1/* This used to ICE on s390 due to bug in the definition of the 'R'
2   constraint which replaced the 'm' constraint (together with 'T')
3   while adding z10 support.  */
4
5/* { dg-do compile } */
6/* { dg-options "-O" } */
7
8int boo()
9{
10  struct {
11    unsigned char pad[4096];
12    unsigned long bar;
13  } *foo;
14  asm volatile( "" : "=m" (*(unsigned long long*)(foo->bar))
15		: "a" (&foo->bar));
16}
17