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
|
// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=debug.DumpCFG -analyzer-config cfg-rich-constructors=false %s 2>&1 | FileCheck -check-prefixes=CHECK,WARNINGS %s
// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=debug.DumpCFG -analyzer-config cfg-rich-constructors=true %s 2>&1 | FileCheck -check-prefixes=CHECK,ANALYZER %s
// This file tests how we construct two different flavors of the Clang CFG -
// the CFG used by the Sema analysis-based warnings and the CFG used by the
// static analyzer. The difference in the behavior is checked via FileCheck
// prefixes (WARNINGS and ANALYZER respectively). When introducing new analyzer
// flags, no new run lines should be added - just these flags would go to the
// respective line depending on where is it turned on and where is it turned
// off. Feel free to add tests that test only one of the CFG flavors if you're
// not sure how the other flavor is supposed to work in your case.
class A {
public:
// CHECK: A()
// CHECK: [B1 (ENTRY)]
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
A() {}
// CHECK: A(int i)
// CHECK: [B1 (ENTRY)]
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
A(int i) {}
};
class B : public virtual A {
public:
// CHECK: B()
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// WARNINGS-NEXT: 1: (CXXConstructExpr, class A)
// ANALYZER-NEXT: 1: (CXXConstructExpr, A() (Base initializer), class A)
// CHECK-NEXT: 2: A([B1.1]) (Base initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
B() {}
// CHECK: B(int i)
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: i
// CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, LValueToRValue, int)
// WARNINGS-NEXT: 3: [B1.2] (CXXConstructExpr, class A)
// ANALYZER-NEXT: 3: [B1.2] (CXXConstructExpr, A([B1.2]) (Base initializer), class A)
// CHECK-NEXT: 4: A([B1.3]) (Base initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
B(int i) : A(i) {}
};
class C : public virtual A {
public:
// CHECK: C()
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// WARNINGS-NEXT: 1: (CXXConstructExpr, class A)
// ANALYZER-NEXT: 1: (CXXConstructExpr, A() (Base initializer), class A)
// CHECK-NEXT: 2: A([B1.1]) (Base initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
C() {}
// CHECK: C(int i)
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: i
// CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, LValueToRValue, int)
// WARNINGS-NEXT: 3: [B1.2] (CXXConstructExpr, class A)
// ANALYZER-NEXT: 3: [B1.2] (CXXConstructExpr, A([B1.2]) (Base initializer), class A)
// CHECK-NEXT: 4: A([B1.3]) (Base initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
C(int i) : A(i) {}
};
class TestOrder : public C, public B, public A {
int i;
int& r;
public:
TestOrder();
};
// CHECK: TestOrder::TestOrder()
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// WARNINGS-NEXT: 1: (CXXConstructExpr, class A)
// ANALYZER-NEXT: 1: (CXXConstructExpr, A() (Base initializer), class A)
// CHECK-NEXT: 2: A([B1.1]) (Base initializer)
// WARNINGS-NEXT: 3: (CXXConstructExpr, class C)
// ANALYZER-NEXT: 3: (CXXConstructExpr, C() (Base initializer), class C)
// CHECK-NEXT: 4: C([B1.3]) (Base initializer)
// WARNINGS-NEXT: 5: (CXXConstructExpr, class B)
// ANALYZER-NEXT: 5: (CXXConstructExpr, B() (Base initializer), class B)
// CHECK-NEXT: 6: B([B1.5]) (Base initializer)
// WARNINGS-NEXT: 7: (CXXConstructExpr, class A)
// ANALYZER-NEXT: 7: (CXXConstructExpr, A() (Base initializer), class A)
// CHECK-NEXT: 8: A([B1.7]) (Base initializer)
// CHECK-NEXT: 9: /*implicit*/(int)0
// CHECK-NEXT: 10: i([B1.9]) (Member initializer)
// CHECK-NEXT: 11: this
// CHECK-NEXT: 12: [B1.11]->i
// CHECK-NEXT: 13: r([B1.12]) (Member initializer)
// WARNINGS-NEXT: 14: (CXXConstructExpr, class A)
// ANALYZER-NEXT: 14: (CXXConstructExpr, [B1.15], class A)
// CHECK-NEXT: 15: A a;
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
TestOrder::TestOrder()
: r(i), B(), i(), C() {
A a;
}
class TestControlFlow {
int x, y, z;
public:
TestControlFlow(bool b);
};
// CHECK: TestControlFlow::TestControlFlow(bool b)
// CHECK: [B5 (ENTRY)]
// CHECK-NEXT: Succs (1): B4
// CHECK: [B1]
// CHECK-NEXT: 1: [B4.4] ? [B2.1] : [B3.1]
// CHECK-NEXT: 2: y([B1.1]) (Member initializer)
// CHECK-NEXT: 3: this
// CHECK-NEXT: 4: [B1.3]->y
// CHECK-NEXT: 5: [B1.4] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: 6: z([B1.5]) (Member initializer)
// CHECK-NEXT: 7: int v;
// CHECK-NEXT: Preds (2): B2 B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: 0
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: 1: 1
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B4]
// CHECK-NEXT: 1: 0
// CHECK-NEXT: 2: x([B4.1]) (Member initializer)
// CHECK-NEXT: 3: b
// CHECK-NEXT: 4: [B4.3] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: [B4.4] ? ... : ...
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (2): B2 B3
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
TestControlFlow::TestControlFlow(bool b)
: y(b ? 0 : 1)
, x(0)
, z(y) {
int v;
}
class TestDelegating {
int x, z;
public:
// CHECK: TestDelegating()
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: 2
// CHECK-NEXT: 2: 3
// WARNINGS-NEXT: 3: [B1.1], [B1.2] (CXXConstructExpr, class TestDelegating)
// ANALYZER-NEXT: 3: [B1.1], [B1.2] (CXXConstructExpr, TestDelegating([B1.1], [B1.2]) (Delegating initializer), class TestDelegating)
// CHECK-NEXT: 4: TestDelegating([B1.3]) (Delegating initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
TestDelegating() : TestDelegating(2, 3) {}
// CHECK: TestDelegating(int x, int z)
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: x
// CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: 3: x([B1.2]) (Member initializer)
// CHECK-NEXT: 4: z
// CHECK-NEXT: 5: [B1.4] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: 6: z([B1.5]) (Member initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
TestDelegating(int x, int z) : x(x), z(z) {}
};
|
