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
191
192
193
194
195
196
197
198
199
| // RUN: %clang_cc1 -fsyntax-only -Wmismatched-tags -verify %s
// RUN: not %clang_cc1 -fsyntax-only -Wmismatched-tags %s 2>&1 | FileCheck %s
class X; // expected-note 2{{here}}
typedef struct X * X_t; // expected-warning{{previously declared}}
union X { int x; float y; }; // expected-error{{use of 'X' with tag type that does not match previous declaration}}
template<typename T> struct Y; // expected-note{{did you mean class here?}}
template<class U> class Y { }; // expected-warning{{previously declared}}
template <typename>
struct Z {
struct Z { // expected-error{{member 'Z' has the same name as its class}}
};
};
class A;
class A; // expected-note{{previous use is here}}
struct A; // expected-warning{{struct 'A' was previously declared as a class}}
class B; // expected-note{{did you mean struct here?}}
class B; // expected-note{{previous use is here}}\
// expected-note{{did you mean struct here?}}
struct B; // expected-warning{{struct 'B' was previously declared as a class}}
struct B {}; // expected-warning{{'B' defined as a struct here but previously declared as a class}}
class C; // expected-note{{previous use is here}}
struct C; // expected-warning{{struct 'C' was previously declared as a class}}\
// expected-note{{previous use is here}}\
// expected-note{{did you mean class here?}}
class C; // expected-warning{{class 'C' was previously declared as a struct}}\
// expected-note{{previous use is here}}
struct C; // expected-warning{{struct 'C' was previously declared as a class}}\
// expected-note{{did you mean class here?}}
class C {}; // expected-warning{{'C' defined as a class here but previously declared as a struct}}
struct D {}; // expected-note{{previous definition is here}}\
// expected-note{{previous use is here}}
class D {}; // expected-error{{redefinition of 'D'}}
struct D;
class D; // expected-warning{{class 'D' was previously declared as a struct}}\
// expected-note{{did you mean struct here?}}
class E;
class E;
class E {};
class E;
struct F;
struct F;
struct F {}; // expected-note {{previous use}}
struct F;
class F; // expected-warning {{previously declared as a struct}} expected-note {{did you mean struct}}
template<class U> class G; // expected-note{{previous use is here}}\
// expected-note{{did you mean struct here?}}
template<class U> struct G; // expected-warning{{struct template 'G' was previously declared as a class template}}
template<class U> struct G {}; // expected-warning{{'G' defined as a struct template here but previously declared as a class template}}
// Declarations from contexts where the warning is disabled are entirely
// ignored for the purpose of this warning.
struct J;
struct K; // expected-note {{previous use}}
struct L;
struct M; // expected-note {{previous use}}
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmismatched-tags"
struct H;
class I {};
class J;
class K;
class L;
class M {};
#pragma clang diagnostic pop
class H; // expected-note {{previous use}}
struct H; // expected-warning {{previously declared as a class}}
struct I; // expected-note {{previous use}}
class I; // expected-warning {{previously declared as a struct}}
struct J;
class K; // expected-warning {{previously declared as a struct}}
struct L;
class M; // expected-warning {{previously declared as a struct}}
/*
*** 'X' messages ***
CHECK: warning: struct 'X' was previously declared as a class
CHECK: {{^}}typedef struct X * X_t;
CHECK: {{^}} ^{{$}}
CHECK: note: previous use is here
CHECK: {{^}}class X;
CHECK: {{^}} ^{{$}}
CHECK: error: use of 'X' with tag type that does not match previous declaration
CHECK: {{^}}union X { int x; float y; };
CHECK: {{^}}^~~~~{{$}}
CHECK: {{^}}class{{$}}
CHECK: note: previous use is here
CHECK: {{^}}class X;
CHECK: {{^}} ^{{$}}
*** 'Y' messages ***
CHECK: warning: 'Y' defined as a class template here but
previously declared as a struct template
CHECK: {{^}}template<class U> class Y { };
CHECK: {{^}} ^{{$}}
CHECK: note: did you mean class here?
