https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117599
--- Comment #6 from chenglulu <chenglulu at loongson dot cn> --- (In reply to Xi Ruoyao from comment #4) > We have things like > > # VUSE <.MEM_74> > _48 = VIEW_CONVERT_EXPR<unsigned long[10]>(b575[i_6])[8]; > ./gcc/testsuite/gcc.dg/torture/bitint-12.c:39:1: error: type mismatch in > 'array_ref' > <unnamed-signed:63> > > where b575[i_6] is _BitInt(575). On x86 we have unsigned long[9] instead of > unsigned long[10], I guess the difference comes from we must align _BitInt > to 16B boundary? Before this patch, Yang Yujie submitted several patches that modified the public layer code, so maybe you need to update the code?