gcc/testsuite/gcc.c-torture/execute/pr79737-2.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, j;
  18
  19 void
  20 foo ()
  21 {
  22   i.e = 0;
  23   i.b = 5;
  24   i.c = 0;
  25   i.d = -5;
  26   i.f = 5;
  27 }
  28
  29 void
  30 bar ()
  31 {
  32   j.b = 5;
  33   j.c = 0;
  34   j.d = -5;
  35   j.e = 0;
  36   j.f = 5;
  37 }
  38
  39 int
  40 main ()
  41 {
  42   foo ();
  43   bar ();
  44   asm volatile ("" : : : "memory");
  45   if (i.b != j.b || i.c != j.c || i.d != j.d || i.e != j.e || i.f != j.f)
  46     __builtin_abort ();
  47 }