struct_size.c

#include <stdio.h>
#include <stdint.h>

struct foo
{
    char b;
    __int128_t bar;
    char baz;
    __int128_t barz;
    char barzz;
};

struct var4_aligned
{
    char a;
    int b;
    char c;
};

struct var8_aligned
{
    char a;
    int64_t b;
    char c;
};

struct var16_aligned
{
    char a;
    __int128_t b;
    char c;
};

struct var16_aligned_member80
{
    char a;
    struct foo b;
    char c;
};

struct var
{
    char a;
    volatile struct foo b;
    char c;
};
int main()
{
    printf("Size of var: %ld, foo: %ld\n", sizeof(struct var), sizeof(struct foo));
    return 0;
}