typedef __SIZE_TYPE__ Size_t;
void abort(void);

#if __SIZEOF_LONG__ < __SIZEOF_POINTER__
#define bufsize ((1LL << (8 * sizeof(Size_t) - 2))-256)
#else
#define bufsize ((1L << (8 * sizeof(Size_t) - 2))-256)
#endif

struct huge_struct {
    short buf[bufsize];
    int a;
    int b;
    int c;
    int d;
};

union huge_union {
    int a;
    char buf[bufsize];
};

Size_t union_size() {
    return sizeof(union huge_union);
}

Size_t struct_size() {
    return sizeof(struct huge_struct);
}

Size_t struct_a_offset() {
    return (Size_t)(&((struct huge_struct *)0)->a);
}

int main() {
    /* Check the exact sizeof value. bufsize is aligned on 256b. */
    if (union_size() != sizeof(char) * bufsize)
        abort();

    if (struct_size() != sizeof(short) * bufsize + 4 * sizeof(int))
        abort();

    if (struct_a_offset() < sizeof(short) * bufsize)
        abort();

    return 0;
}
