gnu/dist/gcc4/gcc/testsuite/gcc.c-torture/execute/nestfunc-3.c

   1
   2 extern long foo (long, long, long (*) (long, long));
   3 extern long use (long (*) (long, long), long, long);
   4
   5 int
   6 main (void)
   7 {
   8 #ifndef NO_TRAMPOLINES
   9   long sum = 0;
  10   long i;
  11
  12   long nested_0 (long a, long b)
  13     {
  14       if (a > 2 * b)
  15         return a - b;
  16       else
  17         return b - a;
  18     }
  19
  20   long nested_1 (long a, long b)
  21     {
  22       return use (nested_0, b, a) + sum;
  23     }
  24
  25   long nested_2 (long a, long b)
  26     {
  27       return nested_1 (b, a);
  28     }
  29
  30   for (i = 0; i < 10; ++i)
  31     {
  32       long j;
  33
  34       for (j = 0; j < 10; ++j)
  35         {
  36           long k;
  37
  38           for (k = 0; k < 10; ++k)
  39             sum += foo (i, j > k ? j - k : k - j, nested_2);
  40         }
  41     }
  42
  43   if ((sum & 0xffffffff) != 0xbecfcbf5)
  44     abort ();
  45 #endif
  46
  47   exit (0);
  48 }
  49
  50 long
  51 use (long (* func)(long, long), long a, long b)
  52 {
  53   return func (b, a);
  54 }
  55
  56 long
  57 foo (long a, long b, long (* func) (long, long))
  58 {
  59   return func (a, b);
  60 }