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
|
// RUN: %clang_cc1 -fsyntax-only -verify -fblocks %s -Wno-unreachable-code
// RUN: %clang_cc1 -fsyntax-only -verify -fblocks -std=gnu++11 %s -Wno-unreachable-code
namespace test0 {
struct D { ~D(); };
int f(bool b) {
if (b) {
D d;
goto end;
}
end:
return 1;
}
}
namespace test1 {
struct C { C(); };
int f(bool b) {
if (b)
goto foo; // expected-error {{goto into protected scope}}
C c; // expected-note {{jump bypasses variable initialization}}
foo:
return 1;
}
}
namespace test2 {
struct C { C(); };
int f(void **ip) {
static void *ips[] = { &&lbl1, &&lbl2 };
C c;
goto *ip;
lbl1:
return 0;
lbl2:
return 1;
}
}
namespace test3 {
struct C { C(); };
int f(void **ip) {
static void *ips[] = { &&lbl1, &&lbl2 };
goto *ip;
lbl1: {
C c;
return 0;
}
lbl2:
return 1;
}
}
namespace test4 {
struct C { C(); };
struct D { ~D(); };
int f(void **ip) {
static void *ips[] = { &&lbl1, &&lbl2 };
C c0;
goto *ip; // expected-error {{indirect goto might cross protected scopes}}
C c1; // expected-note {{jump bypasses variable initialization}}
lbl1: // expected-note {{possible target of indirect goto}}
return 0;
lbl2:
return 1;
}
}
namespace test5 {
struct C { C(); };
struct D { ~D(); };
int f(void **ip) {
static void *ips[] = { &&lbl1, &&lbl2 };
C c0;
goto *ip;
lbl1: // expected-note {{possible target of indirect goto}}
return 0;
lbl2:
if (ip[1]) {
D d; // expected-note {{jump exits scope of variable with non-trivial destructor}}
ip += 2;
goto *ip; // expected-error {{indirect goto might cross protected scopes}}
}
return 1;
}
}
namespace test6 {
struct C { C(); };
unsigned f(unsigned s0, unsigned s1, void **ip) {
static void *ips[] = { &&lbl1, &&lbl2, &&lbl3, &&lbl4 };
C c0;
goto *ip;
lbl1:
s0++;
goto *++ip;
lbl2:
s0 -= s1;
goto *++ip;
lbl3: {
unsigned tmp = s0;
s0 = s1;
s1 = tmp;
goto *++ip;
}
lbl4:
return s0;
}
}
// C++0x says it's okay to skip non-trivial initializers on static
// locals, and we implement that in '03 as well.
namespace test7 {
struct C { C(); };
void test() {
goto foo;
static C c;
foo:
return;
}
}
// PR7789
namespace test8 {
void test1(int c) {
switch (c) {
case 0:
int x = 56; // expected-note {{jump bypasses variable initialization}}
case 1: // expected-error {{switch case is in protected scope}}
x = 10;
}
}
void test2() {
goto l2; // expected-error {{goto into protected scope}}
l1: int x = 5; // expected-note {{jump bypasses variable initialization}}
l2: x++;
}
}
namespace test9 {
struct S { int i; };
void test1() {
goto foo;
S s;
foo:
return;
}
unsigned test2(unsigned x, unsigned y) {
switch (x) {
case 2:
S s;
if (y > 42) return x + y;
default:
return x - 2;
}
}
}
// http://llvm.org/PR10462
namespace PR10462 {
enum MyEnum {
something_valid,
something_invalid
};
bool recurse() {
MyEnum K;
switch (K) { // expected-warning {{enumeration value 'something_invalid' not handled in switch}}
case something_valid:
case what_am_i_thinking: // expected-error {{use of undeclared identifier}}
int *X = 0;
if (recurse()) {
}
break;
}
}
namespace test10 {
int test() {
static void *ps[] = { &&a0 };
goto *&&a0; // expected-error {{goto into protected scope}}
int a = 3; // expected-note {{jump bypasses variable initialization}}
a0:
return 0;
}
}
}
|
