864 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -fopenmp -fopenmp-version=45 -x c++ -std=c++11 -fexceptions -fcxx-exceptions -fnamed-loops -verify=expected,omp4 %s -Wuninitialized2// RUN: %clang_cc1 -fsyntax-only -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -fnamed-loops -verify=expected,omp5 %s -Wuninitialized3 4// RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -fopenmp-version=45 -x c++ -std=c++11 -fexceptions -fcxx-exceptions -fnamed-loops -verify=expected,omp4 %s -Wuninitialized5// RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -x c++ -std=c++11 -fexceptions -fcxx-exceptions -fnamed-loops -verify=expected,omp5 %s -Wuninitialized6 7class S {8 int a;9 S() : a(0) {}10 11public:12 S(int v) : a(v) {}13 S(const S &s) : a(s.a) {}14};15 16static int sii;17// expected-note@+1 {{defined as threadprivate or thread local}}18#pragma omp threadprivate(sii)19static int globalii;20 21// Currently, we cannot use "0" for global register variables.22// register int reg0 __asm__("0");23int reg0;24 25int 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 parallel33#pragma omp for34 for (int i = 0; i < 10; i += 1) {35 c[i] = a[i] + b[i];36 }37#pragma omp parallel38#pragma omp for39 for (char i = 0; i < 10; i++) {40 c[i] = a[i] + b[i];41 }42#pragma omp parallel43#pragma omp for44 for (char i = 0; i < 10; i += '\1') {45 c[i] = a[i] + b[i];46 }47#pragma omp parallel48#pragma omp for49 for (long long i = 0; i < 10; i++) {50 c[i] = a[i] + b[i];51 }52#pragma omp parallel53// expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}}54#pragma omp for55 for (long long i = 0; i < 10; i += 1.5) {56 c[i] = a[i] + b[i];57 }58#pragma omp parallel59#pragma omp for60 for (long long i = 0; i < 'z'; i += 1u) {61 c[i] = a[i] + b[i];62 }63#pragma omp parallel64// expected-error@+2 {{variable must be of integer or random access iterator type}}65#pragma omp for66 for (float fi = 0; fi < 10.0; fi++) {67 c[(int)fi] = a[(int)fi] + b[(int)fi];68 }69#pragma omp parallel70// expected-error@+2 {{variable must be of integer or random access iterator type}}71#pragma omp for72 for (double fi = 0; fi < 10.0; fi++) {73 c[(int)fi] = a[(int)fi] + b[(int)fi];74 }75#pragma omp parallel76// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}77#pragma omp for78 for (int &ref = ii; ref < 10; ref++) {79 }80#pragma omp parallel81// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}82#pragma omp for83 for (int i; i < 10; i++)84 c[i] = a[i];85 86#pragma omp parallel87// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}88#pragma omp for89 for (int i = 0, j = 0; i < 10; ++i)90 c[i] = a[i];91 92#pragma omp parallel93// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}94#pragma omp for95 for (; ii < 10; ++ii)96 c[ii] = a[ii];97 98#pragma omp parallel99// 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 for102 for (ii + 1; ii < 10; ++ii)103 c[ii] = a[ii];104 105#pragma omp parallel106// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}107#pragma omp for108 for (c[ii] = 0; ii < 10; ++ii)109 c[ii] = a[ii];110 111#pragma omp parallel112// Ok to skip parenthesises.113#pragma omp for114 for (((ii)) = 0; ii < 10; ++ii)115 c[ii] = a[ii];116 117#pragma omp parallel118// 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 for120 for (int i = 0; i; i++)121 c[i] = a[i];122 123#pragma omp parallel124// 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 for127 for (int i = 0; jj < kk; ii++)128 c[i] = a[i];129 130#pragma omp parallel131// 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 for133 for (int i = 0; !!i; i++)134 c[i] = a[i];135 136#pragma omp parallel137// omp4-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}138#pragma omp for139 for (int i = 0; i != 1; i++)140 c[i] = a[i];141 142#pragma omp parallel143// 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'}}144#pragma omp for145 for (int i = 0;; i++)146 c[i] = a[i];147 148#pragma omp parallel149// Ok.150#pragma omp for151 for (int i = 11; i > 10; i--)152 c[i] = a[i];153 154#pragma omp parallel155// Ok.156#pragma omp for157 for (int i = 0; i < 10; ++i)158 c[i] = a[i];159 160#pragma omp parallel161// Ok.162#pragma omp for163 for (ii = 0; ii < 10; ++ii)164 c[ii] = a[ii];165 166#pragma omp parallel167// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}168#pragma omp for169 for (ii = 0; ii < 