Grief with Dejagnu; Testing gcc 2.95.3.test4 on SCO OS5.0.4

[Joe Buck]

>   Yeah, that is the legendary 'erratic signal 11 thing'.  Some people think
> it's caused by hardware problems: bad RAM or trouble with the memory timing
> parameters in your bios.

See

http://www.bitwizard.nl/sig11/

for advice on how to determine whether this symptom is a software or a
hardware problem, and, if it is hardware, what might be causing it.

> It crops up under Linux and Cygwin as well, so
> that would suggest it isn't a simple software problem.  OTOH you can run a
> memory checker continuously for days on end (I've tried) without spotting
> any errors;

Some memory checkers are much better than others.  The one in the PC BIOS
is near-worthless except for detecting that one of your DRAM chips is
completely non-functional.