptrn-rest-id-iter-step-err.js | 71 +++++++++++++++++
...-dstr-var-ary-ptrn-rest-id-iter-val-err.js | 73 ++++++++++++++++++
.../async-gen-dstr-var-obj-init-null.js | 54 +++++++++++++
.../async-gen-dstr-var-obj-init-undefined.js | 54 +++++++++++++
...-gen-dstr-var-obj-ptrn-id-get-value-err.js | 61 +++++++++++++++
...nc-gen-dstr-var-obj-ptrn-id-init-throws.js | 61 +++++++++++++++
...-dstr-var-obj-ptrn-id-init-unresolvable.js | 65 ++++++++++++++++
.../async-gen-dstr-var-obj-ptrn-list-err.js | 62 +++++++++++++++
...n-dstr-var-obj-ptrn-prop-ary-value-null.js | 56 ++++++++++++++
...ync-gen-dstr-var-obj-ptrn-prop-eval-err.js | 58 ++++++++++++++
...dstr-var-obj-ptrn-prop-id-get-value-err.js | 63 +++++++++++++++
...n-dstr-var-obj-ptrn-prop-id-init-throws.js | 61 +++++++++++++++
...-var-obj-ptrn-prop-id-init-unresolvable.js | 65 ++++++++++++++++
...n-dstr-var-obj-ptrn-prop-obj-value-null.js | 56 ++++++++++++++
...-dstr-var-obj-ptrn-prop-obj-value-undef.js | 56 ++++++++++++++
156 files changed, 9698 insertions(+)
create mode 100644 src/dstr-binding/error/for-await-of-async-func-const.template
create mode 100644 src/dstr-binding/error/for-await-of-async-func-let.template
create mode 100644 src/dstr-binding/error/for-await-of-async-func-var.template
create mode 100644 src/dstr-binding/error/for-await-of-async-gen-const.template
create mode 100644 src/dstr-binding/error/for-await-of-async-gen-let.template
create mode 100644 src/dstr-binding/error/for-await-of-async-gen-var.template
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-init-iter-get-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-ary-val-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-obj-val-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-obj-val-undef.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elision-step-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-elision-next-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-init-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-init-undefined.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-list-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-ary-value-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-eval-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-obj-value-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-obj-value-undef.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-init-iter-get-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-ary-val-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-obj-val-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-obj-val-undef.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elision-step-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-elision-next-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-init-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-init-undefined.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-list-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-ary-value-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-eval-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-obj-value-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-obj-value-undef.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-init-iter-get-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-ary-val-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-obj-val-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-obj-val-undef.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elision-step-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-elision-next-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-init-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-init-undefined.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-list-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-ary-value-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-eval-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-obj-value-null.js
create mode 100644 test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-obj-value-undef.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-init-iter-get-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-ary-val-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-obj-val-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-obj-val-undef.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elision-step-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-elision-next-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-init-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-init-undefined.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-list-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-ary-value-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-eval-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-obj-value-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-obj-value-undef.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-init-iter-get-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-ary-val-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-obj-val-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-obj-val-undef.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elision-step-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-elision-next-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-init-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-init-undefined.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-list-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-ary-value-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-eval-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-obj-value-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-obj-value-undef.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-init-iter-get-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-ary-val-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-obj-val-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-obj-val-undef.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elision-step-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-elision-next-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-iter-step-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-iter-val-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-init-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-init-undefined.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-list-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-ary-value-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-eval-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-get-value-err.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-init-throws.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-init-unresolvable.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-obj-value-null.js
create mode 100644 test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-obj-value-undef.js
diff --git a/src/dstr-binding/error/for-await-of-async-func-const.template b/src/dstr-binding/error/for-await-of-async-func-const.template
new file mode 100644
index 0000000000..dc2fc2499b
--- /dev/null
+++ b/src/dstr-binding/error/for-await-of-async-func-const.template
@@ -0,0 +1,48 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+path: language/statements/for-await-of/async-func-dstr-const-
+name: for-await-of statement
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+
+async function fn() {
+ for await (const /*{ elems }*/ of [/*{ vals }*/]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => { throw new Test262Error("Expected async function to reject, but resolved."); }, ({ constructor }) => assert.sameValue(constructor, /*{ error }*/))
+ .then($DONE, $DONE);
+
diff --git a/src/dstr-binding/error/for-await-of-async-func-let.template b/src/dstr-binding/error/for-await-of-async-func-let.template
new file mode 100644
index 0000000000..291b51a648
--- /dev/null
+++ b/src/dstr-binding/error/for-await-of-async-func-let.template
@@ -0,0 +1,48 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+path: language/statements/for-await-of/async-func-dstr-let-
+name: for-await-of statement
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+
+async function fn() {
+ for await (let /*{ elems }*/ of [/*{ vals }*/]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => { throw new Test262Error("Expected async function to reject, but resolved."); }, ({ constructor }) => assert.sameValue(constructor, /*{ error }*/))
+ .then($DONE, $DONE);
+
diff --git a/src/dstr-binding/error/for-await-of-async-func-var.template b/src/dstr-binding/error/for-await-of-async-func-var.template
new file mode 100644
index 0000000000..ab9ae97124
--- /dev/null
+++ b/src/dstr-binding/error/for-await-of-async-func-var.template
@@ -0,0 +1,47 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+path: language/statements/for-await-of/async-func-dstr-var-
+name: for-await-of statement
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+
+async function fn() {
+ for await (var /*{ elems }*/ of [/*{ vals }*/]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => { throw new Test262Error("Expected async function to reject, but resolved."); }, ({ constructor }) => assert.sameValue(constructor, /*{ error }*/))
+ .then($DONE, $DONE);
diff --git a/src/dstr-binding/error/for-await-of-async-gen-const.template b/src/dstr-binding/error/for-await-of-async-gen-const.template
new file mode 100644
index 0000000000..4f4f2deb0f
--- /dev/null
+++ b/src/dstr-binding/error/for-await-of-async-gen-const.template
@@ -0,0 +1,48 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+path: language/statements/for-await-of/async-gen-dstr-const-
+name: for-await-of statement
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+
+async function * gen() {
+ for await (const /*{ elems }*/ of [/*{ vals }*/]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => { throw new Test262Error("Expected async function to reject, but resolved."); }, ({ constructor }) => assert.sameValue(constructor, /*{ error }*/))
+ .then($DONE, $DONE);
+
diff --git a/src/dstr-binding/error/for-await-of-async-gen-let.template b/src/dstr-binding/error/for-await-of-async-gen-let.template
new file mode 100644
index 0000000000..38c2f00fbc
--- /dev/null
+++ b/src/dstr-binding/error/for-await-of-async-gen-let.template
@@ -0,0 +1,47 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+path: language/statements/for-await-of/async-gen-dstr-let-
+name: for-await-of statement
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+
+async function * gen() {
