51 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++112 3enum E2 { };4 5struct A { 6 operator E2&(); // expected-note 3 {{candidate function}}7};8 9struct B { 10 operator E2&(); // expected-note 3 {{candidate function}}11};12 13struct C : B, A { 14};15 16void 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 20void foo(const E2 &);// expected-note{{passing argument to parameter here}}21 22const 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 28namespace CWG2352 {29 void f(const int * const &) = delete;30 void f(int *);31 32 void g(int * &);33 void g(const int *) = delete;34 35 void h1(int *const * const &);36 void h1(const int *const *) = delete;37 void h2(const int *const * const &) = delete;38 void h2(int *const *);39 40 void test() {41 int *x;42 // Under CWG2352, this became ambiguous. We order by qualification43 // conversion even when comparing a reference binding to a44 // non-reference-binding.45 f(x);46 g(x);47 h1(&x);48 h2(&x);49 }50}51