visibility: Add create_private() static function

When parsing a visibility in `parse_visibility`, it is not an error to
not have a pub token: It simply means we want to create a private
visibility. If we had C++14 or another language, we could instead
represent all visibilities as an optional<AST::Visibility> where the
Visibility class would not need to change. But I think the best course
of action for our case is to instead keep visibilities even when they
are private and have a special case in the `VisKind` enumeration.

1 files changed, 1 insertions, 1 deletions

diff --git a/gcc/rust/parse/rust-parse-impl.h b/gcc/rust/parse/rust-parse-impl.h
index 48c39de..d320f0b 100644
--- a/gcc/rust/parse/rust-parse-impl.h
+++ b/gcc/rust/parse/rust-parse-impl.h
@@ -2121,7 +2121,7 @@ Parser<ManagedTokenSource>::parse_visibility ()
   // check for no visibility
   if (lexer.peek_token ()->get_id () != PUB)
     {
-      return AST::Visibility::create_error ();
+      return AST::Visibility::create_private ();
     }
 
   lexer.skip_token ();