modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/990211-1.c (about)

     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  }