mirror of https://github.com/tc39/test262.git
44 lines
1.3 KiB
JavaScript
44 lines
1.3 KiB
JavaScript
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// Copyright (C) 2016 the V8 project authors. 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-for-statement-runtime-semantics-labelledevaluation
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description: >
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Creation of new lexical environment for each evaluation of the statement
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body
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info: |
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[...]
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11. Let bodyResult be ForBodyEvaluation(the first Expression, the second
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Expression, Statement, perIterationLets, labelSet).
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[...]
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13.7.4.8 Runtime Semantics: ForBodyEvaluation
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[...]
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3. Repeat
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[...]
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b. Let result be the result of evaluating stmt.
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[...]
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e. Perform ? CreatePerIterationEnvironment(perIterationBindings).
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[...]
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13.7.4.9 Runtime Semantics: CreatePerIterationEnvironment
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1. If perIterationBindings has any elements, then
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[...]
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e. Let thisIterationEnv be NewDeclarativeEnvironment(outer).
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f. Let thisIterationEnvRec be thisIterationEnv's EnvironmentRecord.
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features: [let]
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---*/
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var probeFirst;
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var probeSecond = null;
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for (let x = 'first'; probeSecond === null; x = 'second')
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if (!probeFirst)
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probeFirst = function() { return x; };
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else
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probeSecond = function() { return x; };
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assert.sameValue(probeFirst(), 'first');
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assert.sameValue(probeSecond(), 'second');
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