gcc/testsuite/gcc.dg/tree-ssa/alias-28.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3" } */
   3
   4 extern void abort (void);
   5 extern void __link_error (void);
   6 extern void *malloc(__SIZE_TYPE__);
   7
   8 int * __attribute__((noinline,noclone))
   9 foo (int *p)
  10 {
  11   int *q = (int *) malloc (sizeof (int));
  12   *p = 1;
  13   *q = 2;
  14   if (*p != 1)
  15     __link_error ();
  16   *p = 3;
  17   return q;
  18 }
  19
  20 int main()
  21 {
  22   int i;
  23   int *p = foo (&i);
  24   if (i != 3 || *p != 2)
  25     abort ();
  26   return 0;
  27 }