From b91a2eb37bb4607e5c07b271bac53d90fc20d3ec Mon Sep 17 00:00:00 2001
From: Martin Kronbichler <kronbichler@lnm.mw.tum.de>
Date: Fri, 15 May 2020 12:32:16 +0200
Subject: [PATCH] Fix warning in step-70

---
 examples/step-70/step-70.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/step-70/step-70.cc b/examples/step-70/step-70.cc
index f5ca8c633f..a58d28eb70 100644
--- a/examples/step-70/step-70.cc
+++ b/examples/step-70/step-70.cc
@@ -677,7 +677,7 @@ namespace Step70
     using map_type  = std::map<types::manifold_id, std::string>;
     using Converter = Patterns::Tools::Convert<map_type>;
 
-    for (const auto pair : Converter::to_value(ids_and_cad_file_names))
+    for (const auto &pair : Converter::to_value(ids_and_cad_file_names))
       {
         const auto &manifold_id   = pair.first;
         const auto &cad_file_name = pair.second;
-- 
2.39.5