1 // RUN: %clang_cc1 -fsyntax-only -fopenmp=libiomp5 -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify %s 2 3 class S { 4 int a; 5 S() : a(0) {} 6 7 public: 8 S(int v) : a(v) {} 9 S(const S &s) : a(s.a) {} 10 }; 11 12 static int sii; 13 #pragma omp threadprivate(sii) // expected-note {{defined as threadprivate or thread local}} 14 15 int test_iteration_spaces() { 16 const int N = 100; 17 float a[N], b[N], c[N]; 18 int ii, jj, kk; 19 float fii; 20 double dii; 21 #pragma omp parallel 22 #pragma omp for 23 for (int i = 0; i < 10; i += 1) { 24 c[i] = a[i] + b[i]; 25 } 26 #pragma omp parallel 27 #pragma omp for 28 for (char i = 0; i < 10; i++) { 29 c[i] = a[i] + b[i]; 30 } 31 #pragma omp parallel 32 #pragma omp for 33 for (char i = 0; i < 10; i += '\1') { 34 c[i] = a[i] + b[i]; 35 } 36 #pragma omp parallel 37 #pragma omp for 38 for (long long i = 0; i < 10; i++) { 39 c[i] = a[i] + b[i]; 40 } 41 #pragma omp parallel 42 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}} 43 #pragma omp for 44 for (long long i = 0; i < 10; i += 1.5) { 45 c[i] = a[i] + b[i]; 46 } 47 #pragma omp parallel 48 #pragma omp for 49 for (long long i = 0; i < 'z'; i += 1u) { 50 c[i] = a[i] + b[i]; 51 } 52 #pragma omp parallel 53 // expected-error@+2 {{variable must be of integer or random access iterator type}} 54 #pragma omp for 55 for (float fi = 0; fi < 10.0; fi++) { 56 c[(int)fi] = a[(int)fi] + b[(int)fi]; 57 } 58 #pragma omp parallel 59 // expected-error@+2 {{variable must be of integer or random access iterator type}} 60 #pragma omp for 61 for (double fi = 0; fi < 10.0; fi++) { 62 c[(int)fi] = a[(int)fi] + b[(int)fi]; 63 } 64 #pragma omp parallel 65 // expected-error@+2 {{variable must be of integer or random access iterator type}} 66 #pragma omp for 67 for (int &ref = ii; ref < 10; ref++) { 68 } 69 #pragma omp parallel 70 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 71 #pragma omp for 72 for (int i; i < 10; i++) 73 c[i] = a[i]; 74 75 #pragma omp parallel 76 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 77 #pragma omp for 78 for (int i = 0, j = 0; i < 10; ++i) 79 c[i] = a[i]; 80 81 #pragma omp parallel 82 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 83 #pragma omp for 84 for (; ii < 10; ++ii) 85 c[ii] = a[ii]; 86 87 #pragma omp parallel 88 // expected-warning@+3 {{expression result unused}} 89 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 90 #pragma omp for 91 for (ii + 1; ii < 10; ++ii) 92 c[ii] = a[ii]; 93 94 #pragma omp parallel 95 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 96 #pragma omp for 97 for (c[ii] = 0; ii < 10; ++ii) 98 c[ii] = a[ii]; 99 100 #pragma omp parallel 101 // Ok to skip parenthesises. 102 #pragma omp for 103 for (((ii)) = 0; ii < 10; ++ii) 104 c[ii] = a[ii]; 105 106 #pragma omp parallel 107 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 108 #pragma omp for 109 for (int i = 0; i; i++) 110 c[i] = a[i]; 111 112 #pragma omp parallel 113 // expected-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 114 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}} 115 #pragma omp for 116 for (int i = 0; jj < kk; ii++) 117 c[i] = a[i]; 118 119 #pragma omp parallel 120 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 121 #pragma omp for 122 for (int i = 0; !!i; i++) 123 c[i] = a[i]; 124 125 #pragma omp parallel 126 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 127 #pragma omp for 128 for (int i = 0; i != 1; i++) 129 c[i] = a[i]; 130 131 #pragma omp parallel 132 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 133 #pragma omp for 134 for (int i = 0;; i++) 135 c[i] = a[i]; 136 137 #pragma omp parallel 138 // Ok. 139 #pragma omp for 140 for (int i = 11; i > 10; i--) 141 c[i] = a[i]; 142 143 #pragma omp parallel 144 // Ok. 145 #pragma omp for 146 for (int i = 0; i < 10; ++i) 147 c[i] = a[i]; 148 149 #pragma omp parallel 150 // Ok. 151 #pragma omp for 152 for (ii = 0; ii < 10; ++ii) 153 c[ii] = a[ii]; 154 155 #pragma omp parallel 156 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 157 #pragma omp for 158 for (ii = 0; ii < 10; ++jj) 159 c[ii] = a[jj]; 160 161 #pragma omp parallel 162 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 163 #pragma omp for 164 for (ii = 0; ii < 10; ++++ii) 165 c[ii] = a[ii]; 166 167 #pragma omp parallel 168 // Ok but undefined behavior (in general, cannot check that incr 169 // is really loop-invariant). 