+ for await (let /*{ elems }*/ of [/*{ vals }*/]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => { throw new Test262Error("Expected async function to reject, but resolved."); }, ({ constructor }) => assert.sameValue(constructor, /*{ error }*/))
+ .then($DONE, $DONE);
diff --git a/src/dstr-binding/error/for-await-of-async-gen-var.template b/src/dstr-binding/error/for-await-of-async-gen-var.template
new file mode 100644
index 0000000000..41f9d08a27
--- /dev/null
+++ b/src/dstr-binding/error/for-await-of-async-gen-var.template
@@ -0,0 +1,48 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+path: language/statements/for-await-of/async-gen-dstr-var-
+name: for-await-of statement
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+
+async function * gen() {
+ for await (var /*{ elems }*/ of [/*{ vals }*/]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => { throw new Test262Error("Expected async function to reject, but resolved."); }, ({ constructor }) => assert.sameValue(constructor, /*{ error }*/))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-init-iter-get-err.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-init-iter-get-err.js
new file mode 100644
index 0000000000..9da24dcf7e
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-init-iter-get-err.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-get-err.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Abrupt completion returned by GetIterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+ throw new Test262Error();
+};
+
+async function fn() {
+ for await (const [x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-ary-val-null.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-ary-val-null.js
new file mode 100644
index 0000000000..bb387d3285
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-ary-val-null.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-val-null.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Nested array destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+---*/
+
+async function fn() {
+ for await (const [[x]] of [[null]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-init-throws.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-init-throws.js
new file mode 100644
index 0000000000..bd15ae9270
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-init-throws.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Destructuring initializer returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+
+async function fn() {
+ for await (const [x = (function() { throw new Test262Error(); })()] of [[undefined]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-init-unresolvable.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-init-unresolvable.js
new file mode 100644
index 0000000000..699df9e6a7
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function fn() {
+ for await (const [ x = unresolvableReference ] of [[]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-iter-step-err.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-iter-step-err.js
new file mode 100644
index 0000000000..b0f6240e72
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-iter-step-err.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+---*/
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ throw new Test262Error();
+ }
+ };
+};
+
+async function fn() {
+ for await (const [x] of [g]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-iter-val-err.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-iter-val-err.js
new file mode 100644
index 0000000000..201883140d
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-id-iter-val-err.js
@@ -0,0 +1,77 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(v).
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function fn() {
+ for await (const [x] of [g]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-obj-val-null.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-obj-val-null.js
new file mode 100644
index 0000000000..5dbb8aae09
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-obj-val-null.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-null.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Nested object destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function fn() {
+ for await (const [{ x }] of [[null]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-obj-val-undef.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-obj-val-undef.js
new file mode 100644
index 0000000000..f57a737bfb
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elem-obj-val-undef.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-undef.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Nested object destructuring with a value of `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function fn() {
+ for await (const [{ x }] of [[]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elision-step-err.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elision-step-err.js
new file mode 100644
index 0000000000..fd42bfbe9b
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-elision-step-err.js
@@ -0,0 +1,74 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision-step-err.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Elision advances iterator and forwards abrupt completions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+
+---*/
+var following = 0;
+var iter =function* () {
+ throw new Test262Error();
+ following += 1;
+}();
+
+async function fn() {
+ for await (const [,] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+iter.next();
+assert.sameValue(following, 0, 'Iterator was properly closed.');
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-elision-next-err.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-elision-next-err.js
new file mode 100644
index 0000000000..3314200498
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-elision-next-err.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-elision-next-err.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Rest element following elision elements (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+ 1. If Elision is present, then
+ a. Let status be the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with
+ iteratorRecord as the argument.
+ b. ReturnIfAbrupt(status).
+ 2. Return the result of performing IteratorBindingInitialization for
+ BindingRestElement with iteratorRecord and environment as arguments.
+
+---*/
+var iter = (function*() { throw new Test262Error(); })();
+
+async function fn() {
+ for await (const [, ...x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-iter-step-err.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-iter-step-err.js
new file mode 100644
index 0000000000..5c428cb60b
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-iter-step-err.js
@@ -0,0 +1,71 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ a. If iteratorRecord.[[done]] is false,
+ i. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ ii. If next is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(next).
+
+---*/
+var first = 0;
+var second = 0;
+var iter = function*() {
+ first += 1;
+ throw new Test262Error();
+ second += 1;
+}();
+
+async function fn() {
+ for await (const [...x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+iter.next();
+assert.sameValue(first, 1);
+assert.sameValue(second, 0, 'Iterator is closed following abrupt completion.');
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-iter-val-err.js b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-iter-val-err.js
new file mode 100644
index 0000000000..3e8d5d7a67
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-ary-ptrn-rest-id-iter-val-err.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ c. Let nextValue be IteratorValue(next).
+ d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ e. ReturnIfAbrupt(nextValue).
+
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function fn() {
+ for await (const [...x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-init-null.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-init-null.js
new file mode 100644
index 0000000000..ea28e8223a
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-init-null.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-null.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (null) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function fn() {
+ for await (const {} of [null]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-init-undefined.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-init-undefined.js
new file mode 100644
index 0000000000..60afada464
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-init-undefined.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-undefined.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (undefined) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function fn() {
+ for await (const {} of [undefined]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-get-value-err.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-get-value-err.js
new file mode 100644
index 0000000000..e5f578fd10
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-get-value-err.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. Let v be GetV(value, propertyName).
+ 5. ReturnIfAbrupt(v).
+---*/
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function fn() {
+ for await (const { poisoned } of [poisonedProperty]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-init-throws.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-init-throws.js
new file mode 100644
index 0000000000..acf8199fc5
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-init-throws.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (const { x = thrower() } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-init-unresolvable.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-init-unresolvable.js
new file mode 100644
index 0000000000..160c8fd48e
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function fn() {
+ for await (const { x = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-list-err.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-list-err.js
new file mode 100644
index 0000000000..1354691d8e
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-list-err.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-list-err.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Binding property list evaluation is interrupted by an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPropertyList : BindingPropertyList , BindingProperty
+
+ 1. Let status be the result of performing BindingInitialization for
+ BindingPropertyList using value and environment as arguments.
+ 2. ReturnIfAbrupt(status).
