1 // RUN: %clang_cc1 -fsyntax-only -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp4 %s -Wuninitialized 2 // RUN: %clang_cc1 -fsyntax-only -fopenmp -fopenmp-version=50 -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp5 %s -Wuninitialized 3 4 // RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp4 %s -Wuninitialized 5 // RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -fopenmp-version=50 -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify=expected,omp5 %s -Wuninitialized 6 7 class S { 8 int a; 9 S() : a(0) {} 10 11 public: 12 S(int v) : a(v) {} 13 S(const S &s) : a(s.a) {} 14 }; 15 16 static int sii; 17 // expected-note@+1 {{defined as threadprivate or thread local}} 18 #pragma omp threadprivate(sii) 19 static int globalii; 20 21 // Currently, we cannot use "0" for global register variables. 22 // register int reg0 __asm__("0"); 23 int reg0; 24 25 int test_iteration_spaces() { 26 const int N = 100; 27 float a[N], b[N], c[N]; 28 int ii, jj, kk; 29 float fii; 30 double dii; 31 register int reg; // expected-warning {{'register' storage class specifier is deprecated}} 32 #pragma omp parallel 33 #pragma omp parallel master taskloop 34 for (int i = 0; i < 10; i += 1) { 35 c[i] = a[i] + b[i]; 36 } 37 #pragma omp parallel 38 #pragma omp parallel master taskloop 39 for (char i = 0; i < 10; i++) { 40 c[i] = a[i] + b[i]; 41 } 42 #pragma omp parallel 43 #pragma omp parallel master taskloop 44 for (char i = 0; i < 10; i += '\1') { 45 c[i] = a[i] + b[i]; 46 } 47 #pragma omp parallel 48 #pragma omp parallel master taskloop 49 for (long long i = 0; i < 10; i++) { 50 c[i] = a[i] + b[i]; 51 } 52 #pragma omp parallel 53 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}} 54 #pragma omp parallel master taskloop 55 for (long long i = 0; i < 10; i += 1.5) { 56 c[i] = a[i] + b[i]; 57 } 58 #pragma omp parallel 59 #pragma omp parallel master taskloop 60 for (long long i = 0; i < 'z'; i += 1u) { 61 c[i] = a[i] + b[i]; 62 } 63 #pragma omp parallel 64 // expected-error@+2 {{variable must be of integer or random access iterator type}} 65 #pragma omp parallel master taskloop 66 for (float fi = 0; fi < 10.0; fi++) { 67 c[(int)fi] = a[(int)fi] + b[(int)fi]; 68 } 69 #pragma omp parallel 70 // expected-error@+2 {{variable must be of integer or random access iterator type}} 71 #pragma omp parallel master taskloop 72 for (double fi = 0; fi < 10.0; fi++) { 73 c[(int)fi] = a[(int)fi] + b[(int)fi]; 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 parallel master taskloop 78 for (int &ref = ii; ref < 10; ref++) { 79 } 80 #pragma omp parallel 81 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 82 #pragma omp parallel master taskloop 83 for (int i; i < 10; i++) 84 c[i] = a[i]; 85 86 #pragma omp parallel 87 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 88 #pragma omp parallel master taskloop 89 for (int i = 0, j = 0; i < 10; ++i) 90 c[i] = a[i]; 91 92 #pragma omp parallel 93 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 94 #pragma omp parallel master taskloop 95 for (; ii < 10; ++ii) 96 c[ii] = a[ii]; 97 98 #pragma omp parallel 99 // expected-warning@+3 {{expression result unused}} 100 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 101 #pragma omp parallel master taskloop 102 for (ii + 1; ii < 10; ++ii) 103 c[ii] = a[ii]; 104 105 #pragma omp parallel 106 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 107 #pragma omp parallel master taskloop 108 for (c[ii] = 0; ii < 10; ++ii) 109 c[ii] = a[ii]; 110 111 #pragma omp parallel 112 // Ok to skip parenthesises. 