https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108623
--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> --- The failure was not detected, only things down the road broke up, can we add something for that? Just a strategically placed assert should do fine. Less important if we grow the field all the way to 16 bits, but :-)