CHECK: {{^}}template<typename T> struct Y;
CHECK: {{^}} ^~~~~~{{$}}
CHECK: {{^}} class{{$}}
*** 'A' messages ***
CHECK: warning: struct 'A' was previously declared as a class
CHECK: {{^}}struct A;
CHECK: {{^}}^{{$}}
CHECK: note: previous use is here
CHECK: {{^}}class A;
CHECK: {{^}} ^{{$}}
*** 'B' messages ***
CHECK: warning: struct 'B' was previously declared as a class
CHECK: {{^}}struct B;
CHECK: {{^}}^{{$}}
CHECK: note: previous use is here
CHECK: {{^}}class B;
CHECK: {{^}} ^{{$}}
CHECK: 'B' defined as a struct here but previously declared as a class
CHECK: {{^}}struct B {};
CHECK: {{^}}^{{$}}
CHECK: note: did you mean struct here?
CHECK: {{^}}class B;
CHECK: {{^}}^~~~~{{$}}
CHECK: {{^}}struct{{$}}
CHECK: note: did you mean struct here?
CHECK: {{^}}class B;
CHECK: {{^}}^~~~~{{$}}
CHECK: {{^}}struct{{$}}
*** 'C' messages ***
CHECK: warning: struct 'C' was previously declared as a class
CHECK: {{^}}struct C;
CHECK: {{^}}^{{$}}
CHECK: note: previous use is here
CHECK: {{^}}class C;
CHECK: {{^}} ^{{$}}
CHECK: warning: class 'C' was previously declared as a struct
CHECK: {{^}}class C;
CHECK: {{^}}^{{$}}
CHECK: note: previous use is here
CHECK: {{^}}struct C;
CHECK: {{^}} ^{{$}}
CHECK: warning: struct 'C' was previously declared as a class
CHECK: {{^}}struct C;
CHECK: {{^}}^{{$}}
CHECK: note: previous use is here
CHECK: {{^}}class C;
CHECK: {{^}} ^{{$}}
CHECK: warning: 'C' defined as a class here but previously declared as a struct
CHECK: {{^}}class C {};
CHECK: {{^}}^{{$}}
CHECK: note: did you mean class here?
CHECK: {{^}}struct C;
CHECK: {{^}}^~~~~~{{$}}
CHECK: {{^}}class{{$}}
CHECK: note: did you mean class here?
CHECK: {{^}}struct C;
CHECK: {{^}}^~~~~~{{$}}
CHECK: {{^}}class{{$}}
*** 'D' messages ***
CHECK: error: redefinition of 'D'
CHECK: {{^}}class D {};
CHECK: {{^}} ^{{$}}
CHECK: note: previous definition is here
CHECK: {{^}}struct D {};
CHECK: {{^}} ^{{$}}
CHECK: warning: class 'D' was previously declared as a struct
CHECK: {{^}}class D;
CHECK: {{^}}^{{$}}
CHECK: note: previous use is here
CHECK: {{^}}struct D {};
CHECK: {{^}} ^{{$}}
CHECK: note: did you mean struct here?
CHECK: {{^}}class D;
CHECK: {{^}}^~~~~{{$}}
CHECK: {{^}}struct{{$}}
*** 'E' messages ***
*** 'F' messages ***
*** 'G' messages ***
CHECK: warning: struct template 'G' was previously declared as a class template
CHECK: {{^}}template<class U> struct G;
CHECK: {{^}} ^{{$}}
CHECK: note: previous use is here
CHECK: {{^}}template<class U> class G;
CHECK: {{^}} ^{{$}}
CHECK: warning: 'G' defined as a struct template here but previously declared as a class template
CHECK: {{^}}template<class U> struct G {};
CHECK: {{^}} ^{{$}}
CHECK: note: did you mean struct here?
CHECK: {{^}}template<class U> class G;
CHECK: {{^}} ^~~~~
CHECK: {{^}} struct
*/
|