Signal 10?

[Berry Kercheval]

andymac at bullseye.apana.org.au said:
> The pthreads implementation on 4.x (-lc_r) will also provoke a bus
> error if the primary thread's stack (which is hard coded at 1MB) is
> exhausted.

I've also seen a bus error when one replaces the binary of a running program 
and it eventually pages in a page that doesn't match what's running; things 
that were previously aligned aren't any more, or a jump from the old code goes 
to the middle of an instruction in the new code.  This is one of the reasons 
attempting to open() a running program's executable file for write returns 
ETXTBUSY.