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      1 // RUN: %clang_cc1 -verify -fopenmp %s
      2 
      3 namespace X {
      4 int x;
      5 };
      6 
      7 struct B {
      8   static int ib; // expected-note {{'B::ib' declared here}}
      9   static int bfoo() { return 8; }
     10 };
     11 
     12 int bfoo() { return 4; }
     13 
     14 int z;
     15 const int C1 = 1;
     16 const int C2 = 2;
     17 void test_linear_colons() {
     18   int B = 0;
     19 #pragma omp parallel for linear(B : bfoo())
     20   for (int i = 0; i < 10; ++i)
     21     ;
     22 // expected-error@+1 {{unexpected ':' in nested name specifier; did you mean '::'}}
     23 #pragma omp parallel for linear(B::ib : B : bfoo())
     24   for (int i = 0; i < 10; ++i)
     25     ;
     26 // expected-error@+1 {{use of undeclared identifier 'ib'; did you mean 'B::ib'}}
     27 #pragma omp parallel for linear(B : ib)
     28   for (int i = 0; i < 10; ++i)
     29     ;
     30 // expected-error@+1 {{unexpected ':' in nested name specifier; did you mean '::'?}}
     31 #pragma omp parallel for linear(z : B : ib)
     32   for (int i = 0; i < 10; ++i)
     33     ;
     34 #pragma omp parallel for linear(B : B::bfoo())
     35   for (int i = 0; i < 10; ++i)
     36     ;
     37 #pragma omp parallel for linear(X::x : ::z)
     38   for (int i = 0; i < 10; ++i)
     39     ;
     40 #pragma omp parallel for linear(B, ::z, X::x)
     41   for (int i = 0; i < 10; ++i)
     42     ;
     43 #pragma omp parallel for linear(::z)
     44   for (int i = 0; i < 10; ++i)
     45     ;
     46 // expected-error@+1 {{expected variable name}}
     47 #pragma omp parallel for linear(B::bfoo())
     48   for (int i = 0; i < 10; ++i)
     49     ;
     50 #pragma omp parallel for linear(B::ib, B : C1 + C2)
     51   for (int i = 0; i < 10; ++i)
     52     ;
     53 }
     54 
     55 template <int L, class T, class N>
     56 T test_template(T *arr, N num) {
     57   N i;
     58   T sum = (T)0;
     59   T ind2 = -num * L; // expected-note {{'ind2' defined here}}
     60 // expected-error@+1 {{argument of a linear clause should be of integral or pointer type}}
     61 #pragma omp parallel for linear(ind2 : L)
     62   for (i = 0; i < num; ++i) {
     63     T cur = arr[(int)ind2];
     64     ind2 += L;
     65     sum += cur;
     66   }
     67   return T();
     68 }
     69 
     70 template <int LEN>
     71 int test_warn() {
     72   int ind2 = 0;
     73 // expected-warning@+1 {{zero linear step (ind2 should probably be const)}}
     74 #pragma omp parallel for linear(ind2 : LEN)
     75   for (int i = 0; i < 100; i++) {
     76     ind2 += LEN;
     77   }
     78   return ind2;
     79 }
     80 
     81 struct S1; // expected-note 2 {{declared here}} expected-note 2 {{forward declaration of 'S1'}}
     82 extern S1 a;
     83 class S2 {
     84   mutable int a;
     85 
     86 public:
     87   S2() : a(0) {}
     88 };
     89 const S2 b; // expected-note 2 {{'b' defined here}}
     90 const S2 ba[5];
     91 class S3 {
     92   int a;
     93 
     94 public:
     95   S3() : a(0) {}
     96 };
     97 const S3 ca[5];
     98 class S4 {
     99   int a;
    100   S4();
    101 
    102 public:
    103   S4(int v) : a(v) {}
    104 };
    105 class S5 {
    106   int a;
    107   S5() : a(0) {}
    108 
    109 public:
    110   S5(int v) : a(v) {}
    111 };
    112 
    113 S3 h;
    114 #pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
    115 
    116 template <class I, class C>
    117 int foomain(I argc, C **argv) {
    118   I e(4);
    119   I g(5);
    120   int i;
    121   int &j = i;
    122 #pragma omp parallel for linear // expected-error {{expected '(' after 'linear'}}
    123   for (int k = 0; k < argc; ++k)
    124     ++k;
    125 #pragma omp parallel for linear( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
    126   for (int k = 0; k < argc; ++k)
    127     ++k;
    128 #pragma omp parallel for linear() // expected-error {{expected expression}}
    129   for (int k = 0; k < argc; ++k)
    130     ++k;
    131 #pragma omp parallel for linear(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
    132   for (int k = 0; k < argc; ++k)
    133     ++k;
    134 #pragma omp parallel for linear(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
    135   for (int k = 0; k < argc; ++k)
    136     ++k;
    137 #pragma omp parallel for linear(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
    138   for (int k = 0; k < argc; ++k)
    139     ++k;
    140 #pragma omp parallel for linear(argc : 5)
    141   for (int k = 0; k < argc; ++k)
    142     ++k;
    143 #pragma omp parallel for linear(S1) // expected-error {{'S1' does not refer to a value}}
    144   for (int k = 0; k < argc; ++k)
    145     ++k;
    146 // expected-error@+2 {{linear variable with incomplete type 'S1'}}
