[flang] [OpenMP] Common block name symbol is not found (with the prefix "Internal")

[sscalpone]

The OpenMP spec may allow "a common block name (enclosed in slashes)."

% cat foo.f90
  common /c/ x
  real :: x
  !$omp flush(/c/)
end
% flang foo.f90
% flang -fopenmp foo.f90
flang-21: warning: OpenMP support in flang is still experimental [-Wexperimental-option]
error: Semantic errors in foo.f90
./foo.f90:3:16: error: Internal: no symbol found for 'c'
    !$omp flush(/c/)
                 ^

Does the Internal signal that this is not-yet-implemented? If so, please change the message to include the phrase "not yet implemented:". Thanks!

[llvmbot]

@llvm/issue-subscribers-flang-frontend

Author: Steve Scalpone (sscalpone)

The OpenMP spec may allow "a common block name (enclosed in slashes)." ``` % cat foo.f90 common /c/ x real :: x !$omp flush(/c/) end % flang foo.f90 % flang -fopenmp foo.f90 flang-21: warning: OpenMP support in flang is still experimental [-Wexperimental-option] error: Semantic errors in foo.f90 ./foo.f90:3:16: error: Internal: no symbol found for 'c' !$omp flush(/c/) ^ ``` Does the `Internal` signal that this is not-yet-implemented? If so, please change the message to include the phrase "not yet implemented:". Thanks!