http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50222
--- Comment #1 from klondike <franxisco1988+gcc at gmail dot com> 2011-08-28 22:08:56 UTC --- Just for the record I can reproduce this with vanilla gcc: # LANG="C" gcc -O2 -funswitch-loops -ftree-loop-distribution -I. -I.. -I../.. nutenc.c -include libavutil/internal.h -I ../../ -c -save-temps -v Using built-in specs. COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/4.6.1/gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.6.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.6.1 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.1/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.6.1 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.6.1/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.6.1/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.1/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --without-ppl --without-cloog --enable-lto --enable-nls --without-included-gettext --with-system-zlib --disable-werror --enable-secureplt --enable-multilib --enable-libmudflap --disable-libssp --enable-libgomp --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.6.1/python --enable-checking=release --disable-libgcj --enable-languages=c,c++ --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo 4.6.1-r1' Thread model: posix gcc version 4.6.1 (Gentoo 4.6.1-r1) COLLECT_GCC_OPTIONS='-O2' '-funswitch-loops' '-ftree-loop-distribution' '-I' '.' '-I' '..' '-I' '../..' '-include' 'libavutil/internal.h' '-I' '../../' '-c' '-save-temps' '-v' '-mtune=generic' '-march=x86-64' /usr/libexec/gcc/x86_64-pc-linux-gnu/4.6.1/cc1 -E -quiet -v -I . -I .. -I ../.. -I ../../ -include libavutil/internal.h nutenc.c -mtune=generic -march=x86-64 -funswitch-loops -ftree-loop-distribution -O2 -fpch-preprocess -o nutenc.i ignoring nonexistent directory "/usr/local/include" ignoring nonexistent directory "/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.1/../../../../x86_64-pc-linux-gnu/include" ignoring duplicate directory "../../" #include "..." search starts here: #include <...> search starts here: . .. ../.. /usr/lib/gcc/x86_64-pc-linux-gnu/4.6.1/include /usr/lib/gcc/x86_64-pc-linux-gnu/4.6.1/include-fixed /usr/include End of search list. COLLECT_GCC_OPTIONS='-O2' '-funswitch-loops' '-ftree-loop-distribution' '-I' '.' '-I' '..' '-I' '../..' '-include' 'libavutil/internal.h' '-I' '../../' '-c' '-save-temps' '-v' '-mtune=generic' '-march=x86-64' /usr/libexec/gcc/x86_64-pc-linux-gnu/4.6.1/cc1 -fpreprocessed nutenc.i -quiet -dumpbase nutenc.c -mtune=generic -march=x86-64 -auxbase nutenc -O2 -version -funswitch-loops -ftree-loop-distribution -o nutenc.s GNU C (Gentoo 4.6.1-r1) version 4.6.1 (x86_64-pc-linux-gnu) compiled by GNU C version 4.6.1, GMP version 5.0.2, MPFR version 3.0.1-p4, MPC version 0.8.2 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU C (Gentoo 4.6.1-r1) version 4.6.1 (x86_64-pc-linux-gnu) compiled by GNU C version 4.6.1, GMP version 5.0.2, MPFR version 3.0.1-p4, MPC version 0.8.2 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: ddaf27b7508d5ce8d54dc64b17e05c96 nutenc.c: In function 'write_header': nutenc.c:580:12: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://bugs.gentoo.org/> for instructions. (gdb) bt #0 0x000000000081fb8f in rename_use_op (bb=0x7ffff6794410) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/tree-vect-loop-manip.c:55 #1 rename_variables_in_bb (bb=0x7ffff6794410) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/tree-vect-loop-manip.c:95 #2 0x000000000081fbce in rename_variables_in_loop (loop=0x7ffff6750a18) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/tree-vect-loop-manip.c:111 #3 0x000000000075f27a in copy_loop_before (loop=<value optimized out>, stmts=<value optimized out>) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/tree-loop-distribution.c:137 #4 generate_loops_for_partition (loop=<value optimized out>, stmts=<value optimized out>) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/tree-loop-distribution.c:171 #5 generate_code_for_partition (loop=<value optimized out>, stmts=<value optimized out>) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/tree-loop-distribution.c:395 #6 ldist_gen (loop=<value optimized out>, stmts=<value optimized out>) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/tree-loop-distribution.c:1133 #7 distribute_loop (loop=<value optimized out>, stmts=<value optimized out>) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/tree-loop-distribution.c:1218 #8 distribute_loop (loop=<value optimized out>, stmts=<value optimized out>) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/tree-loop-distribution.c:1160 #9 0x000000000075f64f in tree_loop_distribution () at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/tree-loop-distribution.c:1274 #10 0x000000000069a4a9 in execute_one_pass (pass=0x108c6c0) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/passes.c:1556 #11 0x000000000069a755 in execute_pass_list (pass=0x108c6c0) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/passes.c:1611 #12 0x000000000069a767 in execute_pass_list (pass=0x108d7a0) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/passes.c:1612 #13 0x000000000069a767 in execute_pass_list (pass=0x108ca20) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/passes.c:1612 #14 0x00000000007666c1 in tree_rest_of_compilation (fndecl=0x7ffff6b76b00) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/tree-optimize.c:422 #15 0x00000000008a624f in cgraph_expand_function (node=0x7ffff6b7ac60) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/cgraphunit.c:1576 #16 0x00000000008a7eaa in cgraph_expand_all_functions () at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/cgraphunit.c:1635 #17 cgraph_optimize () at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/cgraphunit.c:1899 #18 0x00000000008a82aa in cgraph_finalize_compilation_unit () at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/cgraphunit.c:1096 #19 0x00000000004b2665 in c_write_global_declarations () at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/c-decl.c:9871 #20 0x000000000072b4b8 in compile_file (argc=25, argv=0x7fffffffcc08) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/toplev.c:591 #21 do_compile (argc=25, argv=0x7fffffffcc08) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/toplev.c:1900 #22 toplev_main (argc=25, argv=0x7fffffffcc08) at /var/tmp/portage/sys-devel/gcc-4.6.1-r1/work/gcc-4.6.1/gcc/toplev.c:1963 #23 0x00007ffff6f74d6d in __libc_start_main () from /lib64/libc.so.6 #24 0x00000000004a2049 in _start ()
