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Let paramVarEnv be NewDeclarativeEnvironment(originalEnv). (#1348) 

Originally discovered by Cait Potter (@caitp), reported in irc.mozilla.org#jslang
This commit is contained in:
Rick Waldron 2017-11-20 15:05:20 -05:00 committed by Leo Balter
parent 076ecc38c6
commit 3981242226
2 changed files with 54 additions and 0 deletions
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28
test/language/function-code/each-param-has-own-non-shared-eval-scope.js Normal file
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// Copyright (C) 2017 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-function-definitions-runtime-semantics-iteratorbindinginitialization
description: >
A new declarative environment is created, from the originalEnv, for each
parameter, and paramVarEnv is not shared.
info: |
Runtime Semantics: IteratorBindingInitialization
FormalParameter : BindingElement
...
6. Let paramVarEnv be NewDeclarativeEnvironment(originalEnv).
...
features: [arrow-function, default-parameters]
---*/
var y;
function f(a = eval("var x = 1; y = 42; x"), b = eval("x")) {}
assert.throws(ReferenceError, () => {
f();
});
assert.sameValue(y, 42);

26
test/language/function-code/each-param-has-own-scope.js Normal file
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// Copyright (C) 2017 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-function-definitions-runtime-semantics-iteratorbindinginitialization
description: A new declarative environment is created, from the originalEnv, for each parameter.
info: |
Runtime Semantics: IteratorBindingInitialization
FormalParameter : BindingElement
...
6. Let paramVarEnv be NewDeclarativeEnvironment(originalEnv).
...
features: [arrow-function, default-parameters]
---*/
var y;
function f(a = eval("var x = 1; y = 42; x"), b = x) {}
assert.throws(ReferenceError, () => {
f();
});
assert.sameValue(y, 42);