https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113450
--- Comment #12 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> --- > --- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> --- > It's technically an ABI break, since void f(int8_t) would mangle differently. > It probably wouldn't affect much in practice, but would still be a break. Still, given how serious Sun/Oracle is about ABI compatibility (and always has been), I'm doubtful they would be amenable to the idea.