Created attachment 681950 [details] test.html User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0 Build ID: 20121024073032 Steps to reproduce: Execute the script Actual results: hhh.align should have the value 'left'. Expected results: Property has undefined value.
http://software.hixie.ch/utilities/js/live-dom-viewer/saved/1914 Uncommenting the this.__proto__ line fixes the issue.
Ms2ger, is this a regression? Regression range?
m-c good=2012-06-05 bad=2012-06-06 http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=a7a905fd70d5&tochange=6338a8988917 m-i good=2012-06-04 bad=2012-06-05 http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=778ba119ded6&tochange=f56e2197d9cd
Possibly a regression from bug 759978?
Hmm. My 2012-10-28 nightly shows correct behavior. So does the 2012-11-14 nightly. I do see the problem in Firefox 16. Is this fixed on trunk?
Yes, it's fixed in the latest Nightly too (Win 7). So it's likely a dupe. I should have to test the latest nightly... :/
The test is also misleading in that it hard codes the 'undefined': alert("Expected 'left'; get 'undefined' in FF 16; result="+hhh.align); Anyways, this was fixed by bug 767961 (this particular case was reported in bug 783396). Is it a matter of backporting the patch?
Nope. That bug is fixed in 17, so unless we plan to backport to a 16 chemspill we're all set. Thanks!