gcc/testsuite/gcc.c-torture/compile/pr79386.c

   1 /* PR rtl-optimization/79386 */
   2
   3 int a, b;
   4
   5 int
   6 foo (int x)
   7 {
   8   int c;
   9   int *d, *e;
  10
  11   if (b == 0)
  12     {
  13       c = 0;
  14       e = &b;
  15       d = &b;
  16     }
  17   else
  18     {
  19       int f;
  20
  21       c = 1;
  22       for (f = 0; f < 9; ++f)
  23         c *= 3;
  24       e = (int *) (__UINTPTR_TYPE__) c;
  25       d = &x;
  26     }
  27   *e = c < 3;
  28   if (*e != 0)
  29     {
  30       int g;
  31
  32       b += (a != 0) ? a : 1;
  33       if (g != 0 || x != 0)
  34         *d = 0;
  35       if (b >= 0)
  36         {
  37           if (g != 0)
  38             g = x;
  39           if (*d / g != 0)
  40             for (;;)
  41               ;
  42         }
  43     }
  44
  45   return b * (a != 0 && *d != 0);
  46 }