170 #pragma omp for 171 for (ii = 0; ii < 10; ii = ii + ii) 172 c[ii] = a[ii]; 173 174 #pragma omp parallel 175 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}} 176 #pragma omp for 177 for (ii = 0; ii < 10; ii = ii + 1.0f) 178 c[ii] = a[ii]; 179 180 #pragma omp parallel 181 // Ok - step was converted to integer type. 182 #pragma omp for 183 for (ii = 0; ii < 10; ii = ii + (int)1.1f) 184 c[ii] = a[ii]; 185 186 #pragma omp parallel 187 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 188 #pragma omp for 189 for (ii = 0; ii < 10; jj = ii + 2) 190 c[ii] = a[ii]; 191 192 #pragma omp parallel 193 // expected-warning@+3 {{relational comparison result unused}} 194 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 195 #pragma omp for 196 for (ii = 0; ii<10; jj> kk + 2) 197 c[ii] = a[ii]; 198 199 #pragma omp parallel 200 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 201 #pragma omp for 202 for (ii = 0; ii < 10;) 203 c[ii] = a[ii]; 204 205 #pragma omp parallel 206 // expected-warning@+3 {{expression result unused}} 207 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 208 #pragma omp for 209 for (ii = 0; ii < 10; !ii) 210 c[ii] = a[ii]; 211 212 #pragma omp parallel 213 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 214 #pragma omp for 215 for (ii = 0; ii < 10; ii ? ++ii : ++jj) 216 c[ii] = a[ii]; 217 218 #pragma omp parallel 219 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 220 #pragma omp for 221 for (ii = 0; ii < 10; ii = ii < 10) 222 c[ii] = a[ii]; 223 224 #pragma omp parallel 225 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 226 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 227 #pragma omp for 228 for (ii = 0; ii < 10; ii = ii + 0) 229 c[ii] = a[ii]; 230 231 #pragma omp parallel 232 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 233 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 234 #pragma omp for 235 for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45)) 236 c[ii] = a[ii]; 237 238 #pragma omp parallel 239 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 240 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 241 #pragma omp for 242 for (ii = 0; (ii) < 10; ii -= 25) 243 c[ii] = a[ii]; 244 245 #pragma omp parallel 246 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 247 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 248 #pragma omp for 249 for (ii = 0; (ii < 10); ii -= 0) 250 c[ii] = a[ii]; 251 252 #pragma omp parallel 253 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 254 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 255 #pragma omp for 256 for (ii = 0; ii > 10; (ii += 0)) 257 c[ii] = a[ii]; 258 259 #pragma omp parallel 260 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 261 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 262 #pragma omp for 263 for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii)) 264 c[ii] = a[ii]; 265 266 #pragma omp parallel 267 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 268 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 269 #pragma omp for 270 for ((ii = 0); ii > 10; (ii -= 0)) 271 c[ii] = a[ii]; 272 273 #pragma omp parallel 274 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 275 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 276 #pragma omp for 277 for (ii = 0; (ii < 10); (ii -= 0)) 278 c[ii] = a[ii]; 279 280 #pragma omp parallel 281 // expected-note@+2 {{defined as firstprivate}} 282 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be firstprivate, predetermined as private}} 283 #pragma omp for firstprivate(ii) 284 for (ii = 0; ii < 10; ii++) 285 c[ii] = a[ii]; 286 287 #pragma omp parallel 288 // expected-error@+3 {{unexpected OpenMP clause 'linear' in directive '#pragma omp for'}} 289 // expected-note@+2 {{defined as linear}} 290 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be linear, predetermined as private}} 291 #pragma omp for linear(ii) 292 for (ii = 0; ii < 10; ii++) 