From b9a8f19bb493c1070d6f7b355f3265782971d2d0 Mon Sep 17 00:00:00 2001
From: dscho <dscho>
Date: Fri, 14 Jan 2005 14:35:00 +0000
Subject: [PATCH] fix segfault when trying to write outside of frameBuffer

---
 libvncserver/font.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libvncserver/font.c b/libvncserver/font.c
index 515b506..120ef7b 100755
--- a/libvncserver/font.c
+++ b/libvncserver/font.c
@@ -24,7 +24,7 @@ int rfbDrawChar(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,
 	d=*data;
 	data++;
       }
-      if(d&0x80)
+      if(d&0x80 && y+j>=0 && x+i>=0 && y+j<rfbScreen->height && x+i<rfbScreen->width)
 	memcpy(rfbScreen->frameBuffer+(y+j)*rowstride+(x+i)*bpp,colour,bpp);
       d<<=1;
     }