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 #pragma omp threadprivate(sii) 14 static int globalii; 15 16 // Currently, we cannot use "0" for global register variables. 17 // register int reg0 __asm__("0"); 18 int reg0; 19 20 int test_iteration_spaces() { 21 const int N = 100; 22 float a[N], b[N], c[N]; 23 int ii, jj, kk; 24 float fii; 25 double dii; 26 register int reg; // expected-warning {{'register' storage class specifier is deprecated}} 27 #pragma omp parallel 28 #pragma omp for 29 for (int i = 0; i < 10; i += 1) { 30 c[i] = a[i] + b[i]; 31 } 32 #pragma omp parallel 33 #pragma omp for 34 for (char i = 0; i < 10; i++) { 35 c[i] = a[i] + b[i]; 36 } 37 #pragma omp parallel 38 #pragma omp for 39 for (char i = 0; i < 10; i += '\1') { 40 c[i] = a[i] + b[i]; 41 } 42 #pragma omp parallel 43 #pragma omp for 44 for (long long i = 0; i < 10; i++) { 45 c[i] = a[i] + b[i]; 46 } 47 #pragma omp parallel 48 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}} 49 #pragma omp for 50 for (long long i = 0; i < 10; i += 1.5) { 51 c[i] = a[i] + b[i]; 52 } 53 #pragma omp parallel 54 #pragma omp for 55 for (long long i = 0; i < 'z'; i += 1u) { 56 c[i] = a[i] + b[i]; 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 (float 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 (double fi = 0; fi < 10.0; fi++) { 68 c[(int)fi] = a[(int)fi] + b[(int)fi]; 69 } 70 #pragma omp parallel 71 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 72 #pragma omp for 73 for (int &ref = ii; ref < 10; ref++) { 74 } 75 #pragma omp parallel 76 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 77 #pragma omp for 78 for (int i; i < 10; i++) 79 c[i] = a[i]; 80 81 #pragma omp parallel 82 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 83 #pragma omp for 84 for (int i = 0, j = 0; i < 10; ++i) 85 c[i] = a[i]; 86 87 #pragma omp parallel 88 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 89 #pragma omp for 90 for (; ii < 10; ++ii) 91 c[ii] = a[ii]; 92 93 #pragma omp parallel 94 // expected-warning@+3 {{expression result unused}} 95 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 96 #pragma omp for 97 for (ii + 1; ii < 10; ++ii) 98 c[ii] = a[ii]; 99 100 #pragma omp parallel 101 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 102 #pragma omp for 103 for (c[ii] = 0; ii < 10; ++ii) 104 c[ii] = a[ii]; 105 106 #pragma omp parallel 107 // Ok to skip parenthesises. 108 #pragma omp for 109 for (((ii)) = 0; ii < 10; ++ii) 110 c[ii] = a[ii]; 111 112 #pragma omp parallel 113 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 114 #pragma omp for 115 for (int i = 0; i; i++) 116 c[i] = a[i]; 117 118 #pragma omp parallel 119 // expected-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 120 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}} 121 #pragma omp for 122 for (int i = 0; jj < kk; ii++) 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; 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 != 1; i++) 135 c[i] = a[i]; 136 137 #pragma omp parallel 138 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 139 #pragma omp for 140 for (int i = 0;; i++) 141 c[i] = a[i]; 142 143 #pragma omp parallel 144 // Ok. 145 #pragma omp for 146 for (int i = 11; i > 10; i--) 147 c[i] = a[i]; 148 149 #pragma omp parallel 150 // Ok. 151 #pragma omp for 152 for (int i = 0; i < 10; ++i) 153 c[i] = a[i]; 154 155 #pragma omp parallel 156 // Ok. 157 #pragma omp for 158 for (ii = 0; ii < 10; ++ii) 159 c[ii] = a[ii]; 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; ++jj) 165 c[ii] = a[jj]; 166 167 #pragma omp parallel 168 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 169 #pragma omp for 170 for (ii = 0; ii < 10; ++++ii) 171 c[ii] = a[ii]; 172 173 #pragma omp parallel 174 // Ok but undefined behavior (in general, cannot check that incr 175 // is really loop-invariant). 