1 // RUN: %clang_cc1 -fsyntax-only -fopenmp -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 // expected-note@+1 {{defined as threadprivate or thread local}} 14 #pragma omp threadprivate(sii) 15 static int globalii; 16 17 // Currently, we cannot use "0" for global register variables. 18 // register int reg0 __asm__("0"); 19 int reg0; 20 21 int test_iteration_spaces() { 22 const int N = 100; 23 float a[N], b[N], c[N]; 24 int ii, jj, kk; 25 float fii; 26 double dii; 27 register int reg; // expected-warning {{'register' storage class specifier is deprecated}} 28 #pragma omp parallel 29 #pragma omp for 30 for (int i = 0; i < 10; i += 1) { 31 c[i] = a[i] + b[i]; 32 } 33 #pragma omp parallel 34 #pragma omp for 35 for (char i = 0; i < 10; i++) { 36 c[i] = a[i] + b[i]; 37 } 38 #pragma omp parallel 39 #pragma omp for 40 for (char i = 0; i < 10; i += '\1') { 41 c[i] = a[i] + b[i]; 42 } 43 #pragma omp parallel 44 #pragma omp for 45 for (long long i = 0; i < 10; i++) { 46 c[i] = a[i] + b[i]; 47 } 48 #pragma omp parallel 49 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}} 50 #pragma omp for 51 for (long long i = 0; i < 10; i += 1.5) { 52 c[i] = a[i] + b[i]; 53 } 54 #pragma omp parallel 55 #pragma omp for 56 for (long long i = 0; i < 'z'; i += 1u) { 57 c[i] = a[i] + b[i]; 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 (float 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 (double fi = 0; fi < 10.0; fi++) { 69 c[(int)fi] = a[(int)fi] + b[(int)fi]; 70 } 71 #pragma omp parallel 72 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 73 #pragma omp for 74 for (int &ref = ii; ref < 10; ref++) { 75 } 76 #pragma omp parallel 77 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 78 #pragma omp for 79 for (int i; i < 10; i++) 80 c[i] = a[i]; 81 82 #pragma omp parallel 83 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 84 #pragma omp for 85 for (int i = 0, j = 0; i < 10; ++i) 86 c[i] = a[i]; 87 88 #pragma omp parallel 89 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 90 #pragma omp for 91 for (; ii < 10; ++ii) 92 c[ii] = a[ii]; 93 94 #pragma omp parallel 95 // expected-warning@+3 {{expression result unused}} 96 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 97 #pragma omp for 98 for (ii + 1; ii < 10; ++ii) 99 c[ii] = a[ii]; 100 101 #pragma omp parallel 102 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 103 #pragma omp for 104 for (c[ii] = 0; ii < 10; ++ii) 105 c[ii] = a[ii]; 106 107 #pragma omp parallel 108 // Ok to skip parenthesises. 109 #pragma omp for 110 for (((ii)) = 0; ii < 10; ++ii) 111 c[ii] = a[ii]; 112 113 #pragma omp parallel 114 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 115 #pragma omp for 116 for (int i = 0; i; i++) 117 c[i] = a[i]; 118 119 #pragma omp parallel 120 // expected-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 121 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}} 122 #pragma omp for 123 for (int i = 0; jj < kk; ii++) 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; 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 != 1; i++) 136 c[i] = a[i]; 137 138 #pragma omp parallel 139 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 140 #pragma omp for 141 for (int i = 0;; i++) 142 c[i] = a[i]; 143 144 #pragma omp parallel 145 // Ok. 146 #pragma omp for 147 for (int i = 11; i > 10; i--) 148 c[i] = a[i]; 149 150 #pragma omp parallel 151 // Ok. 152 #pragma omp for 153 for (int i = 0; i < 10; ++i) 154 c[i] = a[i]; 155 156 #pragma omp parallel 157 // Ok. 158 #pragma omp for 159 for (ii = 0; ii < 10; ++ii) 160 c[ii] = a[ii]; 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; ++jj) 166 c[ii] = a[jj]; 167 168 #pragma omp parallel 169 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 170 #pragma omp for 171 for (ii = 0; ii < 10; ++++ii) 172 c[ii] = a[ii]; 173 174 #pragma omp parallel 175 // Ok but undefined behavior (in general, cannot check that incr 176 // is really loop-invariant). 