113 #pragma omp parallel master taskloop 114 for (((ii)) = 0; ii < 10; ++ii) 115 c[ii] = a[ii]; 116 117 #pragma omp parallel 118 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'i'}} 119 #pragma omp parallel master taskloop 120 for (int i = 0; i; i++) 121 c[i] = a[i]; 122 123 #pragma omp parallel 124 // omp4-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} omp5-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'i'}} 125 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}} 126 #pragma omp parallel master taskloop 127 for (int i = 0; jj < kk; ii++) 128 c[i] = a[i]; 129 130 #pragma omp parallel 131 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'i'}} 132 #pragma omp parallel master taskloop 133 for (int i = 0; !!i; i++) 134 c[i] = a[i]; 135 136 // Ok 137 #pragma omp parallel 138 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} 139 #pragma omp parallel master taskloop 140 for (int i = 0; i != 1; i++) 141 c[i] = a[i]; 142 143 #pragma omp parallel 144 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'i'}} 145 #pragma omp parallel master taskloop 146 for (int i = 0;; i++) 147 c[i] = a[i]; 148 149 #pragma omp parallel 150 // Ok. 151 #pragma omp parallel master taskloop 152 for (int i = 11; i > 10; i--) 153 c[i] = a[i]; 154 155 #pragma omp parallel 156 // Ok. 157 #pragma omp parallel master taskloop 158 for (int i = 0; i < 10; ++i) 159 c[i] = a[i]; 160 161 #pragma omp parallel 162 // Ok. 163 #pragma omp parallel master taskloop 164 for (ii = 0; ii < 10; ++ii) 165 c[ii] = a[ii]; 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 parallel master taskloop 170 for (ii = 0; ii < 10; ++jj) 171 c[ii] = a[jj]; 172 173 #pragma omp parallel 174 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 175 #pragma omp parallel master taskloop 176 for (ii = 0; ii < 10; ++++ii) 177 c[ii] = a[ii]; 178 179 #pragma omp parallel 180 // Ok but undefined behavior (in general, cannot check that incr 181 // is really loop-invariant). 182 #pragma omp parallel master taskloop 183 for (ii = 0; ii < 10; ii = ii + ii) 184 c[ii] = a[ii]; 185 186 #pragma omp parallel 187 // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}} 188 #pragma omp parallel master taskloop 189 for (ii = 0; ii < 10; ii = ii + 1.0f) 190 c[ii] = a[ii]; 191 192 #pragma omp parallel 193 // Ok - step was converted to integer type. 194 #pragma omp parallel master taskloop 195 for (ii = 0; ii < 10; ii = ii + (int)1.1f) 196 c[ii] = a[ii]; 197 198 #pragma omp parallel 199 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 200 #pragma omp parallel master taskloop 201 for (ii = 0; ii < 10; jj = ii + 2) 202 c[ii] = a[ii]; 203 204 #pragma omp parallel 205 // expected-warning@+3 {{relational comparison result unused}} 206 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 207 #pragma omp parallel master taskloop 208 for (ii = 0; ii<10; jj> kk + 2) 209 c[ii] = a[ii]; 210 211 #pragma omp parallel 212 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 213 #pragma omp parallel master taskloop 214 for (ii = 0; ii < 10;) 215 c[ii] = a[ii]; 216 217 #pragma omp parallel 218 // expected-warning@+3 {{expression result unused}} 219 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 220 #pragma omp parallel master taskloop 221 for (ii = 0; ii < 10; !ii) 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 parallel master taskloop 227 for (ii = 0; ii < 10; ii ? ++ii : ++jj) 228 c[ii] = a[ii]; 229 230 #pragma omp parallel 231 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}} 232 #pragma omp parallel master taskloop 233 for (ii = 0; ii < 10; ii = ii < 10) 234 c[ii] = a[ii]; 235 236 #pragma omp parallel 237 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 238 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 239 #pragma omp parallel master taskloop 240 for (ii = 0; ii < 10; ii = ii + 0) 241 c[ii] = a[ii]; 242 243 #pragma omp parallel 244 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 245 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 246 #pragma omp parallel master taskloop 247 for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45)) 248 c[ii] = a[ii]; 249 250 #pragma omp parallel 251 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 252 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 253 #pragma omp parallel master