176 #pragma omp for 177 for (ii = 0; ii < 10; ii = ii + ii) 178 c[ii] = a[ii]; 179 180 #pragma omp parallel 181 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}} 182 #pragma omp for 183 for (ii = 0; ii < 10; ii = ii + 1.0f) 184 c[ii] = a[ii]; 185 186 #pragma omp parallel 187 // Ok - step was converted to integer type. 188 #pragma omp for 189 for (ii = 0; ii < 10; ii = ii + (int)1.1f) 190 c[ii] = a[ii]; 191 192 #pragma omp parallel 193 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 194 #pragma omp for 195 for (ii = 0; ii < 10; jj = ii + 2) 196 c[ii] = a[ii]; 197 198 #pragma omp parallel 199 // expected-warning@+3 {{relational comparison result unused}} 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; jj> kk + 2) 203 c[ii] = a[ii]; 204 205 #pragma omp parallel 206 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 207 #pragma omp for 208 for (ii = 0; ii < 10;) 209 c[ii] = a[ii]; 210 211 #pragma omp parallel 212 // expected-warning@+3 {{expression result unused}} 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) 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 : ++jj) 222 c[ii] = a[ii]; 223 224 #pragma omp parallel 225 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 226 #pragma omp for 227 for (ii = 0; ii < 10; ii = ii < 10) 228 c[ii] = a[ii]; 229 230 #pragma omp parallel 231 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 232 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 233 #pragma omp for 234 for (ii = 0; ii < 10; ii = ii + 0) 235 c[ii] = a[ii]; 236 237 #pragma omp parallel 238 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 239 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 240 #pragma omp for 241 for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45)) 242 c[ii] = a[ii]; 243 244 #pragma omp parallel 245 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 246 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 247 #pragma omp for 248 for (ii = 0; (ii) < 10; ii -= 25) 249 c[ii] = a[ii]; 250 251 #pragma omp parallel 252 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 253 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 254 #pragma omp for 255 for (ii = 0; (ii < 10); ii -= 0) 256 c[ii] = a[ii]; 257 258 #pragma omp parallel 259 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 260 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 261 #pragma omp for 262 for (ii = 0; ii > 10; (ii += 0)) 263 c[ii] = a[ii]; 264 265 #pragma omp parallel 266 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 267 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 268 #pragma omp for 269 for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii)) 270 c[ii] = a[ii]; 271 272 #pragma omp parallel 273 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 274 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 275 #pragma omp for 276 for ((ii = 0); ii > 10; (ii -= 0)) 277 c[ii] = a[ii]; 278 279 #pragma omp parallel 280 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 281 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 282 #pragma omp for 283 for (ii = 0; (ii < 10); (ii -= 0)) 284 c[ii] = a[ii]; 285 286 #pragma omp parallel 287 // expected-note@+2 {{defined as firstprivate}} 288 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be firstprivate, predetermined as private}} 289 #pragma omp for firstprivate(ii) 290 for (ii = 0; ii < 10; ii++) 291 c[ii] = a[ii]; 292 293 #pragma omp parallel 294 // expected-note@+2 {{defined as linear}} 295 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be linear, predetermined as private}} 296 #pragma omp for linear(ii) 297 for (ii = 0; ii < 10; ii++) 298 c[ii] = a[ii]; 299 300 #pragma omp parallel 301 #pragma omp for private(ii) 302 for (ii = 0; ii < 10; ii++) 303 c[ii] = a[ii]; 304 305 #pragma omp parallel 306 #pragma omp for lastprivate(ii) 307 for (ii = 0; ii < 10; ii++) 308 c[ii] = a[ii]; 309 310 #pragma omp parallel 311 { 312 #pragma omp for 313 for (sii = 0; sii < 10; sii += 1) 314 c[sii] = a[sii]; 315 } 316 317 #pragma omp parallel 318 { 319 #pragma omp for 320 for (reg0 = 0; reg0 < 10; reg0 += 1) 321 c[reg0] = a[reg0]; 322 } 323 324 #pragma omp parallel 325 { 326 #pragma omp for 327 for (reg = 0; reg < 10; reg += 1) 328 