+---*/
+var initCount = 0;
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (const { a, b = thrower(), c = ++initCount } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+assert.sameValue(initCount, 0);
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-ary-value-null.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-ary-value-null.js
new file mode 100644
index 0000000000..1bfc8b26af
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-ary-value-null.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-value-null.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Object binding pattern with "nested" array binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function fn() {
+ for await (const { w: [x, y, z] = [4, 5, 6] } of [{ w: null }]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-eval-err.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-eval-err.js
new file mode 100644
index 0000000000..560b7b727f
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-eval-err.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-eval-err.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Evaluation of property name returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingProperty : PropertyName : BindingElement
+
+ 1. Let P be the result of evaluating PropertyName
+ 2. ReturnIfAbrupt(P).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (const { [thrower()]: x } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-get-value-err.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-get-value-err.js
new file mode 100644
index 0000000000..2dd96d03bf
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-get-value-err.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. Let v be GetV(value, propertyName).
+ 2. ReturnIfAbrupt(v).
+---*/
+var initEvalCount = 0;
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function fn() {
+ for await (const { poisoned: x = ++initEvalCount } of [poisonedProperty]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+assert.sameValue(initEvalCount, 0);
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-init-throws.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-init-throws.js
new file mode 100644
index 0000000000..9b3445c284
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-init-throws.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (const { x: y = thrower() } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-init-unresolvable.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-init-unresolvable.js
new file mode 100644
index 0000000000..f8b2c3f3ae
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function fn() {
+ for await (const { x: y = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-obj-value-null.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-obj-value-null.js
new file mode 100644
index 0000000000..fc16686aa5
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-obj-value-null.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-null.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function fn() {
+ for await (const { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: null }]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-obj-value-undef.js b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-obj-value-undef.js
new file mode 100644
index 0000000000..90450b19cb
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-const-obj-ptrn-prop-obj-value-undef.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-undef.case
+// - src/dstr-binding/error/for-await-of-async-func-const.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function fn() {
+ for await (const { w: { x, y, z } = undefined } of [{ }]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-init-iter-get-err.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-init-iter-get-err.js
new file mode 100644
index 0000000000..12b62c4772
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-init-iter-get-err.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-get-err.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Abrupt completion returned by GetIterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+ throw new Test262Error();
+};
+
+async function fn() {
+ for await (let [x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-ary-val-null.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-ary-val-null.js
new file mode 100644
index 0000000000..b87926ec43
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-ary-val-null.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-val-null.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Nested array destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+---*/
+
+async function fn() {
+ for await (let [[x]] of [[null]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-init-throws.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-init-throws.js
new file mode 100644
index 0000000000..f9b468dac1
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-init-throws.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Destructuring initializer returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+
+async function fn() {
+ for await (let [x = (function() { throw new Test262Error(); })()] of [[undefined]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-init-unresolvable.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-init-unresolvable.js
new file mode 100644
index 0000000000..d683743e9c
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function fn() {
+ for await (let [ x = unresolvableReference ] of [[]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-iter-step-err.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-iter-step-err.js
new file mode 100644
index 0000000000..42e47aa5bd
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-iter-step-err.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+---*/
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ throw new Test262Error();
+ }
+ };
+};
+
+async function fn() {
+ for await (let [x] of [g]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-iter-val-err.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-iter-val-err.js
new file mode 100644
index 0000000000..ebf0dbe427
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-id-iter-val-err.js
@@ -0,0 +1,77 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(v).
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function fn() {
+ for await (let [x] of [g]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-obj-val-null.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-obj-val-null.js
new file mode 100644
index 0000000000..3e9dcbe7cd
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-obj-val-null.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-null.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Nested object destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function fn() {
+ for await (let [{ x }] of [[null]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-obj-val-undef.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-obj-val-undef.js
new file mode 100644
index 0000000000..10178b11e8
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elem-obj-val-undef.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-undef.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Nested object destructuring with a value of `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function fn() {
+ for await (let [{ x }] of [[]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elision-step-err.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elision-step-err.js
new file mode 100644
index 0000000000..1cf324585c
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-elision-step-err.js
@@ -0,0 +1,74 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision-step-err.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Elision advances iterator and forwards abrupt completions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+
+---*/
+var following = 0;
+var iter =function* () {
+ throw new Test262Error();
+ following += 1;
+}();
+
+async function fn() {
+ for await (let [,] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+iter.next();
+assert.sameValue(following, 0, 'Iterator was properly closed.');
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-elision-next-err.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-elision-next-err.js
new file mode 100644
index 0000000000..73ccf728c4
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-elision-next-err.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-elision-next-err.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Rest element following elision elements (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+ 1. If Elision is present, then
+ a. Let status be the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with
+ iteratorRecord as the argument.
+ b. ReturnIfAbrupt(status).
+ 2. Return the result of performing IteratorBindingInitialization for
+ BindingRestElement with iteratorRecord and environment as arguments.
+
+---*/
+var iter = (function*() { throw new Test262Error(); })();
+
+async function fn() {
+ for await (let [, ...x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-iter-step-err.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-iter-step-err.js
new file mode 100644
index 0000000000..9bc64fa008
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-iter-step-err.js
@@ -0,0 +1,71 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ a. If iteratorRecord.[[done]] is false,
+ i. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ ii. If next is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(next).
+
+---*/
+var first = 0;
+var second = 0;
+var iter = function*() {
+ first += 1;
+ throw new Test262Error();
+ second += 1;
+}();
+
+async function fn() {
+ for await (let [...x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+iter.next();
+assert.sameValue(first, 1);
+assert.sameValue(second, 0, 'Iterator is closed following abrupt completion.');
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-iter-val-err.js b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-iter-val-err.js
new file mode 100644
index 0000000000..511fa2bb47
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-ary-ptrn-rest-id-iter-val-err.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ c. Let nextValue be IteratorValue(next).
+ d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ e. ReturnIfAbrupt(nextValue).
+
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function fn() {
+ for await (let [...x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-init-null.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-init-null.js
new file mode 100644
index 0000000000..955bd17e83
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-init-null.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-null.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (null) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function fn() {
+ for await (let {} of [null]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-init-undefined.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-init-undefined.js
new file mode 100644
index 0000000000..450b7227f2
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-init-undefined.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-undefined.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (undefined) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function fn() {
+ for await (let {} of [undefined]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-get-value-err.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-get-value-err.js
new file mode 100644
index 0000000000..1e77d91be6
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-get-value-err.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. Let v be GetV(value, propertyName).
+ 5. ReturnIfAbrupt(v).
+---*/
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function fn() {
+ for await (let { poisoned } of [poisonedProperty]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-init-throws.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-init-throws.js
new file mode 100644
index 0000000000..3fbf30fb2d
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-init-throws.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (let { x = thrower() } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-init-unresolvable.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-init-unresolvable.js
new file mode 100644
index 0000000000..180a4bf765
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function fn() {
+ for await (let { x = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-list-err.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-list-err.js
new file mode 100644
index 0000000000..e52ef1ce70
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-list-err.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-list-err.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Binding property list evaluation is interrupted by an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPropertyList : BindingPropertyList , BindingProperty
+
+ 1. Let status be the result of performing BindingInitialization for
+ BindingPropertyList using value and environment as arguments.
