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#include <stdint.h>
struct Bits {
uint32_t : 1;
uint32_t b1 : 1;
uint32_t b2 : 2;
uint32_t : 2;
uint32_t b3 : 3;
// Unnamed bitfield (this will get removed).
uint32_t : 2;
uint32_t b4 __attribute__ ((aligned(16)));
uint32_t b5 : 5;
uint32_t b6 : 6;
uint32_t b7 : 7;
uint32_t four : 4;
};
struct MoreBits {
uint32_t a : 3;
uint8_t : 1;
uint8_t b : 1;
uint8_t c : 1;
uint8_t d : 1;
};
struct MoreBits more_bits;
struct ManySingleBits {
uint16_t b1 : 1, b2 : 1, b3 : 1, b4 : 1, b5 : 1, b6 : 1, b7 : 1, b8 : 1,
b9 : 1, b10 : 1, b11 : 1, b12 : 1, b13 : 1, b14 : 1, b15 : 1, b16 : 1,
b17 : 1;
};
struct ManySingleBits many_single_bits;
struct LargePackedBits {
uint64_t a : 36;
uint64_t b : 36;
} __attribute__((packed));
#pragma pack(1)
struct PackedBits {
char a;
uint32_t b : 5, c : 27;
};
#pragma pack()
int main(int argc, char const *argv[]) {
struct Bits bits;
bits.b1 = 1;
bits.b2 = 3;
bits.b3 = 7;
bits.b4 = 15;
bits.b5 = 31;
bits.b6 = 63;
bits.b7 = 127;
bits.four = 15;
more_bits.a = 3;
more_bits.b = 0;
more_bits.c = 1;
more_bits.d = 0;
many_single_bits.b1 = 1;
many_single_bits.b5 = 1;
many_single_bits.b7 = 1;
many_single_bits.b13 = 1;
struct PackedBits packed;
packed.a = 'a';
packed.b = 10;
packed.c = 0x7112233;
struct LargePackedBits large_packed =
(struct LargePackedBits){0xcbbbbaaaa, 0xdffffeeee};
struct LargePackedBits *large_packed_ptr = &large_packed;
return 0; // break here
}
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