From acb0de658018a6554c965b08fceff0ed2810aef7 Mon Sep 17 00:00:00 2001
From: Sven Hesse
Date: Sat, 13 Jun 2009 22:35:22 +0000
Subject: Warn when a sprite operation is to be performed on a nonexistent
 surface instead of crashing

svn-id: r41499
---
 engines/gob/draw_v2.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'engines')

diff --git a/engines/gob/draw_v2.cpp b/engines/gob/draw_v2.cpp
index 40ae45a1f8..86b8794f1c 100644
--- a/engines/gob/draw_v2.cpp
+++ b/engines/gob/draw_v2.cpp
@@ -705,6 +705,11 @@ void Draw_v2::spriteOperation(int16 operation) {
 	sourceSurf = _spritesArray[_sourceSurface];
 	destSurf = _spritesArray[_destSurface];
 
+	if (!destSurf) {
+		warning("Can't do operation %d on surface %d: nonexistent", operation, _destSurface);
+		return;
+	}
+
 	switch (operation) {
 	case DRAW_BLITSURF:
 	case DRAW_DRAWLETTER:
-- 
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