Bug 285092 – [4.4/ICE] GCC crashes when compiling ovdicopy.c from app-text/texlive-core-2008-r7 if -fsee is enabled

• Product: Gentoo Linux
• Status: RESOLVED WONTFIX

[Description Piojo 2009-09-15 14:17:40 UTC]

The attached preprocessed source causes a segmentation fault on GCC AMD64, with the following command line:

x86_64-pc-linux-gnu-gcc -O3 -march=native -pipe -mmmx -msse2 -msse3 -msse -mfpmath=sse,387 -maccumulate-outgoing-args -ftree-vectorize -fomit-frame-pointer -fmodulo-sched -fmodulo-sched-allow-regmoves -fvect-cost-model -fsee -ftree-loop-linear -floop-interchange -floop-strip-mine -floop-block -ftree-loop-distribution -ftree-loop-im -fvect-cost-model  -c odvicopy.i

Output is:

odvicopy.c: In function 'findpacket':
odvicopy.c:1443: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugs.gentoo.org/> for instructions.

I'll dig a bit to find out the offending CFLAG(s).

[Comment 1 Piojo 2009-09-15 14:19:03 UTC]

Created attachment 204195 [details]
Preprocessed source triggering the sigsev

[Comment 2 Piojo 2009-09-15 14:19:50 UTC]

My gcc -v:

Using built-in specs.
Target: x86_64-pc-linux-gnu
Configured with: /var/tmp/portage/sys-devel/gcc-4.4.1/work/gcc-4.4.1/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.4.1 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.1/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.1 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.1/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.1/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.1/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --with-ppl --with-cloog --enable-nls --without-included-gettext --with-system-zlib --disable-checking --disable-werror --enable-secureplt --enable-multilib --enable-libmudflap --disable-libssp --enable-libgomp --enable-cld --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.4.1/python --disable-libgcj --enable-languages=c,c++,fortran --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo 4.4.1 p1.0'
Thread model: posix
gcc version 4.4.1 (Gentoo 4.4.1 p1.0)

[Comment 3 Piojo 2009-09-15 14:20:47 UTC]

Created attachment 204196 [details]
Output of emerge --info

[Comment 4 Piojo 2009-09-15 14:25:15 UTC]

The offending flag seems to be -fsee. It compiles perfectly without it.

[Comment 5 Piojo 2009-10-20 18:42:37 UTC]

For the record, it is NOT fixed on GCC 4.4.2.

[Comment 6 Mark Loeser (RETIRED) 2010-03-04 20:59:33 UTC]

I'm going to assume that Graphite is also related to this, and as such is being closed as WONTFIX since no graphite fixes are being backported to 4.4.