1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s 3 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s 4 5 namespace A { 6 class A { 7 friend void func(A); 8 friend A operator+(A,A); 9 }; 10 } 11 12 namespace B { 13 class B { 14 static void func(B); 15 }; 16 B operator+(B,B); 17 } 18 19 namespace D { 20 class D {}; 21 } 22 23 namespace C { 24 class C {}; // expected-note {{candidate constructor (the implicit copy constructor) not viable: no known conversion from 'B::B' to 'const C::C &' for 1st argument}} 25 #if __cplusplus >= 201103L // C++11 or later 26 // expected-note@-2 {{candidate constructor (the implicit move constructor) not viable: no known conversion from 'B::B' to 'C::C &&' for 1st argument}} 27 #endif 28 void func(C); // expected-note {{'C::func' declared here}} \ 29 // expected-note {{passing argument to parameter here}} 30 C operator+(C,C); 31 D::D operator+(D::D,D::D); 32 } 33 34 namespace D { 35 using namespace C; 36 } 37 38 namespace Test { 39 void test() { 40 func(A::A()); 41 // FIXME: namespace-aware typo correction causes an extra, misleading 42 // message in this case; some form of backtracking, diagnostic message 43 // delaying, or argument checking before emitting diagnostics is needed to 44 // avoid accepting and printing out a typo correction that proves to be 45 // incorrect once argument-dependent lookup resolution has occurred. 46 func(B::B()); // expected-error {{use of undeclared identifier 'func'; did you mean 'C::func'?}} \ 47 // expected-error {{no viable conversion from 'B::B' to 'C::C'}} 48 func(C::C()); 49 A::A() + A::A(); 50 B::B() + B::B(); 51 C::C() + C::C(); 52 D::D() + D::D(); // expected-error {{invalid operands to binary expression ('D::D' and 'D::D')}} 53 } 54 } 55 56 // PR6716 57 namespace test1 { 58 template <class T> class A { 59 template <class U> friend void foo(A &, U); // expected-note {{not viable: 1st argument ('const A<int>') would lose const qualifier}} 60 61 public: 62 A(); 63 }; 64 65 void test() { 66 const A<int> a; 67 foo(a, 10); // expected-error {{no matching function for call to 'foo'}} 68 } 69 } 70