177 #pragma omp for 178 for (ii = 0; ii < 10; ii = ii + ii) 179 c[ii] = a[ii]; 180 181 #pragma omp parallel 182 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}} 183 #pragma omp for 184 for (ii = 0; ii < 10; ii = ii + 1.0f) 185 c[ii] = a[ii]; 186 187 #pragma omp parallel 188 // Ok - step was converted to integer type. 189 #pragma omp for 190 for (ii = 0; ii < 10; ii = ii + (int)1.1f) 191 c[ii] = a[ii]; 192 193 #pragma omp parallel 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 = ii + 2) 197 c[ii] = a[ii]; 198 199 #pragma omp parallel 200 // expected-warning@+3 {{relational comparison result unused}} 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; jj> kk + 2) 204 c[ii] = a[ii]; 205 206 #pragma omp parallel 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;) 210 c[ii] = a[ii]; 211 212 #pragma omp parallel 213 // expected-warning@+3 {{expression result unused}} 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) 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 : ++jj) 223 c[ii] = a[ii]; 224 225 #pragma omp parallel 226 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 227 #pragma omp for 228 for (ii = 0; ii < 10; ii = ii < 10) 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 + 0) 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 = ii + (int)(0.8 - 0.45)) 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 -= 25) 250 c[ii] = a[ii]; 251 252 #pragma omp parallel 253 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 254 // expected-error@+2 {{increment expression must cause 'ii' to increase 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 negative due to this condition}} 261 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 262 #pragma omp for 263 for (ii = 0; ii > 10; (ii += 0)) 264 c[ii] = a[ii]; 265 266 #pragma omp parallel 267 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 268 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 269 #pragma omp for 270 for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii)) 271 c[ii] = a[ii]; 272 273 #pragma omp parallel 274 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 275 // expected-error@+2 {{increment expression must cause 'ii' to decrease 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@+3 {{loop step is expected to be positive due to this condition}} 282 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 283 #pragma omp for 284 for (ii = 0; (ii < 10); (ii -= 0)) 285 c[ii] = a[ii]; 286 287 #pragma omp parallel 288 // expected-note@+2 {{defined as firstprivate}} 289 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be firstprivate, predetermined as private}} 290 #pragma omp for firstprivate(ii) 291 for (ii = 0; ii < 10; ii++) 292 c[ii] = a[ii]; 293 294 #pragma omp parallel 295 // expected-note@+2 {{defined as linear}} 296 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be linear, predetermined as private}} 297 #pragma omp for linear(ii) 298 for (ii = 0; ii < 10; ii++) 299 c[ii] = a[ii]; 300 301 #pragma omp parallel 302 #pragma omp for private(ii) 303 for (ii = 0; ii < 10; ii++) 304 c[ii] = a[ii]; 305 306 #pragma omp parallel 307 #pragma omp for lastprivate(ii) 308 for (ii = 0; ii < 10; ii++) 309 c[ii] = a[ii]; 310 311 #pragma omp parallel 312 { 313 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be threadprivate or thread local, predetermined as private}} 314 #pragma omp for 315 for (sii = 0; sii < 10; sii += 1) 316 c[sii] = a[sii]; 317 } 318 319 #pragma omp parallel 320 { 321 #pragma omp for 322 for (reg0 = 0; reg0 < 10; reg0 += 1) 323 c[reg0] = a[reg0]; 324 } 325 326 #pragma omp parallel 327 { 328 #pragma omp for 329 for (reg = 0; reg < 10; reg += 1) 330 c[reg] = a[reg]; 331 } 332 333 #pragma omp parallel 334 { 335 #pragma omp for 336 for (globalii = 0; globalii < 10; globalii += 1) 337 c[globalii] = a[globalii]; 338 } 339 340 #pragma omp parallel 341 { 342 #pragma omp for collapse(2) 343 for (ii = 0; ii < 10; ii += 1) 344 for (globalii = 0; globalii < 10; globalii += 1) 345 c[globalii] += a[globalii] + ii; 346 } 347 348 #pragma omp parallel 