From dbf1362cbc1274273b7bd21aa591bb5361e1b40e Mon Sep 17 00:00:00 2001
From: Robin Templeton <robin@igalia.com>
Date: Mon, 28 May 2018 19:58:02 -0400
Subject: [PATCH] Check that JSON.stringify works with BigInt objects from
other realms
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This is based on André Bargull's test case in
<https://bugzilla.mozilla.org/show_bug.cgi?id=1464757>.
---
.../JSON/stringify/bigint-cross-realm.js | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
create mode 100644 test/built-ins/JSON/stringify/bigint-cross-realm.js
diff --git a/test/built-ins/JSON/stringify/bigint-cross-realm.js b/test/built-ins/JSON/stringify/bigint-cross-realm.js
new file mode 100644
index 0000000000..d2307ddcff
--- /dev/null
+++ b/test/built-ins/JSON/stringify/bigint-cross-realm.js
@@ -0,0 +1,19 @@
+// Copyright 2018 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-serializejsonproperty
+description: JSON.stringify called with a BigInt object from another realm
+features: [BigInt, cross-realm]
+---*/
+
+var other = $262.createRealm().global;
+var wrapped = other.Object(other.BigInt(100));
+
+assert.throws(TypeError, () => JSON.stringify(wrapped),
+ "cross-realm BigInt object without toJSON method");
+
+other.BigInt.prototype.toJSON = function () { return this.toString(); };
+
+assert.sameValue(JSON.stringify(wrapped), "\"100\"",
+ "cross-realm BigInt object with toJSON method");
--
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