p5-0x.cpp revision 9a561d539158a30b68fc258b81a994f3fac10212 
1// RUN: %clang_cc1 -verify -std=c++11 %s
2
3struct NonTrivDtor {
4  ~NonTrivDtor();
5};
6struct DeletedDtor {
7  ~DeletedDtor() = delete;
8};
9class InaccessibleDtor {
10  ~InaccessibleDtor() = default;
11};
12
13// A defaulted destructor for a class X is defined as deleted if:
14
15// -- X is a union-like class that has a variant member with a non-trivial
16// destructor.
17union A1 { // expected-note {{here}}
18  A1();
19  NonTrivDtor n;
20};
21A1 a1; // expected-error {{deleted function}}
22struct A2 { // expected-note {{here}}
23  A2();
24  union {
25    NonTrivDtor n;
26  };
27};
28A2 a2; // expected-error {{deleted function}}
29union A3 { // expected-note {{here}}
30  A3();
31  NonTrivDtor n[3];
32};
33A3 a3; // expected-error {{deleted function}}
34struct A4 { // expected-note {{here}}
35  A4();
36  union {
37    NonTrivDtor n[3];
38  };
39};
40A4 a4; // expected-error {{deleted function}}
41
42// -- any of the non-static data members has class type M (or array thereof) and
43// M has a deleted or inaccessible destructor.
44struct B1 { // expected-note {{here}}
45  B1();
46  DeletedDtor a;
47};
48B1 b1; // expected-error {{deleted function}}
49struct B2 { // expected-note {{here}}
50  B2();
51  InaccessibleDtor a;
52};
53B2 b2; // expected-error {{deleted function}}
54struct B3 { // expected-note {{here}}
55  B3();
56  DeletedDtor a[4];
57};
58B3 b3; // expected-error {{deleted function}}
59struct B4 { // expected-note {{here}}
60  B4();
61  InaccessibleDtor a[4];
62};
63B4 b4; // expected-error {{deleted function}}
64union B5 { // expected-note {{here}}
65  B5();
66  union {
67    DeletedDtor a;
68  };
69};
70B5 b5; // expected-error {{deleted function}}
71union B6 { // expected-note {{here}}
72  B6();
73  union {
74    InaccessibleDtor a;
75  };
76};
77B6 b6; // expected-error {{deleted function}}
78
79// -- any direct or virtual base class has a deleted or inaccessible destructor.
80struct C1 : DeletedDtor { C1(); } c1; // expected-error {{deleted function}} expected-note {{here}}
81struct C2 : InaccessibleDtor { C2(); } c2; // expected-error {{deleted function}} expected-note {{here}}
82struct C3 : virtual DeletedDtor { C3(); } c3; // expected-error {{deleted function}} expected-note {{here}}
83struct C4 : virtual InaccessibleDtor { C4(); } c4; // expected-error {{deleted function}} expected-note {{here}}
84
85// -- for a virtual destructor, lookup of the non-array deallocation function
86// results in an ambiguity or a function that is deleted or inaccessible.
87class D1 {
88  void operator delete(void*);
89public:
90  virtual ~D1() = default;
91} d1; // ok
92struct D2 : D1 { // expected-note {{deleted here}}
93  // implicitly-virtual destructor
94} d2; // expected-error {{deleted function}}
95struct D3 {
96  virtual ~D3() = default; // expected-note {{deleted here}}
97  void operator delete(void*, double = 0.0);
98  void operator delete(void*, char = 0);
99} d3; // expected-error {{deleted function}}
100struct D4 {
101  virtual ~D4() = default; // expected-note {{deleted here}}
102  void operator delete(void*) = delete;
103} d4; // expected-error {{deleted function}}
104