+ 2. ReturnIfAbrupt(status).
+---*/
+var initCount = 0;
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (let { a, b = thrower(), c = ++initCount } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+assert.sameValue(initCount, 0);
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-ary-value-null.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-ary-value-null.js
new file mode 100644
index 0000000000..9e5b06c3f9
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-ary-value-null.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-value-null.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Object binding pattern with "nested" array binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function fn() {
+ for await (let { w: [x, y, z] = [4, 5, 6] } of [{ w: null }]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-eval-err.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-eval-err.js
new file mode 100644
index 0000000000..783753532d
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-eval-err.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-eval-err.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Evaluation of property name returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingProperty : PropertyName : BindingElement
+
+ 1. Let P be the result of evaluating PropertyName
+ 2. ReturnIfAbrupt(P).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (let { [thrower()]: x } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-get-value-err.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-get-value-err.js
new file mode 100644
index 0000000000..426855dcac
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-get-value-err.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. Let v be GetV(value, propertyName).
+ 2. ReturnIfAbrupt(v).
+---*/
+var initEvalCount = 0;
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function fn() {
+ for await (let { poisoned: x = ++initEvalCount } of [poisonedProperty]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+assert.sameValue(initEvalCount, 0);
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-init-throws.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-init-throws.js
new file mode 100644
index 0000000000..9c769ad08e
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-init-throws.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (let { x: y = thrower() } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-init-unresolvable.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-init-unresolvable.js
new file mode 100644
index 0000000000..31ecf590f7
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function fn() {
+ for await (let { x: y = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-obj-value-null.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-obj-value-null.js
new file mode 100644
index 0000000000..214ab9ad23
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-obj-value-null.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-null.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function fn() {
+ for await (let { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: null }]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-obj-value-undef.js b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-obj-value-undef.js
new file mode 100644
index 0000000000..83d4fe737b
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-let-obj-ptrn-prop-obj-value-undef.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-undef.case
+// - src/dstr-binding/error/for-await-of-async-func-let.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function fn() {
+ for await (let { w: { x, y, z } = undefined } of [{ }]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-init-iter-get-err.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-init-iter-get-err.js
new file mode 100644
index 0000000000..cfa5cb4bfe
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-init-iter-get-err.js
@@ -0,0 +1,59 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-get-err.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Abrupt completion returned by GetIterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+ throw new Test262Error();
+};
+
+async function fn() {
+ for await (var [x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-ary-val-null.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-ary-val-null.js
new file mode 100644
index 0000000000..6d255ef275
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-ary-val-null.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-val-null.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Nested array destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+---*/
+
+async function fn() {
+ for await (var [[x]] of [[null]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-init-throws.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-init-throws.js
new file mode 100644
index 0000000000..50dfb1f4a4
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-init-throws.js
@@ -0,0 +1,57 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Destructuring initializer returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+
+async function fn() {
+ for await (var [x = (function() { throw new Test262Error(); })()] of [[undefined]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-init-unresolvable.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-init-unresolvable.js
new file mode 100644
index 0000000000..8843287483
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-init-unresolvable.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function fn() {
+ for await (var [ x = unresolvableReference ] of [[]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-iter-step-err.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-iter-step-err.js
new file mode 100644
index 0000000000..6ec536b76c
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-iter-step-err.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+---*/
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ throw new Test262Error();
+ }
+ };
+};
+
+async function fn() {
+ for await (var [x] of [g]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-iter-val-err.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-iter-val-err.js
new file mode 100644
index 0000000000..e9ffc53df2
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-id-iter-val-err.js
@@ -0,0 +1,76 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(v).
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function fn() {
+ for await (var [x] of [g]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-obj-val-null.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-obj-val-null.js
new file mode 100644
index 0000000000..441e5083d3
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-obj-val-null.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-null.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Nested object destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function fn() {
+ for await (var [{ x }] of [[null]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-obj-val-undef.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-obj-val-undef.js
new file mode 100644
index 0000000000..f0c5f2a395
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elem-obj-val-undef.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-undef.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Nested object destructuring with a value of `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function fn() {
+ for await (var [{ x }] of [[]]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elision-step-err.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elision-step-err.js
new file mode 100644
index 0000000000..e479c08304
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-elision-step-err.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision-step-err.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Elision advances iterator and forwards abrupt completions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+
+---*/
+var following = 0;
+var iter =function* () {
+ throw new Test262Error();
+ following += 1;
+}();
+
+async function fn() {
+ for await (var [,] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+iter.next();
+assert.sameValue(following, 0, 'Iterator was properly closed.');
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-elision-next-err.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-elision-next-err.js
new file mode 100644
index 0000000000..11d946d86b
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-elision-next-err.js
@@ -0,0 +1,59 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-elision-next-err.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Rest element following elision elements (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+ 1. If Elision is present, then
+ a. Let status be the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with
+ iteratorRecord as the argument.
+ b. ReturnIfAbrupt(status).
+ 2. Return the result of performing IteratorBindingInitialization for
+ BindingRestElement with iteratorRecord and environment as arguments.
+
+---*/
+var iter = (function*() { throw new Test262Error(); })();
+
+async function fn() {
+ for await (var [, ...x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-iter-step-err.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-iter-step-err.js
new file mode 100644
index 0000000000..0505025f63
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-iter-step-err.js
@@ -0,0 +1,70 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ a. If iteratorRecord.[[done]] is false,
+ i. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ ii. If next is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(next).
+
+---*/
+var first = 0;
+var second = 0;
+var iter = function*() {
+ first += 1;
+ throw new Test262Error();
+ second += 1;
+}();
+
+async function fn() {
+ for await (var [...x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+iter.next();
+assert.sameValue(first, 1);
+assert.sameValue(second, 0, 'Iterator is closed following abrupt completion.');
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-iter-val-err.js b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-iter-val-err.js
new file mode 100644
index 0000000000..db39511b8a
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-ary-ptrn-rest-id-iter-val-err.js
@@ -0,0 +1,72 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ c. Let nextValue be IteratorValue(next).
+ d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ e. ReturnIfAbrupt(nextValue).
