#include <iostream>
 
struct Header {
     std::size_t datasize;
     int typecode;
};
 
template <typename T>
struct Payload {
    Header header;
    T offset[1];
 
    void* data () {
        return &offset[0];
    }
};
 
typedef unsigned char byte;
const static auto null = nullptr;
 
int main () {
 
    byte* data = new byte[sizeof(int) * 200 + sizeof(Header)];
    Payload<int>* payload = (Payload<int>*)data;
    int* properdatastart = (int*)payload->data();
 
 
    delete data;
    data = null;
    return 0;
}

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TG9sIHBvaW50ZXJz

Lol pointers