heap corruption when leaving scope with unique_ptr

Question

I face a problem similar to void pointer returned from function heap corruption The similarity is that I get "Heap corruption" message when leaving the scope where unique_ptr is used. Here the code: ``` void CMyClass::SomeMethod () { std::unique_ptr spMyInterface; spMyInterface.reset(new CMyInterfaceObject()); // CMyInterfaceObject is derived from IMyInterface any_list.push_back(spMyInterface.get()); // any_list: std::list any_list.clear(); // only clears the pointers, but doesn't delete it // when leaving the scope, unique_ptr deletes the allocated objects... -> heap corruption } ``` Any idea why this happens?

Accepted Answer

std::unique_ptr is a smart pointer that retains sole ownership of an object through a pointer and destroys that object when the unique_ptr goes out of scope.

In your case, you have declared `std::unique_ptr<IMyInterface> spMyInterface;` inside of SomeMethod() so as soon as the execution leaves the scope of SomeMethod() your object gets destroyed.

Take a look at unique_ptr

heap corruption when leaving scope with unique_ptr

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