https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112733
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Actually, maybe better variant of the first fix in the above comment would be: --- gcc/wide-int.cc.jj 2023-11-28 16:56:50.000000000 +0100 +++ gcc/wide-int.cc 2023-11-28 16:58:02.268776755 +0100 @@ -1985,6 +1985,8 @@ wi::divmod_internal (HOST_WIDE_INT *quot if (remainder) { + if (n > dividend_blocks_needed) + n = dividend_blocks_needed; *remainder_len = wi_pack (remainder, b_remainder, n, dividend_prec); /* The remainder is always the same sign as the dividend. */ if (dividend_neg) where the check which is useless for multiplication and quotient is done only in the problematic spot - remainder.