From 9e64bca8a6de5b5987fb3016357068ce3c9f5892 Mon Sep 17 00:00:00 2001
From: Ingo Weyrich <heckflosse@users.noreply.github.com>
Date: Tue, 16 Oct 2018 00:38:41 +0200
Subject: [PATCH] Update main.cc

Fixes #4869
---
 rtgui/main.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rtgui/main.cc b/rtgui/main.cc
index f345fecc8..8dc6b615c 100644
--- a/rtgui/main.cc
+++ b/rtgui/main.cc
@@ -131,7 +131,7 @@ int processLineParams ( int argc, char **argv )
         currParam = currParam.substr (1, currParam.length() - 2);
 #endif
 
-        if ( currParam.at (0) == '-' ) {
+        if ( currParam.at (0) == '-' && currParam.size() > 1 ) {
             switch ( currParam.at (1) ) {
 #ifdef WIN32