A moved-from std::vector<int> will always be empty. However, a moved-from std::vector<int, custom_stateful_allocator> may not be. Howard Hinnant had a Stack Ov

A moved-from std::vector<int> will always be empty. However, a moved-from std::vector<int, custom_stateful_allocator> may not be. Howard Hinnant had a Stack Overflow reply a while back going through the possible corner cases of this precise question: https://stackoverflow.com/a/17735913 https://stackoverflow.com/a/17735913