msvc is_copy_assignable always true?

Question

#include 

class Test
{
public:
    Test(const Test &) = delete;
    Test &operator=(const Test &) = delete;
};

void fn(Test &a,          


        

Answer 1

May be a bit too late, but I have a workaround here: define another copy-and-move assignment operator, also as a deleted one. The compiler gives a warning, complaining about multiple copy operators (C4522), so you have to disable it for the class:

#pragma warning (disable: 4522)
class A
{
    A& operator=(const A&) = delete;
    A& operator=(A) = delete;
};
#pragma warning (default: 4522)

Now std::is_copy_assignable::value is false.