gcc/testsuite/gcc.c-torture/compile/20080806-1.c

   1 /* { dg-add-options stack_size } */
   2
   3 /* This used to ICE on s390x due to a reload bug.  */
   4
   5 #if defined(STACK_SIZE) && (STACK_SIZE < 65536)
   6   #define BYTES 64
   7 #else
   8   #define BYTES 65400
   9 #endif
  10
  11 int gl2;
  12 typedef __SIZE_TYPE__ size_t;
  13
  14 extern void *memcpy (void *dest, const void *src, size_t n);
  15
  16 void
  17 f1 ()
  18 {
  19   int i2;
  20   unsigned char bf[BYTES];
  21
  22   for (i2 = 0; i2 < 3; i2++)
  23     {
  24       unsigned char *p2 = bf;
  25       unsigned char *p3 = ((void *) 0);
  26       unsigned short ctf2;
  27
  28       p2 += sizeof (short);
  29
  30       for (ctf2 = 0; ctf2 < 3; ctf2++)
  31         {
  32           if (ctf2 == 1)
  33             {
  34               unsigned short of = p2 - bf - 6;
  35               unsigned short *ofp = (unsigned short *) &of;
  36               memcpy (p3, ofp, sizeof (short));
  37             }
  38
  39           if (gl2 == 1)
  40             p2 += 3;
  41         }
  42     }
  43 }