[gcc r14-7892] gccrs: nr2.0: Add macros 2.0 in Ribs in TopLevel visitor

[Arthur Cohen]

https://gcc.gnu.org/g:8ea51b5c81fd4ff602eff4ab0e526699b87dde8c

commit r14-7892-g8ea51b5c81fd4ff602eff4ab0e526699b87dde8c
Author: Arthur Cohen <arthur.cohen@embecosm.com>
Date:   Wed Aug 2 12:53:20 2023 +0200

    gccrs: nr2.0: Add macros 2.0 in Ribs in TopLevel visitor
    
    gcc/rust/ChangeLog:
    
            * resolve/rust-toplevel-name-resolver-2.0.cc (TopLevel::visit): Declare
            macros in the current rib if they are macros 2.0.

Diff:
---
 gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc b/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc
index 2c0e0779acd..c28d9227003 100644
--- a/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc
+++ b/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc
@@ -86,7 +86,8 @@ TopLevel::visit (AST::MacroRulesDefinition &macro)
 {
   // we do not insert macros in the current rib as that needs to be done in the
   // textual scope of the Early pass. we only insert them in the root of the
-  // crate if they are marked with #[macro_export]
+  // crate if they are marked with #[macro_export]. The execption to this is
+  // macros 2.0, which get resolved and inserted like regular items.
 
   if (is_macro_export (macro))
     {
@@ -103,6 +104,9 @@ TopLevel::visit (AST::MacroRulesDefinition &macro)
 			 macro.get_rule_name ().as_string ().c_str ());
 	}
     }
+
+  if (macro.get_kind () == AST::MacroRulesDefinition::MacroKind::DeclMacro)
+    insert_or_error_out (macro.get_rule_name (), macro, Namespace::Macros);
 }
 
 void