mirror of https://github.com/tc39/test262.git
27 lines
705 B
JavaScript
27 lines
705 B
JavaScript
// Copyright (C) 2019 Leo Balter. 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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description: Expression is a candidate for tail-call optimization.
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esid: sec-static-semantics-hascallintailposition
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info: |
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Expression Rules
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CoalesceExpression : CoalesceExpressionHead ?? BitwiseORExpression
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1. Return HasCallInTailPosition of BitwiseORExpression with argument call.
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flags: [onlyStrict]
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features: [tail-call-optimization, coalesce-expression]
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includes: [tcoHelper.js]
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---*/
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var callCount = 0;
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(function f(n) {
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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 undefined ?? f(n - 1);
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}($MAX_ITERATIONS));
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assert.sameValue(callCount, 1);
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