1// RUN: %clang_cc1 -fsyntax-only -verify %s
2// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
3// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
4
5struct X0 { // expected-note {{candidate constructor (the implicit copy constructor) not viable}}
6#if __cplusplus >= 201103L // C++11 or later
7// expected-note@-2 {{candidate constructor (the implicit move constructor) not viable}}
8#endif
9  X0(int); // expected-note{{candidate}}
10  template<typename T> X0(T); // expected-note {{candidate}}
11  template<typename T, typename U> X0(T*, U*); // expected-note {{candidate}}
12
13  // PR4761
14  template<typename T> X0() : f0(T::foo) {} // expected-note {{candidate}}
15  int f0;
16};
17
18void accept_X0(X0);
19
20void test_X0(int i, float f) {
21  X0 x0a(i);
22  X0 x0b(f);
23  X0 x0c = i;
24  X0 x0d = f;
25  accept_X0(i);
26  accept_X0(&i);
27  accept_X0(f);
28  accept_X0(&f);
29  X0 x0e(&i, &f);
30  X0 x0f(&f, &i);
31
32  X0 x0g(f, &i); // expected-error{{no matching constructor}}
33}
34
35template<typename T>
36struct X1 {
37  X1(const X1&);
38  template<typename U> X1(const X1<U>&);
39};
40
41template<typename T>
42struct Outer {
43  typedef X1<T> A;
44
45  A alloc;
46
47  explicit Outer(const A& a) : alloc(a) { }
48};
49
50void test_X1(X1<int> xi) {
51  Outer<int> oi(xi);
52  Outer<float> of(xi);
53}
54
55// PR4655
56template<class C> struct A {};
57template <> struct A<int>{A(const A<int>&);};
58struct B { A<int> x; B(B& a) : x(a.x) {} };
59
60struct X2 {
61  X2(); // expected-note{{candidate constructor}}
62  X2(X2&);	// expected-note {{candidate constructor}}
63  template<typename T> X2(T); // expected-note {{candidate template ignored: instantiation would take its own class type by value}}
64};
65
66X2 test(bool Cond, X2 x2) {
67  if (Cond)
68    return x2; // okay, uses copy constructor
69
70  return X2(); // expected-error{{no matching constructor}}
71}
72
73struct X3 {
74  template<typename T> X3(T);
75};
76
77template<> X3::X3(X3); // expected-error{{must pass its first argument by reference}}
78
79struct X4 {
80  X4();
81  ~X4();
82  X4(X4&);
83  template<typename T> X4(const T&, int = 17);
84};
85
86X4 test_X4(bool Cond, X4 x4) {
87  X4 a(x4, 17); // okay, constructor template
88  X4 b(x4); // okay, copy constructor
89  return X4();
90}
91
92// Instantiation of a non-dependent use of a constructor
93struct DefaultCtorHasDefaultArg {
94  explicit DefaultCtorHasDefaultArg(int i = 17);
95};
96
97template<typename T>
98void default_ctor_inst() {
99  DefaultCtorHasDefaultArg def;
100}
101
102template void default_ctor_inst<int>();
103
104template<typename T>
105struct X5 {
106  X5();
107  X5(const T &);
108};
109
110struct X6 {
111  template<typename T> X6(T);
112};
113
114void test_X5_X6() {
115  X5<X6> tf;
116  X5<X6> tf2(tf);
117}
118
119namespace PR8182 {
120  struct foo {
121    foo();
122    template<class T> foo(T&);
123
124  private:
125    foo(const foo&);
126  };
127
128  void test_foo() {
129    foo f1;
130    foo f2(f1);
131    foo f3 = f1;
132  }
133
134}
135
136// Don't blow out the stack trying to call an illegal constructor
137// instantiation.  We intentionally allow implicit instantiations to
138// exist, so make sure they're unusable.
139//
140// rdar://19199836
141namespace self_by_value {
142  template <class T, class U> struct A {
143    A() {}
144    A(const A<T,U> &o) {}
145    A(A<T,T> o) {}
146  };
147
148  void helper(A<int,float>);
149
150  void test1(A<int,int> a) {
151    helper(a);
152  }
153  void test2() {
154    helper(A<int,int>());
155  }
156}
157
158namespace self_by_value_2 {
159  template <class T, class U> struct A {
160    A() {} // expected-note {{not viable: requires 0 arguments}}
161    A(A<T,U> &o) {} // expected-note {{not viable: expects an l-value}}
162    A(A<T,T> o) {} // expected-note {{ignored: instantiation takes its own class type by value}}
163  };
164
165  void helper_A(A<int,int>); // expected-note {{passing argument to parameter here}}
166  void test_A() {
167    helper_A(A<int,int>()); // expected-error {{no matching constructor}}
168  }
169}
170
171namespace self_by_value_3 {
172  template <class T, class U> struct A {
173    A() {}
174    A(A<T,U> &o) {}
175    A(A<T,T> o) {}
176  };
177
178  void helper_A(A<int,int>);
179  void test_A(A<int,int> b) {
180    helper_A(b);
181  }
182}
183