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 static int globalii; 15 16 int test_iteration_spaces() { 17 const int N = 100; 18 float a[N], b[N], c[N]; 19 int ii, jj, kk; 20 float fii; 21 double dii; 22 #pragma omp parallel 23 #pragma omp for 24 for (int i = 0; i < 10; i += 1) { 25 c[i] = a[i] + b[i]; 26 } 27 #pragma omp parallel 28 #pragma omp for 29 for (char i = 0; i < 10; i++) { 30 c[i] = a[i] + b[i]; 31 } 32 #pragma omp parallel 33 #pragma omp for 34 for (char i = 0; i < 10; i += '\1') { 35 c[i] = a[i] + b[i]; 36 } 37 #pragma omp parallel 38 #pragma omp for 39 for (long long i = 0; i < 10; i++) { 40 c[i] = a[i] + b[i]; 41 } 42 #pragma omp parallel 43 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}} 44 #pragma omp for 45 for (long long i = 0; i < 10; i += 1.5) { 46 c[i] = a[i] + b[i]; 47 } 48 #pragma omp parallel 49 #pragma omp for 50 for (long long i = 0; i < 'z'; i += 1u) { 51 c[i] = a[i] + b[i]; 52 } 53 #pragma omp parallel 54 // expected-error@+2 {{variable must be of integer or random access iterator type}} 55 #pragma omp for 56 for (float fi = 0; fi < 10.0; fi++) { 57 c[(int)fi] = a[(int)fi] + b[(int)fi]; 58 } 59 #pragma omp parallel 60 // expected-error@+2 {{variable must be of integer or random access iterator type}} 61 #pragma omp for 62 for (double fi = 0; fi < 10.0; fi++) { 63 c[(int)fi] = a[(int)fi] + b[(int)fi]; 64 } 65 #pragma omp parallel 66 // expected-error@+2 {{variable must be of integer or random access iterator type}} 67 #pragma omp for 68 for (int &ref = ii; ref < 10; ref++) { 69 } 70 #pragma omp parallel 71 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 72 #pragma omp for 73 for (int i; i < 10; i++) 74 c[i] = a[i]; 75 76 #pragma omp parallel 77 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 78 #pragma omp for 79 for (int i = 0, j = 0; i < 10; ++i) 80 c[i] = a[i]; 81 82 #pragma omp parallel 83 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 84 #pragma omp for 85 for (; ii < 10; ++ii) 86 c[ii] = a[ii]; 87 88 #pragma omp parallel 89 // expected-warning@+3 {{expression result unused}} 90 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 91 #pragma omp for 92 for (ii + 1; ii < 10; ++ii) 93 c[ii] = a[ii]; 94 95 #pragma omp parallel 96 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 97 #pragma omp for 98 for (c[ii] = 0; ii < 10; ++ii) 99 c[ii] = a[ii]; 100 101 #pragma omp parallel 102 // Ok to skip parenthesises. 103 #pragma omp for 104 for (((ii)) = 0; ii < 10; ++ii) 105 c[ii] = a[ii]; 106 107 #pragma omp parallel 108 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 109 #pragma omp for 110 for (int i = 0; i; i++) 111 c[i] = a[i]; 112 113 #pragma omp parallel 114 // expected-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 115 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}} 116 #pragma omp for 117 for (int i = 0; jj < kk; ii++) 118 c[i] = a[i]; 119 120 #pragma omp parallel 121 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 122 #pragma omp for 123 for (int i = 0; !!i; i++) 124 c[i] = a[i]; 125 126 #pragma omp parallel 127 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 128 #pragma omp for 129 for (int i = 0; i != 1; i++) 130 c[i] = a[i]; 131 132 #pragma omp parallel 133 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 134 #pragma omp for 135 for (int i = 0;; i++) 136 c[i] = a[i]; 137 138 #pragma omp parallel 139 // Ok. 140 #pragma omp for 141 for (int i = 11; i > 10; i--) 142 c[i] = a[i]; 143 144 #pragma omp parallel 145 // Ok. 146 #pragma omp for 147 for (int i = 0; i < 10; ++i) 148 c[i] = a[i]; 149 150 #pragma omp parallel 151 // Ok. 152 #pragma omp for 153 for (ii = 0; ii < 10; ++ii) 154 c[ii] = a[ii]; 155 156 #pragma omp parallel 157 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 158 #pragma omp for 159 for (ii = 0; ii < 10; ++jj) 160 c[ii] = a[jj]; 161 162 #pragma omp parallel 163 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 164 #pragma omp for 165 for (ii = 0; ii < 10; ++++ii) 166 c[ii] = a[ii]; 167 168 #pragma omp parallel 169 // Ok but undefined behavior (in general, cannot check that incr 170 // is really loop-invariant). 