    147 // expected-error@+1 {{const-qualified variable cannot be linear}}
    148 #pragma omp parallel for linear(a, b : B::ib)
    149   for (int k = 0; k < argc; ++k)
    150     ++k;
    151 #pragma omp parallel for linear(argv[1]) // expected-error {{expected variable name}}
    152   for (int k = 0; k < argc; ++k)
    153     ++k;
    154 #pragma omp parallel for linear(e, g)
    155   for (int k = 0; k < argc; ++k)
    156     ++k;
    157 #pragma omp parallel for linear(h) // expected-error {{threadprivate or thread local variable cannot be linear}}
    158   for (int k = 0; k < argc; ++k)
    159     ++k;
    160 #pragma omp parallel for linear(i)
    161   for (int k = 0; k < argc; ++k)
    162     ++k;
    163 #pragma omp parallel
    164   {
    165     int v = 0;
    166     int i;
    167 #pragma omp parallel for linear(v : i)
    168     for (int k = 0; k < argc; ++k) {
    169       i = k;
    170       v += i;
    171     }
    172   }
    173 #pragma omp parallel for linear(j)
    174   for (int k = 0; k < argc; ++k)
    175     ++k;
    176   int v = 0;
    177 #pragma omp parallel for linear(v : j)
    178   for (int k = 0; k < argc; ++k) {
    179     ++k;
    180     v += j;
    181   }
    182 #pragma omp parallel for linear(i)
    183   for (int k = 0; k < argc; ++k)
    184     ++k;
    185   return 0;
    186 }
    187 
    188 namespace A {
    189 double x;
    190 #pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
    191 }
    192 namespace C {
    193 using A::x;
    194 }
    195 
    196 int main(int argc, char **argv) {
    197   double darr[100];
    198   // expected-note@+1 {{in instantiation of function template specialization 'test_template<-4, double, int>' requested here}}
    199   test_template<-4>(darr, 4);
    200   // expected-note@+1 {{in instantiation of function template specialization 'test_warn<0>' requested here}}
    201   test_warn<0>();
    202 
    203   S4 e(4); // expected-note {{'e' defined here}}
    204   S5 g(5); // expected-note {{'g' defined here}}
    205   int i;
    206   int &j = i;
    207 #pragma omp parallel for linear // expected-error {{expected '(' after 'linear'}}
    208   for (int k = 0; k < argc; ++k)
    209     ++k;
    210 #pragma omp parallel for linear( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
    211   for (int k = 0; k < argc; ++k)
    212     ++k;
    213 #pragma omp parallel for linear() // expected-error {{expected expression}}
    214   for (int k = 0; k < argc; ++k)
    215     ++k;
    216 #pragma omp parallel for linear(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
    217   for (int k = 0; k < argc; ++k)
    218     ++k;
    219 #pragma omp parallel for linear(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
    220   for (int k = 0; k < argc; ++k)
    221     ++k;
    222 #pragma omp parallel for linear(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
    223   for (int k = 0; k < argc; ++k)
    224     ++k;
    225 #pragma omp parallel for linear(argc)
    226   for (int k = 0; k < argc; ++k)
    227     ++k;
    228 #pragma omp parallel for linear(S1) // expected-error {{'S1' does not refer to a value}}
    229   for (int k = 0; k < argc; ++k)
    230     ++k;
    231 // expected-error@+2 {{linear variable with incomplete type 'S1'}}
    232 // expected-error@+1 {{const-qualified variable cannot be linear}}
    233 #pragma omp parallel for linear(a, b)
    234   for (int k = 0; k < argc; ++k)
    235     ++k;
    236 #pragma omp parallel for linear(argv[1]) // expected-error {{expected variable name}}
    237   for (int k = 0; k < argc; ++k)
    238     ++k;
    239 // expected-error@+2 {{argument of a linear clause should be of integral or pointer type, not 'S4'}}
    240 // expected-error@+1 {{argument of a linear clause should be of integral or pointer type, not 'S5'}}
    241 #pragma omp parallel for linear(e, g)
    242   for (int k = 0; k < argc; ++k)
    243     ++k;
    244 #pragma omp parallel for linear(h, C::x) // expected-error 2 {{threadprivate or thread local variable cannot be linear}}
    245   for (int k = 0; k < argc; ++k)
    246     ++k;
    247 #pragma omp parallel
    248   {
    249     int i;
    250 #pragma omp parallel for linear(i)
    251     for (int k = 0; k < argc; ++k)
    252       ++k;
    253 #pragma omp parallel for linear(i : 4)
    254     for (int k = 0; k < argc; ++k) {
    255       ++k;
    256       i += 4;
    257     }
    258   }
    259 #pragma omp parallel for linear(j)
    260   for (int k = 0; k < argc; ++k)
    261     ++k;
    262 #pragma omp parallel for linear(i)
    263   for (int k = 0; k < argc; ++k)
    264     ++k;
    265 
    266   foomain<int, char>(argc, argv); // expected-note {{in instantiation of function template specialization 'foomain<int, char>' requested here}}
    267   return 0;
    268 }
    269 
    270