http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56321
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-02-14 13:58:06 UTC --- Better backtrace: X.c: In function ‘foo’: X.c:1:7: internal compiler error: Segmentation fault float foo(int n) ^ 0xa40775 crash_signal /home/marek/src/gcc/gcc/toplev.c:332 0xc058cb gimple_code /home/marek/src/gcc/gcc/gimple.h:1146 0xc06844 gimple_nop_p /home/marek/src/gcc/gcc/gimple.h:4872 0xc09498 verify_use /home/marek/src/gcc/gcc/tree-ssa.c:755 0xc09fa1 verify_ssa(bool) /home/marek/src/gcc/gcc/tree-ssa.c:1011 0x95e667 execute_function_todo /home/marek/src/gcc/gcc/passes.c:1967 0x95d991 do_per_function /home/marek/src/gcc/gcc/passes.c:1701 0x95e781 execute_todo /home/marek/src/gcc/gcc/passes.c:1999