+
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function fn() {
+ for await (var [...x] of [iter]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-init-null.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-init-null.js
new file mode 100644
index 0000000000..09d1a4ecce
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-init-null.js
@@ -0,0 +1,53 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-null.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (null) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function fn() {
+ for await (var {} of [null]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-init-undefined.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-init-undefined.js
new file mode 100644
index 0000000000..c088bb341c
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-init-undefined.js
@@ -0,0 +1,53 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-undefined.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (undefined) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function fn() {
+ for await (var {} of [undefined]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-get-value-err.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-get-value-err.js
new file mode 100644
index 0000000000..5c5902f244
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-get-value-err.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. Let v be GetV(value, propertyName).
+ 5. ReturnIfAbrupt(v).
+---*/
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function fn() {
+ for await (var { poisoned } of [poisonedProperty]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-init-throws.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-init-throws.js
new file mode 100644
index 0000000000..4b220333ed
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-init-throws.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (var { x = thrower() } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-init-unresolvable.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-init-unresolvable.js
new file mode 100644
index 0000000000..291a8cc4da
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-id-init-unresolvable.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function fn() {
+ for await (var { x = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-list-err.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-list-err.js
new file mode 100644
index 0000000000..bcf36faf02
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-list-err.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-list-err.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Binding property list evaluation is interrupted by an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPropertyList : BindingPropertyList , BindingProperty
+
+ 1. Let status be the result of performing BindingInitialization for
+ BindingPropertyList using value and environment as arguments.
+ 2. ReturnIfAbrupt(status).
+---*/
+var initCount = 0;
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (var { a, b = thrower(), c = ++initCount } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+assert.sameValue(initCount, 0);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-ary-value-null.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-ary-value-null.js
new file mode 100644
index 0000000000..93646baf3d
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-ary-value-null.js
@@ -0,0 +1,55 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-value-null.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Object binding pattern with "nested" array binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function fn() {
+ for await (var { w: [x, y, z] = [4, 5, 6] } of [{ w: null }]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-eval-err.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-eval-err.js
new file mode 100644
index 0000000000..d680fe914d
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-eval-err.js
@@ -0,0 +1,57 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-eval-err.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Evaluation of property name returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingProperty : PropertyName : BindingElement
+
+ 1. Let P be the result of evaluating PropertyName
+ 2. ReturnIfAbrupt(P).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (var { [thrower()]: x } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-get-value-err.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-get-value-err.js
new file mode 100644
index 0000000000..e23a739d40
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-get-value-err.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. Let v be GetV(value, propertyName).
+ 2. ReturnIfAbrupt(v).
+---*/
+var initEvalCount = 0;
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function fn() {
+ for await (var { poisoned: x = ++initEvalCount } of [poisonedProperty]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+assert.sameValue(initEvalCount, 0);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-init-throws.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-init-throws.js
new file mode 100644
index 0000000000..8c7240cde4
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-init-throws.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function fn() {
+ for await (var { x: y = thrower() } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-init-unresolvable.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-init-unresolvable.js
new file mode 100644
index 0000000000..a31720a485
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-id-init-unresolvable.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function fn() {
+ for await (var { x: y = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-obj-value-null.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-obj-value-null.js
new file mode 100644
index 0000000000..6f90b69395
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-obj-value-null.js
@@ -0,0 +1,55 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-null.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function fn() {
+ for await (var { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: null }]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-obj-value-undef.js b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-obj-value-undef.js
new file mode 100644
index 0000000000..8c8036684b
--- /dev/null
+++ b/test/language/statements/for-await-of/async-func-dstr-var-obj-ptrn-prop-obj-value-undef.js
@@ -0,0 +1,55 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-undef.case
+// - src/dstr-binding/error/for-await-of-async-func-var.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function fn() {
+ for await (var { w: { x, y, z } = undefined } of [{ }]) {
+ return;
+ }
+}
+
+fn()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-init-iter-get-err.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-init-iter-get-err.js
new file mode 100644
index 0000000000..1862861721
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-init-iter-get-err.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-get-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Abrupt completion returned by GetIterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+ throw new Test262Error();
+};
+
+async function * gen() {
+ for await (const [x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-ary-val-null.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-ary-val-null.js
new file mode 100644
index 0000000000..a3a90b88fa
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-ary-val-null.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-val-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Nested array destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+---*/
+
+async function * gen() {
+ for await (const [[x]] of [[null]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-init-throws.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-init-throws.js
new file mode 100644
index 0000000000..8c0e96fba6
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-init-throws.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Destructuring initializer returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+
+async function * gen() {
+ for await (const [x = (function() { throw new Test262Error(); })()] of [[undefined]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-init-unresolvable.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-init-unresolvable.js
new file mode 100644
index 0000000000..a2d02f2c16
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function * gen() {
+ for await (const [ x = unresolvableReference ] of [[]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-iter-step-err.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-iter-step-err.js
new file mode 100644
index 0000000000..eb45be31ce
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-iter-step-err.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+---*/
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ throw new Test262Error();
+ }
+ };
+};
+
+async function * gen() {
+ for await (const [x] of [g]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-iter-val-err.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-iter-val-err.js
new file mode 100644
index 0000000000..f22a8b721e
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-id-iter-val-err.js
@@ -0,0 +1,77 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(v).
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function * gen() {
+ for await (const [x] of [g]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-obj-val-null.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-obj-val-null.js
new file mode 100644
index 0000000000..72157c912b
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-obj-val-null.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Nested object destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function * gen() {
+ for await (const [{ x }] of [[null]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-obj-val-undef.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-obj-val-undef.js
new file mode 100644
index 0000000000..60ea181cee
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elem-obj-val-undef.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-undef.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Nested object destructuring with a value of `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function * gen() {
+ for await (const [{ x }] of [[]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elision-step-err.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elision-step-err.js
new file mode 100644
index 0000000000..d4704ce5ec
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-elision-step-err.js
@@ -0,0 +1,74 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision-step-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Elision advances iterator and forwards abrupt completions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+
+---*/
+var following = 0;
+var iter =function* () {
+ throw new Test262Error();
+ following += 1;
+}();
+
+async function * gen() {
+ for await (const [,] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+iter.next();
+assert.sameValue(following, 0, 'Iterator was properly closed.');
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-elision-next-err.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-elision-next-err.js
new file mode 100644
index 0000000000..58ffcd6f64
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-elision-next-err.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-elision-next-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Rest element following elision elements (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+ 1. If Elision is present, then
+ a. Let status be the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with
+ iteratorRecord as the argument.
+ b. ReturnIfAbrupt(status).
+ 2. Return the result of performing IteratorBindingInitialization for
+ BindingRestElement with iteratorRecord and environment as arguments.
+
+---*/
+var iter = (function*() { throw new Test262Error(); })();
+
+async function * gen() {
+ for await (const [, ...x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-iter-step-err.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-iter-step-err.js
new file mode 100644
index 0000000000..57dd0e59cd
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-iter-step-err.js
@@ -0,0 +1,71 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ a. If iteratorRecord.[[done]] is false,
+ i. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ ii. If next is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(next).
