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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 | // RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -verify %s void clang_analyzer_eval(bool); struct A { int x; void foo() const; void bar(); void testImplicitThisSyntax() { x = 3; foo(); clang_analyzer_eval(x == 3); // expected-warning{{TRUE}} bar(); clang_analyzer_eval(x == 3); // expected-warning{{UNKNOWN}} } }; struct B { mutable int mut; void foo() const; }; struct C { int *p; void foo() const; }; struct MutBase { mutable int b_mut; }; struct MutDerived : MutBase { void foo() const; }; struct PBase { int *p; }; struct PDerived : PBase { void foo() const; }; struct Inner { int x; int *p; void bar() const; }; struct Outer { int x; Inner in; void foo() const; }; void checkThatConstMethodWithoutDefinitionDoesNotInvalidateObject() { A t; t.x = 3; t.foo(); clang_analyzer_eval(t.x == 3); // expected-warning{{TRUE}} // Test non-const does invalidate t.bar(); clang_analyzer_eval(t.x); // expected-warning{{UNKNOWN}} } void checkThatConstMethodDoesInvalidateMutableFields() { B t; t.mut = 4; t.foo(); clang_analyzer_eval(t.mut); // expected-warning{{UNKNOWN}} } void checkThatConstMethodDoesInvalidatePointedAtMemory() { int x = 1; C t; t.p = &x; t.foo(); clang_analyzer_eval(x); // expected-warning{{UNKNOWN}} clang_analyzer_eval(t.p == &x); // expected-warning{{TRUE}} } void checkThatConstMethodDoesInvalidateInheritedMutableFields() { MutDerived t; t.b_mut = 4; t.foo(); clang_analyzer_eval(t.b_mut); // expected-warning{{UNKNOWN}} } void checkThatConstMethodDoesInvalidateInheritedPointedAtMemory() { int x = 1; PDerived t; t.p = &x; t.foo(); clang_analyzer_eval(x); // expected-warning{{UNKNOWN}} clang_analyzer_eval(t.p == &x); // expected-warning{{TRUE}} } void checkThatConstMethodDoesInvalidateContainedPointedAtMemory() { int x = 1; Outer t; t.x = 2; t.in.p = &x; t.foo(); clang_analyzer_eval(x); // expected-warning{{UNKNOWN}} clang_analyzer_eval(t.x == 2); // expected-warning{{TRUE}} clang_analyzer_eval(t.in.p == &x); // expected-warning{{TRUE}} } void checkThatContainedConstMethodDoesNotInvalidateObjects() { Outer t; t.x = 1; t.in.x = 2; t.in.bar(); clang_analyzer_eval(t.x == 1); // expected-warning{{TRUE}} clang_analyzer_eval(t.in.x == 2); // expected-warning{{TRUE}} } void checkPointerTypedThisExpression(A *a) { a->x = 3; a->foo(); clang_analyzer_eval(a->x == 3); // expected-warning{{TRUE}} a->bar(); clang_analyzer_eval(a->x == 3); // expected-warning{{UNKNOWN}} } void checkReferenceTypedThisExpression(A &a) { a.x = 3; a.foo(); clang_analyzer_eval(a.x == 3); // expected-warning{{TRUE}} a.bar(); clang_analyzer_eval(a.x == 3); // expected-warning{{UNKNOWN}} } // --- Versions of the above tests where the const method is inherited --- // struct B1 { void foo() const; }; struct D1 : public B1 { int x; }; struct D2 : public B1 { mutable int mut; }; struct D3 : public B1 { int *p; }; struct DInner : public B1 { int x; int *p; }; struct DOuter : public B1 { int x; DInner in; }; void checkThatInheritedConstMethodDoesNotInvalidateObject() { D1 t; t.x = 1; t.foo(); clang_analyzer_eval(t.x == 1); // expected-warning{{TRUE}} } void checkThatInheritedConstMethodDoesInvalidateMutableFields() { D2 t; t.mut = 1; t.foo(); clang_analyzer_eval(t.mut); // expected-warning{{UNKNOWN}} } void checkThatInheritedConstMethodDoesInvalidatePointedAtMemory() { int x = 1; D3 t; t.p = &x; t.foo(); clang_analyzer_eval(x); // expected-warning{{UNKNOWN}} clang_analyzer_eval(t.p == &x); // expected-warning{{TRUE}} } void checkThatInheritedConstMethodDoesInvalidateContainedPointedAtMemory() { int x = 1; DOuter t; t.x = 2; t.in.x = 3; t.in.p = &x; t.foo(); clang_analyzer_eval(x); // expected-warning{{UNKNOWN}} clang_analyzer_eval(t.x == 2); // expected-warning{{TRUE}} clang_analyzer_eval(t.in.x == 3); // expected-warning{{TRUE}} clang_analyzer_eval(t.in.p == &x); // expected-warning{{TRUE}} } void checkThatInheritedContainedConstMethodDoesNotInvalidateObjects() { DOuter t; t.x = 1; t.in.x = 2; t.in.foo(); clang_analyzer_eval(t.x == 1); // expected-warning{{TRUE}} clang_analyzer_eval(t.in.x == 2); // expected-warning{{TRUE}} } // --- PR21606 --- // struct s1 { void g(const int *i) const; }; struct s2 { void f(int *i) { m_i = i; m_s.g(m_i); if (m_i) *i = 42; // no-warning } int *m_i; s1 m_s; }; void PR21606() { s2().f(0); } // --- PR25392 --- // struct HasConstMemberFunction { public: void constMemberFunction() const; }; HasConstMemberFunction hasNoReturn() { } // expected-warning {{control reaches end of non-void function}} void testUnknownWithConstMemberFunction() { hasNoReturn().constMemberFunction(); } void testNonRegionLocWithConstMemberFunction() { (*((HasConstMemberFunction *)(&&label))).constMemberFunction(); label: return; } // FIXME // When there is a circular reference to an object and a const method is called // the object is not invalidated because TK_PreserveContents has already been // set. struct Outer2; struct InnerWithRef { Outer2 *ref; }; struct Outer2 { int x; InnerWithRef in; void foo() const; }; void checkThatConstMethodCallDoesInvalidateObjectForCircularReferences() { Outer2 t; t.x = 1; t.in.ref = &t; t.foo(); // FIXME: Should be UNKNOWN. clang_analyzer_eval(t.x); // expected-warning{{TRUE}} } |