GCC segfaulting while trying to compile latest Qt4 code

[John Baldwin]

On Thursday 05 March 2009 11:48:11 am Mark Atkinson wrote:
> Ashish SHUKLA wrote:
> 
> > Daniel O'Connor writes:
> >> On Thursday 05 March 2009 02:44:14 Ashish SHUKLA wrote:
> >>> Hi everone,
> >>> 
> >>> While trying to update my 'qt4-gui' port, gcc segfaults during
> >>> compilation. I'm running FreeBSD 7.1-STABLE (amd64 architecture) updated
> >>> on 3rd March, 2009.
> > 
> >> I would not rule out a hardware problem - seg faults while compiling
> >> heavy code (ie big C++ projects :) can be indicative of
> >> memory/CPU/PSU/motherboard problems.
> > 
> > Okay, but I even tried compiling that file manually and that also
> > resulted in segfault.
> > 
> >> I'd suggest running memtest86 and prime95 for a few hours if you can.
> > 
> > I'll try running memtest86.
> > 
> > Thanks
> 
> I believe superpages were mfc'd to -stable as well.   I have one machine 
> that faults in gcc with this turned on.   You can try adding 
> 
> vm.pmap.pg_ps_enabled="0"
> 
> to /boot/loader.conf, rebooting and see if that fixes the problem.  If so,  
> you might provide the list with your hardware configuration.

Note that superpages is not on by default in 7 the way it is in 8.  BTW, can 
you get more details from your actual crash dump?  I'm not sure if there's a 
way you can either add some debug printfs or something else to determine what 
the faulting address that results in the SIGBUS you are seeing?

-- 
John Baldwin