[Bug middle-end/49308] [4.7 Regression] segfault in rest_of_handle_ud_dce () at gcc/gcc/dce.c:518

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49308

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-07 
07:35:40 UTC ---
Your gdb is very old.
Then
rm dce.o; make CFLAGS="-g -O0" cc1 cc1plus f951
and retry.