taskloop 254 for (ii = 0; (ii) < 10; ii -= 25) 255 c[ii] = a[ii]; 256 257 #pragma omp parallel 258 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 259 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 260 #pragma omp parallel master taskloop 261 for (ii = 0; (ii < 10); ii -= 0) 262 c[ii] = a[ii]; 263 264 #pragma omp parallel 265 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 266 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 267 #pragma omp parallel master taskloop 268 for (ii = 0; ii > 10; (ii += 0)) 269 c[ii] = a[ii]; 270 271 #pragma omp parallel 272 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 273 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 274 #pragma omp parallel master taskloop 275 for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii)) 276 c[ii] = a[ii]; 277 278 #pragma omp parallel 279 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 280 // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}} 281 #pragma omp parallel master taskloop 282 for ((ii = 0); ii > 10; (ii -= 0)) 283 c[ii] = a[ii]; 284 285 #pragma omp parallel 286 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 287 // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}} 288 #pragma omp parallel master taskloop 289 for (ii = 0; (ii < 10); (ii -= 0)) 290 c[ii] = a[ii]; 291 292 #pragma omp parallel 293 // expected-note@+2 {{defined as firstprivate}} 294 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp parallel master taskloop' directive may not be firstprivate, predetermined as private}} 295 #pragma omp parallel master taskloop firstprivate(ii) 296 for (ii = 0; ii < 10; ii++) 297 c[ii] = a[ii]; 298 299 #pragma omp parallel 300 // expected-error@+1 {{unexpected OpenMP clause 'linear' in directive '#pragma omp parallel master taskloop'}} 301 #pragma omp parallel master taskloop linear(ii) 302 for (ii = 0; ii < 10; ii++) 303 c[ii] = a[ii]; 304 305 #pragma omp parallel 306 #pragma omp parallel master taskloop private(ii) 307 for (ii = 0; ii < 10; ii++) 308 c[ii] = a[ii]; 309 310 #pragma omp parallel 311 #pragma omp parallel master taskloop lastprivate(ii) 312 for (ii = 0; ii < 10; ii++) 313 c[ii] = a[ii]; 314 315 #pragma omp parallel 316 { 317 // expected-error@+2 {{loop iteration variable in the associated loop of 'omp parallel master taskloop' directive may not be threadprivate or thread local, predetermined as private}} 318 #pragma omp parallel master taskloop 319 for (sii = 0; sii < 10; sii += 1) 320 c[sii] = a[sii]; 321 } 322 323 #pragma omp parallel 324 { 325 #pragma omp parallel master taskloop 326 for (reg0 = 0; reg0 < 10; reg0 += 1) 327 c[reg0] = a[reg0]; 328 } 329 330 #pragma omp parallel 331 { 332 #pragma omp parallel master taskloop 333 for (reg = 0; reg < 10; reg += 1) 334 c[reg] = a[reg]; 335 } 336 337 #pragma omp parallel 338 { 339 #pragma omp parallel master taskloop 340 for (globalii = 0; globalii < 10; globalii += 1) 341 c[globalii] = a[globalii]; 342 } 343 344 #pragma omp parallel 345 { 346 #pragma omp parallel master taskloop collapse(2) 347 for (ii = 0; ii < 10; ii += 1) 348 for (globalii = 0; globalii < 10; globalii += 1) 349 c[globalii] += a[globalii] + ii; 350 } 351 352 #pragma omp parallel 353 // omp4-error@+2 {{statement after '#pragma omp parallel master taskloop' must be a for loop}} 354 #pragma omp parallel master taskloop 355 for (auto &item : a) { 356 item = item + 1; 357 } 358 359 #pragma omp parallel 360 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 361 // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}} 362 #pragma omp parallel master taskloop 363 for (unsigned i = 9; i < 10; i--) { 364 c[i] = a[i] + b[i]; 365 } 366 367 int(*lb)[4] = nullptr; 368 #pragma omp parallel 369 #pragma omp parallel master taskloop 370 for (int(*p)[4] = lb; p < lb + 8; ++p) { 371 } 372 373 #pragma omp parallel 374 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 375 #pragma omp parallel master taskloop 376 for (int a{0}; a < 10; ++a) { 377 } 378 379 return 0; 380 } 381 382 // Iterators allowed in openmp for-loops. 