>> ----------------------------------------
>> int *
>> x(void)
>> {
>> register int *a asm("unknown_register"); /* { dg-error "invalid register"
>> } */
>> int *v[1] = {a};
>> return v[1];
>> }
>> ----------------------------------------
>
> I think simply scalarizing for the above testcase is ok - the behavior
> is undefined anyway.What about moving the error to the frontend? Paolo
