https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52321
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #8) > Clang outputs an extra line saying the type is incomplete (which should > probably be a "note:" but nevermind): Ha, it is a note, but on my terminal the "note:" part is shown as black text on a black background. It only showed up when I pasted it in here!