http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56510
--- Comment #2 from Sam Rushing <sam-gccbug at rushing dot nightmare.com> 2013-03-03 00:48:51 UTC --- I recompiled with --enable-checking=release, but I couldn't see any difference. I've attached to the process with gdb and it appears to be stuck forever in cselib.c, often in cselib_lookup().
