1*f4a2713aSLionel Sambuc // RUN: %clang_cc1 -fsyntax-only -verify %s 2*f4a2713aSLionel Sambuc 3*f4a2713aSLionel Sambuc namespace test0 { 4*f4a2713aSLionel Sambuc struct BASE { 5*f4a2713aSLionel Sambuc operator int &(); // expected-note {{candidate function}} 6*f4a2713aSLionel Sambuc }; 7*f4a2713aSLionel Sambuc struct BASE1 { 8*f4a2713aSLionel Sambuc operator int &(); // expected-note {{candidate function}} 9*f4a2713aSLionel Sambuc }; 10*f4a2713aSLionel Sambuc 11*f4a2713aSLionel Sambuc struct B : public BASE, BASE1 {}; 12*f4a2713aSLionel Sambuc 13*f4a2713aSLionel Sambuc extern B f(); 14*f4a2713aSLionel Sambuc B b1; 15*f4a2713aSLionel Sambuc 16*f4a2713aSLionel Sambuc void func(const int ci, const char cc); // expected-note {{candidate function}} 17*f4a2713aSLionel Sambuc void func(const char ci, const B b); // expected-note {{candidate function}} 18*f4a2713aSLionel Sambuc void func(const B b, const int ci); // expected-note {{candidate function}} 19*f4a2713aSLionel Sambuc Test1()20*f4a2713aSLionel Sambuc const int Test1() { 21*f4a2713aSLionel Sambuc 22*f4a2713aSLionel Sambuc func(b1, f()); // expected-error {{call to 'func' is ambiguous}} 23*f4a2713aSLionel Sambuc return f(); // expected-error {{conversion from 'test0::B' to 'const int' is ambiguous}} 24*f4a2713aSLionel Sambuc } 25*f4a2713aSLionel Sambuc 26*f4a2713aSLionel Sambuc // This used to crash when comparing the two operands. 27*f4a2713aSLionel Sambuc void func2(const char cc); // expected-note {{candidate function}} 28*f4a2713aSLionel Sambuc void func2(const int ci); // expected-note {{candidate function}} Test2()29*f4a2713aSLionel Sambuc void Test2() { 30*f4a2713aSLionel Sambuc func2(b1); // expected-error {{call to 'func2' is ambiguous}} 31*f4a2713aSLionel Sambuc } 32*f4a2713aSLionel Sambuc } 33*f4a2713aSLionel Sambuc 34*f4a2713aSLionel Sambuc namespace test1 { 35*f4a2713aSLionel Sambuc struct E; 36*f4a2713aSLionel Sambuc struct A { 37*f4a2713aSLionel Sambuc A (E&); 38*f4a2713aSLionel Sambuc }; 39*f4a2713aSLionel Sambuc 40*f4a2713aSLionel Sambuc struct E { 41*f4a2713aSLionel Sambuc operator A (); 42*f4a2713aSLionel Sambuc }; 43*f4a2713aSLionel Sambuc 44*f4a2713aSLionel Sambuc struct C { 45*f4a2713aSLionel Sambuc C (E&); 46*f4a2713aSLionel Sambuc }; 47*f4a2713aSLionel Sambuc 48*f4a2713aSLionel Sambuc void f1(A); // expected-note {{candidate function}} 49*f4a2713aSLionel Sambuc void f1(C); // expected-note {{candidate function}} 50*f4a2713aSLionel Sambuc Test2()51*f4a2713aSLionel Sambuc void Test2() 52*f4a2713aSLionel Sambuc { 53*f4a2713aSLionel Sambuc E b; 54*f4a2713aSLionel Sambuc f1(b); // expected-error {{call to 'f1' is ambiguous}} 55*f4a2713aSLionel Sambuc // ambiguous because b -> C via constructor and 56*f4a2713aSLionel Sambuc // b -> A via constructor or conversion function. 57*f4a2713aSLionel Sambuc } 58*f4a2713aSLionel Sambuc } 59*f4a2713aSLionel Sambuc 60*f4a2713aSLionel Sambuc namespace rdar8876150 { 61*f4a2713aSLionel Sambuc struct A { operator bool(); }; 62*f4a2713aSLionel Sambuc struct B : A { }; 63*f4a2713aSLionel Sambuc struct C : A { }; 64*f4a2713aSLionel Sambuc struct D : B, C { }; 65*f4a2713aSLionel Sambuc f(D d)66*f4a2713aSLionel Sambuc bool f(D d) { return !d; } // expected-error{{ambiguous conversion from derived class 'rdar8876150::D' to base class 'rdar8876150::A':}} 67*f4a2713aSLionel Sambuc } 68