349 // expected-error@+2 {{statement after '#pragma omp for' must be a for loop}} 350 #pragma omp for 351 for (auto &item : a) { 352 item = item + 1; 353 } 354 355 #pragma omp parallel 356 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 357 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}} 358 #pragma omp for 359 for (unsigned i = 9; i < 10; i--) { 360 c[i] = a[i] + b[i]; 361 } 362 363 int(*lb)[4] = nullptr; 364 #pragma omp parallel 365 #pragma omp for 366 for (int(*p)[4] = lb; p < lb + 8; ++p) { 367 } 368 369 #pragma omp parallel 370 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 371 #pragma omp for 372 for (int a{0}; a < 10; ++a) { 373 } 374 375 return 0; 376 } 377 378 // Iterators allowed in openmp for-loops. 379 namespace std { 380 struct random_access_iterator_tag {}; 381 template <class Iter> 382 struct iterator_traits { 383 typedef typename Iter::difference_type difference_type; 384 typedef typename Iter::iterator_category iterator_category; 385 }; 386 template <class Iter> 387 typename iterator_traits<Iter>::difference_type 388 distance(Iter first, Iter last) { return first - last; } 389 } 390 class Iter0 { 391 public: 392 Iter0() {} 393 Iter0(const Iter0 &) {} 394 Iter0 operator++() { return *this; } 395 Iter0 operator--() { return *this; } 396 bool operator<(Iter0 a) { return true; } 397 }; 398 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}} 399 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}} 400 int operator-(Iter0 a, Iter0 b) { return 0; } 401 class Iter1 { 402 public: 403 Iter1(float f = 0.0f, double d = 0.0) {} 404 Iter1(const Iter1 &) {} 405 Iter1 operator++() { return *this; } 406 Iter1 operator--() { return *this; } 407 bool operator<(Iter1 a) { return true; } 408 bool operator>=(Iter1 a) { return false; } 409 }; 410 class GoodIter { 411 public: 412 GoodIter() {} 413 GoodIter(const GoodIter &) {} 414 GoodIter(int fst, int snd) {} 415 GoodIter &operator=(const GoodIter &that) { return *this; } 416 GoodIter &operator=(const Iter0 &that) { return *this; } 417 GoodIter &operator+=(int x) { return *this; } 418 GoodIter &operator-=(int x) { return *this; } 419 explicit GoodIter(void *) {} 420 GoodIter operator++() { return *this; } 421 GoodIter operator--() { return *this; } 422 bool operator!() { return true; } 423 bool operator<(GoodIter a) { return true; } 424 bool operator<=(GoodIter a) { return true; } 425 bool operator>=(GoodIter a) { return false; } 426 typedef int difference_type; 427 typedef std::random_access_iterator_tag iterator_category; 428 }; 429 // expected-note@+2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 2nd argument}} 430 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 431 int operator-(GoodIter a, GoodIter b) { return 0; } 432 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}} 433 GoodIter operator-(GoodIter a) { return a; } 434 // expected-note@+2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 2nd argument}} 435 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 436 GoodIter operator-(GoodIter a, int v) { return GoodIter(); } 437 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}} 438 GoodIter operator+(GoodIter a, int v) { return GoodIter(); } 439 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}} 440 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}} 441 GoodIter operator-(int v, GoodIter a) { return GoodIter(); } 442 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}} 443 GoodIter operator+(int v, GoodIter a) { return GoodIter(); } 444 445 int test_with_random_access_iterator() { 446 GoodIter begin, end; 447 Iter0 begin0, end0; 448 #pragma omp parallel 449 #pragma omp for 450 for (GoodIter I = begin; I < end; ++I) 451 ++I; 452 #pragma omp parallel 453 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 454 #pragma omp for 455 for (GoodIter &I = begin; I < end; ++I) 456 ++I; 457 #pragma omp parallel 458 #pragma omp for 459 for (GoodIter I = begin; I >= end; --I) 460 ++I; 461 #pragma omp parallel 462 