gcc/testsuite/gcc.dg/guality/pr69244.c

   1 /* PR debug/69244 */
   2 /* { dg-do run } */
   3 /* { dg-options "-g" } */
   4
   5 #include "../nop.h"
   6
   7 union U { float f; int i; };
   8 float a, b;
   9
  10 __attribute__((noinline, noclone)) void
  11 foo (void)
  12 {
  13   asm volatile ("" : : "g" (&a), "g" (&b) : "memory");
  14 }
  15
  16 int
  17 main ()
  18 {
  19   float e = a;
  20   foo ();
  21   float d = e;
  22   union U p;
  23   p.f = d += 2;
  24   int c = p.i - 4;
  25   asm (NOP : : : "memory");
  26   b = c;
  27   return 0;
  28 }
  29
  30 /* { dg-final { gdb-test 25 "c" "p.i-4" } } */