1  /* Copyright (C) 1999 Free Software Foundation, Inc.
       2    Contributed by Nathan Sidwell 20 Jan 1999 <nathan@acm.org> */
       3  
       4  /* check range combining boolean operations work */
       5  
       6  extern void abort();
       7  
       8  #define N 77
       9  
      10  void func(int i)
      11  {
      12    /* fold-const does some clever things with range tests. Make sure
      13       we get (some of) them right */
      14    
      15    /* these must fail, regardless of the value of i */
      16    if ((i < 0) && (i >= 0))
      17      abort();
      18    if ((i > 0) && (i <= 0))
      19      abort();
      20    if ((i >= 0) && (i < 0))
      21      abort();
      22    if ((i <= 0) && (i > 0))
      23      abort();
      24  
      25    if ((i < N) && (i >= N))
      26      abort();
      27    if ((i > N) && (i <= N))
      28      abort();
      29    if ((i >= N) && (i < N))
      30      abort();
      31    if ((i <= N) && (i > N))
      32      abort();
      33      
      34    /* these must pass, regardless of the value of i */
      35    if (! ((i < 0) || (i >= 0)))
      36      abort();
      37    if (! ((i > 0) || (i <= 0)))
      38      abort();
      39    if (! ((i >= 0) || (i < 0)))
      40      abort();
      41    if (! ((i <= 0) || (i > 0)))
      42      abort();
      43  
      44    if (! ((i < N) || (i >= N)))
      45      abort();
      46    if (! ((i > N) || (i <= N)))
      47      abort();
      48    if (! ((i >= N) || (i < N)))
      49      abort();
      50    if (! ((i <= N) || (i > N)))
      51      abort();
      52    
      53    return;
      54  }
      55  
      56  int main()
      57  {
      58    func(0);
      59    func(1);
      60    return 0;
      61  }