https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114689
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- And does extern void g( int); void f( int mant, int sticky) { mant = mant >> 1 ; mant = mant >> 1 | (mant & 1); mant = mant >> 1 | (mant & 1) | (!!sticky); mant = !!sticky; mant = (mant & 1) | (!!sticky); g( mant); } shut up those warnings?