Bug building GIMP, minimal testcase included

[Joe Buck]

The gcc manual says:

> > "If the compiler gets a fatal signal, for any input whatever, that is a
> >  compiler bug.  Reliable compilers never crash."
> 
> Okay, just wanted to make sure it wasn't a hardware problem on my end (bad
> cache and/or RAM can often show up as signal 11s under Linux ...

Yes, the manual passage quoted above was written in the days where
everyone had reliable ECC memory, not the junk sold by today's PC clone
shops.  But this one appears to be a real bug.