[Bug c++/44363] New: gcc fails with ICE when compiling ffmpeg

["lists at eitanadler dot com" <gcc-bugzilla at gcc dot gnu dot org>]

% gcc46 -v
Using built-in specs.
COLLECT_GCC=gcc46
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc46/gcc/i386-portbld-freebsd8.1/4.6.0/lto-wrapper
Target: i386-portbld-freebsd8.1
Configured with: ./../gcc-4.6-20100529/configure --disable-nls
--libdir=/usr/local/lib/gcc46 --libexecdir=/usr/local/libexec/gcc46
--program-suffix=46 --with-as=/usr/local/bin/as --with-gmp=/usr/local
--with-gxx-include-dir=/usr/local/lib/gcc46/include/c++/
--with-ld=/usr/local/bin/ld --with-libiconv-prefix=/usr/local
--with-system-zlib --disable-rpath --prefix=/usr/local --mandir=/usr/local/man
--infodir=/usr/local/info/gcc46 --build=i386-portbld-freebsd8.1
Thread model: posix
gcc version 4.6.0 20100529 (experimental) (GCC) 

gcc46 -DHAVE_AV_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
-I. -I"/dta/ports/multimedia/ffmpeg/work/ffmpeg-0.5.2" -pipe -mssse3
-mtune=native -O3 -ffast-math -fno-finite-math-only
-fomit-frame-pointer -Wl,-rpath=/usr/local/lib/gcc46
-fno-strict-aliasing -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112
-I/usr/local/include/vorbis -I/usr/local/include -std=c99
-fomit-frame-pointer -Wdeclaration-after-statement -Wall -Wno-switch
-Wdisabled-optimization -Wpointer-arith -Wredundant-decls
-Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wtype-limits -Wundef
-O3 -fno-math-errno -fno-signed-zeros          -c -o libavutil/crc.o
libavutil/crc.c
libavutil/crc.c: In function 'av_crc_init':
libavutil/crc.c:58:5: internal compiler error: in predicate_bbs, at
tree-if-conv.c:555
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
gmake: *** [libavutil/crc.o] Error 1
gmake: *** Waiting for unfinished jobs....
*** Error code 1

This appears to crash at the same point every time which I think rules out HW
error to me.

The following command compiles successfully:
gcc46 -DHAVE_AV_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -I.
-I"/dta/ports/multimedia/ffmpeg/work/ffmpeg-0.5.2" -pipe -O3
-Wl,-rpath=/usr/local/lib/gcc46 -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112
-I/usr/local/include/vorbis -I/usr/local/include -std=c99
-Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization
-Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings
-Wtype-limits -Wundef -O0 -c -o libavutil/crc.o libavutil/crc.c 

Note -O0 and removal of all -f* flags. I don't know exactly which flags I could
add and have it still compile.


-- 
           Summary: gcc fails with ICE when compiling ffmpeg
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: lists at eitanadler dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44363