http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20385
--- Comment #9 from Paolo Bonzini <bonzini at gnu dot org> 2010-11-17 16:14:32 UTC --- Another case in which we still do not detect the unsigned type is after declspecs: typedef uintt16_t pid_t; extern uintt16_t x; I think that until this is fixed, there are still enough "bad" cases that it's not worth putting it into the release notes.