gcc/testsuite/c-c++-common/torture/pr53505.c

   1 /* PR tree-optimization/53505 */
   2 /* { dg-do run } */
   3
   4 #include <stdbool.h>
   5
   6 struct A
   7 {
   8   unsigned int a;
   9   unsigned char c1, c2;
  10   bool b1 : 1;
  11   bool b2 : 1;
  12   bool b3 : 1;
  13 };
  14
  15 void
  16 foo (const struct A *x, int y)
  17 {
  18   int s = 0, i;
  19   for (i = 0; i < y; ++i)
  20     {
  21       const struct A a = x[i];
  22       s += a.b1 ? 1 : 0;
  23     }
  24   if (s != 0)
  25     __builtin_abort ();
  26 }
  27
  28 int
  29 main ()
  30 {
  31   struct A x[100];
  32   int i;
  33   __builtin_memset (x, -1, sizeof (x));
  34   for (i = 0; i < 100; i++)
  35     {
  36       x[i].b1 = false;
  37       x[i].b2 = false;
  38       x[i].b3 = false;
  39     }
  40   foo (x, 100);
  41   return 0;
  42 }