clang/test/OpenMP/parallel_masked_message.cpp

   1 // RUN: %clang_cc1 -verify -fopenmp %s -Wuninitialized
   2
   3 // RUN: %clang_cc1 -verify -fopenmp-simd %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 masked
   8   argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
   9 }
  10
  11 #pragma omp parallel masked // expected-error {{unexpected OpenMP directive '#pragma omp parallel masked'}}
  12
  13 int foo() {
  14   return 0;
  15 }
  16
  17 int a;
  18 struct S;
  19 S& bar();
  20 int main(int argc, char **argv) {
  21   #pragma omp parallel masked nowait // expected-error {{unexpected OpenMP clause 'nowait' in directive '#pragma omp parallel masked'}}
  22   #pragma omp parallel masked unknown // expected-warning {{extra tokens at the end of '#pragma omp parallel masked' are ignored}}
  23   foo();
  24   {
  25     #pragma omp masked
  26   } // expected-error {{expected statement}}
  27   {
  28     #pragma omp parallel masked
  29   } // expected-error {{expected statement}}
  30
  31   S &s = bar();
  32   int tid = 0;
  33   #pragma omp parallel masked filter(tid)
  34   (void)&s;
  35   #pragma omp parallel masked { // expected-warning {{extra tokens at the end of '#pragma omp parallel masked' are ignored}}
  36   foo();
  37   #pragma omp parallel masked ( // expected-warning {{extra tokens at the end of '#pragma omp parallel masked' are ignored}}
  38   foo();
  39   #pragma omp parallel masked [ // expected-warning {{extra tokens at the end of '#pragma omp parallel masked' are ignored}}
  40   foo();
  41   #pragma omp parallel masked ] // expected-warning {{extra tokens at the end of '#pragma omp parallel masked' are ignored}}
  42   foo();
  43   #pragma omp parallel masked ) // expected-warning {{extra tokens at the end of '#pragma omp parallel masked' are ignored}}
  44   foo();
  45   #pragma omp parallel masked } // expected-warning {{extra tokens at the end of '#pragma omp parallel masked' are ignored}}
  46   foo();
  47   #pragma omp parallel masked
  48   // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel masked' are ignored}}
  49   #pragma omp parallel masked unknown()
  50   foo();
  51   L1:
  52     foo();
  53   #pragma omp parallel masked
  54   ;
  55   #pragma omp parallel masked
  56   {
  57
  58   for (int i = 0; i < 10; ++i) {
  59     switch(argc) {
  60      case (0):
  61       #pragma omp parallel masked
  62       {
  63         foo();
  64         break; // expected-error {{'break' statement not in loop or switch statement}}
  65         continue; // expected-error {{'continue' statement not in loop statement}}
  66       }
  67       default:
  68        break;
  69     }
  70   }
  71     goto L1; // expected-error {{use of undeclared label 'L1'}}
  72     argc++;
  73   }
  74 #pragma omp parallel masked default(none) // expected-note 2 {{explicit data sharing attribute requested here}}
  75   {
  76     ++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
  77     ++a;    // expected-error {{variable 'a' must have explicitly specified data sharing attributes}}
  78   }
  79
  80   goto L2; // expected-error {{use of undeclared label 'L2'}}
  81   #pragma omp parallel masked
  82   L2:
  83   foo();
  84   #pragma omp parallel masked
  85   {
  86     return 1; // expected-error {{cannot return from OpenMP region}}
  87   }
  88   return 0;
  89 }