In C++11 given

struct A {
A(int a);
A(A&&)=delete;
};

The following

std::vector<A> v;
v.emplace_back(1);

A. Well-formed
B. Requires diagnostic
C. Invokes undefined behavior

Answer first, read answer below.#Cplusplus #Programming #CppPolls

— Shafik Yaghmour (@shafikyaghmour) June 19, 2018