From 060c7e71571d1e35b621e14224be217ab95cf571 Mon Sep 17 00:00:00 2001
From: Marc-Philip <marc-philip.werner@sap.com>
Date: Mon, 19 Jun 2017 13:09:36 +0200
Subject: [PATCH] fix illegal memory access

---
 src/common/wxcrt.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/common/wxcrt.cpp b/src/common/wxcrt.cpp
index 3071e58edc..8a1e427fa1 100644
--- a/src/common/wxcrt.cpp
+++ b/src/common/wxcrt.cpp
@@ -685,7 +685,8 @@ int wxVsnprintf(wchar_t *str, size_t size, const wxString& format, va_list argpt
 
     // VsnprintfTestCase reveals that glibc's implementation of vswprintf
     // doesn't nul terminate on truncation.
-    str[size - 1] = 0;
+    if ( size )
+        str[size - 1] = 0;
 
     return rv;
 }