Validity of pointers to internal data structure when reallocating a std::vector object

Question

Assume there is a class A that contains a vector of ints. Now assume that a vector of A\'s is created. If a reallocation of an A object occurs (so the vector object is moved) du

Answer 1

It would depend of your move constructor of A. but as it (*), it will use move constructor of vector for a, and according to http://www.cplusplus.com/reference/vector/vector/vector/

[..] no elements are constructed (their ownership is directly transferred).

So pointers to the ints themselves remain valid.

Edit: (*) A should be noexcept for that, and std::vector is not guaranteed to be noexcept.