I'm hacking with ghc-3.02.src.tar.gz on several platforms, namely i386 and sparc ...

Both platforms run with gcc-2.7.2.3 ( higher versions may be a risk , 2.95 was bad...)

In sparc I have no problems, but in i386 I do obtain the next results (File : fptools/ghc/lib/posix/PosixProcPrim.hc)

"../../../ghc/driver/ghc -i../misc -recomp -cpp -fglasgow-exts -fvia-C -Rghc-timing -O '-#include"cbits/libposix.h"' -c PosixProcPrim.hc -o PosixProcPrim.o -osuf o PosixProcPrim.hc:2244: fixed or forbidden register was spilled. This may be due to a compiler bug or to impossible asm statements or clauses."

You need to give GHC the -monly-3-regs (or possibly -monly-2-regs) option. Cheers, Simon