Jordan Rose | bc40386 | 2013-02-15 00:32:15 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -fobjc-arc -analyzer-config c++-inlining=constructors -Wno-null-dereference -std=c++11 -verify %s |
Jordan Rose | bf83e7c | 2012-08-03 23:08:36 +0000 | [diff] [blame] | 2 | |
Jordan Rose | be2e1b1 | 2013-07-17 17:16:33 +0000 | [diff] [blame] | 3 | #include "Inputs/system-header-simulator-cxx.h" |
| 4 | |
Jordan Rose | bf83e7c | 2012-08-03 23:08:36 +0000 | [diff] [blame] | 5 | void clang_analyzer_eval(bool); |
Jordan Rose | de5277f | 2012-08-31 17:06:49 +0000 | [diff] [blame] | 6 | void clang_analyzer_checkInlined(bool); |
Jordan Rose | 1d3ca25 | 2012-07-26 20:04:30 +0000 | [diff] [blame] | 7 | |
Jordan Rose | bc40386 | 2013-02-15 00:32:15 +0000 | [diff] [blame] | 8 | // A simplified version of std::move. |
| 9 | template <typename T> |
| 10 | T &&move(T &obj) { |
| 11 | return static_cast<T &&>(obj); |
| 12 | } |
| 13 | |
| 14 | |
Jordan Rose | 1d3ca25 | 2012-07-26 20:04:30 +0000 | [diff] [blame] | 15 | struct Wrapper { |
| 16 | __strong id obj; |
| 17 | }; |
| 18 | |
| 19 | void test() { |
| 20 | Wrapper w; |
| 21 | // force a diagnostic |
| 22 | *(char *)0 = 1; // expected-warning{{Dereference of null pointer}} |
| 23 | } |
Jordan Rose | bf83e7c | 2012-08-03 23:08:36 +0000 | [diff] [blame] | 24 | |
| 25 | |
| 26 | struct IntWrapper { |
| 27 | int x; |
| 28 | }; |
| 29 | |
| 30 | void testCopyConstructor() { |
| 31 | IntWrapper a; |
| 32 | a.x = 42; |
| 33 | |
| 34 | IntWrapper b(a); |
| 35 | clang_analyzer_eval(b.x == 42); // expected-warning{{TRUE}} |
| 36 | } |
| 37 | |
| 38 | struct NonPODIntWrapper { |
| 39 | int x; |
| 40 | |
| 41 | virtual int get(); |
| 42 | }; |
| 43 | |
| 44 | void testNonPODCopyConstructor() { |
| 45 | NonPODIntWrapper a; |
| 46 | a.x = 42; |
| 47 | |
| 48 | NonPODIntWrapper b(a); |
| 49 | clang_analyzer_eval(b.x == 42); // expected-warning{{TRUE}} |
| 50 | } |
| 51 | |
Jordan Rose | 4e79fdf | 2012-08-15 20:07:17 +0000 | [diff] [blame] | 52 | |
| 53 | namespace ConstructorVirtualCalls { |
| 54 | class A { |
| 55 | public: |
| 56 | int *out1, *out2, *out3; |
| 57 | |
| 58 | virtual int get() { return 1; } |
| 59 | |
| 60 | A(int *out1) { |
| 61 | *out1 = get(); |
| 62 | } |
| 63 | }; |
| 64 | |
| 65 | class B : public A { |
| 66 | public: |
| 67 | virtual int get() { return 2; } |
| 68 | |
| 69 | B(int *out1, int *out2) : A(out1) { |
| 70 | *out2 = get(); |
| 71 | } |
| 72 | }; |
| 73 | |
| 74 | class C : public B { |
| 75 | public: |
| 76 | virtual int get() { return 3; } |
| 77 | |
| 78 | C(int *out1, int *out2, int *out3) : B(out1, out2) { |
| 79 | *out3 = get(); |
| 80 | } |
| 81 | }; |
| 82 | |
| 83 | void test() { |
| 84 | int a, b, c; |
| 85 | |
| 86 | C obj(&a, &b, &c); |
| 87 | clang_analyzer_eval(a == 1); // expected-warning{{TRUE}} |
| 88 | clang_analyzer_eval(b == 2); // expected-warning{{TRUE}} |
| 89 | clang_analyzer_eval(c == 3); // expected-warning{{TRUE}} |
| 90 | |
| 91 | clang_analyzer_eval(obj.get() == 3); // expected-warning{{TRUE}} |
| 92 | |
