Bug Report: Firefox 3.6.2 crashes on JavaScript heavy pages

[Garrett Cooper]

On Sat, Apr 3, 2010 at 6:50 PM, Edward Tjörnhammar <e at cube2.se> wrote:
> Thank you for your replies!
>
> I didn't have any special make.conf but tried using
> fno-strict-aliasing as suggested by Garret and now it works.
>
> Regards
>
> On Sat, Apr 3, 2010 at 4:56 PM, Gary Jennejohn
> <gary.jennejohn at freenet.de> wrote:
>> On Sat, 3 Apr 2010 04:24:05 -0700
>> Garrett Cooper <yanefbsd at gmail.com> wrote:
>>
>>> On Sat, Apr 3, 2010 at 3:30 AM, Edward Tj__rnhammar <e at cube2.se> wrote:
>>> > The browser crashes on JavaScript intensive pages. I've tried to debug
>>> > the behavior but since firebug crashes with firefox this is a no go.
>>> > I've tried disabling optimizations in the firefox makefile but it
>>> > makes no difference.
>>> >
>>> > I don't believe it matters but my hardware is a Dell XPS m1210 laptop
>>> > with intel graphics.
>>> >
>>> > What system:
>>> > pylon# uname -a
>>> > FreeBSD pylon 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Sat Mar 13 18:50:29
>>> > CET 2010 __ __ root at pylon:/usr/obj/usr/src/sys/PYLON __i386
>>> >
>>> > What makefile:
>>> > pylon# grep Makefile,v /usr/ports/www/firefox/Makefile
>>> > # $FreeBSD: ports/www/firefox/Makefile,v 1.221 2010/03/23 08:54:22 beat Exp $
>>> >
>>> > How to reproduce:
>>> > I can reproduce this crash everytime by removing my .mozilla and then visit:
>>> > __http://review.source.android.com/11633
>>> > Most pages are Ok.
>>> >
>>> > Error message:
>>> > Floating point exception (core dumped)
>>> >
>>> > Well.. the processor supports SSE instrincs, perhaps this is a SIMD
>>> > optimization bug somewhere else, I remember I enabled that for some
>>> > other port..
>>> >
>>> > Other notable behaviour:
>>> > If i run firefox3 with truss -f firefox3 does not crash on the page.
>>> > I could probably dive deeper into this.
>>>
>>>     Doesn't crash for me on Firefox 3.5.8:
>>>
>>> # /etc/make.conf:
>>> CFLAGS                += -fno-strict-aliasing -pipe
>>> CXXFLAGS      += -fno-strict-aliasing -pipe
>>> # ...
>>> CPUTYPE               := nocona
>>>
>>>     Do you have a custom make.conf file? If so, what's your processor
>>> and your CPUTYPE / C*FLAGS?
>>>
>>
>> The referenced page works for me using FF 3.6.2.  I don't have any
>> special CFLAGS values set in src.conf/make.conf.
>>
>> I also have
>> CPU: AMD Athlon(tm) Dual Core Processor 4850e (2505.35-MHz K8-class CPU)
>> Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,
>> MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
>> Features2=0x2001<SSE3,CX16>

    It might be a bug then in how they're type-casting in firefox; if
this is reproducible, a bug should definitely be submitted upstream.
Thanks,
-Garrett