// MSVC Version: 18.00.40629
// Command line: cl ctors.cpp
// Clang Version: 3.7.0
// Command line: clang++ ctors.cpp -std=c++11

struct A
{
    A() = delete;
    A(const A&) = delete;
    A(A&&) = delete;

    template <class... Ts>
    A(Ts... ts) { }
};

struct B : public A
{
    using A::A;
};

int main()
{
    A a1;           // clang: disallowed msvc: disallowed (good)
    B b1;           // clang: disallowed msvc: allowed (bad)

    A a2(1, 2, 3);  // clang: allowed msvc: allowed (good)
    B b2(1, 2, 3);  // clang: allowed msvc: disallowed (bad)

    return 0;
}
// Full compiler output:
/* MSVC:
test.cpp(18) : error C2280: 'A::A(void)' : attempting to reference a deleted function
        test.cpp(3) : see declaration of 'A::A'
test.cpp(22) : error C2661: 'B::B' : no overloaded function takes 3 arguments

 * Clang:
test.cpp:18:7: error: call to deleted constructor of 'A'
    A a1;           // clang: disallowed msvc: disallowed (good)
      ^
test.cpp:3:5: note: 'A' has been explicitly marked deleted here
    A() = delete;
    ^
test.cpp:19:7: error: call to implicitly-deleted default constructor of 'B'
    B b1;           // clang: disallowed msvc: allowed (bad)
      ^
test.cpp:11:12: note: default constructor of 'B' is implicitly deleted because base class 'A' has a deleted default
      constructor
struct B : public A
           ^
test.cpp:3:5: note: 'A' has been explicitly marked deleted here
    A() = delete;
    ^
2 errors generated.
 */