From ba69cf5f0d916c4fdc943f2171691e074417f2e8 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 4 May 2020 15:30:25 +0200
Subject: Skip lambda type declarations injected into namespace scope

---
 odb/parser.cxx | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/odb/parser.cxx b/odb/parser.cxx
index 7286fca..69d9b28 100644
--- a/odb/parser.cxx
+++ b/odb/parser.cxx
@@ -890,15 +890,23 @@ collect (tree ns)
     {
     case TYPE_DECL:
       {
-        if (DECL_NAME (decl) != NULL_TREE)
-          decls_.insert (decl);
+        // Skip special type declarations.
+        //
+        if (DECL_NAME (decl) == NULL_TREE)
+          continue;
 
+        tree type (TREE_TYPE (decl));
+        if (LAMBDA_TYPE_P (type))
+          continue;
+
+        decls_.insert (decl);
         break;
       }
     case TEMPLATE_DECL:
       {
         if (DECL_CLASS_TEMPLATE_P (decl))
           decls_.insert (decl);
+
         break;
       }
     default:
-- 
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