clang/test/OpenMP/parallel_messages.cpp

   1 // RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
   2
   3 // RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
   4
   5 void foo() {
   6 }
   7
   8 void xxx(int argc) {
   9   int x; // expected-note {{initialize the variable 'x' to silence this warning}}
  10 #pragma omp parallel
  11   argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
  12 }
  13
  14 #pragma omp parallel // expected-error {{unexpected OpenMP directive '#pragma omp parallel'}}
  15
  16 int a;
  17 struct S;
  18 S& bar();
  19 int main(int argc, char **argv) {
  20   S &s = bar();
  21   #pragma omp parallel
  22   (void)&s;
  23   #pragma omp parallel { // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
  24   foo();
  25   #pragma omp parallel ( // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
  26   foo();
  27   #pragma omp parallel [ // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
  28   foo();
  29   #pragma omp parallel ] // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
  30   foo();
  31   #pragma omp parallel ) // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
  32   foo();
  33   #pragma omp parallel } // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
  34   foo();
  35   #pragma omp parallel
  36   // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel' are ignored}}
  37   #pragma omp parallel unknown()
  38   foo();
  39   L1:
  40     foo();
  41   #pragma omp parallel ordered // expected-error {{unexpected OpenMP clause 'ordered' in directive '#pragma omp parallel'}}
  42     ;
  43   #pragma omp parallel
  44   ;
  45   #pragma omp parallel
  46   {
  47     goto L1; // expected-error {{use of undeclared label 'L1'}}
  48     argc++;
  49   }
  50
  51   for (int i = 0; i < 10; ++i) {
  52     switch(argc) {
  53      case (0):
  54       #pragma omp parallel
  55       {
  56         foo();
  57         break; // expected-error {{'break' statement not in loop or switch statement}}
  58         continue; // expected-error {{'continue' statement not in loop statement}}
  59       }
  60       default:
  61        break;
  62     }
  63   }
  64 #pragma omp parallel default(none) // expected-note 2 {{explicit data sharing attribute requested here}}
  65   {
  66     ++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
  67     ++a;    // expected-error {{variable 'a' must have explicitly specified data sharing attributes}}
  68   }
  69
  70   goto L2; // expected-error {{use of undeclared label 'L2'}}
  71   #pragma omp parallel
  72   L2:
  73   foo();
  74   #pragma omp parallel
  75   {
  76     return 1; // expected-error {{cannot return from OpenMP region}}
  77   }
  78
  79   [[]] // expected-error {{an attribute list cannot appear here}}
  80   #pragma omp parallel
  81   for (int n = 0; n < 100; ++n) {}
  82
  83   return 0;
  84 }
  85
  86 struct a {
  87   static constexpr int b = 0;
  88 };
  89 template <bool> struct c;
  90 template <typename d, typename e> bool operator<(d, e);
  91 struct f {
  92   int cbegin;
  93 };
  94 class g {
  95   f blocks;
  96   void j();
  97 };
  98 template <typename> struct is_error_code_enum : a {};
  99 struct h {
 100   template <typename i, typename = c<is_error_code_enum<i>::b>> h(i);
 101 };
 102 h operator<(h, h);
 103 void g::j() {
 104 #pragma omp parallel for default(none) if(a::b)
 105   for (auto a = blocks.cbegin; a < blocks; ++a) // expected-error 2 {{invalid operands to binary expression ('f' and 'int')}}
 106     ;
 107 }