Bug#768360: iceweasel: crashes with Illegal instruction at startup

[Mike Hommey]

On Sun, Nov 09, 2014 at 08:30:58AM +0900, Mike Hommey wrote:
> Okay, so despite all the changes in the related code, this was not
> fixed. I now need to know if this is a bug in cpu detection or in the
> code deciding what to JIT features to enabled based on the cpu
> detection.
> 
> In gdb, after the crash, with version 31, could you report what the
> following command prints out?
> 
> gdb> print JSC::MacroAssemblerX86Common::s_sseCheckState

BTW, please note that you should be able to work around this problem by
adding the following to the prefs.js file in your ~/.mozilla profile:

    user_pref("javascript.options.ion", false);

If that's not enough, you can also try:

    user_pref("javascript.options.baselinejit", false);

Mike