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 463 #pragma omp for 464 for (GoodIter I(begin); I < end; ++I) 465 ++I; 466 #pragma omp parallel 467 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 468 #pragma omp for 469 for (GoodIter I(nullptr); I < end; ++I) 470 ++I; 471 #pragma omp parallel 472 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 473 #pragma omp for 474 for (GoodIter I(0); I < end; ++I) 475 ++I; 476 #pragma omp parallel 477 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 478 #pragma omp for 479 for (GoodIter I(1, 2); I < end; ++I) 480 ++I; 481 #pragma omp parallel 482 #pragma omp for 483 for (begin = GoodIter(0); begin < end; ++begin) 484 ++begin; 485 // expected-error@+4 {{invalid operands to binary expression ('GoodIter' and 'Iter0')}} 486 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 487 #pragma omp parallel 488 #pragma omp for 489 for (begin = begin0; begin < end; ++begin) 490 ++begin; 491 #pragma omp parallel 492 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 493 #pragma omp for 494 for (++begin; begin < end; ++begin) 495 ++begin; 496 #pragma omp parallel 497 #pragma omp for 498 for (begin = end; begin < end; ++begin) 499 ++begin; 500 #pragma omp parallel 501 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 502 #pragma omp for 503 for (GoodIter I = begin; I - I; ++I) 504 ++I; 505 #pragma omp parallel 506 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 507 #pragma omp for 508 for (GoodIter I = begin; begin < end; ++I) 509 ++I; 510 #pragma omp parallel 511 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 512 #pragma omp for 513 for (GoodIter I = begin; !I; ++I) 514 ++I; 515 #pragma omp parallel 516 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 517 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 518 #pragma omp for 519 for (GoodIter I = begin; I >= end; I = I + 1) 520 ++I; 521 #pragma omp parallel 522 #pragma omp for 523 for (GoodIter I = begin; I >= end; I = I - 1) 524 ++I; 525 #pragma omp parallel 526 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 527 #pragma omp for 528 for (GoodIter I = begin; I >= end; I = -I) 529 ++I; 530 #pragma omp parallel 531 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 532 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 533 #pragma omp for 534 for (GoodIter I = begin; I >= end; I = 2 + I) 535 ++I; 536 #pragma omp parallel 537 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 538 #pragma omp for 539 for (GoodIter I = begin; I >= end; I = 2 - I) 540 ++I; 541 // In the following example, we cannot update the loop variable using '+=' 542 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 543 #pragma omp parallel 544 #pragma omp for 545 for (Iter0 I = begin0; I < end0; ++I) 546 ++I; 547 #pragma omp parallel 548 // Initializer is constructor without params. 549 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 550 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 551 #pragma omp for 552 for (Iter0 I; I < end0; ++I) 553 ++I; 554 Iter1 begin1, end1; 555 // expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'Iter1')}} 556 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 557 #pragma omp parallel 558 #pragma omp for 559 for (Iter1 I = begin1; I < end1; ++I) 560 ++I; 561 #pragma omp parallel 562 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 563 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 564 #pragma omp for 565 for (Iter1 I = begin1; I >= end1; ++I) 566 ++I; 567 #pragma omp parallel 568 // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}} 569 // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 570 // Initializer is constructor with all default params. 