Anna Zaks | bfa9ab8 | 2013-01-24 23:15:30 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -verify %s |
Jordan Rose | 65f991c | 2013-02-19 20:28:33 +0000 | [diff] [blame] | 2 | // RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -DCONSTRUCTORS=1 -analyzer-config c++-inlining=constructors -verify %s |
Jordan Rose | b11a3ad | 2012-08-13 22:11:34 +0000 | [diff] [blame] | 3 | |
| 4 | void clang_analyzer_eval(bool); |
Zhongxing Xu | 4fd5681 | 2010-11-26 08:21:53 +0000 | [diff] [blame] | 5 | |
| 6 | class A { |
| 7 | protected: |
| 8 | int x; |
| 9 | }; |
| 10 | |
| 11 | class B : public A { |
| 12 | public: |
| 13 | void f(); |
| 14 | }; |
| 15 | |
| 16 | void B::f() { |
| 17 | x = 3; |
| 18 | } |
Jordan Rose | 2c5f8d7 | 2012-08-09 21:24:02 +0000 | [diff] [blame] | 19 | |
| 20 | |
| 21 | class C : public B { |
| 22 | public: |
| 23 | void g() { |
| 24 | // This used to crash because we are upcasting through two bases. |
| 25 | x = 5; |
| 26 | } |
| 27 | }; |
Jordan Rose | b11a3ad | 2012-08-13 22:11:34 +0000 | [diff] [blame] | 28 | |
| 29 | |
| 30 | namespace VirtualBaseClasses { |
| 31 | class A { |
| 32 | protected: |
| 33 | int x; |
| 34 | }; |
| 35 | |
| 36 | class B : public virtual A { |
| 37 | public: |
| 38 | int getX() { return x; } |
| 39 | }; |
| 40 | |
| 41 | class C : public virtual A { |
| 42 | public: |
| 43 | void setX() { x = 42; } |
| 44 | }; |
| 45 | |
| 46 | class D : public B, public C {}; |
| 47 | class DV : virtual public B, public C {}; |
| 48 | class DV2 : public B, virtual public C {}; |
| 49 | |
| 50 | void test() { |
| 51 | D d; |
| 52 | d.setX(); |
| 53 | clang_analyzer_eval(d.getX() == 42); // expected-warning{{TRUE}} |
| 54 | |
| 55 | DV dv; |
| 56 | dv.setX(); |
| 57 | clang_analyzer_eval(dv.getX() == 42); // expected-warning{{TRUE}} |
| 58 | |
| 59 | DV2 dv2; |
| 60 | dv2.setX(); |
| 61 | clang_analyzer_eval(dv2.getX() == 42); // expected-warning{{TRUE}} |
| 62 | } |
| 63 | |
| 64 | |
| 65 | // Make sure we're consistent about the offset of the A subobject within an |
| 66 | // Intermediate virtual base class. |
| 67 | class Padding1 { int unused; }; |
| 68 | class Padding2 { int unused; }; |
| 69 | class Intermediate : public Padding1, public A, public Padding2 {}; |
| 70 | |
| 71 | class BI : public virtual Intermediate { |
| 72 | public: |
| 73 | int getX() { return x; } |
| 74 | }; |
| 75 | |
| 76 | class CI : public virtual Intermediate { |
| 77 | public: |
| 78 | void setX() { x = 42; } |
| 79 | }; |
| 80 | |
| 81 | class DI : public BI, public CI {}; |
| 82 | |
| 83 | void testIntermediate() { |
| 84 | DI d; |
| 85 | d.setX(); |
| 86 | clang_analyzer_eval(d.getX() == 42); // expected-warning{{TRUE}} |
| 87 | } |
| 88 | } |
Jordan Rose | 0a56298 | 2012-08-13 22:11:42 +0000 | [diff] [blame] | 89 | |
| 90 | |
| 91 | namespace DynamicVirtualUpcast { |
