gcc/testsuite/gcc.c-torture/execute/941014-2.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 typedef struct {
   5   unsigned short a;
   6   unsigned short b;
   7 } foo_t;
   8
   9 void a1 (unsigned long offset) {}
  10
  11 volatile foo_t *
  12 f ()
  13 {
  14   volatile foo_t *foo_p = (volatile foo_t *)malloc (sizeof (foo_t));
  15
  16   a1((unsigned long)foo_p-30);
  17   if (foo_p->a & 0xf000)
  18     printf("%d\n", foo_p->a);
  19   foo_p->b = 0x0100;
  20   a1 ((unsigned long)foo_p + 2);
  21   a1 ((unsigned long)foo_p - 30);
  22   return foo_p;
  23 }
  24
  25 main ()
  26 {
  27   volatile foo_t *foo_p;
  28
  29   foo_p = f ();
  30   if (foo_p->b != 0x0100)
  31     abort ();
  32   exit (0);
  33 }