383 namespace std { 384 struct random_access_iterator_tag {}; 385 template <class Iter> 386 struct iterator_traits { 387 typedef typename Iter::difference_type difference_type; 388 typedef typename Iter::iterator_category iterator_category; 389 }; 390 template <class Iter> 391 typename iterator_traits<Iter>::difference_type 392 distance(Iter first, Iter last) { return first - last; } 393 } 394 class Iter0 { 395 public: 396 Iter0() {} 397 Iter0(const Iter0 &) {} 398 Iter0 operator++() { return *this; } 399 Iter0 operator--() { return *this; } 400 bool operator<(Iter0 a) { return true; } 401 }; 402 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}} 403 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}} 404 int operator-(Iter0 a, Iter0 b) { return 0; } 405 class Iter1 { 406 public: 407 Iter1(float f = 0.0f, double d = 0.0) {} 408 Iter1(const Iter1 &) {} 409 Iter1 operator++() { return *this; } 410 Iter1 operator--() { return *this; } 411 bool operator<(Iter1 a) { return true; } 412 bool operator>=(Iter1 a) { return false; } 413 }; 414 class GoodIter { 415 public: 416 GoodIter() {} 417 GoodIter(const GoodIter &) {} 418 GoodIter(int fst, int snd) {} 419 GoodIter &operator=(const GoodIter &that) { return *this; } 420 GoodIter &operator=(const Iter0 &that) { return *this; } 421 GoodIter &operator+=(int x) { return *this; } 422 GoodIter &operator-=(int x) { return *this; } 423 explicit GoodIter(void *) {} 424 GoodIter operator++() { return *this; } 425 GoodIter operator--() { return *this; } 426 bool operator!() { return true; } 427 bool operator<(GoodIter a) { return true; } 428 bool operator<=(GoodIter a) { return true; } 429 bool operator>=(GoodIter a) { return false; } 430 typedef int difference_type; 431 typedef std::random_access_iterator_tag iterator_category; 432 }; 433 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}} 434 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 435 int operator-(GoodIter a, GoodIter b) { return 0; } 436 // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}} 437 GoodIter operator-(GoodIter a) { return a; } 438 // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}} 439 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}} 440 GoodIter operator-(GoodIter a, int v) { return GoodIter(); } 441 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}} 442 GoodIter operator+(GoodIter a, int v) { return GoodIter(); } 443 // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}} 444 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}} 445 GoodIter operator-(int v, GoodIter a) { return GoodIter(); } 446 // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}} 447 GoodIter operator+(int v, GoodIter a) { return GoodIter(); } 448 449 int test_with_random_access_iterator() { 450 GoodIter begin, end; 451 Iter0 begin0, end0; 452 #pragma omp parallel 453 #pragma omp parallel master taskloop 454 for (GoodIter I = begin; I < end; ++I) 455 ++I; 456 #pragma omp parallel 457 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 458 #pragma omp parallel master taskloop 459 for (GoodIter &I = begin; I < end; ++I) 460 ++I; 461 #pragma omp parallel 462 #pragma omp parallel master taskloop 463 for (GoodIter I = begin; I >= end; --I) 464 ++I; 465 #pragma omp parallel 466 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 467 #pragma omp parallel master taskloop 468 for (GoodIter I(begin); I < end; ++I) 469 ++I; 470 #pragma omp parallel 471 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 472 #pragma omp parallel master taskloop 473 for (GoodIter I(nullptr); I < end; ++I) 474 ++I; 475 #pragma omp parallel 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 master taskloop 478 for (GoodIter I(0); I < end; ++I) 479 ++I; 480 #pragma omp parallel 481 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 