vector serialization

Question

I am trying to binary serialize the data of vector. In this sample below I serialize to a string, and then deserialize back to a vector, but do not get the same data I start

Answer 1

strncpy is a giant pile of fail. It will terminate early on your input because the size_t have some zero bytes, which it interprets as the NULL terminator, leaving them as default-constructed 0. If you ran this test on a BE machine, all would be 0. Use std::copy.