155454 2016-03-14 13:21:42 -0700 Destructuring parameters are evaluated in the wrong scope 2016-03-15 01:58:52 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 saam saam benjamin caitp commit-queue fpizlo ggaren gskachkov keith_miller mark.lam mcatanzaro msaboff oliver sukolsak ysuzuki oldest_to_newest 1174648 0 saam 2016-03-14 13:21:42 -0700 i.e: return (function({a=function(){ return typeof b === 'undefined'; }}){ var b = 1; return a(); }({})); 1174695 1 saam 2016-03-14 14:07:33 -0700 our computation of "isSimpleParameterList" is wrong. 1174755 2 274041 saam 2016-03-14 15:39:15 -0700 Created attachment 274041 patch 1174758 3 commit-queue 2016-03-14 15:41:25 -0700 Attachment 274041 did not pass style-queue: ERROR: Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h:838: Extra space before ( in function call [whitespace/parens] [4] Total errors found: 1 in 5 files If any of these errors are false positives, please file a bug against check-webkit-style. 1174772 4 caitp 2016-03-14 16:04:51 -0700 I would suggest adding tests involving arrow functions and default parameters --- there were some similar bugs in V8's implementation in these contexts due to incorrect scoping issues. I'm not sure it affects JSC as well because of the different frontend approach, but it probably doesn't hurt to pass similar tests. https://github.com/v8/v8/blob/02e4d21f4ce799c7d4e3500fa2cf96fc447456ff/test/mjsunit/harmony/regress/regress-4395.js 1174774 5 saam 2016-03-14 16:07:39 -0700 (In reply to comment #4) > I would suggest adding tests involving arrow functions and default > parameters --- there were some similar bugs in V8's implementation in these > contexts due to incorrect scoping issues. > > I'm not sure it affects JSC as well because of the different frontend > approach, but it probably doesn't hurt to pass similar tests. > https://github.com/v8/v8/blob/02e4d21f4ce799c7d4e3500fa2cf96fc447456ff/test/ > mjsunit/harmony/regress/regress-4395.js Will do. Thanks. 1174797 6 274049 saam 2016-03-14 16:42:47 -0700 Created attachment 274049 patch added the v8 tests. 1174798 7 commit-queue 2016-03-14 16:44:05 -0700 Attachment 274049 did not pass style-queue: ERROR: Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h:838: Extra space before ( in function call [whitespace/parens] [4] Total errors found: 1 in 5 files If any of these errors are false positives, please file a bug against check-webkit-style. 1174799 8 274050 saam 2016-03-14 16:44:16 -0700 Created attachment 274050 patch 1174800 9 274050 saam 2016-03-14 16:44:42 -0700 Comment on attachment 274050 patch View in context: https://bugs.webkit.org/attachment.cgi?id=274050&action=review > Source/JavaScriptCore/tests/stress/v8-parameter-scoping.js:26 > +// Copyright 2014, the V8 project authors. All rights reserved. > +// Redistribution and use in source and binary forms, with or without > +// modification, are permitted provided that the following conditions are > +// met: > +// > +// * Redistributions of source code must retain the above copyright > +// notice, this list of conditions and the following disclaimer. > +// * Redistributions in binary form must reproduce the above > +// copyright notice, this list of conditions and the following > +// disclaimer in the documentation and/or other materials provided > +// with the distribution. > +// * Neither the name of Google Inc. nor the names of its > +// contributors may be used to endorse or promote products derived > +// from this software without specific prior written permission. > +// > +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS > +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT > +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR > +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT > +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, > +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT > +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, > +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY > +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT > +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE > +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Is this ok? 1174802 10 commit-queue 2016-03-14 16:46:40 -0700 Attachment 274050 did not pass style-queue: ERROR: Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h:838: Extra space before ( in function call [whitespace/parens] [4] Total errors found: 1 in 6 files If any of these errors are false positives, please file a bug against check-webkit-style. 1174834 11 caitp 2016-03-14 17:31:49 -0700 I'm not a lawyer, but it matches the license text, so lgtm 1174838 12 fpizlo 2016-03-14 17:35:59 -0700 (In reply to comment #9) > Comment on attachment 274050 [details] > patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=274050&action=review > > > Source/JavaScriptCore/tests/stress/v8-parameter-scoping.js:26 > > +// Copyright 2014, the V8 project authors. All rights reserved. > > +// Redistribution and use in source and binary forms, with or without > > +// modification, are permitted provided that the following conditions are > > +// met: > > +// > > +// * Redistributions of source code must retain the above copyright > > +// notice, this list of conditions and the following disclaimer. > > +// * Redistributions in binary form must reproduce the above > > +// copyright notice, this list of conditions and the following > > +// disclaimer in the documentation and/or other materials provided > > +// with the distribution. > > +// * Neither the name of Google Inc. nor the names of its > > +// contributors may be used to endorse or promote products derived > > +// from this software without specific prior written permission. > > +// > > +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS > > +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT > > +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR > > +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT > > +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, > > +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT > > +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, > > +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY > > +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT > > +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE > > +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. > > Is this ok? Looks like BSD 3-clause to me, so I think that it's fine. 1174880 13 274050 ggaren 2016-03-14 20:26:26 -0700 Comment on attachment 274050 patch r=me 1174936 14 274050 commit-queue 2016-03-15 01:58:47 -0700 Comment on attachment 274050 patch Clearing flags on attachment: 274050 Committed r198206: <http://trac.webkit.org/changeset/198206> 1174937 15 commit-queue 2016-03-15 01:58:52 -0700 All reviewed patches have been landed. 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