summaryrefslogtreecommitdiffstats
path: root/test/SemaCXX/overloaded-builtin-operators.cpp
blob: fd0cbc6c8643602e97dfd292d9380fbfb0b2d0d7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
// RUN: clang-cc -fsyntax-only -verify %s 
struct yes;
struct no;

struct Short {
  operator short();
};

struct Long {
  operator long();
};

enum E1 { };
struct Enum1 {
  operator E1();
};

enum E2 { };
struct Enum2 {
  operator E2();
};


struct X { 
  void f();
};

typedef void (X::*pmf)();
struct Xpmf {
  operator pmf();
};

yes& islong(long);
yes& islong(unsigned long); // FIXME: shouldn't be needed
no& islong(int);

void f(Short s, Long l, Enum1 e1, Enum2 e2, Xpmf pmf) {
  // C++ [over.built]p8
  int i1 = +e1;
  int i2 = -e2;

  // C++  [over.built]p10:
  int i3 = ~s;
  bool b1 = !s;

  // C++ [over.built]p12
  (void)static_cast<yes&>(islong(s + l));
  (void)static_cast<no&>(islong(s + s));

  // C++ [over.built]p16
  (void)(pmf == &X::f);
  (void)(pmf == 0);
  
  // C++ [over.built]p17
  (void)static_cast<yes&>(islong(s % l));
  (void)static_cast<yes&>(islong(l << s));
  (void)static_cast<no&>(islong(s << l));
  (void)static_cast<yes&>(islong(e1 % l));
  // FIXME: should pass (void)static_cast<no&>(islong(e1 % e2));
}

struct ShortRef { // expected-note{{candidate function}}
  operator short&();
};

struct LongRef {
  operator volatile long&();
};

struct XpmfRef { // expected-note{{candidate function}}
  operator pmf&();
};

struct E2Ref {
  operator E2&();
};

void g(ShortRef sr, LongRef lr, E2Ref e2_ref, XpmfRef pmf_ref) {
  // C++ [over.built]p3
  short s1 = sr++;

  // C++ [over.built]p3
  long l1 = lr--;

  // C++ [over.built]p18
  short& sr1 = (sr *= lr);
  volatile long& lr1 = (lr *= sr);

  // C++ [over.built]p20:
  E2 e2r2;
  e2r2 = e2_ref;
  
  pmf &pmr = (pmf_ref = &X::f); // expected-error{{no viable overloaded '='}}
  pmf pmr2;
  pmr2 = pmf_ref;
               
  // C++ [over.built]p22
  short& sr2 = (sr %= lr);
  volatile long& lr2 = (lr <<= sr);

  bool b1 = (sr && lr) || (sr || lr);
}

struct VolatileIntPtr {
  operator int volatile *();
};

struct ConstIntPtr {
  operator int const *();
};

struct VolatileIntPtrRef {
  operator int volatile *&();
};

struct ConstIntPtrRef {
  operator int const *&();
};

void test_with_ptrs(VolatileIntPtr vip, ConstIntPtr cip, ShortRef sr,
                    VolatileIntPtrRef vipr, ConstIntPtrRef cipr) {
  const int& cir1 = cip[sr];
  const int& cir2 = sr[cip];
  volatile int& vir1 = vip[sr];
  volatile int& vir2 = sr[vip];
  bool b1 = (vip == cip);
  long p1 = vip - cip;

  // C++ [over.built]p5:
  int volatile *vip1 = vipr++;
  int const *cip1 = cipr++;
  int volatile *&vipr1 = ++vipr;
  int const *&cipr1 = --cipr;

  // C++ [over.built]p6:
  int volatile &ivr = *vip;

  // C++ [over.built]p8:
  int volatile *vip2 = +vip;
  int i1 = +sr;
  int i2 = -sr;

  // C++ [over.built]p13:
  int volatile &ivr2 = vip[17];
  int const &icr2 = 17[cip];
}

// C++ [over.match.open]p4

void test_assign_restrictions(ShortRef& sr) {
  sr = (short)0; // expected-error{{no viable overloaded '='}}
}

struct Base { };
struct Derived1 : Base { };
struct Derived2 : Base { };

template<typename T>
struct ConvertibleToPtrOf {
  operator T*();
};

bool test_with_base_ptrs(ConvertibleToPtrOf<Derived1> d1, 
                         ConvertibleToPtrOf<Derived2> d2) {
  return d1 == d2; // expected-error{{invalid operands}}
}

// DR425
struct A {
  template< typename T > operator T() const;
};

void test_dr425(A a) {
  // FIXME: lots of candidates here!
  (void)(1.0f * a); // expected-error{{ambiguous}} \
                    // expected-note 81{{candidate}}
}

// pr5432
enum e {X};

const int a[][2] = {{1}};

int test_pr5432() {
  return a[X][X];
}

void f() {
  (void)__extension__(A());
}