171 #pragma omp for 172 for (ii = 0; ii < 10; ii = ii + ii) 173 c[ii] = a[ii]; 174 175 #pragma omp parallel 176 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}} 177 #pragma omp for 178 for (ii = 0; ii < 10; ii = ii + 1.0f) 179 c[ii] = a[ii]; 180 181 #pragma omp parallel 182 // Ok - step was converted to integer type. 183 #pragma omp for 184 for (ii = 0; ii < 10; ii = ii + (int)1.1f) 185 c[ii] = a[ii]; 186 187 #pragma omp parallel 188 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 189 #pragma omp for 190 for (ii = 0; ii < 10; jj = ii + 2) 191 c[ii] = a[ii]; 192 193 #pragma omp parallel 194 // expected-warning@+3 {{relational comparison result unused}} 195 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 196 #pragma omp for 197 for (ii = 0; ii<10; jj> kk + 2) 198 c[ii] = a[ii]; 199 200 #pragma omp parallel 201 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 202 #pragma omp for 203 for (ii = 0; ii < 10;) 204 c[ii] = a[ii]; 205 206 #pragma omp parallel 207 // expected-warning@+3 {{expression result unused}} 208 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 209 #pragma omp for 210 for (ii = 0; ii < 10; !ii) 211 c[ii] = a[ii]; 212 213 #pragma omp parallel 214 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 215 #pragma omp for 216 for (ii = 0; ii < 10; ii ? ++ii : ++jj) 217 c[ii] = a[ii]; 218 219 #pragma omp parallel 220 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 221 #pragma omp for 222 for (ii = 0; ii < 10; ii = ii < 10) 223 c[ii] = a[ii]; 224 225 #pragma omp parallel 226 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 227 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 228 #pragma omp for 229 for (ii = 0; ii < 10; ii = ii + 0) 230 c[ii] = a[ii]; 231 232 #pragma omp parallel 233 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 234 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 235 #pragma omp for 236 for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45)) 237 c[ii] = a[ii]; 238 239 #pragma omp parallel 240 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 241 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 242 #pragma omp for 243 for (ii = 0; (ii) < 10; ii -= 25) 244 c[ii] = a[ii]; 245 246 #pragma omp parallel 247 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 248 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 249 #pragma omp for 250 for (ii = 0; (ii < 10); ii -= 0) 251 c[ii] = a[ii]; 252 253 #pragma omp parallel 254 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 255 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 256 #pragma omp for 257 for (ii = 0; ii > 10; (ii += 0)) 258 c[ii] = a[ii]; 259 260 #pragma omp parallel 261 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 262 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 263 #pragma omp for 264 for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii)) 265 c[ii] = a[ii]; 266 267 #pragma omp parallel 268 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 269 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 270 #pragma omp for 271 for ((ii = 0); ii > 10; (ii -= 0)) 272 c[ii] = a[ii]; 273 274 #pragma omp parallel 275 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 276 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 277 #pragma omp for 278 for (ii = 0; (ii < 10); (ii -= 0)) 279 c[ii] = a[ii]; 280 281 #pragma omp parallel 282 // expected-note@+2 {{defined as firstprivate}} 283 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be firstprivate, predetermined as private}} 284 #pragma omp for firstprivate(ii) 285 for (ii = 0; ii < 10; ii++) 286 c[ii] = a[ii]; 287 288 #pragma omp parallel 289 // expected-error@+3 {{unexpected OpenMP clause 'linear' in directive '#pragma omp for'}} 290 // expected-note@+2 {{defined as linear}} 291 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be linear, predetermined as private}} 292 #pragma omp for linear(ii) 293 for (ii = 0; ii < 10; ii++) 294 c[ii] = a[ii]; 295 296 #pragma omp parallel 297 #pragma omp for private(ii) 298 for (ii = 0; ii < 10; ii++) 299 c[ii] = a[ii]; 300 301 #pragma omp parallel 302 #pragma omp for lastprivate(ii) 303 for (ii = 0; ii < 10; ii++) 304 c[ii] = a[ii]; 305 306 #pragma omp parallel 307 { 308 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be threadprivate or thread local, predetermined as private}} 309 #pragma omp for 310 for (sii = 0; sii < 