gcc/testsuite/gcc.c-torture/execute/20120808-1.c

   1 extern void exit (int);
   2 extern void abort (void);
   3
   4 volatile int i;
   5 unsigned char *volatile cp;
   6 unsigned char d[32] = { 0 };
   7
   8 int
   9 main (void)
  10 {
  11   unsigned char c[32] = { 0 };
  12   unsigned char *p = d + i;
  13   int j;
  14   for (j = 0; j < 30; j++)
  15     {
  16       int x = 0xff;
  17       int y = *++p;
  18       switch (j)
  19         {
  20         case 1: x ^= 2; break;
  21         case 2: x ^= 4; break;
  22         case 25: x ^= 1; break;
  23         default: break;
  24         }
  25       c[j] = y | x;
  26       cp = p;
  27     }
  28   if (c[0] != 0xff
  29       || c[1] != 0xfd
  30       || c[2] != 0xfb
  31       || c[3] != 0xff
  32       || c[4] != 0xff
  33       || c[25] != 0xfe
  34       || cp != d + 30)
  35     abort ();
  36   exit (0);
  37 }