diff --git a/gcc/go/gofrontend/expressions.cc b/gcc/go/gofrontend/expressions.cc index a073f9dfae9..3d687a613d4 100644 --- a/gcc/go/gofrontend/expressions.cc +++ b/gcc/go/gofrontend/expressions.cc @@ -4434,7 +4434,7 @@ Binary_expression::eval_integer(Operator op, Type* left_type, mpz_t left_val, case OPERATOR_LSHIFT: { unsigned long shift = mpz_get_ui(right_val); - if (mpz_cmp_ui(right_val, shift) != 0) + if (mpz_cmp_ui(right_val, shift) != 0 || shift > 0x100000) { error_at(location, "shift count overflow"); mpz_set_ui(val, 0);