5f9c89af70
Reason for revert: False alarm, bot hiccup Original issue's description: > Revert of [parsing] Fix maybe-assigned for loop variables. (patchset #3 id:40001 of https://codereview.chromium.org/2673403003/ ) > > Reason for revert: > Speculative revert because of https://codereview.chromium.org/2679163002/. > > Original issue's description: > > [parsing] Fix maybe-assigned for loop variables. > > > > Due to hoisting, the value of a 'var'-declared variable may actually change even > > if the code contains only the "initial" assignment, namely when that assignment > > occurs inside a loop. For example: > > > > let i = 10; > > do { var x = i } while (i--): > > > > As a simple and very conservative approximation of this, we explicitly mark > > as maybe-assigned any non-lexical variable whose "declaration" does not > > syntactically occur in the function scope. (In the example above, it > > occurs in a block scope.) > > > > BUG=v8:5636 > > > > Review-Url: https://codereview.chromium.org/2673403003 > > Cr-Commit-Position: refs/heads/master@{#42989} > > Committed:a33fcd663b> > TBR=marja@chromium.org,adamk@chromium.org,neis@chromium.org > # Skipping CQ checks because original CL landed less than 1 days ago. > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > BUG=v8:5636 > > Review-Url: https://codereview.chromium.org/2679263002 > Cr-Commit-Position: refs/heads/master@{#43010} > Committed:f3ae5ccf57TBR=marja@chromium.org,adamk@chromium.org,neis@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=v8:5636 Review-Url: https://codereview.chromium.org/2686663002 Cr-Commit-Position: refs/heads/master@{#43013}
23 lines
534 B
JavaScript
23 lines
534 B
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax --function-context-specialization
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function f(n) {
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var a = [];
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function g() { return x }
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for (var i = 0; i < n; ++i) {
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var x = i;
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a[i] = g;
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%OptimizeFunctionOnNextCall(g);
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g();
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}
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return a;
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}
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var a = f(3);
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assertEquals(3, a.length);
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assertEquals(2, a[0]());
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assertEquals(2, a[1]());
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assertEquals(2, a[2]());
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