1  int test1 (int b, int c)
       2  {
       3    char x;
       4    if (b)
       5      return x / c;
       6    else
       7      return 1;
       8  }
       9  int test2 (int b, int c)
      10  {
      11    int x;
      12    if (b)
      13      return x * c;
      14    else
      15      return 1;
      16  }
      17  int test3 (int b, int c)
      18  {
      19    int x;
      20    if (b)
      21      return x % c;
      22    else
      23      return 1;
      24  }
      25  int test4 (int b, int c)
      26  {
      27    char x;
      28    if (b)
      29      return x == c;
      30    else
      31      return 1;
      32  }
      33  
      34  extern void abort (void);
      35  int main()
      36  {
      37    if (test1(1, 1000) != 0)
      38      abort ();
      39    if (test2(1, 0) != 0)
      40      abort ();
      41    if (test3(1, 1) != 0)
      42      abort ();
      43    if (test4(1, 1000) != 0)
      44      abort ();
      45    return 0;
      46  }
      47