10; ++jj)170 c[ii] = a[jj];171 172#pragma omp parallel173// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}174#pragma omp for175 for (ii = 0; ii < 10; ++++ii)176 c[ii] = a[ii];177 178#pragma omp parallel179// Ok but undefined behavior (in general, cannot check that incr180// is really loop-invariant).181#pragma omp for182 for (ii = 0; ii < 10; ii = ii + ii)183 c[ii] = a[ii];184 185#pragma omp parallel186// expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}}187#pragma omp for188 for (ii = 0; ii < 10; ii = ii + 1.0f)189 c[ii] = a[ii];190 191#pragma omp parallel192// Ok - step was converted to integer type.193#pragma omp for194 for (ii = 0; ii < 10; ii = ii + (int)1.1f)195 c[ii] = a[ii];196 197#pragma omp parallel198// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}199#pragma omp for200 for (ii = 0; ii < 10; jj = ii + 2)201 c[ii] = a[ii];202 203#pragma omp parallel204// expected-warning@+3 {{relational comparison result unused}}205// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}206#pragma omp for207 for (ii = 0; ii<10; jj> kk + 2)208 c[ii] = a[ii];209 210#pragma omp parallel211// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}212#pragma omp for213 for (ii = 0; ii < 10;)214 c[ii] = a[ii];215 216#pragma omp parallel217// expected-warning@+3 {{expression result unused}}218// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}219#pragma omp for220 for (ii = 0; ii < 10; !ii)221 c[ii] = a[ii];222 223#pragma omp parallel224// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}225#pragma omp for226 for (ii = 0; ii < 10; ii ? ++ii : ++jj)227 c[ii] = a[ii];228 229#pragma omp parallel230// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}231#pragma omp for232 for (ii = 0; ii < 10; ii = ii < 10)233 c[ii] = a[ii];234 235#pragma omp parallel236// 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 for239 for (ii = 0; ii < 10; ii = ii + 0)240 c[ii] = a[ii];241 242#pragma omp parallel243// expected-note@+3 {{loop step is expected to be positive due to this condition}}244// expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}245#pragma omp for246 for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45))247 c[ii] = a[ii];248 249#pragma omp parallel250// expected-note@+3 {{loop step is expected to be positive due to this condition}}251// expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}252#pragma omp for253 for (ii = 0; (ii) < 10; ii -= 25)254 c[ii] = a[ii];255 256#pragma omp parallel257// expected-note@+3 {{loop step is expected to be positive due to this condition}}258// expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}259#pragma omp for260 for (ii = 0; (ii < 10); ii -= 0)261 c[ii] = a[ii];262 263#pragma omp parallel264// expected-note@+3 {{loop step is expected to be negative due to this condition}}265// expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}266#pragma omp for267 for (ii = 0; ii > 10; (ii += 0))268 c[ii] = a[ii];269 270#pragma omp parallel271// expected-note@+3 {{loop step is expected to be positive due to this condition}}272// expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}273#pragma omp for274 for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii))275 c[ii] = a[ii];276 277#pragma omp parallel278// expected-note@+3 {{loop step is expected to be negative due to this condition}}279// expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}280#pragma omp for281 for ((ii = 0); ii > 10; (ii -= 0))282 c[ii] = a[ii];283 284#pragma omp parallel285// expected-note@+3 {{loop step is expected to be positive due to this condition}}286// expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}287#pragma omp for288 for (ii = 0; (ii < 10); (ii -= 0))289 c[ii] = a[ii];290 291#pragma omp parallel292// expected-error@+3 {{the loop initializer expression depends on the current loop control variable}}293// expected-error@+2 2 {{the loop condition expression depends on the current loop control variable}}294#pragma omp for295 for (ii = ii * 10 + 25; ii < ii / ii - 23; ii += 1)296 c[ii] = a[ii];297 298// expected-error@+3 {{expected loop invariant expression or '<invariant1> * ii + <invariant2>' kind of expression}}299#pragma omp for collapse(2)300 for (ii = 10 + 25; ii < 1000; ii += 1)301 for (kk = ii * 10 + 25; kk < ii / ii - 23; kk += 1)302 ;303 304// expected-error@+4 {{expected loop