[Webkit-unassigned] [Bug 115949] Window Object TypeError: 'undefined' is not an object (evaluating 'this.document')

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=115949





--- Comment #6 from Mark Lam <mark.lam at apple.com>  2013-05-18 12:49:06 PST ---
(In reply to comment #5)
> You can also try calling Interpreter::dumpCallFrame() for each frame in that unwind loop and see if that gives you any extra info.  But basically, you need to do the above steps to figure out what is different between the working and failing port.  That will tell you where to look next.

You can also compare between what happens in throwException() with the DFG enabled and with the DFG disabled.  In case you didn't know, you can trivially disable the DFG by setting Options::useDFGJIT() = false in Options.cpp (search for "useDFGJIT").

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