gcc/testsuite/gcc.c-torture/execute/pr67781.c

   1 /* { dg-require-effective-target int32plus } */
   2 #ifdef __UINT32_TYPE__
   3 typedef __UINT32_TYPE__ uint32_t;
   4 #else
   5 typedef unsigned uint32_t;
   6 #endif
   7
   8 #ifdef __UINT8_TYPE__
   9 typedef __UINT8_TYPE__ uint8_t;
  10 #else
  11 typedef unsigned char uint8_t;
  12 #endif
  13
  14 struct
  15 {
  16   uint32_t a;
  17   uint8_t b;
  18 } s = { 0x123456, 0x78 };
  19
  20 int pr67781()
  21 {
  22   uint32_t c = (s.a << 8) | s.b;
  23   return c;
  24 }
  25
  26 int
  27 main ()
  28 {
  29   if (sizeof (uint32_t) * __CHAR_BIT__ != 32)
  30     return 0;
  31
  32   if (pr67781 () != 0x12345678)
  33     __builtin_abort ();
  34   return 0;
  35 }