571 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 572 #pragma omp for 573 for (Iter1 I; I < end1; ++I) { 574 } 575 return 0; 576 } 577 578 template <typename IT, int ST> 579 class TC { 580 public: 581 int dotest_lt(IT begin, IT end) { 582 #pragma omp parallel 583 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 584 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 585 #pragma omp for 586 for (IT I = begin; I < end; I = I + ST) { 587 ++I; 588 } 589 #pragma omp parallel 590 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 591 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 592 #pragma omp for 593 for (IT I = begin; I <= end; I += ST) { 594 ++I; 595 } 596 #pragma omp parallel 597 #pragma omp for 598 for (IT I = begin; I < end; ++I) { 599 ++I; 600 } 601 } 602 603 static IT step() { 604 return IT(ST); 605 } 606 }; 607 template <typename IT, int ST = 0> 608 int dotest_gt(IT begin, IT end) { 609 #pragma omp parallel 610 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 611 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 612 #pragma omp for 613 for (IT I = begin; I >= end; I = I + ST) { 614 ++I; 615 } 616 #pragma omp parallel 617 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 618 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 619 #pragma omp for 620 for (IT I = begin; I >= end; I += ST) { 621 ++I; 622 } 623 624 #pragma omp parallel 625 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 626 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 627 #pragma omp for 628 for (IT I = begin; I >= end; ++I) { 629 ++I; 630 } 631 632 #pragma omp parallel 633 #pragma omp for 634 for (IT I = begin; I < end; I += TC<int, ST>::step()) { 635 ++I; 636 } 637 } 638 639 void test_with_template() { 640 GoodIter begin, end; 641 TC<GoodIter, 100> t1; 642 TC<GoodIter, -100> t2; 643 t1.dotest_lt(begin, end); 644 t2.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}} 645 dotest_gt(begin, end); // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}} 646 dotest_gt<unsigned, -10>(0, 100); // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, -10>' requested here}} 647 } 648 649 void test_loop_break() { 650 const int N = 100; 651 float a[N], b[N], c[N]; 652 #pragma omp parallel 653 #pragma omp for 654 for (int i = 0; i < 10; i++) { 655 c[i] = a[i] + b[i]; 656 for (int j = 0; j < 10; ++j) { 657 if (a[i] > b[j]) 658 break; // OK in nested loop 659 } 660 switch (i) { 661 case 1: 662 b[i]++; 663 break; 664 default: 665 break; 666 } 667 if (c[i] > 10) 668 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 669 670 if (c[i] > 11) 671 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 672 } 673 674 #pragma omp parallel 675 #pragma omp for 676 for (int i = 0; i < 10; i++) { 677 for (int j = 0; j < 10; j++) { 678 c[i] = a[i] + b[i]; 679 if (c[i] > 10) { 680 if (c[i] < 20) { 681 break; // OK 682 } 683 } 684 } 685 } 686 } 687 688 void test_loop_eh() { 689 const int N = 100; 690 float a[N], b[N], c[N]; 691 #pragma omp parallel 692 #pragma omp for 693 for (int i = 0; i < 10; i++) { 694 c[i] = a[i] + b[i]; 695 try { 696 for (int j = 0; j < 10; ++j) { 697 if (a[i] > b[j]) 698 throw a[i]; 699 } 700 throw a[i]; 701 } catch (float f) { 702 if (f > 0.1) 703 throw a[i]; 704 return; // expected-error {{cannot return from OpenMP region}} 705 } 706 switch (i) { 707 case 1: 708 b[i]++; 709 break; 710 default: 711 break; 712 } 713 for (int j = 0; j < 10; j++) { 714 if (c[i] > 10) 715 throw c[i]; 716 } 717 } 718 if (c[9] > 10) 719 throw c[9]; // OK 720 721 #pragma omp parallel 722 #pragma omp for 723 for (int i = 0; i < 10; ++i) { 724 struct S { 725 void g() { throw 0; } 726 }; 727 } 728 } 729 730 void test_loop_firstprivate_lastprivate() { 731 S s(4); 732 #pragma omp parallel 733 #pragma omp for lastprivate(s) firstprivate(s) 734 for (int i = 0; i < 16; ++i) 735 ; 736 } 737 738 void test_ordered() { 739 #pragma omp parallel 740 #pragma omp for ordered ordered // expected-error {{directive '#pragma omp for' cannot contain more than one 'ordered' clause}} 741 for (int i = 0; i < 16; ++i) 742 ; 743 } 744 745 void test_nowait() { 746 #pragma omp parallel 747 #pragma omp for nowait nowait // expected-error {{directive '#pragma omp for' cannot contain more than one 'nowait' clause}} 748 for (int i = 0; i < 16; ++i) 749 ; 750 } 751