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45 lines
1.1 KiB
JavaScript
45 lines
1.1 KiB
JavaScript
// Copyright (C) 2017 André Bargull. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-function-calls-runtime-semantics-evaluation
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description: >
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Tail-call with identifier named "eval" in function environment.
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info: |
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12.3.4.1 Runtime Semantics: Evaluation
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...
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6. If Type(ref) is Reference and IsPropertyReference(ref) is false and
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GetReferencedName(ref) is "eval", then
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a. If SameValue(func, %eval%) is true, then
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...
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...
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9. Return ? EvaluateCall(func, ref, arguments, tailCall).
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12.3.4.2 Runtime Semantics: EvaluateCall( func, ref, arguments, tailPosition )
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...
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7. If tailPosition is true, perform PrepareForTailCall().
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8. Let result be Call(func, thisValue, argList).
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...
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flags: [noStrict]
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features: [tail-call-optimization]
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includes: [tcoHelper.js]
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---*/
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var callCount = 0;
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(function() {
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function f(n) {
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"use strict";
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if (n === 0) {
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callCount += 1
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return;
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}
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return eval(n - 1);
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}
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var eval = f;
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f($MAX_ITERATIONS);
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})();
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assert.sameValue(callCount, 1);
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