146339 2015-06-26 02:02:26 -0700 Array destructuring seems to not follow the ES6 spec 2015-06-26 02:17:24 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED P2 Normal --- 38410 1 bzbarsky ysuzuki arv ysuzuki oldest_to_newest 1104886 0 bzbarsky 2015-06-26 02:02:26 -0700 Consider this testcase: var y = "FAIL"; Object.defineProperty(Array.prototype, 0, { get: function() { y = "PASS"; } }); var [,x] = [,1]; alert(y); per spec, this should alert "PASS". In Safari (and in a WebKit nightly), this alerts "FAIL". 1104890 1 ysuzuki 2015-06-26 02:10:02 -0700 I guess this is fixed by this commit[1]. I've tried it with r185990's JSC shell and get "PASS". var y = "FAIL"; Object.defineProperty(Array.prototype, 0, { get: function() { y = "PASS"; } }); var [,x] = [,1]; print(y); Could you tell me the revision number? [1]: http://trac.webkit.org/changeset/185853 1104891 2 ysuzuki 2015-06-26 02:12:24 -0700 Ah, this commit[1]. [1]: http://trac.webkit.org/changeset/185791 1104892 3 bzbarsky 2015-06-26 02:16:03 -0700 Looks like I was on r185625. I can confirm that http://trac.webkit.org/changeset/185791 looks like it should fix this, and that it's fixed in r185958. Sorry for the spurious bug report. :( 1104893 4 ysuzuki 2015-06-26 02:17:24 -0700 (In reply to comment #3) > Looks like I was on r185625. > > I can confirm that http://trac.webkit.org/changeset/185791 looks like it > should fix this, and that it's fixed in r185958. Sorry for the spurious bug > report. :( No problem!! I'm looking forward to seeing your reports about the other ES6 edge case areas!!!