23235b5fdb
Reason for revert: Crash fixed by https://codereview.chromium.org/1564923007 Original issue's description: > Revert of Ship ES2015 sloppy-mode function hoisting, let, class (patchset #7 id:120001 of https://codereview.chromium.org/1551443002/ ) > > Reason for revert: > Causes frequent crashes in Canary: chromium:537816 > > Original issue's description: > > Ship ES2015 sloppy-mode function hoisting, let, class > > > > This patch doesn't ship all features of ES2015 variable/scoping > > changes, notably omitting the removal of legacy const. I think > > function hoisting, let and class in sloppy mode can stand to > > themselves as a package, and the legacy const change is much > > riskier and more likely to be reverted, so my intention is to > > pursue those as a separate, follow-on patch. > > > > R=adamk@chromium.org > > BUG=v8:4285,v8:3305 > > LOG=Y > > CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel > > > > Committed: https://crrev.com/fcff8588a5a01587643d6c2507c7b882c78a2957 > > Cr-Commit-Position: refs/heads/master@{#33133} > > TBR=adamk@chromium.org > # Not skipping CQ checks because original CL landed more than 1 days ago. > BUG=v8:4285,v8:3305,chromium:537816 > LOG=Y > > Committed: https://crrev.com/adac5956c6216056a211cfaa460a00ac1500d8f8 > Cr-Commit-Position: refs/heads/master@{#33162} TBR=adamk@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=v8:4285,v8:3305,chromium:537816 Review URL: https://codereview.chromium.org/1571793002 Cr-Commit-Position: refs/heads/master@{#33189}
51 lines
2.2 KiB
JavaScript
51 lines
2.2 KiB
JavaScript
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// With ES2015 function hoisting semantics, functions are only "hoisted" out
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// of blocks by writing their values into var-scoped declarations. Therefore,
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// they access the catch binding when it syntactically appears so.
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// This is a potentially breaking change vs the old semantics, which would
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// return 'function' from g() everywhere.
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var x = 'global';
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function f() {
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var x = 'function';
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assertEquals(undefined, g);
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try {
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assertEquals(undefined, g);
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throw 'catch';
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} catch (x) {
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function g() { return x; }
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assertEquals('catch', g());
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}
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assertEquals('catch', g());
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return g;
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}
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assertEquals('catch', f()());
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