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