[C++] Casting map causes crash

[ozuromo]

I created .exe with a map in it like this:

typedef std::map<const char*, DWORD> tmap;
tmap myMap;
myMap.insert(std::make_pair("One", 0xFFFFF));
myMap.insert(std::make_pair("Two", 0xEEEEE));
std::cout << std::hex << &myMap << std::endl;

Then, I created a .dll like this:

typedef std::map<const char*, DWORD> tmap;
tmap myMap = *(tmap*)(Output of &myMap);

But somehow, when I inject this dll the program insta crashes. Why?

[elmarcia]

Originally Posted by ozuromo

I created .exe with a map in it like this:

typedef std::map<const char*, DWORD> tmap;
tmap myMap;
myMap.insert(std::make_pair("One", 0xFFFFF));
myMap.insert(std::make_pair("Two", 0xEEEEE));
std::cout << std::hex << &myMap << std::endl;

Then, I created a .dll like this:

typedef std::map<const char*, DWORD> tmap;
tmap myMap = *(tmap*)(Output of &myMap);

But somehow, when I inject this dll the program insta crashes. Why?

Are you pausing your program execution after line ?:
std::cout << std::hex << &myMap << std::endl;

if not memory will be released and casting will point to invalid pointer