| 93 | // Sanity check for devirtualization. |
| 94 | A *base = &obj; |
| 95 | clang_analyzer_eval(base->get() == 3); // expected-warning{{TRUE}} |
| 96 | } |
| 97 | } |
| 98 | |
Jordan Rose | de5277f | 2012-08-31 17:06:49 +0000 | [diff] [blame] | 99 | namespace TemporaryConstructor { |
| 100 | class BoolWrapper { |
| 101 | public: |
| 102 | BoolWrapper() { |
| 103 | clang_analyzer_checkInlined(true); // expected-warning{{TRUE}} |
| 104 | value = true; |
| 105 | } |
| 106 | bool value; |
| 107 | }; |
Jordan Rose | 4e79fdf | 2012-08-15 20:07:17 +0000 | [diff] [blame] | 108 | |
Jordan Rose | de5277f | 2012-08-31 17:06:49 +0000 | [diff] [blame] | 109 | void test() { |
| 110 | // PR13717 - Don't crash when a CXXTemporaryObjectExpr is inlined. |
| 111 | if (BoolWrapper().value) |
| 112 | return; |
| 113 | } |
| 114 | } |
Jordan Rose | 0504a59 | 2012-10-01 17:51:35 +0000 | [diff] [blame] | 115 | |
| 116 | |
| 117 | namespace ConstructorUsedAsRValue { |
| 118 | using TemporaryConstructor::BoolWrapper; |
| 119 | |
| 120 | bool extractValue(BoolWrapper b) { |
| 121 | return b.value; |
| 122 | } |
| 123 | |
| 124 | void test() { |
| 125 | bool result = extractValue(BoolWrapper()); |
| 126 | clang_analyzer_eval(result); // expected-warning{{TRUE}} |
| 127 | } |
| 128 | } |
Jordan Rose | bc40386 | 2013-02-15 00:32:15 +0000 | [diff] [blame] | 129 | |
| 130 | namespace PODUninitialized { |
| 131 | class POD { |
| 132 | public: |
| 133 | int x, y; |
| 134 | }; |
| 135 | |
| 136 | class PODWrapper { |
| 137 | public: |
| 138 | POD p; |
| 139 | }; |
| 140 | |
| 141 | class NonPOD { |
| 142 | public: |
| 143 | int x, y; |
| 144 | |
| 145 | NonPOD() {} |
| 146 | NonPOD(const NonPOD &Other) |
| 147 | : x(Other.x), y(Other.y) // expected-warning {{undefined}} |
| 148 | { |
| 149 | } |
| 150 | NonPOD(NonPOD &&Other) |
| 151 | : x(Other.x), y(Other.y) // expected-warning {{undefined}} |
| 152 | { |
| 153 | } |
Jordan Rose | a8d937e | 2013-03-16 02:14:06 +0000 | [diff] [blame] | 154 | |
| 155 | NonPOD &operator=(const NonPOD &Other) |
| 156 | { |
| 157 | x = Other.x; |
| 158 | y = Other.y; // expected-warning {{undefined}} |
| 159 | return *this; |
| 160 | } |
| 161 | NonPOD &operator=(NonPOD &&Other) |
| 162 | { |
| 163 | x = Other.x; |
| 164 | y = Other.y; // expected-warning {{undefined}} |
| 165 | return *this; |
| 166 | } |
Jordan Rose | bc40386 | 2013-02-15 00:32:15 +0000 | [diff] [blame] | 167 | }; |
| 168 | |
| 169 | class NonPODWrapper { |
| 170 | public: |
| 171 | class Inner { |
| 172 | public: |
| 173 | int x, y; |
| 174 | |
| 175 | Inner() {} |
| 176 | Inner(const Inner &Other) |
| 177 | : x(Other.x), y(Other.y) // expected-warning {{undefined}} |
| 178 | { |
| 179 | } |
| 180 | Inner(Inner &&Other) |
| 181 | : x(Other.x), y(Other.y) // expected-warning {{undefined}} |
| 182 | { |
| 183 | } |
Jordan Rose | a8d937e | 2013-03-16 02:14:06 +0000 | [diff] [blame] | 184 | |
| 185 | Inner &operator=(const Inner &Other) |
| 186 | { |
| 187 | x = Other.x; // expected-warning {{undefined}} |
| 188 | y = Other.y; |
