1*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11 2*67e74705SXin Li 3*67e74705SXin Li enum E2 { }; 4*67e74705SXin Li 5*67e74705SXin Li struct A { 6*67e74705SXin Li operator E2&(); // expected-note 3 {{candidate function}} 7*67e74705SXin Li }; 8*67e74705SXin Li 9*67e74705SXin Li struct B { 10*67e74705SXin Li operator E2&(); // expected-note 3 {{candidate function}} 11*67e74705SXin Li }; 12*67e74705SXin Li 13*67e74705SXin Li struct C : B, A { 14*67e74705SXin Li }; 15*67e74705SXin Li test(C c)16*67e74705SXin Livoid test(C c) { 17*67e74705SXin Li const E2 &e2 = c; // expected-error {{reference initialization of type 'const E2 &' with initializer of type 'C' is ambiguous}} 18*67e74705SXin Li } 19*67e74705SXin Li 20*67e74705SXin Li void foo(const E2 &);// expected-note{{passing argument to parameter here}} 21*67e74705SXin Li re(C c)22*67e74705SXin Liconst E2 & re(C c) { 23*67e74705SXin Li foo(c); // expected-error {{reference initialization of type 'const E2 &' with initializer of type 'C' is ambiguous}} 24*67e74705SXin Li 25*67e74705SXin Li return c; // expected-error {{reference initialization of type 'const E2 &' with initializer of type 'C' is ambiguous}} 26*67e74705SXin Li } 27*67e74705SXin Li 28*67e74705SXin Li 29