From fa8b674ef4cb32cb92bcc4f3d42bf24b8cf3b7fb Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 17 Jul 2015 12:53:58 +0200
Subject: Diagnose "composite type used before definition" situations

---
 odb/semantics/elements.cxx | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'odb/semantics/elements.cxx')

diff --git a/odb/semantics/elements.cxx b/odb/semantics/elements.cxx
index 21e3260..43fb379 100644
--- a/odb/semantics/elements.cxx
+++ b/odb/semantics/elements.cxx
@@ -48,6 +48,23 @@ namespace semantics
   //
 
   bool nameable::
+  in_scope (scope_type& s)
+  {
+    for (scope_type* p (&scope ());; p = &p->scope_ ())
+    {
+      //@@ Need to handle namespace extensions.
+      //
+      if (p == &s)
+        return true;
+
+      if (p->global_scope ())
+        break;
+    }
+
+    return false;
+  }
+
+  bool nameable::
   anonymous_ () const
   {
     tree n (tree_node ());
-- 
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