293 c[ii] = a[ii]; 294 295 #pragma omp parallel 296 #pragma omp for private(ii) 297 for (ii = 0; ii < 10; ii++) 298 c[ii] = a[ii]; 299 300 #pragma omp parallel 301 #pragma omp for lastprivate(ii) 302 for (ii = 0; ii < 10; ii++) 303 c[ii] = a[ii]; 304 305 #pragma omp parallel 306 { 307 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be threadprivate or thread local, predetermined as private}} 308 #pragma omp for 309 for (sii = 0; sii < 10; sii += 1) 310 c[sii] = a[sii]; 311 } 312 313 #pragma omp parallel 314 // expected-error@+2 {{statement after '#pragma omp for' must be a for loop}} 315 #pragma omp for 316 for (auto &item : a) { 317 item = item + 1; 318 } 319 320 #pragma omp parallel 321 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 322 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}} 323 #pragma omp for 324 for (unsigned i = 9; i < 10; i--) { 325 c[i] = a[i] + b[i]; 326 } 327 328 int(*lb)[4] = nullptr; 329 #pragma omp parallel 330 #pragma omp for 331 for (int(*p)[4] = lb; p < lb + 8; ++p) { 332 } 333 334 #pragma omp parallel 335 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 336 #pragma omp for 337 for (int a{0}; a < 10; ++a) { 338 } 339 340 return 0; 341 } 342 343 // Iterators allowed in openmp for-loops. 344 namespace std { 345 struct random_access_iterator_tag {}; 346 template <class Iter> 347 struct iterator_traits { 348 typedef typename Iter::difference_type difference_type; 349 typedef typename Iter::iterator_category iterator_category; 350 }; 351 template <class Iter> 352 typename iterator_traits<Iter>::difference_type 353 distance(Iter first, Iter last) { return first - last; } 354 } 355 class Iter0 { 356 public: 357 Iter0() {} 358 Iter0(const Iter0 &) {} 359 Iter0 operator++() { return *this; } 360 Iter0 operator--() { return *this; } 361 bool operator<(Iter0 a) { return true; } 362 }; 363 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}} 364 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}} 365 int operator-(Iter0 a, Iter0 b) { return 0; } 366 class Iter1 { 367 public: 368 Iter1(float f = 0.0f, double d = 0.0) {} 369 Iter1(const Iter1 &) {} 370 Iter1 operator++() { return *this; } 371 Iter1 operator--() { return *this; } 372 bool operator<(Iter1 a) { return true; } 373 bool operator>=(Iter1 a) { return false; } 374 }; 375 class GoodIter { 376 public: 377 GoodIter() {} 378 GoodIter(const GoodIter &) {} 379 GoodIter(int fst, int snd) {} 380 GoodIter &operator=(const GoodIter &that) { return *this; } 381 GoodIter &operator=(const Iter0 &that) { return *this; } 382 GoodIter &operator+=(int x) { return *this; } 383 GoodIter &operator-=(int x) { return *this; } 384 explicit GoodIter(void *) {} 385 GoodIter operator++() { return *this; } 386 GoodIter operator--() { return *this; } 387 bool operator!() { return true; } 388 bool operator<(GoodIter a) { return true; } 389 bool operator<=(GoodIter a) { return true; } 390 bool operator>=(GoodIter a) { return false; } 391 typedef int difference_type; 392 typedef std::random_access_iterator_tag iterator_category; 393 }; 394 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}} 395 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 396 int operator-(GoodIter a, GoodIter b) { return 0; } 397 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}} 398 GoodIter operator-(GoodIter a) { return a; } 399 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}} 400 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 401 GoodIter operator-(GoodIter a, int v) { return GoodIter(); } 402 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}} 403 GoodIter operator+(GoodIter a, int v) { return GoodIter(); } 404 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}} 405 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}} 406 GoodIter operator-(int v, GoodIter a) { return GoodIter(); } 407 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}} 408 GoodIter operator+(int v, GoodIter a) { return GoodIter(); } 409 410 int test_with_random_access_iterator() { 411 GoodIter begin, end; 412 Iter0 begin0, end0; 413 #pragma omp parallel 414 #pragma omp for 415 for (GoodIter I = begin; I < end; ++I) 416 ++I; 417 #pragma omp parallel 418 // expected-error@+2 {{variable must be of integer or random access iterator type}} 419 #pragma omp for 420 for (GoodIter &I = begin; I < end; ++I) 421 ++I; 422 #pragma omp parallel 423 #pragma omp for 424 for (GoodIter I = begin; I >= end; --I) 425 ++I; 426 #pragma omp parallel 427 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 428 #pragma omp for 429 for (GoodIter I(begin); I < end; ++I) 430 ++I; 431 #pragma omp parallel 432 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 433 #pragma omp for 434 for (GoodIter I(nullptr); I < end; ++I) 435 ++I; 436 #pragma omp parallel 437 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 438 #pragma omp for 439 for (GoodIter I(0); I < end; ++I) 440 ++I; 441 #pragma omp parallel 442 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 443 #pragma omp for 444 for (GoodIter I(1, 2); I < end; ++I) 445 ++I; 446 #pragma omp parallel 447 #pragma omp for 448 for (begin = GoodIter(0); begin < end; ++begin) 449 ++begin; 450 // expected-error@+4 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}} 451 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 452 #pragma omp parallel 453 #pragma omp for 454 for (begin = begin0; begin < end; ++begin) 455 ++begin; 456 #pragma omp parallel 457 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 458 #pragma omp for 459 for (++begin; begin < end; ++begin) 460 ++begin; 461 #pragma omp parallel 462 #pragma omp for 463 for (begin = end; begin < end; ++begin) 464 ++begin; 465 #pragma omp parallel 466 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 467 #pragma omp for 468 for (GoodIter I = begin; I - I; ++I) 469 ++I; 470 #pragma omp parallel 471 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 472 #pragma omp for 473 for (GoodIter I = begin; begin < end; ++I) 474 ++I; 475 #pragma omp parallel 476 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 477 #pragma omp for 478 for (GoodIter I = begin; !I; ++I) 479 ++I; 480 #pragma omp parallel 481 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 482 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 483 #pragma omp for 484 for (GoodIter I = begin; I >= end; I = I + 1) 485 ++I; 486 #pragma omp parallel 487 #pragma omp for 488 for (GoodIter I = begin; I >= end; I = I - 1) 489 ++I; 490 #pragma omp parallel 491 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 492 #pragma omp for 493 for (GoodIter I = begin; I >= end; I = -I) 494 ++I; 495 #pragma omp parallel 496 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 497 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 498 #pragma omp for 499 for (GoodIter I = begin; I >= end; I = 2 + I) 500 ++I; 501 #pragma omp parallel 502 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 503 #pragma omp for 504 for (GoodIter I = begin; I >= end; I = 2 - I) 505 ++I; 506 // In the following example, we cannot update the loop variable using '+=' 507 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 508 #pragma omp parallel 509 #pragma omp for 510 for (Iter0 I = begin0; I < end0; ++I) 511 ++I; 512 #pragma omp parallel 513 // Initializer is constructor without params. 514 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 515 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 516 #pragma omp for 517 for (Iter0 I; I < end0; ++I) 518 ++I; 519 Iter1 begin1, end1; 520 // expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'Iter1')}} 521 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 522 #pragma omp parallel 523 #pragma omp for 524 for (Iter1 I = begin1; I < end1; ++I) 525 ++I; 526 #pragma omp parallel 527 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 528 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 529 #pragma omp for 530 for (Iter1 I = begin1; I >= end1; ++I) 531 ++I; 532 #pragma omp parallel 533 // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'Iter1')}} 534 // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 535 // Initializer is constructor with all default params. 