1*f4a2713aSLionel Sambuc // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11 2*f4a2713aSLionel Sambuc 3*f4a2713aSLionel Sambuc enum E2 { }; 4*f4a2713aSLionel Sambuc 5*f4a2713aSLionel Sambuc struct A { 6*f4a2713aSLionel Sambuc operator E2&(); // expected-note 3 {{candidate function}} 7*f4a2713aSLionel Sambuc }; 8*f4a2713aSLionel Sambuc 9*f4a2713aSLionel Sambuc struct B { 10*f4a2713aSLionel Sambuc operator E2&(); // expected-note 3 {{candidate function}} 11*f4a2713aSLionel Sambuc }; 12*f4a2713aSLionel Sambuc 13*f4a2713aSLionel Sambuc struct C : B, A { 14*f4a2713aSLionel Sambuc }; 15*f4a2713aSLionel Sambuc test(C c)16*f4a2713aSLionel Sambucvoid test(C c) { 17*f4a2713aSLionel Sambuc const E2 &e2 = c; // expected-error {{reference initialization of type 'const E2 &' with initializer of type 'C' is ambiguous}} 18*f4a2713aSLionel Sambuc } 19*f4a2713aSLionel Sambuc 20*f4a2713aSLionel Sambuc void foo(const E2 &);// expected-note{{passing argument to parameter here}} 21*f4a2713aSLionel Sambuc re(C c)22*f4a2713aSLionel Sambucconst E2 & re(C c) { 23*f4a2713aSLionel Sambuc foo(c); // expected-error {{reference initialization of type 'const E2 &' with initializer of type 'C' is ambiguous}} 24*f4a2713aSLionel Sambuc 25*f4a2713aSLionel Sambuc return c; // expected-error {{reference initialization of type 'const E2 &' with initializer of type 'C' is ambiguous}} 26*f4a2713aSLionel Sambuc } 27*f4a2713aSLionel Sambuc 28*f4a2713aSLionel Sambuc 29