/* ----------------------------------------------------------------------- */#if TEST == 1{    struct M P A __s    {        unsigned x : 12;        unsigned char y : 7;        unsigned z : 28;        unsigned a: 4;        unsigned b: 5;    };    TEST_STRUCT(0x333,0x44,0x555555,6,7);} /* ----------------------------------------------------------------------- */#elif TEST == 2{    struct M P __s    {        int x: 12;        char y: 6;        long long z:63;        A char a:4;        long long b:2;     };    TEST_STRUCT(3,30,0x123456789abcdef0LL,5,2);} /* ----------------------------------------------------------------------- */#elif TEST == 3{    struct M P __s    {        unsigned x:5, y:5, :0, z:5; char a:5; A short b:5;    };    TEST_STRUCT(21,23,25,6,14);} /* ----------------------------------------------------------------------- */#elif TEST == 4{    struct M P __s {        int x : 3;        int : 2;        int y : 1;        int : 0;        int z : 5;        int a : 7;        unsigned int b : 7;    };    TEST_STRUCT(3,1,15,120,120);} /* ----------------------------------------------------------------------- */#elif TEST == 5{    struct M P __s {        long long x : 45;        long long : 2;        long long y : 30;        unsigned long long z : 38;        char a; short b;    };    TEST_STRUCT(0x123456789ULL, 120<<25, 120, 0x44, 0x77);} /* ----------------------------------------------------------------------- */#elif TEST == 6{    struct M P __s {	int a;	signed char b;	int x : 12, y : 4, : 0, : 4, z : 3;	char d;    };    TEST_STRUCT(1,2,3,4,-3);} /* ----------------------------------------------------------------------- */#elif TEST == 7{#ifdef _WIN32    typedef long long int ll;#else    typedef long int ll;#endif    struct M P __s {        ll d : 16;        ll b : 16;        ll x : 16;        ll y : 1;        ll z : 2;        ll a : 11;        ll e : 1;        ll f : 1;    };    TEST_STRUCT(1,2,3,4,5);} /* ----------------------------------------------------------------------- */#elif defined PACK #if PACK# pragma pack(push,1)# define P //_P#else# define P#endif printf("\n\n" + 2*top);#define TEST 1#include SELFtop = 0;#define TEST 2#include SELF#define TEST 3#include SELF#define TEST 4#include SELF#define TEST 5#include SELF#define TEST 6#include SELF#define TEST 7#include SELF #if PACK# pragma pack(pop)#endif #undef P#undef PACK /* ----------------------------------------------------------------------- */#elif defined ALIGN #if ALIGN# define A _A(16)#else# define A#endif #define PACK 0#include SELF#define PACK 1#include SELF #undef A#undef ALIGN /* ----------------------------------------------------------------------- */#elif defined MS_BF #if MS_BF# ifdef __TINYC__#  pragma comment(option, "-mms-bitfields")# elif defined __GNUC__#  define M __attribute__((ms_struct))# endif#else# ifdef __TINYC__#  pragma comment(option, "-mno-ms-bitfields")# elif defined __GNUC__#  define M __attribute__((gcc_struct))# endif#endif#ifndef M# define M#endif #define ALIGN 0#include SELF#define ALIGN 1#include SELF #undef M#undef MS_BF /* ----------------------------------------------------------------------- */#else #include <stdio.h>#include <string.h>/* some gcc headers #define __attribute__ to empty if it's not gcc */#undef __attribute__ void dump(void *p, int s){    int i;    for (i = s; --i >= 0;)        printf("%02X", ((unsigned char*)p)[i]);    printf("\n");} #define pv(m) \    printf(sizeof (s->m + 0) == 8 ? " %016llx" : " %02x", s->m) #define TEST_STRUCT(v1,v2,v3,v4,v5) { \        struct __s _s, *s = & _s; \        printf("\n---- TEST %d%s%s%s ----\n" + top, \            TEST, MS_BF?" - MS-BITFIELDS":"", \            PACK?" - PACKED":"", \            ALIGN?" - WITH ALIGN":""); \        memset(s, 0, sizeof *s); \        s->x = -1, s->y = -1, s->z = -1, s->a = -1, s->b = -1; \        printf("bits in use : "), dump(s, sizeof *s); \        s->x = v1, s->y = v2, s->z = v3, s->a += v4, ++s->a, s->b = v5; \        printf("bits as set : "), dump(s, sizeof *s); \        printf("values      :"), pv(x), pv(y), pv(z), pv(a), pv(b), printf("\n"); \        printf("align/size  : %d %d\n", alignof(struct __s),sizeof(struct __s)); \    } #ifdef _MSC_VER# define _A(n) __declspec(align(n))# define _P# define alignof(x) __alignof(x)#else# define _A(n) __attribute__((aligned(n)))# define _P __attribute__((packed))# define alignof(x) __alignof__(x)#endif #ifndef MS_BITFIELDS# define MS_BITFIELDS 0#endif #define SELF "95_bitfields.c" int top = 1; int main(){#define MS_BF MS_BITFIELDS#include SELF    return 0;} /* ----------------------------------------------------------------------- */#endif#undef TEST