validation/packed-bitfield3.c

   1 #define __packed __attribute__((packed))
   2
   3 typedef unsigned char   u8;
   4 typedef __UINT16_TYPE__ u16;
   5 typedef __UINT32_TYPE__ u32;
   6 typedef __UINT64_TYPE__ u64;
   7
   8 struct b {
   9         u32     a:1;
  10         u32     b:2;
  11         u32     c:4;
  12         u32     d:8;
  13         u32     e:16;
  14 } __packed;
  15 _Static_assert(__alignof(struct b) == 1);
  16 _Static_assert(   sizeof(struct b) == 4);
  17
  18 struct c {
  19         u8      a;
  20         u8      b;
  21         u64     c:48;
  22 } __packed;
  23 _Static_assert(__alignof(struct c) == 1);
  24 _Static_assert(   sizeof(struct c) == 8);
  25
  26 /*
  27  * check-name: packed-bitfield3
  28  */