+
+---*/
+var first = 0;
+var second = 0;
+var iter = function*() {
+ first += 1;
+ throw new Test262Error();
+ second += 1;
+}();
+
+async function * gen() {
+ for await (const [...x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+iter.next();
+assert.sameValue(first, 1);
+assert.sameValue(second, 0, 'Iterator is closed following abrupt completion.');
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-iter-val-err.js b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-iter-val-err.js
new file mode 100644
index 0000000000..182e1242b1
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-ary-ptrn-rest-id-iter-val-err.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ c. Let nextValue be IteratorValue(next).
+ d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ e. ReturnIfAbrupt(nextValue).
+
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function * gen() {
+ for await (const [...x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-init-null.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-init-null.js
new file mode 100644
index 0000000000..f033632b8a
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-init-null.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (null) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function * gen() {
+ for await (const {} of [null]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-init-undefined.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-init-undefined.js
new file mode 100644
index 0000000000..122c83a140
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-init-undefined.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-undefined.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (undefined) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function * gen() {
+ for await (const {} of [undefined]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-get-value-err.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-get-value-err.js
new file mode 100644
index 0000000000..7453f3c166
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-get-value-err.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. Let v be GetV(value, propertyName).
+ 5. ReturnIfAbrupt(v).
+---*/
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function * gen() {
+ for await (const { poisoned } of [poisonedProperty]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-init-throws.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-init-throws.js
new file mode 100644
index 0000000000..3ddbba3de5
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-init-throws.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (const { x = thrower() } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-init-unresolvable.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-init-unresolvable.js
new file mode 100644
index 0000000000..e608f96f39
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function * gen() {
+ for await (const { x = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-list-err.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-list-err.js
new file mode 100644
index 0000000000..c902df24b8
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-list-err.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-list-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Binding property list evaluation is interrupted by an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPropertyList : BindingPropertyList , BindingProperty
+
+ 1. Let status be the result of performing BindingInitialization for
+ BindingPropertyList using value and environment as arguments.
+ 2. ReturnIfAbrupt(status).
+---*/
+var initCount = 0;
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (const { a, b = thrower(), c = ++initCount } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+assert.sameValue(initCount, 0);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-ary-value-null.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-ary-value-null.js
new file mode 100644
index 0000000000..08361ef67a
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-ary-value-null.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-value-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Object binding pattern with "nested" array binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function * gen() {
+ for await (const { w: [x, y, z] = [4, 5, 6] } of [{ w: null }]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-eval-err.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-eval-err.js
new file mode 100644
index 0000000000..39e7585c8d
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-eval-err.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-eval-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Evaluation of property name returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingProperty : PropertyName : BindingElement
+
+ 1. Let P be the result of evaluating PropertyName
+ 2. ReturnIfAbrupt(P).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (const { [thrower()]: x } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-get-value-err.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-get-value-err.js
new file mode 100644
index 0000000000..ac75fdbaac
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-get-value-err.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. Let v be GetV(value, propertyName).
+ 2. ReturnIfAbrupt(v).
+---*/
+var initEvalCount = 0;
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function * gen() {
+ for await (const { poisoned: x = ++initEvalCount } of [poisonedProperty]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+assert.sameValue(initEvalCount, 0);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-init-throws.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-init-throws.js
new file mode 100644
index 0000000000..ec2c87bd53
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-init-throws.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (const { x: y = thrower() } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-init-unresolvable.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-init-unresolvable.js
new file mode 100644
index 0000000000..1e579b0266
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function * gen() {
+ for await (const { x: y = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-obj-value-null.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-obj-value-null.js
new file mode 100644
index 0000000000..e1870cbe3d
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-obj-value-null.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function * gen() {
+ for await (const { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: null }]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-obj-value-undef.js b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-obj-value-undef.js
new file mode 100644
index 0000000000..db09efb8f6
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-const-obj-ptrn-prop-obj-value-undef.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-undef.case
+// - src/dstr-binding/error/for-await-of-async-gen-const.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function * gen() {
+ for await (const { w: { x, y, z } = undefined } of [{ }]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-init-iter-get-err.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-init-iter-get-err.js
new file mode 100644
index 0000000000..46741b80e0
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-init-iter-get-err.js
@@ -0,0 +1,59 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-get-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Abrupt completion returned by GetIterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+ throw new Test262Error();
+};
+
+async function * gen() {
+ for await (let [x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-ary-val-null.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-ary-val-null.js
new file mode 100644
index 0000000000..8cb11d7d93
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-ary-val-null.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-val-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Nested array destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+---*/
+
+async function * gen() {
+ for await (let [[x]] of [[null]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-init-throws.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-init-throws.js
new file mode 100644
index 0000000000..d5cd68a9d6
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-init-throws.js
@@ -0,0 +1,57 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Destructuring initializer returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+
+async function * gen() {
+ for await (let [x = (function() { throw new Test262Error(); })()] of [[undefined]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-init-unresolvable.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-init-unresolvable.js
new file mode 100644
index 0000000000..9c2d1f4e0c
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-init-unresolvable.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function * gen() {
+ for await (let [ x = unresolvableReference ] of [[]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-iter-step-err.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-iter-step-err.js
new file mode 100644
index 0000000000..1329aeb034
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-iter-step-err.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+---*/
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ throw new Test262Error();
+ }
+ };
+};
+
+async function * gen() {
+ for await (let [x] of [g]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-iter-val-err.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-iter-val-err.js
new file mode 100644
index 0000000000..ac90a30a4f
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-id-iter-val-err.js
@@ -0,0 +1,76 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(v).
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function * gen() {
+ for await (let [x] of [g]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-obj-val-null.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-obj-val-null.js
new file mode 100644
index 0000000000..01423ae155
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-obj-val-null.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Nested object destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function * gen() {
+ for await (let [{ x }] of [[null]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-obj-val-undef.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-obj-val-undef.js
new file mode 100644
index 0000000000..6af6d06f55
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elem-obj-val-undef.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-undef.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Nested object destructuring with a value of `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function * gen() {
+ for await (let [{ x }] of [[]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elision-step-err.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elision-step-err.js
new file mode 100644
index 0000000000..b5a858877c
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-elision-step-err.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision-step-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Elision advances iterator and forwards abrupt completions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+
+---*/
+var following = 0;
+var iter =function* () {
+ throw new Test262Error();
+ following += 1;
+}();
+
+async function * gen() {
+ for await (let [,] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+iter.next();
+assert.sameValue(following, 0, 'Iterator was properly closed.');
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-elision-next-err.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-elision-next-err.js
new file mode 100644
index 0000000000..fba96bfa78
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-elision-next-err.js
@@ -0,0 +1,59 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-elision-next-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Rest element following elision elements (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+ 1. If Elision is present, then
+ a. Let status be the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with
+ iteratorRecord as the argument.
