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}}
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 };
51