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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-evaldeclarationinstantiation
es6id: 18.2.1.2
description: Throws a TypeError if a global variable cannot be defined.
info: |
Runtime Semantics: EvalDeclarationInstantiation( body, varEnv, lexEnv, strict)
...
10. For each d in varDeclarations, do
a. If d is a VariableDeclaration or a ForBinding, then
i. For each String vn in the BoundNames of d, do
1. If vn is not an element of declaredFunctionNames, then
a. If varEnvRec is a global Environment Record, then
i. Let vnDefinable be varEnvRec.CanDeclareGlobalVar(vn).
ii. ReturnIfAbrupt(vnDefinable).
iii. If vnDefinable is false, throw TypeError exception.
...
---*/
var nonExtensible;
try {
Object.preventExtensions(this);
nonExtensible = !Object.isExtensible(this);
} catch (e) {
nonExtensible = false;
}
// Run test if global object is non-extensible.
if (nonExtensible) {
assert.throws(TypeError, function() {
(0,eval)("var unlikelyVariableName;");
});
}
reportCompare(0, 0);