text: // RUN: clang-cc -fsyntax-only -verify %s 
  
  struct A {
     A() : value(), cvalue() { } // expected-error {{cannot initialize the member to null in default constructor because reference member 'value' cannot be null-initialized}} \
                                 // expected-error {{constructor for 'struct A' must explicitly initialize the reference member 'value'}}
     int &value; // expected-note{{declared at}} {{expected-note{{declared at}}
     const int cvalue;
  };
  
  struct B {
  };
  
  struct X {
     X() { }      // expected-error {{constructor for 'struct X' must explicitly initialize the reference member 'value'}} \
                  // expected-error {{constructor for 'struct X' must explicitly initialize the const member 'cvalue'}} \
                  // expected-error {{constructor for 'struct X' must explicitly initialize the reference member 'b'}} \
                  // expected-error {{constructor for 'struct X' must explicitly initialize the const member 'cb'}}
     int &value; // expected-note{{declared at}}
     const int cvalue; // expected-note{{declared at}}
     B& b; // expected-note{{declared at}}
     const B cb; // expected-note{{declared at}}
  };
  