From 3e5d8280fadb8cf98a181c65c08d0c43be7af912 Mon Sep 17 00:00:00 2001
From: Martin Kiewitz
Date: Tue, 29 Dec 2009 21:37:26 +0000
Subject: SCI: dont crash when scripts are trying to access invalid memory
 (fixes intro of lb2cd)

svn-id: r46718
---
 engines/sci/engine/segment.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/engines/sci/engine/segment.cpp b/engines/sci/engine/segment.cpp
index 9f934a3f1d..991a56a8cf 100644
--- a/engines/sci/engine/segment.cpp
+++ b/engines/sci/engine/segment.cpp
@@ -264,7 +264,10 @@ SegmentRef LocalVariables::dereference(reg_t pointer) {
 	SegmentRef ret;
 	ret.isRaw = false;	// reg_t based data!
 	ret.maxSize = (_locals.size() - pointer.offset/2) * 2;
-	ret.raw = (byte *)&_locals[pointer.offset/2];
+	if (ret.maxSize > 0)
+		ret.raw = (byte *)&_locals[pointer.offset/2];
+	else
+		warning("LocalVariables::dereference: Offset at end or out of bounds %04x:%04x", PRINT_REG(pointer));
 	return ret;
 }
 
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