https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107949
Segher Boessenkool <segher at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |segher at gcc dot gnu.org --- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> --- How would GCC know no extension is needed? The asm template is not parsed at all, by design. Making h1 an unsigned char might solve it here?