global-existing-var-no-init.case

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: Existing variable binding is not modified
template: global
info: |
    B.3.3.2 Changes to GlobalDeclarationInstantiation

    [...]
    b. If declaredFunctionOrVarNames does not contain F, then
       i. Perform ? envRec.CreateGlobalFunctionBinding(F, undefined, false).
       ii. Append F to declaredFunctionOrVarNames.
    [...]
---*/

//- setup
var f = 123;
assert.sameValue(f, 123);