20305 2008-08-06 09:23:02 -0700 NPAPI: === returns false for identical NPObjects returned from a plugin. 2016-05-30 11:14:01 -0700 1 1 1 Unclassified WebKit Plug-ins 528+ (Nightly build) Mac OS X 10.5 RESOLVED INVALID InRadar P2 Normal --- 1 playmobil webkit-unassigned andersca ap duncantebbs michaelbraithwaite tulrich zwarich oldest_to_newest 87968 0 playmobil 2008-08-06 09:23:02 -0700 The === JS operator appears to have a bug when comparing identical NPObjects returned from a plugin. a = plugin.getObject(); b = plugin.getObject(); // Returns the same underlying object as the one above. // a === b is false, a == b is true. alert(a); // NPObject 0x865c3d4, NPClass 0x4d7e780 alert(b); // NPObject 0x865c3d4, NPClass 0x4d7e780 alert(typeof(a)); // object 87988 1 mrowe 2008-08-06 14:53:29 -0700 <rdar://problem/6130751> 88021 2 playmobil 2008-08-06 22:05:58 -0700 Correction == returns false as well. 96800 3 tulrich 2008-10-27 15:42:45 -0700 See https://bugs.webkit.org/show_bug.cgi?id=20305 for specific repro steps. 154811 4 tulrich 2009-10-15 09:37:26 -0700 Link to Chromium bug w/ specific repro steps: http://code.google.com/p/chromium/issues/detail?id=3786 420412 5 michaelbraithwaite 2011-06-14 07:55:49 -0700 Another Chrome bug on the same === failing issue has a recent fix for it. See http://code.google.com/p/chromium/issues/detail?id=5751 545760 6 duncantebbs 2012-01-30 20:54:27 -0800 The problem appears to exist in the other direction too, i.e. when passing objects from JS to the plugin. var a = {}; plugin.f(a, a); The plugin sees an argument list containing two different NPObject pointers. On Firefox and Chrome, the same NPObject pointer appears twice in the list, allowing the plugin to test whether the arguments are the same. 545780 7 ap 2012-01-30 21:40:51 -0800 This bug is in a pretty much useless state. Is it about Chrome or Safari, WebKit1 or WebKit2? 545784 8 duncantebbs 2012-01-30 22:05:50 -0800 I've created a new bug for the JS -> plugin direction (which was under Safari) https://bugs.webkit.org/show_bug.cgi?id=77404 1197645 9 andersca 2016-05-30 11:14:01 -0700 I think this works with WebKit2. If it doesn't work, we're not likely to fix it - our plug-in code is in maintenance mode only.