1 | // RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -verify -analyzer-config eagerly-assume=false %s |
2 | |
3 | void clang_analyzer_eval(bool); |
4 | |
5 | struct A { |
6 | int x; |
7 | void foo() const; |
8 | void bar(); |
9 | |
10 | void testImplicitThisSyntax() { |
11 | x = 3; |
12 | foo(); |
13 | clang_analyzer_eval(x == 3); // expected-warning{{TRUE}} |
14 | bar(); |
15 | clang_analyzer_eval(x == 3); // expected-warning{{UNKNOWN}} |
16 | } |
17 | }; |
18 | |
19 | struct B { |
20 | mutable int mut; |
21 | void foo() const; |
22 | }; |
23 | |
24 | struct C { |
25 | int *p; |
26 | void foo() const; |
27 | }; |
28 | |
29 | struct MutBase { |
30 | mutable int b_mut; |
31 | }; |
32 | |
33 | struct MutDerived : MutBase { |
34 | void foo() const; |
35 | }; |
36 | |
37 | struct PBase { |
38 | int *p; |
39 | }; |
40 | |
41 | struct PDerived : PBase { |
42 | void foo() const; |
43 | }; |
44 | |
45 | struct Inner { |
46 | int x; |
47 | int *p; |
48 | void bar() const; |
49 | }; |
50 | |
51 | struct Outer { |
52 | int x; |
53 | Inner in; |
54 | void foo() const; |
55 | }; |
56 | |
57 | void checkThatConstMethodWithoutDefinitionDoesNotInvalidateObject() { |
58 | A t; |
59 | t.x = 3; |
60 | t.foo(); |
61 | clang_analyzer_eval(t.x == 3); // expected-warning{{TRUE}} |
62 | // Test non-const does invalidate |
63 | t.bar(); |
64 | clang_analyzer_eval(t.x); // expected-warning{{UNKNOWN}} |
65 | } |
66 | |
67 | void checkThatConstMethodDoesInvalidateMutableFields() { |
68 | B t; |
69 | t.mut = 4; |
70 | t.foo(); |
71 | clang_analyzer_eval(t.mut); // expected-warning{{UNKNOWN}} |
72 | } |
73 | |
74 | void checkThatConstMethodDoesInvalidatePointedAtMemory() { |
75 | int x = 1; |
76 | C t; |
77 | t.p = &x; |
78 | t.foo(); |
79 | clang_analyzer_eval(x); // expected-warning{{UNKNOWN}} |
80 | clang_analyzer_eval(t.p == &x); // expected-warning{{TRUE}} |
81 | } |
82 | |
83 | void checkThatConstMethodDoesInvalidateInheritedMutableFields() { |
84 | MutDerived t; |
85 | t.b_mut = 4; |
86 | t.foo(); |
87 | clang_analyzer_eval(t.b_mut); // expected-warning{{UNKNOWN}} |
88 | } |
89 | |
90 | void checkThatConstMethodDoesInvalidateInheritedPointedAtMemory() { |
91 | int x = 1; |
92 | PDerived t; |
93 | t.p = &x; |
94 | t.foo(); |
95 | clang_analyzer_eval(x); // expected-warning{{UNKNOWN}} |
96 | clang_analyzer_eval(t.p == &x); // expected-warning{{TRUE}} |
97 | } |
98 | |
99 | void checkThatConstMethodDoesInvalidateContainedPointedAtMemory() { |
100 | int x = 1; |
101 | Outer t; |
102 | t.x = 2; |
103 | t.in.p = &x; |
104 | t.foo(); |
105 | clang_analyzer_eval(x); // expected-warning{{UNKNOWN}} |
106 | clang_analyzer_eval(t.x == 2); // expected-warning{{TRUE}} |
107 | clang_analyzer_eval(t.in.p == &x); // expected-warning{{TRUE}} |
108 | } |
109 | |
110 | void checkThatContainedConstMethodDoesNotInvalidateObjects() { |
111 | Outer t; |
112 | t.x = 1; |
113 | t.in.x = 2; |
114 | t.in.bar(); |
115 | clang_analyzer_eval(t.x == 1); // expected-warning{{TRUE}} |
116 | clang_analyzer_eval(t.in.x == 2); // expected-warning{{TRUE}} |
117 | } |
118 | |
119 | void checkPointerTypedThisExpression(A *a) { |
120 | a->x = 3; |
121 | a->foo(); |
122 | clang_analyzer_eval(a->x == 3); // expected-warning{{TRUE}} |
123 | a->bar(); |
124 | clang_analyzer_eval(a->x == 3); // expected-warning{{UNKNOWN}} |
125 | } |
126 | |
127 | void checkReferenceTypedThisExpression(A &a) { |
128 | a.x = 3; |
129 | a.foo(); |
130 | clang_analyzer_eval(a.x == 3); // expected-warning{{TRUE}} |
131 | a.bar(); |
132 | clang_analyzer_eval(a.x == 3); // expected-warning{{UNKNOWN}} |
133 | } |
134 | |
