Must a deleted constructor be private?
access-rights, c++, c++11, constructor, standards
Solution
They are different only wrt the produced diagnostics. If you make it `private`, an additional and superfluous access violation is reported:
class A
{
public:
A() = default;
private:
A(const A&) = delete;
};
int main()
{
A a;
A a2=a;
}
results in the following additional output from GCC 4.8:
main.cpp: In function 'int main()':
main.cpp:6:5: error: 'A::A(const A&)' is private
A(const A&) = delete;
^
main.cpp:12:10: error: within this context
A a2=a;
^
hence my recommendation to always make deleted methods `public`.
Problem
``` class A { public: A() = default; A(const A&) = delete; }; class A { public: A() = default; private: A(const A&) = delete; }; ``` Are these two definitions always identical to each other in any cases?