firefox-30.0_1,1 crash youtube HTML5 videos

[Tijl Coosemans]

On Mon, 7 Jul 2014 08:57:42 -0700 Joseph Olatt wrote:
> On Mon, Jul 07, 2014 at 11:43:23AM +0200, Tijl Coosemans wrote:
> > On Mon, 7 Jul 2014 02:04:51 -0700 Joseph Olatt wrote:
> > > Was wondering if anybody else was encountering Firefox crashing when
> > > attempting to play HTML5 youtube videos? 
> > > 
> > > The system is: 
> > > 
> > >   FreeBSD peace 10.0-STABLE FreeBSD 10.0-STABLE #1 r266948: Mon Jun  2
> > >   14:12:35 CDT 2014     root at peace:/usr/obj/usr/src/sys/PEACE  i386
> > > 
> > > and Firefox is being built from source. Compiling with debug symbols and
> > > getting a backtrace on the core provides:
> > > 
> > > 
> > > (gdb) GNU gdb 6.1.1 [FreeBSD]
> > > <snip>
> > > [New Thread 28501080 (LWP 100126/firefox)]
> > > (gdb) bt
> > > #0  0x39144f52 in ff_ac3dsp_init_x86 () from /usr/local/lib/gstreamer-1.0/libgstlibav.so
> > > #1  0x00000000 in ?? ()
> > > (gdb) 
> > 
> > Can you build gstreamer1-libav with debug symbols and regenerate this
> > backtrace?  Also, what cpu is this running on?  Did you set CPUTYPE or
> > CFLAGS in /etc/make.conf?
> 
> Tijl,
> 
> Thanks for responding. 
> 
> Strange things happen... I did the following:
> 
> (1) I re-compiled gstreamer1-libav *with* debug symbols. 
> (2) Started Firefox, went to youtube and played a HTML5 video. It played 
>     fine. Firefox did not crash.
> (3) I re-compiled gstreamer1-libav *without* debug symbols.
> (4) I repeated step #2. Firefox crashed at the same location as before.
> (5) Repeated step #3. No crash. Strange...
> 
> The processor type is:
> 
>   CPU: Intel(R) Core(TM)2 CPU         T5600  @ 1.83GHz (1828.80-MHz 686-class CPU)
>     Origin = "GenuineIntel"  Id = 0x6f6  Family = 0x6  Model = 0xf Stepping = 6
> 
> Full dmesg output is at: 
> 
>   http://www.eskimo.com/~joji/dmesg.txt
> 
> 
> Looks like there is a bug in gstreamer1-libav. Just don't know how to
> find it if it doesn't show up when debug symbols included..
> 
> Suggestions?

Try to build gstreamer1-libav with:

make WITH_DEBUG=yes DEBUG_FLAGS="-O2 -ggdb" install