I have some code which takes a packed POD structure/class and copies it into a memory block.
struct A{ int a; int b;} a;memcpy(mymemoryblock, (void *)&a, sizeof(A));// later I get a reply and...memcpy((void *)&a, mymemoryblock, sizeof(A));This is only valid for POD types of data, and what I would like to know if there is a way I can test for POD-ness. If someone accidentally adds a member function to this class, the memcpy operations become invalid, but still compilable. This leads to very difficult to detect bugs.
Is there a is_POD_type(A) function, or some other trick that can be used to detect PODness at runtime or compile time?