struct s77 {
    char d[77];
};

struct s1 {
    char d;
};

struct Foo: s77, s1 {
};

struct Off {
    static const int v = std::size_t(static_cast<s1*>(static_cast<Foo*>(nullptr)+1)) - std::size_t(static_cast<Foo*>(nullptr)+1);
};

struct Entry {
    int offset;
    void (*function)(void *member);
};

Entry descriptor[] = {
    { 0, &SomeType1::static_function },
    { 12, &SomeType2::static_function },
    { 20, &SomeType3::static_function }
};

void call(void *tuple, const Entry *entries, int n) {
    for (int i=0; i<n; i++) {
        entries[i].function(static_cast<char *>(tuple)+entries[i].offset);
    }
}