| 189 | return *this; |
| 190 | } |
| 191 | Inner &operator=(Inner &&Other) |
| 192 | { |
| 193 | x = Other.x; // expected-warning {{undefined}} |
| 194 | y = Other.y; |
| 195 | return *this; |
| 196 | } |
Jordan Rose | bc40386 | 2013-02-15 00:32:15 +0000 | [diff] [blame] | 197 | }; |
| 198 | |
| 199 | Inner p; |
| 200 | }; |
| 201 | |
| 202 | void testPOD() { |
| 203 | POD p; |
| 204 | p.x = 1; |
| 205 | POD p2 = p; // no-warning |
| 206 | clang_analyzer_eval(p2.x == 1); // expected-warning{{TRUE}} |
| 207 | POD p3 = move(p); // no-warning |
| 208 | clang_analyzer_eval(p3.x == 1); // expected-warning{{TRUE}} |
| 209 | |
| 210 | // Use rvalues as well. |
| 211 | clang_analyzer_eval(POD(p3).x == 1); // expected-warning{{TRUE}} |
| 212 | |
| 213 | PODWrapper w; |
| 214 | w.p.y = 1; |
| 215 | PODWrapper w2 = w; // no-warning |
| 216 | clang_analyzer_eval(w2.p.y == 1); // expected-warning{{TRUE}} |
| 217 | PODWrapper w3 = move(w); // no-warning |
| 218 | clang_analyzer_eval(w3.p.y == 1); // expected-warning{{TRUE}} |
| 219 | |
| 220 | // Use rvalues as well. |
| 221 | clang_analyzer_eval(PODWrapper(w3).p.y == 1); // expected-warning{{TRUE}} |
| 222 | } |
| 223 | |
| 224 | void testNonPOD() { |
| 225 | NonPOD p; |
| 226 | p.x = 1; |
| 227 | NonPOD p2 = p; |
| 228 | } |
| 229 | |
| 230 | void testNonPODMove() { |
| 231 | NonPOD p; |
| 232 | p.x = 1; |
| 233 | NonPOD p2 = move(p); |
| 234 | } |
| 235 | |
| 236 | void testNonPODWrapper() { |
| 237 | NonPODWrapper w; |
| 238 | w.p.y = 1; |
| 239 | NonPODWrapper w2 = w; |
| 240 | } |
| 241 | |
| 242 | void testNonPODWrapperMove() { |
| 243 | NonPODWrapper w; |
| 244 | w.p.y = 1; |
| 245 | NonPODWrapper w2 = move(w); |
| 246 | } |
Jordan Rose | a8d937e | 2013-03-16 02:14:06 +0000 | [diff] [blame] | 247 | |
| 248 | // Not strictly about constructors, but trivial assignment operators should |
| 249 | // essentially work the same way. |
| 250 | namespace AssignmentOperator { |
| 251 | void testPOD() { |
| 252 | POD p; |
| 253 | p.x = 1; |
| 254 | POD p2; |
| 255 | p2 = p; // no-warning |
| 256 | clang_analyzer_eval(p2.x == 1); // expected-warning{{TRUE}} |
| 257 | POD p3; |
| 258 | p3 = move(p); // no-warning |
| 259 | clang_analyzer_eval(p3.x == 1); // expected-warning{{TRUE}} |
| 260 | |
| 261 | PODWrapper w; |
| 262 | w.p.y = 1; |
| 263 | PODWrapper w2; |
| 264 | w2 = w; // no-warning |
| 265 | clang_analyzer_eval(w2.p.y == 1); // expected-warning{{TRUE}} |
| 266 | PODWrapper w3; |
| 267 | w3 = move(w); // no-warning |
| 268 | clang_analyzer_eval(w3.p.y == 1); // expected-warning{{TRUE}} |
| 269 | } |
| 270 | |
| 271 | void testReturnValue() { |
| 272 | POD p; |
| 273 | p.x = 1; |
| 274 | POD p2; |
| 275 | clang_analyzer_eval(&(p2 = p) == &p2); // expected-warning{{TRUE}} |
| 276 | |
| 277 | PODWrapper w; |
| 278 | w.p.y = 1; |
| 279 | PODWrapper w2; |
| 280 | clang_analyzer_eval(&(w2 = w) == &w2); // expected-warning{{TRUE}} |
| 281 | } |
| 282 | |
| 283 | void testNonPOD() { |
| 284 | NonPOD p; |
| 285 | p.x = 1; |
| 286 | NonPOD p2; |
| 287 | p2 = p; |
