I search for demux_lavf.c and libmpdemux and mplayer and didn't found anything so I hope this wasn't already repported.
Trying to compil mplayer svn with gcc -v Using built-in specs. Target: x86_64-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-4.3.0_alpha20071116/work/gcc-4.3-20071116/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.3.0-alpha20071116 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.3.0-alpha20071116/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.3.0-alpha20071116 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.3.0-alpha20071116/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.3.0-alpha20071116/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.3.0-alpha20071116/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --enable-nls --without-included-gettext --with-system-zlib --disable-checking --disable-werror --enable-secureplt --disable-libunwind-exceptions --enable-multilib --enable-libmudflap --disable-libssp --disable-libgcj --enable-languages=c,c++,fortran --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu Thread model: posix gcc version 4.3.0-alpha20071116 (experimental) (GCC) It ends with : x86_64-pc-linux-gnu-gcc -I../libavcodec -I../libavformat -Wdisabled-optimization -Wno-pointer-sign -Wdeclaration-after-statement -I. -I.. -I../libavutil -Wall -Wno-switch -Wpointer-arith -Wredundant-decls -O4 -D__STDC_LIMIT_MACROS -march=native -mtune=native -pipe -ffast-math -fomit-frame-pointer -D_REENTRANT -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -DHAVE_CONFIG_H -I/usr/include/ -I/usr/include/SDL -D_REENTRANT -D_REENTRANT -I/usr/include/freetype2 -I/usr/include -I/usr/include/gtk-2.0 -I/usr/lib64/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng12 -c -o demux_gif.o demux_gif.c demux_gif.c: In function âdemux_gif_fill_bufferâ: demux_gif.c:76: warning: âtransparent_colâ may be used uninitialized in this function x86_64-pc-linux-gnu-gcc -I../libavcodec -I../libavformat -Wdisabled-optimization -Wno-pointer-sign -Wdeclaration-after-statement -I. -I.. -I../libavutil -Wall -Wno-switch -Wpointer-arith -Wredundant-decls -O4 -D__STDC_LIMIT_MACROS -march=native -mtune=native -pipe -ffast-math -fomit-frame-pointer -D_REENTRANT -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -DHAVE_CONFIG_H -I/usr/include/ -I/usr/include/SDL -D_REENTRANT -D_REENTRANT -I/usr/include/freetype2 -I/usr/include -I/usr/include/gtk-2.0 -I/usr/lib64/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng12 -c -o demux_lavf.o demux_lavf.c demux_lavf.c: In function âlavf_check_preferred_fileâ: demux_lavf.c:247: warning: initialization from incompatible pointer type demux_lavf.c:245: internal compiler error: in get_addr_dereference_operands, at tree-ssa-operands.c:1688 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. make[1]: *** [demux_lavf.o] Error 1 make[1]: Leaving directory `/var/tmp/portage/media-video/mplayer-9999-r18/work/mplayer/libmpdemux' make: *** [libmpdemux/libmpdemux.a] Error 2 -- Summary: ICE with demux_lavf.c (mplayer svn) Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: gregoire dot favre at gmail dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34131