clang/test/OpenMP/parallel_sections_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 xxx(int argc) {
   6   int x; // expected-note {{initialize the variable 'x' to silence this warning}}
   7 #pragma omp parallel sections
   8 {
   9   argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
  10 }
  11 }
  12
  13 void foo() {
  14 }
  15
  16 #pragma omp parallel sections // expected-error {{unexpected OpenMP directive '#pragma omp parallel sections'}}
  17
  18 int main(int argc, char **argv) {
  19 #pragma omp parallel sections {// expected-warning {{extra tokens at the end of '#pragma omp parallel sections' are ignored}}
  20   {
  21     foo();
  22   }
  23 #pragma omp parallel sections( // expected-warning {{extra tokens at the end of '#pragma omp parallel sections' are ignored}}
  24   {
  25     foo();
  26   }
  27 #pragma omp parallel sections[ // expected-warning {{extra tokens at the end of '#pragma omp parallel sections' are ignored}}
  28   {
  29     foo();
  30   }
  31 #pragma omp parallel sections] // expected-warning {{extra tokens at the end of '#pragma omp parallel sections' are ignored}}
  32   {
  33     foo();
  34   }
  35 #pragma omp parallel sections) // expected-warning {{extra tokens at the end of '#pragma omp parallel sections' are ignored}}
  36   {
  37     foo();
  38   }
  39 #pragma omp parallel sections } // expected-warning {{extra tokens at the end of '#pragma omp parallel sections' are ignored}}
  40   {
  41     foo();
  42   }
  43 // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel sections' are ignored}}
  44 #pragma omp parallel sections unknown()
  45   {
  46     foo();
  47 #pragma omp section
  48   L1:
  49     foo();
  50   }
  51 #pragma omp parallel sections
  52   {
  53     ;
  54   }
  55 #pragma omp parallel sections
  56   {
  57     goto L1; // expected-error {{use of undeclared label 'L1'}}
  58   }
  59
  60   for (int i = 0; i < 10; ++i) {
  61     switch (argc) {
  62     case (0):
  63 #pragma omp parallel sections
  64     {
  65       foo();
  66       break;    // expected-error {{'break' statement not in loop or switch statement}}
  67       continue; // expected-error {{'continue' statement not in loop statement}}
  68     }
  69     default:
  70       break;
  71     }
  72   }
  73 #pragma omp parallel sections default(none) // expected-note {{explicit data sharing attribute requested here}}
  74   {
  75     ++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
  76   }
  77
  78   goto L2; // expected-error {{use of undeclared label 'L2'}}
  79 #pragma omp parallel sections
  80   {
  81   L2:
  82     foo();
  83   }
  84 #pragma omp parallel sections
  85   {
  86     return 1; // expected-error {{cannot return from OpenMP region}}
  87   }
  88
  89   [[]] // expected-error {{an attribute list cannot appear here}}
  90 #pragma omp parallel sections
  91   {
  92   }
  93
  94   return 0;
  95 }