https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112941
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Simplified: unsigned _BitInt(2049) foo (unsigned _BitInt(6384) x, _BitInt(8) y) { return x * y; } _BitInt(2049) bar (unsigned _BitInt(6384) x, _BitInt(1023) y) { return x * y; }