| 288 | } |
| 289 | |
| 290 | void testNonPODMove() { |
| 291 | NonPOD p; |
| 292 | p.x = 1; |
| 293 | NonPOD p2; |
| 294 | p2 = move(p); |
| 295 | } |
| 296 | |
| 297 | void testNonPODWrapper() { |
| 298 | NonPODWrapper w; |
| 299 | w.p.y = 1; |
| 300 | NonPODWrapper w2; |
| 301 | w2 = w; |
| 302 | } |
| 303 | |
| 304 | void testNonPODWrapperMove() { |
| 305 | NonPODWrapper w; |
| 306 | w.p.y = 1; |
| 307 | NonPODWrapper w2; |
| 308 | w2 = move(w); |
| 309 | } |
| 310 | } |
Jordan Rose | bc40386 | 2013-02-15 00:32:15 +0000 | [diff] [blame] | 311 | } |
Jordan Rose | ecee165 | 2013-04-03 01:39:08 +0000 | [diff] [blame] | 312 | |
| 313 | namespace ArrayMembers { |
| 314 | struct Primitive { |
| 315 | int values[3]; |
| 316 | }; |
| 317 | |
| 318 | void testPrimitive() { |
| 319 | Primitive a = { { 1, 2, 3 } }; |
| 320 | |
| 321 | clang_analyzer_eval(a.values[0] == 1); // expected-warning{{TRUE}} |
| 322 | clang_analyzer_eval(a.values[1] == 2); // expected-warning{{TRUE}} |
| 323 | clang_analyzer_eval(a.values[2] == 3); // expected-warning{{TRUE}} |
| 324 | |
| 325 | Primitive b = a; |
| 326 | |
| 327 | clang_analyzer_eval(b.values[0] == 1); // expected-warning{{TRUE}} |
| 328 | clang_analyzer_eval(b.values[1] == 2); // expected-warning{{TRUE}} |
| 329 | clang_analyzer_eval(b.values[2] == 3); // expected-warning{{TRUE}} |
| 330 | |
| 331 | Primitive c; |
| 332 | c = b; |
| 333 | |
| 334 | clang_analyzer_eval(c.values[0] == 1); // expected-warning{{TRUE}} |
| 335 | clang_analyzer_eval(c.values[1] == 2); // expected-warning{{TRUE}} |
| 336 | clang_analyzer_eval(c.values[2] == 3); // expected-warning{{TRUE}} |
| 337 | } |
| 338 | |
| 339 | struct NestedPrimitive { |
| 340 | int values[2][3]; |
| 341 | }; |
| 342 | |
| 343 | void testNestedPrimitive() { |
| 344 | NestedPrimitive a = { { { 0, 0, 0 }, { 1, 2, 3 } } }; |
| 345 | |
| 346 | clang_analyzer_eval(a.values[1][0] == 1); // expected-warning{{TRUE}} |
| 347 | clang_analyzer_eval(a.values[1][1] == 2); // expected-warning{{TRUE}} |
| 348 | clang_analyzer_eval(a.values[1][2] == 3); // expected-warning{{TRUE}} |
| 349 | |
| 350 | NestedPrimitive b = a; |
| 351 | |
| 352 | clang_analyzer_eval(b.values[1][0] == 1); // expected-warning{{TRUE}} |
| 353 | clang_analyzer_eval(b.values[1][1] == 2); // expected-warning{{TRUE}} |
| 354 | clang_analyzer_eval(b.values[1][2] == 3); // expected-warning{{TRUE}} |
| 355 | |
| 356 | NestedPrimitive c; |
| 357 | c = b; |
| 358 | |
| 359 | clang_analyzer_eval(c.values[1][0] == 1); // expected-warning{{TRUE}} |
| 360 | clang_analyzer_eval(c.values[1][1] == 2); // expected-warning{{TRUE}} |
| 361 | clang_analyzer_eval(c.values[1][2] == 3); // expected-warning{{TRUE}} |
| 362 | } |
| 363 | |
| 364 | struct POD { |
| 365 | IntWrapper values[3]; |
| 366 | }; |
| 367 | |
| 368 | void testPOD() { |
| 369 | POD a = { { { 1 }, { 2 }, { 3 } } }; |
| 370 | |
| 371 | clang_analyzer_eval(a.values[0].x == 1); // expected-warning{{TRUE}} |
| 372 | clang_analyzer_eval(a.values[1].x == 2); // expected-warning{{TRUE}} |