135 | // --- Versions of the above tests where the const method is inherited --- // |
136 | |
137 | struct B1 { |
138 | void foo() const; |
139 | }; |
140 | |
141 | struct D1 : public B1 { |
142 | int x; |
143 | }; |
144 | |
145 | struct D2 : public B1 { |
146 | mutable int mut; |
147 | }; |
148 | |
149 | struct D3 : public B1 { |
150 | int *p; |
151 | }; |
152 | |
153 | struct DInner : public B1 { |
154 | int x; |
155 | int *p; |
156 | }; |
157 | |
158 | struct DOuter : public B1 { |
159 | int x; |
160 | DInner in; |
161 | }; |
162 | |
163 | void checkThatInheritedConstMethodDoesNotInvalidateObject() { |
164 | D1 t; |
165 | t.x = 1; |
166 | t.foo(); |
167 | clang_analyzer_eval(t.x == 1); // expected-warning{{TRUE}} |
168 | } |
169 | |
170 | void checkThatInheritedConstMethodDoesInvalidateMutableFields() { |
171 | D2 t; |
172 | t.mut = 1; |
173 | t.foo(); |
174 | clang_analyzer_eval(t.mut); // expected-warning{{UNKNOWN}} |
175 | } |
176 | |
177 | void checkThatInheritedConstMethodDoesInvalidatePointedAtMemory() { |
178 | int x = 1; |
179 | D3 t; |
180 | t.p = &x; |
181 | t.foo(); |
182 | clang_analyzer_eval(x); // expected-warning{{UNKNOWN}} |
183 | clang_analyzer_eval(t.p == &x); // expected-warning{{TRUE}} |
184 | } |
185 | |
186 | void checkThatInheritedConstMethodDoesInvalidateContainedPointedAtMemory() { |
187 | int x = 1; |
188 | DOuter t; |
189 | t.x = 2; |
190 | t.in.x = 3; |
191 | t.in.p = &x; |
192 | t.foo(); |
193 | clang_analyzer_eval(x); // expected-warning{{UNKNOWN}} |
194 | clang_analyzer_eval(t.x == 2); // expected-warning{{TRUE}} |
195 | clang_analyzer_eval(t.in.x == 3); // expected-warning{{TRUE}} |
196 | clang_analyzer_eval(t.in.p == &x); // expected-warning{{TRUE}} |
197 | } |
198 | |
199 | void checkThatInheritedContainedConstMethodDoesNotInvalidateObjects() { |
200 | DOuter t; |
201 | t.x = 1; |
202 | t.in.x = 2; |
203 | t.in.foo(); |
204 | clang_analyzer_eval(t.x == 1); // expected-warning{{TRUE}} |
205 | clang_analyzer_eval(t.in.x == 2); // expected-warning{{TRUE}} |
206 | } |
207 | |
208 | // --- PR21606 --- // |
209 | |
210 | struct s1 { |
211 | void g(const int *i) const; |
212 | }; |
213 | |
214 | struct s2 { |
215 | void f(int *i) { |
216 | m_i = i; |
217 | m_s.g(m_i); |
218 | if (m_i) |
219 | *i = 42; // no-warning |
220 | } |
221 | |
222 | int *m_i; |
223 | s1 m_s; |
224 | }; |
225 | |
226 | void PR21606() |
227 | { |
228 | s2().f(0); |
229 | } |
230 | |
231 | // --- PR25392 --- // |
232 | |
233 | struct HasConstMemberFunction { |
234 | public: |
235 | void constMemberFunction() const; |
236 | }; |
237 | |
238 | HasConstMemberFunction hasNoReturn() { } // expected-warning {{control reaches end of non-void function}} |
239 | |
240 | void testUnknownWithConstMemberFunction() { |
241 | hasNoReturn().constMemberFunction(); |
242 | } |
243 | |
244 | void testNonRegionLocWithConstMemberFunction() { |
245 | (*((HasConstMemberFunction *)(&&label))).constMemberFunction(); |
246 | |
247 | label: return; |
248 | } |
249 | |
250 | // FIXME |
251 | // When there is a circular reference to an object and a const method is called |
252 | // the object is not invalidated because TK_PreserveContents has already been |
253 | // set. |
254 | struct Outer2; |
255 | |
256 | struct InnerWithRef { |
257 | Outer2 *ref; |
258 | }; |
259 | |
260 | struct Outer2 { |
261 | int x; |
262 | InnerWithRef in; |
263 | void foo() const; |
264 | }; |
265 | |
266 | void checkThatConstMethodCallDoesInvalidateObjectForCircularReferences() { |
267 | Outer2 t; |
268 | t.x = 1; |
269 | t.in.ref = &t; |
270 | t.foo(); |
271 | // FIXME: Should be UNKNOWN. |
272 | clang_analyzer_eval(t.x); // expected-warning{{TRUE}} |
273 | } |
274 | |