1  #if (__SIZEOF_INT__ == 2)
       2  #define TESTVALUE 0x1234
       3  #else
       4  #define TESTVALUE 0x12345678
       5  #endif
       6  static void
       7  foo (unsigned int x, void *p)
       8  {
       9    __builtin_memcpy (p, &x, sizeof x);
      10  }
      11  
      12  void
      13  bar (int type, void *number)
      14  {
      15    switch (type)
      16      {
      17      case 1:
      18        foo (TESTVALUE, number);
      19        break;
      20      case 7:
      21        foo (0, number);
      22        break;
      23      case 8:
      24        foo (0, number);
      25        break;
      26      case 9:
      27        foo (0, number);
      28        break;
      29      }
      30  }
      31  
      32  int
      33  main (void)
      34  {
      35    unsigned int x;
      36    bar (1, &x);
      37    if (x != TESTVALUE)
      38      __builtin_abort ();
      39    return 0;
      40  }