+ b. ReturnIfAbrupt(status).
+ 2. Return the result of performing IteratorBindingInitialization for
+ BindingRestElement with iteratorRecord and environment as arguments.
+
+---*/
+var iter = (function*() { throw new Test262Error(); })();
+
+async function * gen() {
+ for await (let [, ...x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-iter-step-err.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-iter-step-err.js
new file mode 100644
index 0000000000..cadf333dab
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-iter-step-err.js
@@ -0,0 +1,70 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ a. If iteratorRecord.[[done]] is false,
+ i. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ ii. If next is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(next).
+
+---*/
+var first = 0;
+var second = 0;
+var iter = function*() {
+ first += 1;
+ throw new Test262Error();
+ second += 1;
+}();
+
+async function * gen() {
+ for await (let [...x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+iter.next();
+assert.sameValue(first, 1);
+assert.sameValue(second, 0, 'Iterator is closed following abrupt completion.');
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-iter-val-err.js b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-iter-val-err.js
new file mode 100644
index 0000000000..251a49afb7
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-ary-ptrn-rest-id-iter-val-err.js
@@ -0,0 +1,72 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ c. Let nextValue be IteratorValue(next).
+ d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ e. ReturnIfAbrupt(nextValue).
+
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function * gen() {
+ for await (let [...x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-init-null.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-init-null.js
new file mode 100644
index 0000000000..4c1b77e1a7
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-init-null.js
@@ -0,0 +1,53 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (null) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function * gen() {
+ for await (let {} of [null]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-init-undefined.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-init-undefined.js
new file mode 100644
index 0000000000..31254fe61c
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-init-undefined.js
@@ -0,0 +1,53 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-undefined.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (undefined) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function * gen() {
+ for await (let {} of [undefined]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-get-value-err.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-get-value-err.js
new file mode 100644
index 0000000000..02e34625eb
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-get-value-err.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. Let v be GetV(value, propertyName).
+ 5. ReturnIfAbrupt(v).
+---*/
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function * gen() {
+ for await (let { poisoned } of [poisonedProperty]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-init-throws.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-init-throws.js
new file mode 100644
index 0000000000..b769bf1032
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-init-throws.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (let { x = thrower() } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-init-unresolvable.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-init-unresolvable.js
new file mode 100644
index 0000000000..6ef453222a
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-id-init-unresolvable.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function * gen() {
+ for await (let { x = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-list-err.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-list-err.js
new file mode 100644
index 0000000000..c4fa1f25ae
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-list-err.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-list-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Binding property list evaluation is interrupted by an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPropertyList : BindingPropertyList , BindingProperty
+
+ 1. Let status be the result of performing BindingInitialization for
+ BindingPropertyList using value and environment as arguments.
+ 2. ReturnIfAbrupt(status).
+---*/
+var initCount = 0;
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (let { a, b = thrower(), c = ++initCount } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+assert.sameValue(initCount, 0);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-ary-value-null.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-ary-value-null.js
new file mode 100644
index 0000000000..3c32db5539
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-ary-value-null.js
@@ -0,0 +1,55 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-value-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Object binding pattern with "nested" array binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function * gen() {
+ for await (let { w: [x, y, z] = [4, 5, 6] } of [{ w: null }]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-eval-err.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-eval-err.js
new file mode 100644
index 0000000000..3cf4177b6a
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-eval-err.js
@@ -0,0 +1,57 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-eval-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Evaluation of property name returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingProperty : PropertyName : BindingElement
+
+ 1. Let P be the result of evaluating PropertyName
+ 2. ReturnIfAbrupt(P).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (let { [thrower()]: x } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-get-value-err.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-get-value-err.js
new file mode 100644
index 0000000000..1692345a66
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-get-value-err.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. Let v be GetV(value, propertyName).
+ 2. ReturnIfAbrupt(v).
+---*/
+var initEvalCount = 0;
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function * gen() {
+ for await (let { poisoned: x = ++initEvalCount } of [poisonedProperty]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+assert.sameValue(initEvalCount, 0);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-init-throws.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-init-throws.js
new file mode 100644
index 0000000000..3271a5dfa9
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-init-throws.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (let { x: y = thrower() } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-init-unresolvable.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-init-unresolvable.js
new file mode 100644
index 0000000000..e831ea42e6
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-id-init-unresolvable.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function * gen() {
+ for await (let { x: y = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-obj-value-null.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-obj-value-null.js
new file mode 100644
index 0000000000..e23a1bb9e9
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-obj-value-null.js
@@ -0,0 +1,55 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function * gen() {
+ for await (let { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: null }]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-obj-value-undef.js b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-obj-value-undef.js
new file mode 100644
index 0000000000..82e71ea931
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-let-obj-ptrn-prop-obj-value-undef.js
@@ -0,0 +1,55 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-undef.case
+// - src/dstr-binding/error/for-await-of-async-gen-let.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function * gen() {
+ for await (let { w: { x, y, z } = undefined } of [{ }]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-init-iter-get-err.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-init-iter-get-err.js
new file mode 100644
index 0000000000..a74a3b5d96
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-init-iter-get-err.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-get-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Abrupt completion returned by GetIterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+ throw new Test262Error();
+};
+
+async function * gen() {
+ for await (var [x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-ary-val-null.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-ary-val-null.js
new file mode 100644
index 0000000000..a8ab29bbcc
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-ary-val-null.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-val-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Nested array destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+---*/
+
+async function * gen() {
+ for await (var [[x]] of [[null]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-init-throws.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-init-throws.js
new file mode 100644
index 0000000000..267d3362e0
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-init-throws.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Destructuring initializer returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+
+async function * gen() {
+ for await (var [x = (function() { throw new Test262Error(); })()] of [[undefined]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-init-unresolvable.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-init-unresolvable.js
new file mode 100644
index 0000000000..ac20681ef8
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function * gen() {
+ for await (var [ x = unresolvableReference ] of [[]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-iter-step-err.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-iter-step-err.js
new file mode 100644
index 0000000000..1a0c0ce0c2
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-iter-step-err.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+---*/
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ throw new Test262Error();
+ }
+ };
+};
+
+async function * gen() {
+ for await (var [x] of [g]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-iter-val-err.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-iter-val-err.js
new file mode 100644
index 0000000000..9d764066f4
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-id-iter-val-err.js
@@ -0,0 +1,77 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(v).