c[reg] = a[reg]; 329 } 330 331 #pragma omp parallel 332 { 333 #pragma omp for 334 for (globalii = 0; globalii < 10; globalii += 1) 335 c[globalii] = a[globalii]; 336 } 337 338 #pragma omp parallel 339 { 340 #pragma omp for collapse(2) 341 for (ii = 0; ii < 10; ii += 1) 342 for (globalii = 0; globalii < 10; globalii += 1) 343 c[globalii] += a[globalii] + ii; 344 } 345 346 #pragma omp parallel 347 // expected-error@+2 {{statement after '#pragma omp for' must be a for loop}} 348 #pragma omp for 349 for (auto &item : a) { 350 item = item + 1; 351 } 352 353 #pragma omp parallel 354 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 355 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}} 356 #pragma omp for 357 for (unsigned i = 9; i < 10; i--) { 358 c[i] = a[i] + b[i]; 359 } 360 361 int(*lb)[4] = nullptr; 362 #pragma omp parallel 363 #pragma omp for 364 for (int(*p)[4] = lb; p < lb + 8; ++p) { 365 } 366 367 #pragma omp parallel 368 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 369 #pragma omp for 370 for (int a{0}; a < 10; ++a) { 371 } 372 373 return 0; 374 } 375 376 // Iterators allowed in openmp for-loops. 377 namespace std { 378 struct random_access_iterator_tag {}; 379 template <class Iter> 380 struct iterator_traits { 381 typedef typename Iter::difference_type difference_type; 382 typedef typename Iter::iterator_category iterator_category; 383 }; 384 template <class Iter> 385 typename iterator_traits<Iter>::difference_type 386 distance(Iter first, Iter last) { return first - last; } 387 } 388 class Iter0 { 389 public: 390 Iter0() {} 391 Iter0(const Iter0 &) {} 392 Iter0 operator++() { return *this; } 393 Iter0 operator--() { return *this; } 394 bool operator<(Iter0 a) { return true; } 395 }; 396 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}} 397 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}} 398 int operator-(Iter0 a, Iter0 b) { return 0; } 399 class Iter1 { 400 public: 401 Iter1(float f = 0.0f, double d = 0.0) {} 402 Iter1(const Iter1 &) {} 403 Iter1 operator++() { return *this; } 404 Iter1 operator--() { return *this; } 405 bool operator<(Iter1 a) { return true; } 406 bool operator>=(Iter1 a) { return false; } 407 }; 408 class GoodIter { 409 public: 410 GoodIter() {} 411 GoodIter(const GoodIter &) {} 412 GoodIter(int fst, int snd) {} 413 GoodIter &operator=(const GoodIter &that) { return *this; } 414 GoodIter &operator=(const Iter0 &that) { return *this; } 415 GoodIter &operator+=(int x) { return *this; } 416 GoodIter &operator-=(int x) { return *this; } 417 explicit GoodIter(void *) {} 418 GoodIter operator++() { return *this; } 419 GoodIter operator--() { return *this; } 420 bool operator!() { return true; } 421 bool operator<(GoodIter a) { return true; } 422 bool operator<=(GoodIter a) { return true; } 423 bool operator>=(GoodIter a) { return false; } 424 typedef int difference_type; 425 typedef std::random_access_iterator_tag iterator_category; 426 }; 427 // expected-note@+2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 2nd argument}} 428 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 429 int operator-(GoodIter a, GoodIter b) { return 0; } 430 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}} 431 GoodIter operator-(GoodIter a) { return a; } 432 // expected-note@+2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 2nd argument}} 433 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 434 GoodIter operator-(GoodIter a, int v) { return GoodIter(); } 435 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}} 436 GoodIter operator+(GoodIter a, int v) { return GoodIter(); } 437 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}} 438 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}} 439 GoodIter operator-(int v, GoodIter a) { return GoodIter(); } 440 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}} 441 GoodIter operator+(int v, GoodIter a) { return GoodIter(); } 442 443 int test_with_random_access_iterator() { 444 GoodIter begin, end; 445 Iter0 begin0, end0; 446 #pragma omp parallel 447 #pragma omp for 448 for (GoodIter I = begin; I < end; ++I) 449 ++I; 450 #pragma omp parallel 451 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 452 #pragma omp for 453 for (GoodIter &I = begin; I < end; ++I) 454 ++I; 455 #pragma omp parallel 456 #pragma omp for 457 for (GoodIter I = begin; 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(begin); I < end; ++I) 463 ++I; 464 #pragma omp parallel 465 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 466 #pragma omp for 467 for (GoodIter I(nullptr); I < end; ++I) 468 ++I; 469 #pragma omp parallel 470 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 471 #pragma omp for 472 for (GoodIter I(0); I < end; ++I) 473 ++I; 474 #pragma omp parallel 475 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 476 #pragma omp for 477 for (GoodIter I(1, 2); I < end; ++I) 478 ++I; 479 #pragma omp parallel 480 #pragma omp for 481 for (begin = GoodIter(0); begin < end; ++begin) 482 ++begin; 483 // expected-error@+4 {{invalid operands to binary expression ('GoodIter' and 'Iter0')}} 484 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 485 #pragma omp parallel 486 #pragma omp for 487 for (begin = begin0; begin < end; ++begin) 488 ++begin; 489 #pragma omp parallel 490 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 491 #pragma omp for 492 for (++begin; begin < end; ++begin) 493 ++begin; 494 #pragma omp parallel 495 #pragma omp for 496 for (begin = end; begin < end; ++begin) 497 ++begin; 498 #pragma omp parallel 499 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 500 #pragma omp for 501 for (GoodIter I = begin; I - I; ++I) 502 ++I; 503 #pragma omp parallel 504 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 505 #pragma omp for 506 for (GoodIter I = begin; begin < end; ++I) 507 ++I; 508 #pragma omp parallel 509 // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} 510 #pragma omp for 511 for (GoodIter I = begin; !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 = I + 1) 518 ++I; 519 #pragma omp parallel 520 #pragma omp for 521 for (GoodIter I = begin; I >= end; I = I - 1) 522 ++I; 523 #pragma omp parallel 524 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 525 #pragma omp for 526 for (GoodIter I = begin; I >= end; I = -I) 527 ++I; 528 #pragma omp parallel 529 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 530 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 531 #pragma omp for 532 for (GoodIter I = begin; I >= end; I = 2 + I) 533 ++I; 534 #pragma omp parallel 535 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 536 #pragma omp for 537 for (GoodIter I = begin; I >= end; I = 2 - I) 538 ++I; 539 // In the following example, we cannot update the loop variable using '+=' 540 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 541 #pragma omp parallel 542 #pragma omp for 543 for (Iter0 I = begin0; I < end0; ++I) 544 ++I; 545 #pragma omp parallel 546 // Initializer is constructor without params. 547 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 548 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 549 #pragma omp for 550 for (Iter0 I; I < end0; ++I) 551 ++I; 552 Iter1 begin1, end1; 553 // expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'Iter1')}} 554 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 555 #pragma omp parallel 556 #pragma omp for 557 for (Iter1 I = begin1; I < end1; ++I) 558 ++I; 559 #pragma omp parallel 560 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 561 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 562 #pragma omp for 563 for (Iter1 I = begin1; I >= end1; ++I) 564 ++I; 565 #pragma omp parallel 566 // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}} 567 // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 568 // Initializer is constructor with all default params. 