blob: a3a0178cd10b67d5ab1a918947c2845cf6b3fb93 (
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
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
// RUN: %clang_cc1 -fsyntax-only -verify %s
// <rdar://problem/7971948>
struct A {};
struct B {
void foo(int b) {
switch (a) { // expected-error{{use of undeclared identifier 'a'}}
default:
return;
}
switch (b) {
case 17 // expected-error{{expected ':' after 'case'}}
break;
default // expected-error{{expected ':' after 'default'}}
return;
}
}
void test2() {
enum X { Xa, Xb } x;
switch (x) { // expected-warning {{enumeration value 'Xb' not handled in switch}}
case Xa; // expected-error {{expected ':' after 'case'}}
break;
}
switch (x) {
default; // expected-error {{expected ':' after 'default'}}
break;
}
}
int test3(int i) {
switch (i) {
case 1: return 0;
2: return 1; // expected-error {{expected 'case' keyword before expression}}
default: return 5;
}
}
};
int test4(int i) {
switch (i)
1: return -1; // expected-error {{expected 'case' keyword before expression}}
return 0;
}
int test5(int i) {
switch (i) {
case 1: case 2: case 3: return 1;
{
4:5:6:7: return 2; // expected-error 4{{expected 'case' keyword before expression}}
}
default: return -1;
}
}
int test6(int i) {
switch (i) {
case 1:
case 4:
// This class provides extra single colon tokens. Make sure no
// errors are seen here.
class foo{
public:
protected:
private:
};
case 2:
5: // expected-error {{expected 'case' keyword before expression}}
default: return 1;
}
}
int test7(int i) {
switch (i) {
case false ? 1 : 2:
true ? 1 : 2: // expected-error {{expected 'case' keyword before expression}}
case 10:
14 ? 3 : 4; // expected-warning {{expression result unused}}
default:
return 1;
}
}
enum foo { A, B, C};
int test8( foo x ) {
switch (x) {
A: return 0; // FIXME: give a warning for unused labels that could also be
// a case expression.
default: return 1;
}
}
// Stress test to make sure Clang doesn't crash.
void test9(int x) { // expected-note {{'x' declared here}}
switch(x) {
case 1: return;
2: case; // expected-error {{expected 'case' keyword before expression}} \
expected-error {{expected expression}}
4:5:6: return; // expected-error 3{{expected 'case' keyword before expression}}
7: :x; // expected-error {{expected 'case' keyword before expression}} \
expected-error {{expected expression}}
8:: x; // expected-error {{expected ';' after expression}} \
expected-error {{no member named 'x' in the global namespace; did you mean simply 'x'?}} \
expected-warning 2 {{expression result unused}}
9:: :y; // expected-error {{expected ';' after expression}} \
expected-error {{expected unqualified-id}} \
expected-warning {{expression result unused}}
:; // expected-error {{expected expression}}
::; // expected-error {{expected unqualified-id}}
}
}
void test10(int x) {
switch (x) {
case 1: {
struct Inner {
void g(int y) {
2: y++; // expected-error {{expected ';' after expression}} \
// expected-warning {{expression result unused}}
}
};
break;
}
}
}
template<typename T>
struct test11 {
enum { E };
void f(int x) {
switch (x) {
E: break; // FIXME: give a 'case' fix-it for unused labels that
// could also be an expression an a case label.
E+1: break; // expected-error {{expected 'case' keyword before expression}}
}
}
};
void test12(int x) {
switch (x) {
0: // expected-error {{expected 'case' keyword before expression}}
while (x) {
1: // expected-error {{expected 'case' keyword before expression}}
for (;x;) {
2: // expected-error {{expected 'case' keyword before expression}}
if (x > 0) {
3: // expected-error {{expected 'case' keyword before expression}}
--x;
}
}
}
}
}
void missing_statement_case(int x) {
switch (x) {
case 1:
case 0: // expected-error {{label at end of compound statement: expected statement}}
}
}
void missing_statement_default(int x) {
switch (x) {
case 0:
default: // expected-error {{label at end of compound statement: expected statement}}
}
}
void pr19022_1() {
switch (int x) // expected-error {{variable declaration in condition must have an initializer}}
case v: ; // expected-error {{use of undeclared identifier 'v'}}
}
void pr19022_1a(int x) {
switch(x) {
case 1 // expected-error{{expected ':' after 'case'}} \
// expected-error{{label at end of compound statement: expected statement}}
}
}
void pr19022_1b(int x) {
switch(x) {
case v // expected-error{{use of undeclared identifier 'v'}} \
// expected-error{{expected ':' after 'case'}}
} // expected-error{{expected statement}}
}
void pr19022_2() {
switch (int x) // expected-error {{variable declaration in condition must have an initializer}}
case v1: case v2: ; // expected-error {{use of undeclared identifier 'v1'}} \
// expected-error {{use of undeclared identifier 'v2'}}
}
void pr19022_3(int x) {
switch (x)
case 1: case v2: ; // expected-error {{use of undeclared identifier 'v2'}}
}
int pr19022_4(int x) {
switch(x) {
case 1 // expected-error{{expected ':' after 'case'}} expected-note{{previous case defined here}}
case 1 : return x; // expected-error{{duplicate case value '1'}}
}
}
void pr19022_5(int x) {
switch(x) {
case 1: case // expected-error{{expected ':' after 'case'}} \
// expected-error{{expected statement}}
} // expected-error{{expected expression}}
}
namespace pr19022 {
int baz5() {}
bool bar0() {
switch (int foo0) //expected-error{{variable declaration in condition must have an initializer}}
case bar5: ; // expected-error{{use of undeclared identifier 'bar5'}}
}
}
namespace pr21841 {
void fn1() {
switch (0)
switch (0 // expected-note{{to match this '('}}
{ // expected-error{{expected ')'}}
}
} // expected-error{{expected statement}}
}
|