| 373 | clang_analyzer_eval(a.values[2].x == 3); // expected-warning{{TRUE}} |
| 374 | |
| 375 | POD b = a; |
| 376 | |
| 377 | clang_analyzer_eval(b.values[0].x == 1); // expected-warning{{TRUE}} |
| 378 | clang_analyzer_eval(b.values[1].x == 2); // expected-warning{{TRUE}} |
| 379 | clang_analyzer_eval(b.values[2].x == 3); // expected-warning{{TRUE}} |
| 380 | |
| 381 | POD c; |
| 382 | c = b; |
| 383 | |
| 384 | clang_analyzer_eval(c.values[0].x == 1); // expected-warning{{TRUE}} |
| 385 | clang_analyzer_eval(c.values[1].x == 2); // expected-warning{{TRUE}} |
| 386 | clang_analyzer_eval(c.values[2].x == 3); // expected-warning{{TRUE}} |
| 387 | } |
| 388 | |
| 389 | struct NestedPOD { |
| 390 | IntWrapper values[2][3]; |
| 391 | }; |
| 392 | |
| 393 | void testNestedPOD() { |
| 394 | NestedPOD a = { { { { 0 }, { 0 }, { 0 } }, { { 1 }, { 2 }, { 3 } } } }; |
| 395 | |
| 396 | clang_analyzer_eval(a.values[1][0].x == 1); // expected-warning{{TRUE}} |
| 397 | clang_analyzer_eval(a.values[1][1].x == 2); // expected-warning{{TRUE}} |
| 398 | clang_analyzer_eval(a.values[1][2].x == 3); // expected-warning{{TRUE}} |
| 399 | |
| 400 | NestedPOD b = a; |
| 401 | |
| 402 | clang_analyzer_eval(b.values[1][0].x == 1); // expected-warning{{TRUE}} |
| 403 | clang_analyzer_eval(b.values[1][1].x == 2); // expected-warning{{TRUE}} |
| 404 | clang_analyzer_eval(b.values[1][2].x == 3); // expected-warning{{TRUE}} |
| 405 | |
| 406 | NestedPOD c; |
| 407 | c = b; |
| 408 | |
| 409 | clang_analyzer_eval(c.values[1][0].x == 1); // expected-warning{{TRUE}} |
| 410 | clang_analyzer_eval(c.values[1][1].x == 2); // expected-warning{{TRUE}} |
| 411 | clang_analyzer_eval(c.values[1][2].x == 3); // expected-warning{{TRUE}} |
| 412 | } |
| 413 | |
| 414 | struct NonPOD { |
| 415 | NonPODIntWrapper values[3]; |
| 416 | }; |
| 417 | |
| 418 | void testNonPOD() { |
| 419 | NonPOD a; |
| 420 | a.values[0].x = 1; |
| 421 | a.values[1].x = 2; |
| 422 | a.values[2].x = 3; |
| 423 | |
| 424 | clang_analyzer_eval(a.values[0].x == 1); // expected-warning{{TRUE}} |
| 425 | clang_analyzer_eval(a.values[1].x == 2); // expected-warning{{TRUE}} |
| 426 | clang_analyzer_eval(a.values[2].x == 3); // expected-warning{{TRUE}} |
| 427 | |
| 428 | NonPOD b = a; |
| 429 | |
| 430 | clang_analyzer_eval(b.values[0].x == 1); // expected-warning{{UNKNOWN}} |
| 431 | clang_analyzer_eval(b.values[1].x == 2); // expected-warning{{UNKNOWN}} |
| 432 | clang_analyzer_eval(b.values[2].x == 3); // expected-warning{{UNKNOWN}} |
| 433 | |
| 434 | NonPOD c; |
| 435 | c = b; |
| 436 | |
| 437 | clang_analyzer_eval(c.values[0].x == 1); // expected-warning{{UNKNOWN}} |
| 438 | clang_analyzer_eval(c.values[1].x == 2); // expected-warning{{UNKNOWN}} |
| 439 | clang_analyzer_eval(c.values[2].x == 3); // expected-warning{{UNKNOWN}} |
| 440 | } |
| 441 | |
| 442 | struct NestedNonPOD { |
| 443 | NonPODIntWrapper values[2][3]; |
| 444 | }; |
| 445 | |
| 446 | void testNestedNonPOD() { |
| 447 | NestedNonPOD a; |
| 448 | a.values[0][0].x = 0; |
| 449 | a.values[0][1].x = 0; |