569 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 570 #pragma omp for 571 for (Iter1 I; I < end1; ++I) { 572 } 573 return 0; 574 } 575 576 template <typename IT, int ST> 577 class TC { 578 public: 579 int dotest_lt(IT begin, IT end) { 580 #pragma omp parallel 581 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 582 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 583 #pragma omp for 584 for (IT I = begin; I < end; I = I + ST) { 585 ++I; 586 } 587 #pragma omp parallel 588 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 589 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 590 #pragma omp for 591 for (IT I = begin; I <= end; I += ST) { 592 ++I; 593 } 594 #pragma omp parallel 595 #pragma omp for 596 for (IT I = begin; I < end; ++I) { 597 ++I; 598 } 599 } 600 601 static IT step() { 602 return IT(ST); 603 } 604 }; 605 template <typename IT, int ST = 0> 606 int dotest_gt(IT begin, IT end) { 607 #pragma omp parallel 608 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 609 // expected-error@+2 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 = I + ST) { 612 ++I; 613 } 614 #pragma omp parallel 615 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 616 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 617 #pragma omp for 618 for (IT I = begin; I >= end; I += ST) { 619 ++I; 620 } 621 622 #pragma omp parallel 623 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 624 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 625 #pragma omp for 626 for (IT I = begin; I >= end; ++I) { 627 ++I; 628 } 629 630 #pragma omp parallel 631 #pragma omp for 632 for (IT I = begin; I < end; I += TC<int, ST>::step()) { 633 ++I; 634 } 635 } 636 637 void test_with_template() { 638 GoodIter begin, end; 639 TC<GoodIter, 100> t1; 640 TC<GoodIter, -100> t2; 641 t1.dotest_lt(begin, end); 642 t2.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}} 643 dotest_gt(begin, end); // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}} 644 dotest_gt<unsigned, -10>(0, 100); // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, -10>' requested here}} 645 } 646 647 void test_loop_break() { 648 const int N = 100; 649 float a[N], b[N], c[N]; 650 #pragma omp parallel 651 #pragma omp for 652 for (int i = 0; i < 10; i++) { 653 c[i] = a[i] + b[i]; 654 for (int j = 0; j < 10; ++j) { 655 if (a[i] > b[j]) 656 break; // OK in nested loop 657 } 658 switch (i) { 659 case 1: 660 b[i]++; 661 break; 662 default: 663 break; 664 } 665 if (c[i] > 10) 666 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 667 668 if (c[i] > 11) 669 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 670 } 671 672 #pragma omp parallel 673 #pragma omp for 674 for (int i = 0; i < 10; i++) { 675 for (int j = 0; j < 10; j++) { 676 c[i] = a[i] + b[i]; 677 if (c[i] > 10) { 678 if (c[i] < 20) { 679 break; // OK 680 } 681 } 682 } 683 } 684 } 685 686 void test_loop_eh() { 687 const int N = 100; 688 float a[N], b[N], c[N]; 689 #pragma omp parallel 690 #pragma omp for 691 for (int i = 0; i < 10; i++) { 692 c[i] = a[i] + b[i]; 693 try { 694 for (int j = 0; j < 10; ++j) { 695 if (a[i] > b[j]) 696 throw a[i]; 697 } 698 throw a[i]; 699 } catch (float f) { 700 if (f > 0.1) 701 throw a[i]; 702 return; // expected-error {{cannot return from OpenMP region}} 703 } 704 switch (i) { 705 case 1: 706 b[i]++; 707 break; 708 default: 709 break; 710 } 711 for (int j = 0; j < 10; j++) { 712 if (c[i] > 10) 713 throw c[i]; 714 } 715 } 716 if (c[9] > 10) 717 throw c[9]; // OK 718 719 #pragma omp parallel 720 #pragma omp for 721 for (int i = 0; i < 10; ++i) { 722 struct S { 723 void g() { throw 0; } 724 }; 725 } 726 } 727 728 void test_loop_firstprivate_lastprivate() { 729 S s(4); 730 #pragma omp parallel 731 #pragma omp for lastprivate(s) firstprivate(s) 732 for (int i = 0; i < 16; ++i) 733 ; 734 } 735 736 void test_ordered() { 737 #pragma omp parallel 738 #pragma omp for ordered ordered // expected-error {{directive '#pragma omp for' cannot contain more than one 'ordered' clause}} 739 for (int i = 0; i < 16; ++i) 740 ; 741 } 742 743 void test_nowait() { 744 #pragma omp parallel 745 #pragma omp for nowait nowait // expected-error {{directive '#pragma omp for' cannot contain more than one 'nowait' clause}} 746 for (int i = 0; i < 16; ++i) 747 ; 748 } 749