http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55534
--- Comment #5 from Harald Anlauf <anlauf at gmx dot de> 2012-12-07 21:09:50 UTC --- (In reply to comment #4) > * With the patch and the warning activated, the compiler crashes in > gcc/incpath.c's remove_duplicates for cur->name == "/no/such/dir". Yes, I get: f951: internal compiler error: Aborted 0x85ec4b0 crash_signal ../../trunk/gcc/toplev.c:334 0x8b0e334 cpp_diagnostic ../../trunk/libcpp/errors.c:63 62 if (!pfile->cb.error) 63 abort (); 64 ret = pfile->cb.error (pfile, level, reason, src_loc, 0, _(msgid), ap); The callback(?) cb.error is probably not set.