From: Holger Schemel <holger.schemel@virtion.de>
Date: Thu, 1 Oct 2020 19:04:15 +0000 (+0200)
Subject: fixed potential crash bug when loading custom artwork
X-Git-Tag: 4.2.0.3~14
X-Git-Url: https://git.artsoft.org/?a=commitdiff_plain;h=0d46e11e1cb45a68bb9a7031777dc895961975b2;p=rocksndiamonds.git

fixed potential crash bug when loading custom artwork

This patch fixes a memory corruption bug that potentially leads to
program crashes when loading custom artwork (or level sets with custom
artwork) by accessing a potentially invalid bitmap pointer (used for
the global border bitmap).
---

diff --git a/src/tools.c b/src/tools.c
index a4199a14..a041e185 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -1337,6 +1337,9 @@ static void RedrawGlobalBorderIfNeeded(void)
 
 #if ONLY_REDRAW_GLOBAL_BORDER_IF_NEEDED
   if (CheckIfGlobalBorderRedrawIsNeeded())
+#else
+  // determine and store new global border bitmap for current game status
+  global_border_bitmap = getGlobalBorderBitmapFromStatus(game_status);
 #endif
   {
     // redraw global screen border (or clear, if defined to be empty)