gcc/testsuite/gcc.c-torture/execute/pr79737-1.c

   1 /* PR tree-optimization/79737 */
   2
   3 #if __SIZEOF_INT__ < 4
   4   __extension__ typedef __INT32_TYPE__ int32_t;
   5 #else
   6   typedef int int32_t;
   7 #endif
   8
   9 #pragma pack(1)
  10 struct S
  11 {
  12   int32_t b:18;
  13   int32_t c:1;
  14   int32_t d:24;
  15   int32_t e:15;
  16   int32_t f:14;
  17 } i;
  18 int g, j, k;
  19 static struct S h;
  20
  21 void
  22 foo ()
  23 {
  24   for (j = 0; j < 6; j++)
  25     k = 0;
  26   for (; k < 3; k++)
  27     {
  28       struct S m = { 5, 0, -5, 9, 5 };
  29       h = m;
  30       if (g)
  31         i = m;
  32       h.e = 0;
  33     }
  34 }
  35
  36 int
  37 main ()
  38 {
  39   foo ();
  40   if (h.e != 0)
  41     __builtin_abort ();
  42   return 0;
  43 }