| 450 | a.values[0][2].x = 0; |
| 451 | a.values[1][0].x = 1; |
| 452 | a.values[1][1].x = 2; |
| 453 | a.values[1][2].x = 3; |
| 454 | |
| 455 | clang_analyzer_eval(a.values[1][0].x == 1); // expected-warning{{TRUE}} |
| 456 | clang_analyzer_eval(a.values[1][1].x == 2); // expected-warning{{TRUE}} |
| 457 | clang_analyzer_eval(a.values[1][2].x == 3); // expected-warning{{TRUE}} |
| 458 | |
| 459 | NestedNonPOD b = a; |
| 460 | |
| 461 | clang_analyzer_eval(b.values[1][0].x == 1); // expected-warning{{UNKNOWN}} |
| 462 | clang_analyzer_eval(b.values[1][1].x == 2); // expected-warning{{UNKNOWN}} |
| 463 | clang_analyzer_eval(b.values[1][2].x == 3); // expected-warning{{UNKNOWN}} |
| 464 | |
| 465 | NestedNonPOD c; |
| 466 | c = b; |
| 467 | |
| 468 | clang_analyzer_eval(c.values[1][0].x == 1); // expected-warning{{UNKNOWN}} |
| 469 | clang_analyzer_eval(c.values[1][1].x == 2); // expected-warning{{UNKNOWN}} |
| 470 | clang_analyzer_eval(c.values[1][2].x == 3); // expected-warning{{UNKNOWN}} |
| 471 | } |
| 472 | |
| 473 | struct NonPODDefaulted { |
| 474 | NonPODIntWrapper values[3]; |
| 475 | |
| 476 | NonPODDefaulted() = default; |
| 477 | NonPODDefaulted(const NonPODDefaulted &) = default; |
| 478 | NonPODDefaulted &operator=(const NonPODDefaulted &) = default; |
| 479 | }; |
| 480 | |
| 481 | void testNonPODDefaulted() { |
| 482 | NonPODDefaulted a; |
| 483 | a.values[0].x = 1; |
| 484 | a.values[1].x = 2; |
| 485 | a.values[2].x = 3; |
| 486 | |
| 487 | clang_analyzer_eval(a.values[0].x == 1); // expected-warning{{TRUE}} |
| 488 | clang_analyzer_eval(a.values[1].x == 2); // expected-warning{{TRUE}} |
| 489 | clang_analyzer_eval(a.values[2].x == 3); // expected-warning{{TRUE}} |
| 490 | |
| 491 | NonPODDefaulted b = a; |
| 492 | |
| 493 | clang_analyzer_eval(b.values[0].x == 1); // expected-warning{{UNKNOWN}} |
| 494 | clang_analyzer_eval(b.values[1].x == 2); // expected-warning{{UNKNOWN}} |
| 495 | clang_analyzer_eval(b.values[2].x == 3); // expected-warning{{UNKNOWN}} |
| 496 | |
| 497 | NonPODDefaulted c; |
| 498 | c = b; |
| 499 | |
| 500 | clang_analyzer_eval(c.values[0].x == 1); // expected-warning{{UNKNOWN}} |
| 501 | clang_analyzer_eval(c.values[1].x == 2); // expected-warning{{UNKNOWN}} |
| 502 | clang_analyzer_eval(c.values[2].x == 3); // expected-warning{{UNKNOWN}} |
| 503 | } |
| 504 | }; |
Jordan Rose | 1fc9111 | 2013-06-25 01:55:59 +0000 | [diff] [blame] | 505 | |
| 506 | namespace VirtualInheritance { |
| 507 | int counter; |
| 508 | |
| 509 | struct base { |
| 510 | base() { |
| 511 | ++counter; |
| 512 | } |
| 513 | }; |
| 514 | |
| 515 | struct virtual_subclass : public virtual base { |
| 516 | virtual_subclass() {} |
| 517 | }; |
| 518 | |
| 519 | struct double_subclass : public virtual_subclass { |
| 520 | double_subclass() {} |
| 521 | }; |
| 522 | |
| 523 | void test() { |
| 524 | counter = 0; |
| 525 | double_subclass obj; |
| 526 | clang_analyzer_eval(counter == 1); // expected-warning{{TRUE}} |
| 527 | } |
| 528 | |
| 529 | struct double_virtual_subclass : public virtual virtual_subclass { |
