[vorbis-dev] compile optimization error in libvorbis-1.0

[Jeffrey Bridge]

Wow, I've never seen an FSF gcc crap out like this on a non-overheating
system. When lib/envelope.c is compiled with -march=i686, gcc gets a
signal 11, but not with -march=i586. I'm not sure whether to blame gcc
or libvorbis. There are apparently three other files in libvorbis where
this same behavior is seen.

jeffrey at diddl:/usr/src/build/libvorbis-1.0/lib$ gcc
-DPACKAGE=\"libvorbis\" -DVERSION=\"1.0\" -DHAVE_DLFCN_H=1
-DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1 -DHAVE_SQRTF=1 -DHAVE_LOGF=1
-DHAVE_EXPF=1 -DHAVE_ACOSF=1 -DHAVE_ATANF=1 -DHAVE_FREXPF=1
-DHAVE_RINTF=1 -DHAVE_FLOORF=1 -I. -I. -I../include -I/usr/include
-ffast-math -mno-ieee-fp -D_REENTRANT -fsigned-char -g -O2 -march=i686
-DUSE_MEMORY_H -c envelope.c  -fPIC -DPIC -o .libs/envelope.lo
gcc: Internal compiler error: program cc1 got fatal signal 11

Replacing i686 with i586 makes it work. This is with glibc 2.2.5, gcc
2.95.3 release.

~jeffrey :j

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