| 92 | class A { |
| 93 | public: |
| 94 | virtual ~A(); |
| 95 | }; |
| 96 | |
| 97 | class B : virtual public A {}; |
| 98 | class C : virtual public B {}; |
| 99 | class D : virtual public C {}; |
| 100 | |
| 101 | bool testCast(A *a) { |
| 102 | return dynamic_cast<B*>(a) && dynamic_cast<C*>(a); |
| 103 | } |
| 104 | |
| 105 | void test() { |
| 106 | D d; |
| 107 | clang_analyzer_eval(testCast(&d)); // expected-warning{{TRUE}} |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | namespace DynamicMultipleInheritanceUpcast { |
| 112 | class B { |
| 113 | public: |
| 114 | virtual ~B(); |
| 115 | }; |
| 116 | class C { |
| 117 | public: |
| 118 | virtual ~C(); |
| 119 | }; |
| 120 | class D : public B, public C {}; |
| 121 | |
| 122 | bool testCast(B *a) { |
| 123 | return dynamic_cast<C*>(a); |
| 124 | } |
| 125 | |
| 126 | void test() { |
| 127 | D d; |
| 128 | clang_analyzer_eval(testCast(&d)); // expected-warning{{TRUE}} |
| 129 | } |
| 130 | |
| 131 | |
| 132 | class DV : virtual public B, virtual public C {}; |
| 133 | |
| 134 | void testVirtual() { |
| 135 | DV d; |
| 136 | clang_analyzer_eval(testCast(&d)); // expected-warning{{TRUE}} |
| 137 | } |
| 138 | } |
Jordan Rose | 65f991c | 2013-02-19 20:28:33 +0000 | [diff] [blame] | 139 | |
| 140 | namespace LazyBindings { |
| 141 | struct Base { |
| 142 | int x; |
| 143 | }; |
| 144 | |
| 145 | struct Derived : public Base { |
| 146 | int y; |
| 147 | }; |
| 148 | |
| 149 | struct DoubleDerived : public Derived { |
| 150 | int z; |
| 151 | }; |
| 152 | |
| 153 | int getX(const Base &obj) { |
| 154 | return obj.x; |
| 155 | } |
| 156 | |
| 157 | int getY(const Derived &obj) { |
| 158 | return obj.y; |
| 159 | } |
| 160 | |
| 161 | void testDerived() { |
| 162 | Derived d; |
| 163 | d.x = 1; |
| 164 | d.y = 2; |
| 165 | clang_analyzer_eval(getX(d) == 1); // expected-warning{{TRUE}} |
| 166 | clang_analyzer_eval(getY(d) == 2); // expected-warning{{TRUE}} |
| 167 | |
| 168 | Base b(d); |
| 169 | clang_analyzer_eval(getX(b) == 1); // expected-warning{{TRUE}} |
| 170 | |
| 171 | Derived d2(d); |
| 172 | clang_analyzer_eval(getX(d2) == 1); // expected-warning{{TRUE}} |
| 173 | clang_analyzer_eval(getY(d2) == 2); // expected-warning{{TRUE}} |
| 174 | } |
| 175 | |
| 176 | void testDoubleDerived() { |
| 177 | DoubleDerived d; |
| 178 | d.x = 1; |
| 179 | d.y = 2; |
| 180 | clang_analyzer_eval(getX(d) == 1); // expected-warning{{TRUE}} |
| 181 | clang_analyzer_eval(getY(d) == 2); // expected-warning{{TRUE}} |
| 182 | |
| 183 | Base b(d); |
| 184 | clang_analyzer_eval(getX(b) == 1); // expected-warning{{TRUE}} |
| 185 | |
| 186 | Derived d2(d); |
| 187 | clang_analyzer_eval(getX(d2) == 1); // expected-warning{{TRUE}} |
| 188 | clang_analyzer_eval(getY(d2) == 2); // expected-warning{{TRUE}} |
| 189 | |
