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