non-Strict mode Failing
Expected no error, got SyntaxError: warning: Direct call to eval(), but lexical scope is not supported.
Features:
- tail-call-optimization
Expected no error, got SyntaxError: warning: Direct call to eval(), but lexical scope is not supported.
// Copyright (C) 2017 André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-function-calls-runtime-semantics-evaluation
description: >
Tail-call with identifier named "eval" in global environment.
info: |
12.3.4.1 Runtime Semantics: Evaluation
...
6. If Type(ref) is Reference and IsPropertyReference(ref) is false and
GetReferencedName(ref) is "eval", then
a. If SameValue(func, %eval%) is true, then
...
...
9. Return ? EvaluateCall(func, ref, arguments, tailCall).
12.3.4.2 Runtime Semantics: EvaluateCall( func, ref, arguments, tailPosition )
...
7. If tailPosition is true, perform PrepareForTailCall().
8. Let result be Call(func, thisValue, argList).
...
flags: [noStrict]
features: [tail-call-optimization]
includes: [tcoHelper.js]
---*/
var callCount = 0;
function f(n) {
"use strict";
if (n === 0) {
callCount += 1
return;
}
return eval(n - 1);
}
eval = f;
f($MAX_ITERATIONS);
assert.sameValue(callCount, 1);