536 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 537 #pragma omp for 538 for (Iter1 I; I < end1; ++I) { 539 } 540 return 0; 541 } 542 543 template <typename IT, int ST> 544 class TC { 545 public: 546 int dotest_lt(IT begin, IT end) { 547 #pragma omp parallel 548 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 549 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 550 #pragma omp for 551 for (IT I = begin; I < end; I = I + ST) { 552 ++I; 553 } 554 #pragma omp parallel 555 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 556 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 557 #pragma omp for 558 for (IT I = begin; I <= end; I += ST) { 559 ++I; 560 } 561 #pragma omp parallel 562 #pragma omp for 563 for (IT I = begin; I < end; ++I) { 564 ++I; 565 } 566 } 567 568 static IT step() { 569 return IT(ST); 570 } 571 }; 572 template <typename IT, int ST = 0> 573 int dotest_gt(IT begin, IT end) { 574 #pragma omp parallel 575 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 576 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 577 #pragma omp for 578 for (IT I = begin; I >= end; I = I + ST) { 579 ++I; 580 } 581 #pragma omp parallel 582 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 583 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 584 #pragma omp for 585 for (IT I = begin; I >= end; I += ST) { 586 ++I; 587 } 588 589 #pragma omp parallel 590 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 591 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 592 #pragma omp for 593 for (IT I = begin; I >= end; ++I) { 594 ++I; 595 } 596 597 #pragma omp parallel 598 #pragma omp for 599 for (IT I = begin; I < end; I += TC<int, ST>::step()) { 600 ++I; 601 } 602 } 603 604 void test_with_template() { 605 GoodIter begin, end; 606 TC<GoodIter, 100> t1; 607 TC<GoodIter, -100> t2; 608 t1.dotest_lt(begin, end); 609 t2.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}} 610 dotest_gt(begin, end); // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}} 611 dotest_gt<unsigned, -10>(0, 100); // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, -10>' requested here}} 612 } 613 614 void test_loop_break() { 615 const int N = 100; 616 float a[N], b[N], c[N]; 617 #pragma omp parallel 618 #pragma omp for 619 for (int i = 0; i < 10; i++) { 620 c[i] = a[i] + b[i]; 621 for (int j = 0; j < 10; ++j) { 622 if (a[i] > b[j]) 623 break; // OK in nested loop 624 } 625 switch (i) { 626 case 1: 627 b[i]++; 628 break; 629 default: 630 break; 631 } 632 if (c[i] > 10) 633 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 634 635 if (c[i] > 11) 636 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 637 } 638 639 #pragma omp parallel 640 #pragma omp for 641 for (int i = 0; i < 10; i++) { 642 for (int j = 0; j < 10; j++) { 643 c[i] = a[i] + b[i]; 644 if (c[i] > 10) { 645 if (c[i] < 20) { 646 break; // OK 647 } 648 } 649 } 650 } 651 } 652 653 void test_loop_eh() { 654 const int N = 100; 655 float a[N], b[N], c[N]; 656 #pragma omp parallel 657 #pragma omp for 658 for (int i = 0; i < 10; i++) { 659 c[i] = a[i] + b[i]; 660 try { 661 for (int j = 0; j < 10; ++j) { 662 if (a[i] > b[j]) 663 throw a[i]; 664 } 665 throw a[i]; 666 } catch (float f) { 667 if (f > 0.1) 668 throw a[i]; 669 return; // expected-error {{cannot return from OpenMP region}} 670 } 671 switch (i) { 672 case 1: 673 b[i]++; 674 break; 675 default: 676 break; 677 } 678 for (int j = 0; j < 10; j++) { 679 if (c[i] > 10) 680 throw c[i]; 681 } 682 } 683 if (c[9] > 10) 684 throw c[9]; // OK 685 686 #pragma omp parallel 687 #pragma omp for 688 for (int i = 0; i < 10; ++i) { 689 struct S { 690 void g() { throw 0; } 691 }; 692 } 693 } 694 695 void test_loop_firstprivate_lastprivate() { 696 S s(4); 697 #pragma omp parallel 698 #pragma omp for lastprivate(s) firstprivate(s) 699 for (int i = 0; i < 16; ++i) 700 ; 701 } 702 703 void test_ordered() { 704 #pragma omp parallel 705 #pragma omp for ordered ordered // expected-error {{directive '#pragma omp for' cannot contain more than one 'ordered' clause}} 706 for (int i = 0; i < 16; ++i) 707 ; 708 } 709 710 void test_nowait() { 711 #pragma omp parallel 712 #pragma omp for nowait nowait // expected-error {{directive '#pragma omp for' cannot contain more than one 'nowait' clause}} 713 for (int i = 0; i < 16; ++i) 714 ; 715 } 716