482 #pragma omp parallel master taskloop 483 for (GoodIter I(1, 2); I < end; ++I) 484 ++I; 485 #pragma omp parallel 486 #pragma omp parallel master taskloop 487 for (begin = GoodIter(0); begin < end; ++begin) 488 ++begin; 489 // expected-error@+4 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}} 490 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 491 #pragma omp parallel 492 #pragma omp parallel master taskloop 493 for (begin = begin0; begin < end; ++begin) 494 ++begin; 495 #pragma omp parallel 496 // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 497 #pragma omp parallel master taskloop 498 for (++begin; begin < end; ++begin) 499 ++begin; 500 #pragma omp parallel 501 #pragma omp parallel master taskloop 502 for (begin = end; begin < end; ++begin) 503 ++begin; 504 #pragma omp parallel 505 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'I'}} 506 #pragma omp parallel master taskloop 507 for (GoodIter I = begin; I - I; ++I) 508 ++I; 509 #pragma omp parallel 510 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'I'}} 511 #pragma omp parallel master taskloop 512 for (GoodIter I = begin; begin < end; ++I) 513 ++I; 514 #pragma omp parallel 515 // omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}} omp5-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable 'I'}} 516 #pragma omp parallel master taskloop 517 for (GoodIter I = begin; !I; ++I) 518 ++I; 519 #pragma omp parallel 520 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 521 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 522 #pragma omp parallel master taskloop 523 for (GoodIter I = begin; I >= end; I = I + 1) 524 ++I; 525 #pragma omp parallel 526 #pragma omp parallel master taskloop 527 for (GoodIter I = begin; I >= end; I = I - 1) 528 ++I; 529 #pragma omp parallel 530 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 531 #pragma omp parallel master taskloop 532 for (GoodIter I = begin; I >= end; I = -I) 533 ++I; 534 #pragma omp parallel 535 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 536 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 537 #pragma omp parallel master taskloop 538 for (GoodIter I = begin; I >= end; I = 2 + I) 539 ++I; 540 #pragma omp parallel 541 // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}} 542 #pragma omp parallel master taskloop 543 for (GoodIter I = begin; I >= end; I = 2 - I) 544 ++I; 545 // In the following example, we cannot update the loop variable using '+=' 546 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 547 #pragma omp parallel 548 #pragma omp parallel master taskloop 549 for (Iter0 I = begin0; I < end0; ++I) 550 ++I; 551 #pragma omp parallel 552 // Initializer is constructor without params. 553 // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}} 554 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 555 #pragma omp parallel master taskloop 556 for (Iter0 I; I < end0; ++I) 557 ++I; 558 Iter1 begin1, end1; 559 // expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'Iter1')}} 560 // expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 561 #pragma omp parallel 562 #pragma omp parallel master taskloop 563 for (Iter1 I = begin1; I < end1; ++I) 564 ++I; 565 #pragma omp parallel 566 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 567 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 568 #pragma omp parallel master taskloop 569 for (Iter1 I = begin1; I >= end1; ++I) 570 ++I; 571 #pragma omp parallel 572 // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}} 573 // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}} 574 // Initializer is constructor with all default params. 