invariant expression or '<invariant1> * ii + <invariant2>' kind of expression}}305#pragma omp for collapse(3)306 for (ii = 10 + 25; ii < 1000; ii += 1)307 for (jj = 10 + 25; jj < 1000; jj += 1)308 for (kk = ii * 10 + 25; kk < jj - 23; kk += 1)309 ;310 311#pragma omp parallel312// expected-note@+2 {{defined as firstprivate}}313// expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be firstprivate, predetermined as private}}314#pragma omp for firstprivate(ii)315 for (ii = 0; ii < 10; ii++)316 c[ii] = a[ii];317 318#pragma omp parallel319// expected-note@+2 {{defined as linear}}320// expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be linear, predetermined as private}}321#pragma omp for linear(ii)322 for (ii = 0; ii < 10; ii++)323 c[ii] = a[ii];324 325#pragma omp parallel326#pragma omp for private(ii)327 for (ii = 0; ii < 10; ii++)328 c[ii] = a[ii];329 330#pragma omp parallel331#pragma omp for lastprivate(ii)332 for (ii = 0; ii < 10; ii++)333 c[ii] = a[ii];334 335#pragma omp parallel336 {337// expected-error@+2 {{loop iteration variable in the associated loop of 'omp for' directive may not be threadprivate or thread local, predetermined as private}}338#pragma omp for339 for (sii = 0; sii < 10; sii += 1)340 c[sii] = a[sii];341 }342 343#pragma omp parallel344 {345#pragma omp for346 for (reg0 = 0; reg0 < 10; reg0 += 1)347 c[reg0] = a[reg0];348 }349 350#pragma omp parallel351 {352#pragma omp for353 for (reg = 0; reg < 10; reg += 1)354 c[reg] = a[reg];355 }356 357#pragma omp parallel358 {359#pragma omp for360 for (globalii = 0; globalii < 10; globalii += 1)361 c[globalii] = a[globalii];362 }363 364#pragma omp parallel365 {366#pragma omp for collapse(2)367 for (ii = 0; ii < 10; ii += 1)368 for (globalii = 0; globalii < 10; globalii += 1)369 c[globalii] += a[globalii] + ii;370 }371 372#pragma omp parallel373// omp4-error@+2 {{statement after '#pragma omp for' must be a for loop}}374#pragma omp for375 for (auto &item : a) {376 item = item + 1;377 }378 379#pragma omp parallel380// expected-note@+3 {{loop step is expected to be positive due to this condition}}381// expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}}382#pragma omp for383 for (unsigned i = 9; i < 10; i--) {384 c[i] = a[i] + b[i];385 }386 387 int(*lb)[4] = nullptr;388#pragma omp parallel389#pragma omp for390 for (int(*p)[4] = lb; p < lb + 8; ++p) {391 }392 393#pragma omp parallel394// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}395#pragma omp for396 for (int a{0}; a < 10; ++a) {397 }398 399 return 0;400}401 402// Iterators allowed in openmp for-loops.403namespace std {404struct random_access_iterator_tag {};405template <class Iter>406struct iterator_traits {407 typedef typename Iter::difference_type difference_type;408 typedef typename Iter::iterator_category iterator_category;409};410template <class Iter>411typename iterator_traits<Iter>::difference_type412distance(Iter first, Iter last) { return first - last; }413}414class Iter0 {415public:416 Iter0() {}417 Iter0(const Iter0 &) {}418 Iter0 operator++() { return *this; }419 Iter0 operator--() { return *this; }420 bool operator<(Iter0 a) { return true; }421};422// expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}}423// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}}424int operator-(Iter0 a, Iter0 b) { return 0; }425class Iter1 {426public:427 Iter1(float f = 0.0f, double d = 0.0) {}428 Iter1(const Iter1 &) {}429 Iter1 operator++() { return *this; }430 Iter1 operator--() { return *this; }431 bool operator<(Iter1 a) { return true; }432 bool operator>=(Iter1 a) { return false; }433};434class GoodIter {435public:436 GoodIter() {}437 GoodIter(const GoodIter &) {}438 GoodIter(int fst, int snd) {}439 GoodIter &operator=(const GoodIter &that) { return *this; }440 GoodIter &operator=(const Iter0 &that) { return *this; }441 GoodIter &operator+=(int x) { return *this; }442 GoodIter &operator-=(int x) { return *this; }443 explicit GoodIter(void *) {}444 GoodIter operator++() { return *this; }445 GoodIter operator--() { return *this; }446 bool operator!