From d86f552a76059364ded77bbf6656b6530775169a Mon Sep 17 00:00:00 2001
From: Markus Blatt <markus@dr-blatt.de>
Date: Wed, 5 Oct 2016 10:40:52 +0200
Subject: [PATCH] Added missing const reference to constructor argument

---
 opm/simulators/ParallelFileMerger.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/opm/simulators/ParallelFileMerger.hpp b/opm/simulators/ParallelFileMerger.hpp
index 48dce78e9..98d8754cc 100644
--- a/opm/simulators/ParallelFileMerger.hpp
+++ b/opm/simulators/ParallelFileMerger.hpp
@@ -46,7 +46,7 @@ public:
     /// \brief Constructor
     /// \param output_dir The output directory to use for reading/Writing.
     /// \param deckanme The name of the deck.
-    ParallelFileMerger(fs::path output_dir,
+    ParallelFileMerger(const fs::path& output_dir,
                        const std::string& deckname)
         : debugFileRegex_("\\."+deckname+"\\.\\d+\\.DEBUG"),
           logFileRegex_(deckname+"\\.\\d+\\.PRT")