Evgeny Golovachyov

gistfile1.cpp

//    Evgeny Golovachyov
#include <string>
#include <utility>

typedef std::pair<std::string, int> Obj;

int main() {
    using namespace std;

    Obj object("Ololo", 1234);
    int* ptr = &object.second;
    char* OrigSecBytes = reinterpret_cast<char*>(ptr);

    Obj* FakeObjPtr = reinterpret_cast<Obj*>(ptr);
    char* FakeObjBytes = reinterpret_cast<char*>(FakeObjPtr);

    int* FakeSecPtr = &FakeObjPtr->second;
    char* FakeSecBytes = reinterpret_cast<char*>(FakeSecPtr);

    unsigned int offset = FakeSecBytes - FakeObjBytes;

    Obj* OrigObjPtr = reinterpret_cast<Obj*>(OrigSecBytes - offset);

    return 0;
}