[Webkit-unassigned] [Bug 131901] REGRESSION(r167501): DYEBench times out

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sat Apr 19 19:43:50 PDT 2014


https://bugs.webkit.org/show_bug.cgi?id=131901





--- Comment #7 from Mark Hahnenberg <mhahnenberg at apple.com>  2014-04-19 19:44:11 PST ---
(In reply to comment #6)
> (In reply to comment #5)
> > (In reply to comment #4)
> > > When running with DRT on command line I get the following:
> > > 
> > > CONSOLE MESSAGE: line 5780: TypeError: undefined is not an object (evaluating 'this.get('newTitle').trim')
> > > 
> > > Seems like this could cause a timeout. I'll investigate more.
> > 
> > That indeed appears to be the problem.  I can reproduce it on Safari as well.  It's erroring out inside an ember.js test.  If I keep the inspector's console open, it doesn't hit that error so it ought be some JIT bug.
> 
> I can still repro when running with JSC_useJIT=0, so it seems unlikely it's a JIT problem unless it's related to the regular expression JIT (again, very unlikely). Maybe the inspector being open causes enough other random stuff to happen that we avoid hitting this particular bug.
> 
> I'm going to try running in debug mode to see what happens.

Debug build didn't reveal any additional info. I'm going to try adding some logging to Structure transition stuff and see if that tells us anything.

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