clang/test/OpenMP/masked_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 masked
   8   argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
   9 }
  10
  11 void yyy(int argc) {
  12   int x; // expected-note {{initialize the variable 'x' to silence this warning}}
  13 #pragma omp masked filter(1)
  14   argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
  15 }
  16
  17 int foo();
  18
  19 int main() {
  20   #pragma omp masked
  21   ;
  22   #pragma omp masked filter(1) filter(2) // expected-error {{directive '#pragma omp masked' cannot contain more than one 'filter' clause}}
  23   ;
  24   int x,y,z;
  25   #pragma omp masked filter(x) filter(y) filter(z) // expected-error 2 {{directive '#pragma omp masked' cannot contain more than one 'filter' clause}}
  26   ;
  27   #pragma omp masked nowait // expected-error {{unexpected OpenMP clause 'nowait' in directive '#pragma omp masked'}}
  28   #pragma omp masked unknown // expected-warning {{extra tokens at the end of '#pragma omp masked' are ignored}}
  29   foo();
  30   {
  31     #pragma omp masked
  32   } // expected-error {{expected statement}}
  33   {
  34     #pragma omp masked filter(2)
  35   } // expected-error {{expected statement}}
  36   #pragma omp for
  37   for (int i = 0; i < 10; ++i) {
  38     foo();
  39     #pragma omp masked filter(1) // expected-error {{region cannot be closely nested inside 'for' region}}
  40     foo();
  41   }
  42   #pragma omp sections
  43   {
  44     foo();
  45     #pragma omp masked // expected-error {{region cannot be closely nested inside 'sections' region}}
  46     foo();
  47   }
  48   #pragma omp single
  49   for (int i = 0; i < 10; ++i) {
  50     foo();
  51     #pragma omp masked allocate(i) // expected-error {{region cannot be closely nested inside 'single' region}} expected-error {{unexpected OpenMP clause 'allocate' in directive '#pragma omp masked'}}
  52     foo();
  53   }
  54   #pragma omp masked
  55   for (int i = 0; i < 10; ++i) {
  56     foo();
  57     #pragma omp masked
  58     foo();
  59   }
  60   #pragma omp for ordered
  61   for (int i = 0; i < 10; ++i)
  62   #pragma omp masked // expected-error {{region cannot be closely nested inside 'for' region}}
  63   {
  64     foo();
  65   }
  66
  67   return 0;
  68 }
  69
  70 int foo() {
  71   L1: // expected-note {{jump exits scope of OpenMP structured block}}
  72     foo();
  73   #pragma omp masked filter(0)
  74   {
  75     foo();
  76     goto L1; // expected-error {{cannot jump from this goto statement to its label}}
  77   }
  78   goto L2; // expected-error {{cannot jump from this goto statement to its label}}
  79   #pragma omp masked filter(-2)
  80   { // expected-note {{jump bypasses OpenMP structured block}}
  81     L2:
  82     foo();
  83   }
  84
  85   return 0;
  86 }