1// RUN: %clang_cc1 -std=c++11 -verify %s
2
3namespace std_example {
4  struct A { A(int); };
5  struct B : A { using A::A; };
6
7  struct C1 : B { using B::B; };
8  struct C2 : B { using B::B; };
9
10  struct D1 : C1, C2 {
11    using C1::C1; // expected-note {{inherited from base class 'C1' here}}
12    using C2::C2; // expected-note {{inherited from base class 'C2' here}}
13  };
14
15  struct V1 : virtual B { using B::B; };
16  struct V2 : virtual B { using B::B; };
17
18  struct D2 : V1, V2 {
19    using V1::V1;
20    using V2::V2;
21  };
22
23  D1 d1(0); // expected-error {{constructor of 'A' inherited from multiple base class subobjects}}
24  D2 d2(0); // OK: initializes virtual B base class, which initializes the A base class
25            // then initializes the V1 and V2 base classes as if by a defaulted default constructor
26
27  struct M { M(); M(int); };
28  struct N : M { using M::M; };
29  struct O : M {};
30  struct P : N, O { using N::N; using O::O; };
31  P p(0); // OK: use M(0) to initialize N's base class,
32          // use M() to initialize O's base class
33}
34