10; sii += 1) 311 c[sii] = a[sii]; 312 } 313 314 #pragma omp parallel 315 { 316 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be a variable with global storage without being explicitly marked as private}} 317 #pragma omp for 318 for (globalii = 0; globalii < 10; globalii += 1) 319 c[globalii] = a[globalii]; 320 } 321 322 #pragma omp parallel 323 { 324 // expected-error@+3 {{loop iteration variable in the associated loop of 'omp for' directive may not be a variable with global storage without being explicitly marked as private}} 325 #pragma omp for collapse(2) 326 for (ii = 0; ii < 10; ii += 1) 327 for (globalii = 0; globalii < 10; globalii += 1) 328 c[globalii] += a[globalii] + ii; 329 } 330 331 #pragma omp parallel 332 // expected-error@+2 {{statement after '#pragma omp for' must be a for loop}} 333 #pragma omp for 334 for (auto &item : a) { 335 item = item + 1; 336 } 337 338 #pragma omp parallel 339 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 340 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}} 341 #pragma omp for 342 for (unsigned i = 9; i < 10; i--) { 343 c[i] = a[i] + b[i]; 344 } 345 346 int(*lb)[4] = nullptr; 347 #pragma omp parallel 348 #pragma omp for 349 for (int(*p)[4] = lb; p < lb + 8; ++p) { 350 } 351 352 #pragma omp parallel 353 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 354 #pragma omp for 355 for (int a{0}; a < 10; ++a) { 356 } 357 358 return 0; 359 } 360 361 // Iterators allowed in openmp for-loops. 362 namespace std { 363 struct random_access_iterator_tag {}; 364 template <class Iter> 365 struct iterator_traits { 366 typedef typename Iter::difference_type difference_type; 367 typedef typename Iter::iterator_category iterator_category; 368 }; 369 template <class Iter> 370 typename iterator_traits<Iter>::difference_type 371 distance(Iter first, Iter last) { return first - last; } 372 } 373 class Iter0 { 374 public: 375 Iter0() {} 376 Iter0(const Iter0 &) {} 377 Iter0 operator++() { return *this; } 378 Iter0 operator--() { return *this; } 379 bool operator<(Iter0 a) { return true; } 380 }; 381 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}} 382 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}} 383 int operator-(Iter0 a, Iter0 b) { return 0; } 384 class Iter1 { 385 public: 386 Iter1(float f = 0.0f, double d = 0.0) {} 387 Iter1(const Iter1 &) {} 388 Iter1 operator++() { return *this; } 389 Iter1 operator--() { return *this; } 390 bool operator<(Iter1 a) { return true; } 391 bool operator>=(Iter1 a) { return false; } 392 }; 393 class GoodIter { 394 public: 395 GoodIter() {} 396 GoodIter(const GoodIter &) {} 397 GoodIter(int fst, int snd) {} 398 GoodIter &operator=(const GoodIter &that) { return *this; } 399 GoodIter &operator=(const Iter0 &that) { return *this; } 400 GoodIter &operator+=(int x) { return *this; } 401 GoodIter &operator-=(int x) { return *this; } 402 explicit GoodIter(void *) {} 403 GoodIter operator++() { return *this; } 404 GoodIter operator--() { return *this; } 405 bool operator!() { return true; } 406 bool operator<(GoodIter a) { return true; } 407 bool operator<=(GoodIter a) { return true; } 408 bool operator>=(GoodIter a) { return false; } 409 typedef int difference_type; 410 typedef std::random_access_iterator_tag iterator_category; 411 }; 412 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}} 413 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 414 int operator-(GoodIter a, GoodIter b) { return 0; } 415 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}} 416 GoodIter operator-(GoodIter a) { return a; } 417 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}} 418 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 419 GoodIter operator-(GoodIter a, int v) { return GoodIter(); } 420 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}} 421 GoodIter operator+(GoodIter a, int v) { return GoodIter(); } 422 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}} 423 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}} 424 GoodIter operator-(int v, GoodIter a) { return GoodIter(); } 425 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}} 426 GoodIter operator+(int v, GoodIter a) { return GoodIter(); } 427 428 int test_with_random_access_iterator() { 429 GoodIter begin, end; 