| 530 | double_virtual_subclass() {} |
| 531 | }; |
| 532 | |
| 533 | void testVirtual() { |
| 534 | counter = 0; |
| 535 | double_virtual_subclass obj; |
| 536 | clang_analyzer_eval(counter == 1); // expected-warning{{TRUE}} |
| 537 | } |
| 538 | } |
Jordan Rose | be35df1 | 2013-06-25 01:56:08 +0000 | [diff] [blame] | 539 | |
| 540 | namespace ZeroInitialization { |
| 541 | struct raw_pair { |
| 542 | int p1; |
| 543 | int p2; |
| 544 | }; |
| 545 | |
| 546 | void testVarDecl() { |
| 547 | raw_pair p{}; |
| 548 | clang_analyzer_eval(p.p1 == 0); // expected-warning{{TRUE}} |
| 549 | clang_analyzer_eval(p.p2 == 0); // expected-warning{{TRUE}} |
| 550 | } |
| 551 | |
| 552 | void testTemporary() { |
| 553 | clang_analyzer_eval(raw_pair().p1 == 0); // expected-warning{{TRUE}} |
| 554 | clang_analyzer_eval(raw_pair().p2 == 0); // expected-warning{{TRUE}} |
| 555 | } |
| 556 | |
| 557 | void testArray() { |
| 558 | raw_pair p[2] = {}; |
| 559 | clang_analyzer_eval(p[0].p1 == 0); // expected-warning{{TRUE}} |
| 560 | clang_analyzer_eval(p[0].p2 == 0); // expected-warning{{TRUE}} |
| 561 | clang_analyzer_eval(p[1].p1 == 0); // expected-warning{{TRUE}} |
| 562 | clang_analyzer_eval(p[1].p2 == 0); // expected-warning{{TRUE}} |
| 563 | } |
| 564 | |
| 565 | void testNew() { |
| 566 | // FIXME: Pending proper implementation of constructors for 'new'. |
| 567 | raw_pair *pp = new raw_pair(); |
| 568 | clang_analyzer_eval(pp->p1 == 0); // expected-warning{{UNKNOWN}} |
| 569 | clang_analyzer_eval(pp->p2 == 0); // expected-warning{{UNKNOWN}} |
| 570 | } |
| 571 | |
| 572 | void testArrayNew() { |
| 573 | // FIXME: Pending proper implementation of constructors for 'new[]'. |
| 574 | raw_pair *p = new raw_pair[2](); |
| 575 | clang_analyzer_eval(p[0].p1 == 0); // expected-warning{{UNKNOWN}} |
| 576 | clang_analyzer_eval(p[0].p2 == 0); // expected-warning{{UNKNOWN}} |
| 577 | clang_analyzer_eval(p[1].p1 == 0); // expected-warning{{UNKNOWN}} |
| 578 | clang_analyzer_eval(p[1].p2 == 0); // expected-warning{{UNKNOWN}} |
| 579 | } |
| 580 | |
| 581 | struct initializing_pair { |
| 582 | public: |
| 583 | int x; |
| 584 | raw_pair y; |
| 585 | initializing_pair() : x(), y() {} |
| 586 | }; |
| 587 | |
| 588 | void testFieldInitializers() { |
| 589 | initializing_pair p; |
| 590 | clang_analyzer_eval(p.x == 0); // expected-warning{{TRUE}} |
| 591 | clang_analyzer_eval(p.y.p1 == 0); // expected-warning{{TRUE}} |
| 592 | clang_analyzer_eval(p.y.p2 == 0); // expected-warning{{TRUE}} |
| 593 | } |
| 594 | |
| 595 | struct subclass : public raw_pair { |
| 596 | subclass() = default; |
| 597 | }; |
| 598 | |
| 599 | void testSubclass() { |
| 600 | subclass p; |
| 601 | clang_analyzer_eval(p.p1 == 0); // expected-warning{{garbage}} |
| 602 | } |
| 603 | |
| 604 | struct initializing_subclass : public raw_pair { |
| 605 | initializing_subclass() : raw_pair() {} |
| 606 | }; |
| 607 | |
| 608 | void testInitializingSubclass() { |
| 609 | initializing_subclass p; |
