gcc/testsuite/gcc.dg/guality/asm-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-g" } */
   3
   4 #include "../nop.h"
   5
   6 struct A { int x; unsigned short y; char z[64]; };
   7
   8 void __attribute__((noinline))
   9 foo (struct A *p, char *q)
  10 {
  11   int f = &p->z[p->y] - q;
  12   asm volatile (NOP);
  13   asm volatile (NOP : : "g" (f));               /* { dg-final { gdb-test 14 "f" "14" } } */
  14   asm volatile ("" : : "g" (p), "g" (q));
  15 }
  16
  17 int
  18 main ()
  19 {
  20   struct A a;
  21   __builtin_memset (&a, 0, sizeof a);
  22   a.y = 26;
  23   a.x = 12;
  24   asm volatile ("" : : "r" (&a) : "memory");
  25   foo (&a, &a.z[a.x]);
  26   return 0;
  27 }