clang/test/OpenMP/master_messages.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 master
   8   argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
   9 }
  10
  11 int foo();
  12
  13 int main() {
  14   #pragma omp master
  15   ;
  16   #pragma omp master nowait // expected-error {{unexpected OpenMP clause 'nowait' in directive '#pragma omp master'}}
  17   #pragma omp master unknown // expected-warning {{extra tokens at the end of '#pragma omp master' are ignored}}
  18   foo();
  19   {
  20     #pragma omp master
  21   } // expected-error {{expected statement}}
  22   #pragma omp for
  23   for (int i = 0; i < 10; ++i) {
  24     foo();
  25     #pragma omp master // expected-error {{region cannot be closely nested inside 'for' region}}
  26     foo();
  27   }
  28   #pragma omp sections
  29   {
  30     foo();
  31     #pragma omp master // expected-error {{region cannot be closely nested inside 'sections' region}}
  32     foo();
  33   }
  34   #pragma omp single
  35   for (int i = 0; i < 10; ++i) {
  36     foo();
  37     #pragma omp master allocate(i) // expected-error {{region cannot be closely nested inside 'single' region}} expected-error {{unexpected OpenMP clause 'allocate' in directive '#pragma omp master'}}
  38     foo();
  39   }
  40   #pragma omp master
  41   for (int i = 0; i < 10; ++i) {
  42     foo();
  43     #pragma omp master
  44     foo();
  45   }
  46   #pragma omp for ordered
  47   for (int i = 0; i < 10; ++i)
  48   #pragma omp master // expected-error {{region cannot be closely nested inside 'for' region}}
  49   {
  50     foo();
  51   }
  52
  53   return 0;
  54 }
  55
  56 int foo() {
  57   L1: // expected-note {{jump exits scope of OpenMP structured block}}
  58     foo();
  59   #pragma omp master
  60   {
  61     foo();
  62     goto L1; // expected-error {{cannot jump from this goto statement to its label}}
  63   }
  64   goto L2; // expected-error {{cannot jump from this goto statement to its label}}
  65   #pragma omp master
  66   { // expected-note {{jump bypasses OpenMP structured block}}
  67     L2:
  68     foo();
  69   }
  70
  71   return 0;
  72 }