Make node id getter const.

gcc/rust/ChangeLog:

	* ast/rust-ast.h: Node id getter could be const.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

diff --git a/gcc/rust/ast/rust-ast.h b/gcc/rust/ast/rust-ast.h
index dc0fd8b0e4783ee746228f22e643f8f1e3185c3d..35f27e37dcd4e3fd42544025661e7fea582903db 100644 (file)
--- a/gcc/rust/ast/rust-ast.h
+++ b/gcc/rust/ast/rust-ast.h
@@ -1587,7 +1587,7 @@ public:
 
   virtual Kind get_kind () const = 0;
 
-  NodeId get_node_id () { return node_id; }
+  NodeId get_node_id () const { return node_id; }
 
 protected:
   GenericParam () : node_id (Analysis::Mappings::get ().get_next_node_id ()) {}