1 // RUN: %clang_cc1 -std=c++11 -verify %s
2 //
3 // Note: [class.inhctor] was removed by P0136R1. This tests the new behavior
4 // for the wording that used to be there.
5 
6 template<int> struct X {};
7 
8 // A[n inheriting] constructor [...] has the same access as the corresponding
9 // constructor [in the base class].
10 struct A {
11 public:
AA12   A(X<0>) {}
13 protected:
AA14   A(X<1>) {} // expected-note 2{{declared protected here}}
15 private:
AA16   A(X<2>) {} // expected-note 2{{declared private here}}
17   friend class FA;
18 };
19 
20 struct B : A {
21   using A::A;
22   friend class FB;
23 };
24 
25 B b0{X<0>{}};
26 B b1{X<1>{}}; // expected-error {{calling a protected constructor}}
27 B b2{X<2>{}}; // expected-error {{calling a private constructor}}
28 
29 struct C : B {
CC30   C(X<0> x) : B(x) {}
CC31   C(X<1> x) : B(x) {}
32 };
33 
34 struct FB {
35   B b0{X<0>{}};
36   B b1{X<1>{}};
37 };
38 
39 struct FA : A {
40   using A::A;
41 };
42 FA fa0{X<0>{}};
43 FA fa1{X<1>{}}; // expected-error {{calling a protected constructor}}
44 FA fa2{X<2>{}}; // expected-error {{calling a private constructor}}
45 
46 
47 // It is deleted if the corresponding constructor [...] is deleted.
48 struct G {
49   G(int) = delete; // expected-note {{'G' has been explicitly marked deleted here}}
50   template<typename T> G(T*) = delete; // expected-note {{'G<const char>' has been explicitly marked deleted here}}
51 };
52 struct H : G {
53   using G::G;
54 };
55 H h1(5); // expected-error {{call to deleted constructor of 'H'}}
56 H h2("foo"); // expected-error {{call to deleted constructor of 'H'}}
57 
58 
59 // Core defect: It is also deleted if multiple base constructors generate the
60 // same signature.
61 namespace DRnnnn {
62   struct A {
ADRnnnn::A63     constexpr A(int, float = 0) {}
ADRnnnn::A64     explicit A(int, int = 0) {} // expected-note {{candidate}}
65 
66     A(int, int, int = 0) = delete; // expected-note {{deleted}}
67   };
68   struct B : A {
69     using A::A; // expected-note 2{{inherited here}}
70   };
71 
72   constexpr B b0(0, 0.0f); // ok, constexpr
73   B b1(0, 1); // expected-error {{call to constructor of 'DRnnnn::B' is ambiguous}}
74 }
75