| 190 | DoubleDerived d3(d); |
| 191 | clang_analyzer_eval(getX(d3) == 1); // expected-warning{{TRUE}} |
| 192 | clang_analyzer_eval(getY(d3) == 2); // expected-warning{{TRUE}} |
| 193 | } |
| 194 | |
| 195 | namespace WithOffset { |
| 196 | struct Offset { |
| 197 | int padding; |
| 198 | }; |
| 199 | |
| 200 | struct OffsetDerived : private Offset, public Base { |
| 201 | int y; |
| 202 | }; |
| 203 | |
| 204 | struct DoubleOffsetDerived : public OffsetDerived { |
| 205 | int z; |
| 206 | }; |
| 207 | |
| 208 | int getY(const OffsetDerived &obj) { |
| 209 | return obj.y; |
| 210 | } |
| 211 | |
| 212 | void testDerived() { |
| 213 | OffsetDerived d; |
| 214 | d.x = 1; |
| 215 | d.y = 2; |
| 216 | clang_analyzer_eval(getX(d) == 1); // expected-warning{{TRUE}} |
| 217 | clang_analyzer_eval(getY(d) == 2); // expected-warning{{TRUE}} |
| 218 | |
| 219 | Base b(d); |
| 220 | clang_analyzer_eval(getX(b) == 1); // expected-warning{{TRUE}} |
| 221 | |
| 222 | OffsetDerived d2(d); |
| 223 | clang_analyzer_eval(getX(d2) == 1); // expected-warning{{TRUE}} |
| 224 | clang_analyzer_eval(getY(d2) == 2); // expected-warning{{TRUE}} |
| 225 | } |
| 226 | |
| 227 | void testDoubleDerived() { |
| 228 | DoubleOffsetDerived d; |
| 229 | d.x = 1; |
| 230 | d.y = 2; |
| 231 | clang_analyzer_eval(getX(d) == 1); // expected-warning{{TRUE}} |
| 232 | clang_analyzer_eval(getY(d) == 2); // expected-warning{{TRUE}} |
| 233 | |
| 234 | Base b(d); |
| 235 | clang_analyzer_eval(getX(b) == 1); // expected-warning{{TRUE}} |
| 236 | |
| 237 | OffsetDerived d2(d); |
| 238 | clang_analyzer_eval(getX(d2) == 1); // expected-warning{{TRUE}} |
| 239 | clang_analyzer_eval(getY(d2) == 2); // expected-warning{{TRUE}} |
| 240 | |
| 241 | DoubleOffsetDerived d3(d); |
| 242 | clang_analyzer_eval(getX(d3) == 1); // expected-warning{{TRUE}} |
| 243 | clang_analyzer_eval(getY(d3) == 2); // expected-warning{{TRUE}} |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | namespace WithVTable { |
| 248 | struct DerivedVTBL : public Base { |
| 249 | int y; |
| 250 | virtual void method(); |
| 251 | }; |
| 252 | |
| 253 | struct DoubleDerivedVTBL : public DerivedVTBL { |
| 254 | int z; |
| 255 | }; |
| 256 | |
| 257 | int getY(const DerivedVTBL &obj) { |
| 258 | return obj.y; |
| 259 | } |
| 260 | |
| 261 | int getZ(const DoubleDerivedVTBL &obj) { |
| 262 | return obj.z; |
| 263 | } |
| 264 | |
| 265 | void testDerived() { |
| 266 | DerivedVTBL d; |
| 267 | d.x = 1; |
| 268 | d.y = 2; |
| 269 | clang_analyzer_eval(getX(d) == 1); // expected-warning{{TRUE}} |
| 270 | clang_analyzer_eval(getY(d) == 2); // expected-warning{{TRUE}} |
| 271 | |
| 272 | Base b(d); |
| 273 | clang_analyzer_eval(getX(b) == 1); // expected-warning{{TRUE}} |
| 274 | |
| 275 | #if CONSTRUCTORS |
| 276 | DerivedVTBL d2(d); |
