<ul><li>In C++, custom copy constructors are essential when dealing with complicated objects that require deep copying of memory.</li><li>If an object contains pointers or non-copyable types like std::mutex, a custom copy constructor must be implemented to ensure proper copying behavior.</li><li>Failure to define a custom copy constructor can lead to unexpected behavior, such as shallow copying of memory or compilation errors due to deleted default constructors.</li><li>By adding a custom copy constructor, one must also remember to add a default constructor to prevent compilation errors and ensure proper object construction.</li></ul>

Why implement custom copy constructor in C++?

Discover more