gcc/testsuite/gcc.c-torture/execute/990211-1.c

   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 }