From 9d3354369e697322e4e7b216462f6e71fb8a8711 Mon Sep 17 00:00:00 2001
From: Kilian Weishaupt <kilian.weishaupt@iws.uni-stuttgart.de>
Date: Thu, 23 Aug 2018 09:31:06 +0200
Subject: [PATCH] [test][subgridmanager] Use template argument instead of auto
 in operator()

* fixes clang compiler error
---
 test/io/gridmanager/test_gridmanager_subgrid.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/test/io/gridmanager/test_gridmanager_subgrid.cc b/test/io/gridmanager/test_gridmanager_subgrid.cc
index 370c2f82cd..64153525af 100644
--- a/test/io/gridmanager/test_gridmanager_subgrid.cc
+++ b/test/io/gridmanager/test_gridmanager_subgrid.cc
@@ -42,7 +42,8 @@ public:
     CircleSelector(const GlobalPosition& center) : center_(center) {}
 
     //! Select all elements within a circle around a center point.
-    int operator() (const auto& element) const
+    template<class Element>
+    int operator() (const Element& element) const
     {
         const auto x = element.geometry().center()[0];
         const auto y = element.geometry().center()[1];
-- 
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