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#define STATIC_ASSERT(condition) \
int some_array##__LINE__[(condition) ? 1 : -1]
struct Z1
{
char ch;
int i:3;
char ch2;
// there is end-of-struct padding because of the int
} z1;
struct Z2
{
char ch;
char i:3;
char ch2;
// there is no end-of-struct padding
} z2;
struct Z3
{
char ch;
int i:3; // bit-fields do not get padding!
} z3;
struct Z4
{
int i;
long long int x; // pads to 8
char ch; // 7 end-of-struct padding
} z4;
struct Z5
{
char ch;
long long int x[]; // pads to 8, but has no size
} z5;
STATIC_ASSERT(sizeof(struct Z1)==1+1+1+1);
#ifdef __GNUC__
STATIC_ASSERT(__builtin_offsetof(struct Z1, ch2)==2);
#endif
STATIC_ASSERT(sizeof(struct Z2)==1+1+1);
STATIC_ASSERT(sizeof(struct Z3)==1+1+2);
STATIC_ASSERT(sizeof(struct Z4)==4+4+8+1+7);
STATIC_ASSERT(sizeof(struct Z5)==8);
int main()
{
}
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