575 // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}} 576 #pragma omp parallel master taskloop 577 for (Iter1 I; I < end1; ++I) { 578 } 579 return 0; 580 } 581 582 template <typename IT, int ST> 583 class TC { 584 public: 585 int dotest_lt(IT begin, IT end) { 586 #pragma omp parallel 587 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 588 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 589 #pragma omp parallel master taskloop 590 for (IT I = begin; I < end; I = I + ST) { 591 ++I; 592 } 593 #pragma omp parallel 594 // expected-note@+3 {{loop step is expected to be positive due to this condition}} 595 // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}} 596 #pragma omp parallel master taskloop 597 for (IT I = begin; I <= end; I += ST) { 598 ++I; 599 } 600 #pragma omp parallel 601 #pragma omp parallel master taskloop 602 for (IT I = begin; I < end; ++I) { 603 ++I; 604 } 605 } 606 607 static IT step() { 608 return IT(ST); 609 } 610 }; 611 template <typename IT, int ST = 0> 612 int dotest_gt(IT begin, IT end) { 613 #pragma omp parallel 614 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 615 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 616 #pragma omp parallel master taskloop 617 for (IT I = begin; I >= end; I = I + ST) { 618 ++I; 619 } 620 #pragma omp parallel 621 // expected-note@+3 2 {{loop step is expected to be negative due to this condition}} 622 // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 623 #pragma omp parallel master taskloop 624 for (IT I = begin; I >= end; I += ST) { 625 ++I; 626 } 627 628 #pragma omp parallel 629 // expected-note@+3 {{loop step is expected to be negative due to this condition}} 630 // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}} 631 #pragma omp parallel master taskloop 632 for (IT I = begin; I >= end; ++I) { 633 ++I; 634 } 635 636 #pragma omp parallel 637 #pragma omp parallel master taskloop 638 for (IT I = begin; I < end; I += TC<int, ST>::step()) { 639 ++I; 640 } 641 } 642 643 void test_with_template() { 644 GoodIter begin, end; 645 TC<GoodIter, 100> t1; 646 TC<GoodIter, -100> t2; 647 t1.dotest_lt(begin, end); 648 t2.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}} 649 dotest_gt(begin, end); // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}} 650 dotest_gt<unsigned, 10>(0, 100); // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}} 651 } 652 653 void test_loop_break() { 654 const int N = 100; 655 float a[N], b[N], c[N]; 656 #pragma omp parallel 657 #pragma omp parallel master taskloop 658 for (int i = 0; i < 10; i++) { 659 c[i] = a[i] + b[i]; 660 for (int j = 0; j < 10; ++j) { 661 if (a[i] > b[j]) 662 break; // OK in nested loop 663 } 664 switch (i) { 665 case 1: 666 b[i]++; 667 break; 668 default: 669 break; 670 } 671 if (c[i] > 10) 672 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 673 674 if (c[i] > 11) 675 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}} 676 } 677 678 #pragma omp parallel 679 #pragma omp parallel master taskloop 680 for (int i = 0; i < 10; i++) { 681 for (int j = 0; j < 10; j++) { 682 c[i] = a[i] + b[i]; 683 if (c[i] > 10) { 684 if (c[i] < 20) { 685 break; // OK 686 } 687 } 688 } 689 } 690 } 691 692 void test_loop_eh() { 693 const int N = 100; 694 float a[N], b[N], c[N]; 695 #pragma omp parallel 696 #pragma omp parallel master taskloop 697 for (int i = 0; i < 10; i++) { 698 c[i] = a[i] + b[i]; 699 try { 700 for (int j = 0; j < 10; ++j) { 701 if (a[i] > b[j]) 702 throw a[i]; 703 } 704 throw a[i]; 705 } catch (float f) { 706 if (f > 0.1) 707 throw a[i]; 708 return; // expected-error {{cannot return from OpenMP region}} 709 } 710 switch (i) { 711 case 1: 712 b[i]++; 713 break; 714 default: 715 break; 716 } 717 for (int j = 0; j < 10; j++) { 718 if (c[i] > 10) 719 throw c[i]; 720 } 721 } 722 if (c[9] > 10) 723 throw c[9]; // OK 724 725 #pragma omp parallel 726 #pragma omp parallel master taskloop 727 for (int i = 0; i < 10; ++i) { 728 struct S { 729 void g() { throw 0; } 730 }; 731 } 732 } 733 734 void test_loop_firstprivate_lastprivate() { 735 S s(4); 736 #pragma omp parallel 737 #pragma omp parallel master taskloop lastprivate(s) firstprivate(s) 738 for (int i = 0; i < 16; ++i) 739 ; 740 } 741 742