From 8eecbf377caddb0cf5b48e021c0b24fafb3713d9 Mon Sep 17 00:00:00 2001
From: Richard Roberts <richard.jw.roberts@gmail.com>
Date: Thu, 15 Aug 2013 14:12:42 +0000
Subject: [PATCH] Fixed passing temporary as non-const reference that doesn't
 compile on GCC

---
 gtsam/base/treeTraversal-inst.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gtsam/base/treeTraversal-inst.h b/gtsam/base/treeTraversal-inst.h
index a90121738..a8896b45d 100644
--- a/gtsam/base/treeTraversal-inst.h
+++ b/gtsam/base/treeTraversal-inst.h
@@ -113,7 +113,8 @@ namespace gtsam {
           {
             BOOST_FOREACH(const boost::shared_ptr<NODE>& child, node->children)
             {
-              processNode(child, visitorPre(child, myData));
+              DATA childData = visitorPre(child, myData);
+              processNode(child, childData);
             }
           }