clang/test/CXX/class.derived/class.abstract/p16.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s
   2
   3 struct A {
   4   virtual void a(); // expected-note{{overridden virtual function is here}}
   5   virtual void b() = delete; // expected-note{{overridden virtual function is here}}
   6 };
   7
   8 struct B: A {
   9   virtual void a() = delete; // expected-error{{deleted function 'a' cannot override a non-deleted function}}
  10   virtual void b(); // expected-error{{non-deleted function 'b' cannot override a deleted function}}
  11 };
  12
  13 struct C: A {
  14   virtual void a();
  15   virtual void b() = delete;
  16 };
  17
  18 struct E;
  19 struct F;
  20 struct G;
  21 struct H;
  22 struct D {
  23   virtual E &operator=(const E &); // expected-note {{here}}
  24   virtual F &operator=(const F &);
  25   virtual G &operator=(G&&); // expected-note {{here}}
  26   virtual H &operator=(H&&); // expected-note {{here}}
  27   friend struct F;
  28
  29 private:
  30   D &operator=(const D&) = default;
  31   D &operator=(D&&) = default;
  32   virtual ~D(); // expected-note 2{{here}}
  33 };
  34 struct E : D {};
  35 // expected-error@-1 {{deleted function '~E' cannot override a non-deleted function}}
  36 // expected-note@-2 {{destructor of 'E' is implicitly deleted because base class 'D' has an inaccessible destructor}}
  37 // expected-error@-3 {{deleted function 'operator=' cannot override a non-deleted function}}
  38 // expected-note@-4 {{copy assignment operator of 'E' is implicitly deleted because base class 'D' has an inaccessible copy assignment operator}}
  39 struct F : D {};
  40 struct G : D {};
  41 // expected-error@-1 {{deleted function '~G' cannot override a non-deleted function}}
  42 // expected-note@-2 {{destructor of 'G' is implicitly deleted because base class 'D' has an inaccessible destructor}}
  43 // expected-error@-3 {{deleted function 'operator=' cannot override a non-deleted function}}
  44 // expected-note@-4 {{move assignment operator of 'G' is implicitly deleted because base class 'D' has an inaccessible move assignment operator}}
  45 struct H : D { // expected-note {{deleted because base class 'D' has an inaccessible move assignment}}
  46   H &operator=(H&&) = default; // expected-warning {{implicitly deleted}} expected-note{{replace 'default'}}
  47   // expected-error@-1 {{deleted function 'operator=' cannot override a non-deleted function}}
  48   // expected-note@-3 {{move assignment operator of 'H' is implicitly deleted because base class 'D' has an inaccessible move assignment operator}}
  49   ~H();
  50 };