From 1b572dd741a674724ce311863e45646a4e4c7179 Mon Sep 17 00:00:00 2001
From: Daniel Arndt <daniel.arndt@iwr.uni-heidelberg.de>
Date: Mon, 23 Apr 2018 15:59:23 +0200
Subject: [PATCH] Avoid uninitialized value in GridIn::read_mesh

---
 source/grid/grid_in.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/source/grid/grid_in.cc b/source/grid/grid_in.cc
index d46cdc11b7..737840fc75 100644
--- a/source/grid/grid_in.cc
+++ b/source/grid/grid_in.cc
@@ -1530,7 +1530,7 @@ void GridIn<dim, spacedim>::read_msh (std::istream &in)
       else if (cell_type == 15)
         {
           // read the indices of nodes given
-          unsigned int node_index;
+          unsigned int node_index = 0;
           switch (gmsh_file_format)
             {
             case 1:
@@ -1544,6 +1544,8 @@ void GridIn<dim, spacedim>::read_msh (std::istream &in)
               in >> node_index;
               break;
             }
+            default:
+              Assert(false, ExcInternalError());
             }
 
           // we only care about boundary indicators assigned to individual
-- 
2.39.5