() { return true; }447 bool operator<(GoodIter a) { return true; }448 bool operator<=(GoodIter a) { return true; }449 bool operator>=(GoodIter a) { return false; }450 typedef int difference_type;451 typedef std::random_access_iterator_tag iterator_category;452};453class GoodIter1 {454public:455 GoodIter1() {}456 GoodIter1(const GoodIter1 &) {}457 GoodIter1 &operator++(int) { return *this; }458 GoodIter1 &operator=(const GoodIter1 &that) { return *this; }459 GoodIter1 &operator+=(int x) { return *this; }460 friend long operator-(const GoodIter1 &, const GoodIter1 &);461 GoodIter1 &operator-(int) { return *this; }462 bool operator<(GoodIter1 a) { return true; }463 typedef int difference_type;464 typedef std::random_access_iterator_tag iterator_category;465};466// expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}}467// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}468int operator-(GoodIter a, GoodIter b) { return 0; }469// expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}}470GoodIter operator-(GoodIter a) { return a; }471// expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}}472// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}473GoodIter operator-(GoodIter a, int v) { return GoodIter(); }474// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}}475GoodIter operator+(GoodIter a, int v) { return GoodIter(); }476// expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}}477// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}}478GoodIter operator-(int v, GoodIter a) { return GoodIter(); }479// expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}}480GoodIter operator+(int v, GoodIter a) { return GoodIter(); }481 482int test_with_random_access_iterator() {483 GoodIter begin, end;484 Iter0 begin0, end0;485#pragma omp parallel486#pragma omp for487 for (GoodIter I = begin; I < end; ++I)488 ++I;489#pragma omp parallel490// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}491#pragma omp for492 for (GoodIter &I = begin; I < end; ++I)493 ++I;494#pragma omp parallel495#pragma omp for496 for (GoodIter I = begin; I >= end; --I)497 ++I;498#pragma omp parallel499// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}500#pragma omp for501 for (GoodIter I(begin); I < end; ++I)502 ++I;503#pragma omp parallel504// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}505#pragma omp for506 for (GoodIter I(nullptr); I < end; ++I)507 ++I;508#pragma omp parallel509// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}510#pragma omp for511 for (GoodIter I(0); I < end; ++I)512 ++I;513#pragma omp parallel514// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}515#pragma omp for516 for (GoodIter I(1, 2); I < end; ++I)517 ++I;518#pragma omp parallel519#pragma omp for520 for (begin = GoodIter(0); begin < end; ++begin)521 ++begin;522// expected-error@+4 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}}523// expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}524#pragma omp parallel525#pragma omp for526 for (begin = begin0; begin < end; ++begin)527 ++begin;528#pragma omp parallel529// expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}530#pragma omp for531 for (++begin; begin < end; ++begin)532 ++begin;533#pragma omp parallel534#pragma omp for535 for (begin = end; begin < end; ++begin)536 ++begin;537#pragma omp parallel538// 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'}}539#pragma omp for540 for (GoodIter I = begin; I - I; ++I)541 ++I;542#pragma omp parallel543// 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'}}544#pragma omp for545 for (GoodIter I = begin; begin < end; ++I)546 ++I;547#pragma omp parallel548// 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'}}549#pragma omp for550 for (GoodIter I = begin; !I; ++I)551 ++I;552#pragma omp parallel553// expected-note@+3 {{loop step is expected to be negative due to this condition}}554// expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}555#pragma omp for556 for (GoodIter I = begin; I >= end; I = I + 1)557 ++I;558#pragma omp parallel559#pragma omp for560 for (GoodIter I = begin; I >= end; I = I - 1)561 ++I;562#pragma omp parallel563// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}564#pragma omp for565 for (GoodIter I = begin; I >= end; I = -I)566 ++I;567#pragma omp parallel568// expected-note@+3 {{loop step is expected to be negative due to this condition}}569// expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}570#pragma omp for571 for (GoodIter I = begin; I >= end; I = 2 + I)572 ++I;573#pragma omp parallel574// expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}575#pragma omp for576 