430 Iter0 begin0, end0; 431 #pragma omp parallel 432 #pragma omp for 433 for (GoodIter I = begin; I < end; ++I) 434 ++I; 435 #pragma omp parallel 436 // expected-error@+2 {{variable must be of integer or random access iterator type}} 437 #pragma omp for 438 for (GoodIter &I = begin; I < end; ++I) 439 ++I; 440 #pragma omp parallel 441 #pragma omp for 442 for (GoodIter I = begin; I >= end; --I) 443 ++I; 444 #pragma omp parallel 445 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 446 #pragma omp for 447 for (GoodIter I(begin); I < end; ++I) 448 ++I; 449 #pragma omp parallel 450 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 451 #pragma omp for 452 for (GoodIter I(nullptr); I < end; ++I) 453 ++I; 454 #pragma omp parallel 455 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 456 #pragma omp for 457 for (GoodIter I(0); I < end; ++I) 458 ++I; 459 #pragma omp parallel 460 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 461 #pragma omp for 462 for (GoodIter I(1, 2); I < end; ++I) 463 ++I; 464 #pragma omp parallel 465 #pragma omp for 466 for (begin = GoodIter(0); begin < end; ++begin) 467 ++begin; 468 // expected-error@+4 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}} 469 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 470 #pragma omp parallel 471 #pragma omp for 472 for (begin = begin0; begin < end; ++begin) 473 ++begin; 474 #pragma omp parallel 475 // expected-error@+2 {{initialization clause of OpenMP for loop must be of the form 'var = init' or 'T var = init'}} 476 #pragma omp for 477 for (++begin; begin < end; ++begin) 478 ++begin; 479 #pragma omp parallel 480 #pragma omp for 481 for (begin = end; begin < end; ++begin) 482 ++begin; 483 #pragma omp parallel 484 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 485 #pragma omp for 486 for (GoodIter I = begin; I - I; ++I) 487 ++I; 488 #pragma omp parallel 489 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 490 #pragma omp for 491 for (GoodIter I = begin; begin < end; ++I) 492 ++I; 493 #pragma omp parallel 494 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 495 #pragma omp for 496 for (GoodIter I = begin; !I; ++I) 497 ++I; 498 #pragma omp parallel 499 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 500 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 501 #pragma omp for 502 for (GoodIter I = begin; I >= end; I = I + 1) 503 ++I; 504 #pragma omp parallel 505 #pragma omp for 506 for (GoodIter I = begin; I >= end; I = I - 1) 507 ++I; 508 #pragma omp parallel 509 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 510 #pragma omp for 511 for (GoodIter I = begin; I >= end; I = -I) 512 ++I; 513 #pragma omp parallel 514 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 515 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 516 #pragma omp for 517 for (GoodIter I = begin; I >= end; I = 2 + I) 518 ++I; 519 #pragma omp parallel 520 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 521 #pragma omp for 522 for (GoodIter I = begin; I >= end; I = 2 - I) 523 ++I; 524 // In the following example, we cannot update the loop variable using '+=' 525 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 526 #pragma omp parallel 527 #pragma omp for 528 for (Iter0 I = begin0; I < end0; ++I) 529 ++I; 530 #pragma omp parallel 531 // Initializer is constructor without params. 532 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 533 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 534 #pragma omp for 535 for (Iter0 I; I < end0; ++I) 536 ++I; 537 Iter1 begin1, end1; 538 // expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'Iter1')}} 539 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 540 #pragma omp parallel 541 #pragma omp for 542 for (Iter1 I = begin1; I < end1; ++I) 543 ++I; 544 #pragma omp parallel 545 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 546 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 547 #pragma omp for 548 for (Iter1 I = begin1; I >= end1; ++I) 549 ++I; 550 #pragma omp parallel 551 // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'Iter1')}} 552 // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 553 // Initializer is constructor with all default params. 