Using old style C allocation in C++ be like

Why TF are you using malloc? Unless you're interop-ing with a C library that needs you to allocate (that's a shitty library if so) then you should *never* be using malloc in C++.

@Demolishun Right so you're using a C lib. That's what I said lol.

@Demolishun I said neither of those things.

@Demolishun No, you don't. Use:

alignas(T*) char *inst_ = new char[sizeof(T)];
auto inst = new (reinterpret_cast<T*>(inst_)) T(...);

inst->T::~T();
delete[] inst_;

@Demolishun If you do have to get an instance without calling the constructor that's definitely a shitty library though. Also, having user code construct objects of your internal types isn't ideal, although for structs with trivial lifetime it should be okay. Otherwise opaque pointers are preferable.

AND I WILL MAKE YOUR FACE THE GREATEST IN DEVRANT

@Demolishun Placement new doesn't allocate memory but uses existing one.