Bug building GIMP, minimal testcase included

[Joe Buck]

> 
> Hi,  
> 
> I'm getting the following error when building the GIMP version 18 with
> egcs-1.00 and egcs-1.01:

[ on i686-linux or i386-linux ]

>   % gcc -DHAVE_CONFIG_H -I. -I../.. -I/usr/X11R6/include -O -funroll-loops \
>       -c gauss_iir.c
>   gcc: Internal compiler error: program cc1 got fatal signal 6
> ... 
> egcs bug?  

Yes; to quote the manual:

"If the compiler gets a fatal signal, for any input whatever, that is a
 compiler bug.  Reliable compilers never crash."