| 610 | clang_analyzer_eval(p.p1 == 0); // expected-warning{{TRUE}} |
| 611 | clang_analyzer_eval(p.p2 == 0); // expected-warning{{TRUE}} |
| 612 | } |
| 613 | |
| 614 | struct pair_wrapper { |
| 615 | pair_wrapper() : p() {} |
| 616 | raw_pair p; |
| 617 | }; |
| 618 | |
| 619 | struct virtual_subclass : public virtual pair_wrapper { |
| 620 | virtual_subclass() {} |
| 621 | }; |
| 622 | |
| 623 | struct double_virtual_subclass : public virtual_subclass { |
| 624 | double_virtual_subclass() { |
| 625 | // This previously caused a crash because the pair_wrapper subobject was |
| 626 | // initialized twice. |
| 627 | } |
| 628 | }; |
Jordan Rose | d8dfae6 | 2013-09-11 16:46:50 +0000 | [diff] [blame] | 629 | |
| 630 | class Empty { |
| 631 | public: |
| 632 | Empty(); |
| 633 | }; |
| 634 | |
| 635 | class PairContainer : public Empty { |
| 636 | raw_pair p; |
| 637 | public: |
| 638 | PairContainer() : Empty(), p() { |
| 639 | // This previously caused a crash because the empty base class looked |
| 640 | // like an initialization of 'p'. |
| 641 | } |
| 642 | PairContainer(int) : Empty(), p() { |
| 643 | // Test inlining something else here. |
| 644 | } |
| 645 | }; |
| 646 | |
| 647 | class PairContainerContainer { |
| 648 | int padding; |
| 649 | PairContainer pc; |
| 650 | public: |
| 651 | PairContainerContainer() : pc(1) {} |
| 652 | }; |
Jordan Rose | be35df1 | 2013-06-25 01:56:08 +0000 | [diff] [blame] | 653 | } |
Jordan Rose | be2e1b1 | 2013-07-17 17:16:33 +0000 | [diff] [blame] | 654 | |
| 655 | namespace InitializerList { |
| 656 | struct List { |
| 657 | bool usedInitializerList; |
| 658 | |
| 659 | List() : usedInitializerList(false) {} |
| 660 | List(std::initializer_list<int>) : usedInitializerList(true) {} |
| 661 | }; |
| 662 | |
| 663 | void testStatic() { |
| 664 | List defaultCtor; |
| 665 | clang_analyzer_eval(!defaultCtor.usedInitializerList); // expected-warning{{TRUE}} |
| 666 | |
| 667 | List list{1, 2}; |
| 668 | clang_analyzer_eval(list.usedInitializerList); // expected-warning{{TRUE}} |
| 669 | } |
| 670 | |
| 671 | void testDynamic() { |
| 672 | List *list = new List{1, 2}; |
| 673 | // FIXME: When we handle constructors with 'new', this will be TRUE. |
| 674 | clang_analyzer_eval(list->usedInitializerList); // expected-warning{{UNKNOWN}} |
| 675 | } |
| 676 | } |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 677 | |
| 678 | namespace PR19579 { |
| 679 | class C {}; |
| 680 | |
| 681 | void f() { |
| 682 | C(); |
| 683 | int a; |
| 684 | |
| 685 | extern void use(int); |
| 686 | use(a); // expected-warning{{uninitialized}} |
| 687 | } |
| 688 | |
| 689 | void g() { |
| 690 | struct S { |
| 691 | C c; |
| 692 | int i; |
| 693 | }; |
| 694 | |
| 695 | // This order triggers the initialization of the inner "a" after the |
| 696 | // constructor for "C" is run, which used to confuse the analyzer |
| 697 | // (is "C()" the initialization of "a"?). |
| 698 | struct S s = { |
| 699 | C(), |
| 700 | ({ |
| 701 | int a, b = 0; |
| 702 | 0; |
| 703 | }) |
| 704 | }; |
| 705 | } |
| 706 | } |