for (GoodIter I = begin; I >= end; I = 2 - I)577 ++I;578// In the following example, we cannot update the loop variable using '+='579// expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}}580#pragma omp parallel581#pragma omp for582 for (Iter0 I = begin0; I < end0; ++I)583 ++I;584#pragma omp parallel585// Initializer is constructor without params.586// expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}}587// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}588#pragma omp for589 for (Iter0 I; I < end0; ++I)590 ++I;591 Iter1 begin1, end1;592// expected-error@+4 {{invalid operands to binary expression ('Iter1' and 'Iter1')}}593// expected-error@+3 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}594#pragma omp parallel595#pragma omp for596 for (Iter1 I = begin1; I < end1; ++I)597 ++I;598#pragma omp parallel599// expected-note@+3 {{loop step is expected to be negative due to this condition}}600// expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}601#pragma omp for602 for (Iter1 I = begin1; I >= end1; ++I)603 ++I;604#pragma omp parallel605// expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}}606// expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}607// Initializer is constructor with all default params.608// expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}609#pragma omp for610 for (Iter1 I; I < end1; ++I) {611 }612 GoodIter1 I1, E1;613// expected-error@+4 {{expected an integer or a pointer type of the outer loop counter 'I' for non-rectangular nests}}614// expected-error@+4 {{expected an integer or a pointer type of the outer loop counter 'I' for non-rectangular nests}}615#pragma omp for collapse(3)616 for (GoodIter1 I = I1; I < E1; I++) // expected-note 2 {{'I' declared here}}617 for (int i = (I - I1) * 10 + 25; i < 23; i += 1)618 for (int j = 10 + 25; j < 23 + (I - E1); j += 1)619 ;620 621#pragma omp for622 for (GoodIter1 I = I1; I < E1; I++)623 ;624 return 0;625}626 627template <typename IT, int ST>628class TC {629 int ii, iii, kk;630public:631 enum { myconstant = 42 };632 int ub();633 int dotest_lt(IT begin, IT end) {634#pragma omp parallel635// expected-error@+3 3 {{the loop initializer expression depends on the current loop control variable}}636// expected-error@+2 6 {{the loop condition expression depends on the current loop control variable}}637#pragma omp for638 for (ii = ii * 10 + 25; ii < ii / ii - 23; ii += 1)639 ;640 641// Check that member function calls and enum constants in the condition is642// handled.643#pragma omp for644 for (ii = 0; ii < ub() + this->myconstant; ii += 1) // expected-no-error645 ;646 647#pragma omp parallel648// expected-error@+4 2 {{expected loop invariant expression or '<invariant1> * ii + <invariant2>' kind of expression}}649// expected-error@+3 {{expected loop invariant expression or '<invariant1> * TC::ii + <invariant2>' kind of expression}}650#pragma omp for collapse(2)651 for (ii = 10 + 25; ii < 1000; ii += 1)652 for (iii = ii * 10 + 25; iii < ii / ii - 23; iii += 1)653 ;654 655#pragma omp parallel656// expected-error@+6 {{expected loop invariant expression or '<invariant1> * TC::ii + <invariant2>' kind of expression}}657// expected-error@+6 {{expected loop invariant expression or '<invariant1> * TC::ii + <invariant2>' kind of expression}}658// expected-error@+4 2 {{expected loop invariant expression or '<invariant1> * ii + <invariant2>' kind of expression}}659// expected-error@+4 2 {{expected loop invariant expression or '<invariant1> * ii + <invariant2>' kind of expression}}660#pragma omp for collapse(3)661 for (ii = 10 + 25; ii < 1000; ii += 1)662 for (iii = ii * 10 + 25; iii < ii / ii - 23; iii += 1)663 for (kk = ii * 10 + 25; kk < iii - 23; kk += 1)664 ;665 666#pragma omp parallel667// expected-note@+3 {{loop step is expected to be positive due to this condition}}668// expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}669#pragma omp for670 for (IT I = begin; I < end; I = I + ST) {671 ++I;672 }673#pragma omp parallel674// expected-note@+3 {{loop step is expected to be positive due to this condition}}675// expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}676#pragma omp for677 for (IT I = begin; I <= end; I += ST) {678 ++I;679 }680#pragma omp parallel681#pragma omp for682 for (IT I = begin; I < end; ++I) {683 ++I;684 }685 }686 687 static IT