554 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 555 #pragma omp for 556 for (Iter1 I; I < end1; ++I) { 557 } 558 return 0; 559 } 560 561 template <typename IT, int ST> 562 class TC { 563 public: 564 int dotest_lt(IT begin, IT end) { 565 #pragma omp parallel 566 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 567 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 568 #pragma omp for 569 for (IT I = begin; I < end; I = I + ST) { 570 ++I; 571 } 572 #pragma omp parallel 573 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 574 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 575 #pragma omp for 576 for (IT I = begin; I <= end; I += ST) { 577 ++I; 578 } 579 #pragma omp parallel 580 #pragma omp for 581 for (IT I = begin; I < end; ++I) { 582 ++I; 583 } 584 } 585 586 static IT step() { 587 return IT(ST); 588 } 589 }; 590 template <typename IT, int ST = 0> 591 int dotest_gt(IT begin, IT end) { 592 #pragma omp parallel 593 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 594 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 595 #pragma omp for 596 for (IT I = begin; I >= end; I = I + ST) { 597 ++I; 598 } 599 #pragma omp parallel 600 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 601 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 602 #pragma omp for 603 for (IT I = begin; I >= end; I += ST) { 604 ++I; 605 } 606 607 #pragma omp parallel 608 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 609 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 610 #pragma omp for 611 for (IT I = begin; I >= end; ++I) { 612 ++I; 613 } 614 615 #pragma omp parallel 616 #pragma omp for 617 for (IT I = begin; I < end; I += TC<int, ST>::step()) { 618 ++I; 619 } 620 } 621 622 void test_with_template() { 623 GoodIter begin, end; 624 TC<GoodIter, 100> t1; 625 TC<GoodIter, -100> t2; 626 t1.dotest_lt(begin, end); 627 t2.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}} 628 dotest_gt(begin, end); // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}} 629 dotest_gt<unsigned, -10>(0, 100); // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, -10>' requested here}} 630 } 631 632 void test_loop_break() { 633 const int N = 100; 634 float a[N], b[N], c[N]; 635 #pragma omp parallel 636 #pragma omp for 637 for (int i = 0; i < 10; i++) { 638 c[i] = a[i] + b[i]; 639 for (int j = 0; j < 10; ++j) { 640 if (a[i] > b[j]) 641 break; // OK in nested loop 642 } 643 switch (i) { 644 case 1: 645 b[i]++; 646 break; 647 default: 648 break; 649 } 650 if (c[i] > 10) 651 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 652 653 if (c[i] > 11) 654 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 655 } 656 657 #pragma omp parallel 658 #pragma omp for 659 for (int i = 0; i < 10; i++) { 660 for (int j = 0; j < 10; j++) { 661 c[i] = a[i] + b[i]; 662 if (c[i] > 10) { 663 if (c[i] < 20) { 664 break; // OK 665 } 666 } 667 } 668 } 669 } 670 671 void test_loop_eh() { 672 const int N = 100; 673 float a[N], b[N], c[N]; 674 #pragma omp parallel 675 #pragma omp for 676 for (int i = 0; i < 10; i++) { 677 c[i] = a[i] + b[i]; 678 try { 679 for (int j = 0; j < 10; ++j) { 680 if (a[i] > b[j]) 681 throw a[i]; 682 } 683 throw a[i]; 684 } catch (float f) { 685 if (f > 0.1) 686 throw a[i]; 687 return; // expected-error {{cannot return from OpenMP region}} 688 } 689 switch (i) { 690 case 1: 691 b[i]++; 692 break; 693 default: 694 break; 695 } 696 for (int j = 0; j < 10; j++) { 697 if (c[i] > 10) 698 throw c[i]; 699 } 700 } 701 if (c[9] > 10) 702 throw c[9]; // OK 703 704 #pragma omp parallel 705 #pragma omp for 706 for (int i = 0; i < 10; ++i) { 707 struct S { 708 void g() { throw 0; } 709 }; 710 } 711 } 712 713 void test_loop_firstprivate_lastprivate() { 714 S s(4); 715 #pragma omp parallel 716 #pragma omp for lastprivate(s) firstprivate(s) 717 for (int i = 0; i < 16; ++i) 718 ; 719 } 720 721 void test_ordered() { 722 #pragma omp parallel 723 #pragma omp for ordered ordered // expected-error {{directive '#pragma omp for' cannot contain more than one 'ordered' clause}} 724 for (int i = 0; i < 16; ++i) 725 ; 726 } 727 728 void test_nowait() { 729 #pragma omp parallel 730 #pragma omp for nowait nowait // expected-error {{directive '#pragma omp for' cannot contain more than one 'nowait' clause}} 731 for (int i = 0; i < 16; ++i) 732 ; 733 } 734