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function * gen() {
+ for await (var [x] of [g]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-obj-val-null.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-obj-val-null.js
new file mode 100644
index 0000000000..7ca17a4126
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-obj-val-null.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Nested object destructuring with a null value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function * gen() {
+ for await (var [{ x }] of [[null]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-obj-val-undef.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-obj-val-undef.js
new file mode 100644
index 0000000000..a2ef24f31c
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elem-obj-val-undef.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-undef.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Nested object destructuring with a value of `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+async function * gen() {
+ for await (var [{ x }] of [[]]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elision-step-err.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elision-step-err.js
new file mode 100644
index 0000000000..27b0231dbe
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-elision-step-err.js
@@ -0,0 +1,74 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision-step-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Elision advances iterator and forwards abrupt completions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+
+---*/
+var following = 0;
+var iter =function* () {
+ throw new Test262Error();
+ following += 1;
+}();
+
+async function * gen() {
+ for await (var [,] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+iter.next();
+assert.sameValue(following, 0, 'Iterator was properly closed.');
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-elision-next-err.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-elision-next-err.js
new file mode 100644
index 0000000000..cde00838d2
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-elision-next-err.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-elision-next-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Rest element following elision elements (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+ 1. If Elision is present, then
+ a. Let status be the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with
+ iteratorRecord as the argument.
+ b. ReturnIfAbrupt(status).
+ 2. Return the result of performing IteratorBindingInitialization for
+ BindingRestElement with iteratorRecord and environment as arguments.
+
+---*/
+var iter = (function*() { throw new Test262Error(); })();
+
+async function * gen() {
+ for await (var [, ...x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-iter-step-err.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-iter-step-err.js
new file mode 100644
index 0000000000..63e8ed66d7
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-iter-step-err.js
@@ -0,0 +1,71 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-step-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ a. If iteratorRecord.[[done]] is false,
+ i. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ ii. If next is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(next).
+
+---*/
+var first = 0;
+var second = 0;
+var iter = function*() {
+ first += 1;
+ throw new Test262Error();
+ second += 1;
+}();
+
+async function * gen() {
+ for await (var [...x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+iter.next();
+assert.sameValue(first, 1);
+assert.sameValue(second, 0, 'Iterator is closed following abrupt completion.');
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-iter-val-err.js b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-iter-val-err.js
new file mode 100644
index 0000000000..a68cc73128
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-ary-ptrn-rest-id-iter-val-err.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-val-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ c. Let nextValue be IteratorValue(next).
+ d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ e. ReturnIfAbrupt(nextValue).
+
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+async function * gen() {
+ for await (var [...x] of [iter]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-init-null.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-init-null.js
new file mode 100644
index 0000000000..db7e73ba92
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-init-null.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (null) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function * gen() {
+ for await (var {} of [null]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-init-undefined.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-init-undefined.js
new file mode 100644
index 0000000000..21b565b2bb
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-init-undefined.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-undefined.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (undefined) (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+async function * gen() {
+ for await (var {} of [undefined]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-get-value-err.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-get-value-err.js
new file mode 100644
index 0000000000..20a4466681
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-get-value-err.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. Let v be GetV(value, propertyName).
+ 5. ReturnIfAbrupt(v).
+---*/
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function * gen() {
+ for await (var { poisoned } of [poisonedProperty]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-init-throws.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-init-throws.js
new file mode 100644
index 0000000000..b24aac79e7
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-init-throws.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (var { x = thrower() } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-init-unresolvable.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-init-unresolvable.js
new file mode 100644
index 0000000000..36c561c4d1
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function * gen() {
+ for await (var { x = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-list-err.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-list-err.js
new file mode 100644
index 0000000000..ce5ff77d47
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-list-err.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-list-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Binding property list evaluation is interrupted by an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPropertyList : BindingPropertyList , BindingProperty
+
+ 1. Let status be the result of performing BindingInitialization for
+ BindingPropertyList using value and environment as arguments.
+ 2. ReturnIfAbrupt(status).
+---*/
+var initCount = 0;
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (var { a, b = thrower(), c = ++initCount } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+assert.sameValue(initCount, 0);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-ary-value-null.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-ary-value-null.js
new file mode 100644
index 0000000000..be9556f0f8
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-ary-value-null.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-value-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Object binding pattern with "nested" array binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function * gen() {
+ for await (var { w: [x, y, z] = [4, 5, 6] } of [{ w: null }]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-eval-err.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-eval-err.js
new file mode 100644
index 0000000000..0f682cbaf5
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-eval-err.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-eval-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Evaluation of property name returns an abrupt completion (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingProperty : PropertyName : BindingElement
+
+ 1. Let P be the result of evaluating PropertyName
+ 2. ReturnIfAbrupt(P).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (var { [thrower()]: x } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-get-value-err.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-get-value-err.js
new file mode 100644
index 0000000000..496b7fb325
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-get-value-err.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-get-value-err.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. Let v be GetV(value, propertyName).
+ 2. ReturnIfAbrupt(v).
+---*/
+var initEvalCount = 0;
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+async function * gen() {
+ for await (var { poisoned: x = ++initEvalCount } of [poisonedProperty]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
+
+assert.sameValue(initEvalCount, 0);
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-init-throws.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-init-throws.js
new file mode 100644
index 0000000000..a03dcad4f3
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-init-throws.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-throws.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Error thrown when evaluating the initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+async function * gen() {
+ for await (var { x: y = thrower() } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, Test262Error))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-init-unresolvable.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-init-unresolvable.js
new file mode 100644
index 0000000000..2da010c159
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-id-init-unresolvable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-unresolvable.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Destructuring initializer is an unresolvable reference (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+async function * gen() {
+ for await (var { x: y = unresolvableReference } of [{}]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, ReferenceError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-obj-value-null.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-obj-value-null.js
new file mode 100644
index 0000000000..17ad2d3f61
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-obj-value-null.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-null.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function * gen() {
+ for await (var { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: null }]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-obj-value-undef.js b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-obj-value-undef.js
new file mode 100644
index 0000000000..20a1a2213e
--- /dev/null
+++ b/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn-prop-obj-value-undef.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-undef.case
+// - src/dstr-binding/error/for-await-of-async-gen-var.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 4. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 6. Repeat
+ [...]
+ j. If destructuring is false, then
+ [...]
+ k. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+async function * gen() {
+ for await (var { w: { x, y, z } = undefined } of [{ }]) {
+ return;
+ }
+}
+
+gen().next()
+ .then(_ => throw new Test262Error("Expected async function to reject, but resolved."), ({ constructor }) => assert.sameValue(constructor, TypeError))
+ .then($DONE, $DONE);
+
--
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