| 277 | clang_analyzer_eval(getX(d2) == 1); // expected-warning{{TRUE}} |
| 278 | clang_analyzer_eval(getY(d2) == 2); // expected-warning{{TRUE}} |
| 279 | #endif |
| 280 | } |
| 281 | |
| 282 | #if CONSTRUCTORS |
| 283 | void testDoubleDerived() { |
| 284 | DoubleDerivedVTBL d; |
| 285 | d.x = 1; |
| 286 | d.y = 2; |
| 287 | d.z = 3; |
| 288 | clang_analyzer_eval(getX(d) == 1); // expected-warning{{TRUE}} |
| 289 | clang_analyzer_eval(getY(d) == 2); // expected-warning{{TRUE}} |
| 290 | clang_analyzer_eval(getZ(d) == 3); // expected-warning{{TRUE}} |
| 291 | |
| 292 | Base b(d); |
| 293 | clang_analyzer_eval(getX(b) == 1); // expected-warning{{TRUE}} |
| 294 | |
| 295 | DerivedVTBL d2(d); |
| 296 | clang_analyzer_eval(getX(d2) == 1); // expected-warning{{TRUE}} |
| 297 | clang_analyzer_eval(getY(d2) == 2); // expected-warning{{TRUE}} |
| 298 | |
| 299 | DoubleDerivedVTBL d3(d); |
| 300 | clang_analyzer_eval(getX(d3) == 1); // expected-warning{{TRUE}} |
| 301 | clang_analyzer_eval(getY(d3) == 2); // expected-warning{{TRUE}} |
| 302 | clang_analyzer_eval(getZ(d3) == 3); // expected-warning{{TRUE}} |
| 303 | } |
| 304 | #endif |
| 305 | } |
Jordan Rose | 11f0cae | 2013-02-21 01:34:51 +0000 | [diff] [blame] | 306 | |
| 307 | #if CONSTRUCTORS |
| 308 | namespace Nested { |
| 309 | struct NonTrivialCopy { |
| 310 | int padding; |
| 311 | NonTrivialCopy() {} |
| 312 | NonTrivialCopy(const NonTrivialCopy &) {} |
| 313 | }; |
| 314 | |
| 315 | struct FullyDerived : private NonTrivialCopy, public Derived { |
| 316 | int z; |
| 317 | }; |
| 318 | |
| 319 | struct Wrapper { |
| 320 | FullyDerived d; |
| 321 | int zz; |
| 322 | |
| 323 | Wrapper(const FullyDerived &d) : d(d), zz(0) {} |
| 324 | }; |
| 325 | |
| 326 | void test5() { |
| 327 | Wrapper w((FullyDerived())); |
| 328 | w.d.x = 1; |
| 329 | |
| 330 | Wrapper w2(w); |
| 331 | clang_analyzer_eval(getX(w2.d) == 1); // expected-warning{{TRUE}} |
| 332 | } |
| 333 | } |
| 334 | #endif |
Jordan Rose | 65f991c | 2013-02-19 20:28:33 +0000 | [diff] [blame] | 335 | } |
Jordan Rose | ae7396c | 2013-02-22 19:33:13 +0000 | [diff] [blame] | 336 | |
| 337 | namespace Redeclaration { |
| 338 | class Base; |
| 339 | |
| 340 | class Base { |
| 341 | public: |
| 342 | virtual int foo(); |
| 343 | int get() { return value; } |
| 344 | |
| 345 | int value; |
| 346 | }; |
| 347 | |
| 348 | class Derived : public Base { |
| 349 | public: |
| 350 | virtual int bar(); |
| 351 | }; |
| 352 | |
| 353 | void test(Derived d) { |
| 354 | d.foo(); // don't crash |
| 355 | d.bar(); // sanity check |
| 356 | |
| 357 | Base &b = d; |
| 358 | b.foo(); // don't crash |
| 359 | |
| 360 | d.value = 42; // don't crash |
| 361 | clang_analyzer_eval(d.get() == 42); // expected-warning{{TRUE}} |
| 362 | clang_analyzer_eval(b.get() == 42); // expected-warning{{TRUE}} |
| 363 | } |
| 364 | }; |
| 365 | |