gcc/testsuite/gcc.c-torture/execute/990531-1.c

   1 void abort (void);
   2 void exit (int);
   3
   4    unsigned long bad(int reg, unsigned long inWord)
   5    {
   6        union {
   7            unsigned long word;
   8            unsigned char byte[4];
   9        } data;
  10
  11        data.word = inWord;
  12        data.byte[reg] = 0;
  13
  14        return data.word;
  15    }
  16
  17 int
  18 main(void)
  19 {
  20   /* XXX This test could be generalized.  */
  21   if (sizeof (long) != 4)
  22     exit (0);
  23
  24   if (bad (0, 0xdeadbeef) == 0xdeadbeef)
  25     abort ();
  26   exit (0);
  27 }