1  int global;
       2  
       3  extern void trap (int, int);
       4  static void quit (int);
       5  static int foo (int);
       6  
       7  int
       8  main ()
       9  {
      10    if (foo (0) != 0 || global != 0)
      11      quit (1);
      12    if (foo (1) != 1 || global != 1)
      13      quit (1);
      14    if (foo (2) != 2 || global != 2)
      15      quit (1);
      16    if (foo (3) != 3 || global != 3)
      17      quit (1);
      18    if (foo (4) != 4 || global != 4)
      19      quit (1);
      20    if (foo (5) != 5 || global != 5)
      21      quit (1);
      22    if (foo (6) != 6 || global != 6)
      23      quit (1);
      24    if (foo (7) != 7 || global != 7)
      25      quit (1);
      26    if (foo (8) != 8 || global != 8)
      27      quit (1);
      28    quit (0);
      29  }
      30  
      31  void
      32  __main ()
      33  {
      34  }
      35  
      36  static void
      37  quit (int status)
      38  {
      39    trap (1, status);
      40  }
      41  
      42  int
      43  bar (int i)
      44  {
      45    global = i;
      46    return i;
      47  }
      48  
      49  int
      50  bar0 (int i)
      51  {
      52    global = 0;
      53    return i;
      54  }
      55  
      56  int
      57  bar1 (int i)
      58  {
      59    global = 1;
      60    return i;
      61  }
      62  
      63  int
      64  bar2 (int i)
      65  {
      66    global = 2;
      67    return i;
      68  }
      69  
      70  int
      71  bar3 (int i)
      72  {
      73    global = 3;
      74    return i;
      75  }
      76  
      77  int
      78  bar4 (int i)
      79  {
      80    global = 4;
      81    return i;
      82  }
      83  
      84  int
      85  bar5 (int i)
      86  {
      87    global = 5;
      88    return i;
      89  }
      90  
      91  int
      92  bar6 (int i)
      93  {
      94    global = 6;
      95    return i;
      96  }
      97  
      98  int
      99  bar7 (int i)
     100  {
     101    global = 7;
     102    return i;
     103  }
     104  
     105  int
     106  foo (int i)
     107  {
     108    switch (i)
     109      {
     110      case 0: bar0 (0); return 0;
     111      case 1: bar1 (1); return 1;
     112      case 2: bar2 (2); return 2;
     113      case 3: bar3 (3); return 3;
     114      case 4: bar4 (4); return 4;
     115      case 5: bar5 (5); return 5;
     116      case 6: bar6 (6); return 6;
     117      case 7: bar7 (7); return 7;
     118      default: return bar (i);
     119      }
     120  }