Where Does the this Pointer REALLY Point in C++? (It’s Not the Object) скачать в хорошем качестве

Where Does the this Pointer REALLY Point in C++? (It’s Not the Object)

Most C++ developers believe that the this pointer always points to the object’s address. That belief is technically wrong — and in real-world C++ code, it can lead straight to undefined behavior. In this video, we take a deep dive into what the `this` pointer REALLY is in C++. You’ll learn: Why `this` is NOT guaranteed to point to the start of an object How multiple inheritance breaks the “this == object address” illusion How compilers adjust the `this` pointer behind the scenes Why virtual functions in multiple inheritance require thunks How ABI rules, not the C++ language itself, define object layout We’ll walk through real memory layouts, compiler behavior, and virtual dispatch paths used by GCC and Clang. If you’ve ever: cast `this` with `reinterpret_cast` assumed `this` points to the most-derived object relied on object memory layouts serialized objects via raw memory dumps crossed ABI boundaries between modules …then this video explains exactly why that’s dangerous. Once you understand that C++ member functions are just functions with a hidden parameter, many “mysterious” behaviors suddenly make perfect sense. In the next video, we’ll push this idea further and explain why the real boundary of C++ is the ABI, not the language itself.