step() {688 return IT(ST);689 }690};691template <typename IT, int ST = 0>692int dotest_gt(IT begin, IT end) {693#pragma omp parallel694// expected-note@+3 2 {{loop step is expected to be negative due to this condition}}695// expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}696#pragma omp for697 for (IT I = begin; I >= end; I = I + ST) {698 ++I;699 }700#pragma omp parallel701// expected-note@+3 2 {{loop step is expected to be negative due to this condition}}702// expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}703#pragma omp for704 for (IT I = begin; I >= end; I += ST) {705 ++I;706 }707 708#pragma omp parallel709// expected-note@+3 {{loop step is expected to be negative due to this condition}}710// expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}711#pragma omp for712 for (IT I = begin; I >= end; ++I) {713 ++I;714 }715 716#pragma omp parallel717#pragma omp for718 for (IT I = begin; I < end; I += TC<int, ST>::step()) {719 ++I;720 }721}722 723void test_with_template() {724 GoodIter begin, end;725 TC<GoodIter, 100> t1;726 TC<GoodIter, -100> t2;727 t1.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, 100>::dotest_lt' requested here}}728 t2.dotest_lt(begin, end); // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}}729 dotest_gt(begin, end); // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}}730 dotest_gt<unsigned, 10>(0, 100); // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}}731}732 733void test_loop_break() {734 const int N = 100;735 float a[N], b[N], c[N];736#pragma omp parallel737#pragma omp for738 for (int i = 0; i < 10; i++) {739 c[i] = a[i] + b[i];740 for (int j = 0; j < 10; ++j) {741 if (a[i] > b[j])742 break; // OK in nested loop743 }744 switch (i) {745 case 1:746 b[i]++;747 break;748 default:749 break;750 }751 if (c[i] > 10)752 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}753 754 if (c[i] > 11)755 break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}756 }757 758#pragma omp parallel759#pragma omp for760 for (int i = 0; i < 10; i++) {761 for (int j = 0; j < 10; j++) {762 c[i] = a[i] + b[i];763 if (c[i] > 10) {764 if (c[i] < 20) {765 break; // OK766 }767 }768 }769 }770}771 772void test_loop_eh() {773 const int N = 100;774 float a[N], b[N], c[N];775#pragma omp parallel776#pragma omp for777 for (int i = 0; i < 10; i++) {778 c[i] = a[i] + b[i];779 try {780 for (int j = 0; j < 10; ++j) {781 if (a[i] > b[j])782 throw a[i];783 }784 throw a[i];785 } catch (float f) {786 if (f > 0.1)787 throw a[i];788 return; // expected-error {{cannot return from OpenMP region}}789 }790 switch (i) {791 case 1:792 b[i]++;793 break;794 default:795 break;796 }797 for (int j = 0; j < 10; j++) {798 if (c[i] > 10)799 throw c[i];800 }801 }802 if (c[9] > 10)803 throw c[9]; // OK804 805#pragma omp parallel806#pragma omp for807 for (int i = 0; i < 10; ++i) {808 struct S {809 void g() { throw 0; }810 };811 }812}813 814void test_loop_firstprivate_lastprivate() {815 S s(4);816#pragma omp parallel817#pragma omp for lastprivate(s) firstprivate(s)818 for (int i = 0; i < 16; ++i)819 ;820}821 822void test_ordered() {823#pragma omp parallel824#pragma omp for ordered ordered // expected-error {{directive '#pragma omp for' cannot contain more than one 'ordered' clause}}825 for (int i = 0; i < 16; ++i)826 ;827}828 829void test_nowait() {830#pragma omp parallel831#pragma omp for nowait nowait // expected-error {{directive '#pragma omp for' cannot contain more than one 'nowait' clause}}832 for (int i = 0; i < 16; ++i)833 ;834}835 836void test_static_data_member() {837#pragma omp parallel838#pragma omp for839 for (int i = 0; i < 16; ++i) {840 class X {841 static int x; // expected-error {{static data member 'x' not allowed in local class 'X'}}842 };843 }844}845 846void test_labeled_break() {847#pragma omp parallel848#pragma omp for849 a: // expected-error {{statement after '#pragma omp for' must be a for loop}}850 for (int i = 0; i < 16; ++i) {851 break a; // expected-error {{'break' statement cannot be used in OpenMP for loop}}852 continue a;853 }854 855 b: while (1) {856#pragma omp parallel857#pragma omp for858 for (int i = 0; i < 16; ++i) {859 break b; // expected-error {{'break' label does not name an enclosing loop or 'switch'}}860 continue b; // expected-error {{'continue' label does not name an enclosing loop}}861 }862 }863}864