http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49253
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-06-01 17:31:08 UTC --- It seems unfortunate that make check-libstdc++-v3 doesn't catch obvious breakage like this; at the least we could make sure that stdc++.h compiles in debug/parallel modes?
