1// RUN: %clang_cc1 -std=c++11 -verify -fsyntax-only %s
2// RUN: %clang_cc1 -std=c++1y %s -verify -DCXX1Y
3
4// Explicit member declarations behave as in C++11.
5
6namespace n3323_example {
7
8  template <class T> class zero_init {
9  public:
10    zero_init() : val(static_cast<T>(0)) {}
11    zero_init(T val) : val(val) {}
12
13    operator T &() { return val; }     //@13
14    operator T() const { return val; } //@14
15
16  private:
17    T val;
18  };
19
20  void Delete() {
21    zero_init<int *> p;
22    p = new int(7);
23    delete p; //@23
24    delete (p + 0);
25    delete + p;
26  }
27
28  void Switch() {
29    zero_init<int> i;
30    i = 7;
31    switch (i) {} // @31
32    switch (i + 0) {}
33    switch (+i) {}
34  }
35}
36
37#ifdef CXX1Y
38#else
39//expected-error@23 {{ambiguous conversion of delete expression of type 'zero_init<int *>' to a pointer}}
40//expected-note@13 {{conversion to pointer type 'int *'}}
41//expected-note@14 {{conversion to pointer type 'int *'}}
42//expected-error@31 {{multiple conversions from switch condition type 'zero_init<int>' to an integral or enumeration type}}
43//expected-note@13 {{conversion to integral type 'int'}}
44//expected-note@14 {{conversion to integral type 'int'}}
45#endif
46
47namespace extended_examples {
48
49  struct A0 {
50    operator int();      // matching and viable
51  };
52
53  struct A1 {
54    operator int() &&;   // matching and not viable
55  };
56
57  struct A2 {
58    operator float();    // not matching
59  };
60
61  struct A3 {
62    template<typename T> operator T();  // not matching (ambiguous anyway)
63  };
64
65  struct A4 {
66    template<typename T> operator int();  // not matching (ambiguous anyway)
67  };
68
69  struct B1 {
70    operator int() &&;  // @70
71    operator int();     // @71  -- duplicate declaration with different qualifier is not allowed
72  };
73
74  struct B2 {
75    operator int() &&;  // matching but not viable
76    operator float();   // not matching
77  };
78
79  void foo(A0 a0, A1 a1, A2 a2, A3 a3, A4 a4, B2 b2) {
80    switch (a0) {}
81    switch (a1) {}     // @81 -- fails for different reasons
82    switch (a2) {}     // @82
83    switch (a3) {}     // @83
84    switch (a4) {}     // @84
85    switch (b2) {}     // @85 -- fails for different reasons
86  }
87}
88
89//expected-error@71 {{cannot overload a member function without a ref-qualifier with a member function with ref-qualifier '&&'}}
90//expected-note@70 {{previous declaration is here}}
91//expected-error@82 {{statement requires expression of integer type ('extended_examples::A2' invalid)}}
92//expected-error@83 {{statement requires expression of integer type ('extended_examples::A3' invalid)}}
93//expected-error@84 {{statement requires expression of integer type ('extended_examples::A4' invalid)}}
94
95#ifdef CXX1Y
96//expected-error@81 {{statement requires expression of integer type ('extended_examples::A1' invalid)}}
97//expected-error@85 {{statement requires expression of integer type ('extended_examples::B2' invalid)}}
98#else
99//expected-error@81 {{cannot initialize object parameter of type 'extended_examples::A1' with an expression of type 'extended_examples::A1'}}
100//expected-error@85 {{cannot initialize object parameter of type 'extended_examples::B2' with an expression of type 'extended_examples::B2'}}
101#endif
102
103namespace extended_examples_cxx1y {
104
105  struct A1 {   // leads to viable match in C++1y, and no viable match in C++11
106    operator int() &&;                  // matching but not viable
107    template <typename T> operator T(); // In C++1y: matching and viable, since disambiguated by L.100
108  };
109
110  struct A2 {   // leads to ambiguity in C++1y, and no viable match in C++11
111    operator int() &&;                    // matching but not viable
112    template <typename T> operator int(); // In C++1y: matching but ambiguous (disambiguated by L.105).
113  };
114
115  struct B1 {    // leads to one viable match in both cases
116    operator int();                  // matching and viable
117    template <typename T> operator T(); // In C++1y: matching and viable, since disambiguated by L.110
118  };
119
120  struct B2 {    // leads to one viable match in both cases
121    operator int();                  // matching and viable
122    template <typename T> operator int(); // In C++1y: matching but ambiguous, since disambiguated by L.115
123  };
124
125  struct C {    // leads to no match in both cases
126    operator float();                  // not matching
127    template <typename T> operator T(); // In C++1y: not matching, nor viable.
128  };
129
130  struct D {   // leads to viable match in C++1y, and no viable match in C++11
131    operator int() &&;                  // matching but not viable
132    operator float();                   // not matching
133    template <typename T> operator T(); // In C++1y: matching and viable, since disambiguated by L.125
134  };
135
136
137  void foo(A1 a1, A2 a2, B1 b1, B2 b2, C c, D d) {
138    switch (a1) {} // @138 --  should presumably call templated conversion operator to convert to int.
139    switch (a2) {} // @139
140    switch (b1) {}
141    switch (b2) {}
142    switch (c) {}  // @142
143    switch (d) {}  // @143
144  }
145}
146
147//expected-error@142 {{statement requires expression of integer type ('extended_examples_cxx1y::C' invalid)}}
148
149#ifdef CXX1Y
150//expected-error@139 {{statement requires expression of integer type ('extended_examples_cxx1y::A2' invalid)}}
151#else
152//expected-error@138 {{cannot initialize object parameter of type 'extended_examples_cxx1y::A1' with an expression of type 'extended_examples_cxx1y::A1'}}
153//expected-error@139 {{cannot initialize object parameter of type 'extended_examples_cxx1y::A2' with an expression of type 'extended_examples_cxx1y::A2'}}
154//expected-error@143 {{cannot initialize object parameter of type 'extended_examples_cxx1y::D' with an expression of type 'extended_examples_cxx1y::D'}}
155#endif
156
157namespace extended_examples_array_bounds {
158
159  typedef decltype(sizeof(int)) size_t;
160
161  struct Foo {
162    operator size_t();   // @162
163    operator unsigned short();  // @163
164  };
165
166  void bar() {
167    Foo x;
168    int *p = new int[x];        // @168
169  }
170}
171
172#ifdef CXX1Y
173#else
174//expected-error@168 {{ambiguous conversion of array size expression of type 'extended_examples_array_bounds::Foo' to an integral or enumeration type}}
175//expected-note@162 {{conversion to integral type 'size_t'}}
176//expected-note@163 {{conversion to integral type 'unsigned short' declared here}}
177#endif
178