From e0f3ce9cf02b6c0392ce65cf22f655b5dde8b649 Mon Sep 17 00:00:00 2001
From: Christopher Lackner <clackner@cerbsim.com>
Date: Tue, 22 Jun 2021 11:57:30 +0200
Subject: [PATCH] fix loading of short mesh file names

---
 libsrc/interface/nginterface.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libsrc/interface/nginterface.cpp b/libsrc/interface/nginterface.cpp
index d38b7234..525ed035 100644
--- a/libsrc/interface/nginterface.cpp
+++ b/libsrc/interface/nginterface.cpp
@@ -150,7 +150,7 @@ void Ng_LoadMesh (const char * filename, ngcore::NgMPI_Comm comm)
     mesh->SetCommunicator(comm);
     
     string fn(filename);
-    if (fn.substr (fn.length()-8, 8) == ".vol.bin")
+    if (fn.length() > 8 && fn.substr (fn.length()-8, 8) == ".vol.bin")
       {
         mesh -> Load(fn);
         SetGlobalMesh (mesh);