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: 12 A(X<0>) {} 13 protected: 14 A(X<1>) {} // expected-note 2{{declared protected here}} 15 private: 16 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 { 30 C(X<0> x) : B(x) {} 31 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 { 63 constexpr A(int, float = 0) {} // expected-note {{candidate}} 64 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 3{{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
