From 0994ffc19518899ab2b7759b1c9726be0dbd1418 Mon Sep 17 00:00:00 2001
From: Torsten Dreyer <Torsten@t3r.de>
Date: Tue, 5 Oct 2010 22:39:41 +0200
Subject: [PATCH] Don't crash in strutils::trim() with empty strings

---
 simgear/misc/strutils.cxx | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/simgear/misc/strutils.cxx b/simgear/misc/strutils.cxx
index be05d692..cc56aa41 100644
--- a/simgear/misc/strutils.cxx
+++ b/simgear/misc/strutils.cxx
@@ -131,10 +131,9 @@ namespace simgear {
 	static string
 	do_strip( const string& s, int striptype )
 	{
-	    //     if (s.empty())
-	    //      return s;
-
 	    string::size_type len = s.length();
+	    if( len == 0 ) // empty string is trivial
+		return s;
 	    string::size_type i = 0;
 	    if (striptype != RIGHTSTRIP)
 	    {
-- 
2.39.5