185943 2018-05-24 06:09:41 -0700 [JSC] ArrayPatternNode::emitDirectBinding does not return assignment target value if dst is nullptr 2018-08-08 09:01:35 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build PC Linux RESOLVED FIXED InRadar P2 Normal --- 187085 1 gfablima ysuzuki fpizlo isol2 mark.lam webkit-bug-importer ysuzuki oldest_to_newest 1426909 0 gfablima 2018-05-24 06:09:41 -0700 Hi everyone, it was observed that javascriptcore have unexpected behaviour when I'm trying to return a destructuring list inside a function. OS: Ubuntu 16.04 x64 Version: 606.1.9.4 Steps to reproduce: function test (){ return ( [a,b,] = [1, 2] ); } print( [a,b,] = [1, 2] ) print( test() ) Actual Results: - 1,2 - undefined Expected Results: - 1,2 - 1,2 Notes: V8, Chakra and SpiderMonkey works as expected. 1436868 1 343694 ysuzuki 2018-06-26 23:56:17 -0700 Created attachment 343694 Patch 1436913 2 343706 ysuzuki 2018-06-27 02:58:00 -0700 Created attachment 343706 Patch 1436914 3 343706 mark.lam 2018-06-27 03:04:20 -0700 Comment on attachment 343706 Patch r=me 1436915 4 ysuzuki 2018-06-27 03:05:56 -0700 Committed r233252: <https://trac.webkit.org/changeset/233252> 1436916 5 webkit-bug-importer 2018-06-27 03:06:22 -0700 <rdar://problem/41515297> 1448760 6 isol2 2018-08-08 09:01:35 -0700 cinfuzz 343694 2018-06-26 23:56:17 -0700 2018-06-27 02:57:59 -0700 Patch bug-185943-20180627155616.patch text/plain 3612 ysuzuki U3VidmVyc2lvbiBSZXZpc2lvbjogMjMzMjQ2CmRpZmYgLS1naXQgYS9Tb3VyY2UvSmF2YVNjcmlw 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