From 09931ae0aa11aafa8ad6324a92fafd1fbcd678af Mon Sep 17 00:00:00 2001
From: Paul Gilbert
Date: Sat, 16 Sep 2017 14:09:28 -0400
Subject: TITANIC: Fixed FixedQueue compaction when queue has been emptied

---
 engines/titanic/support/fixed_queue.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'engines/titanic')

diff --git a/engines/titanic/support/fixed_queue.h b/engines/titanic/support/fixed_queue.h
index a7ba6eac2c..dbcbeb669c 100644
--- a/engines/titanic/support/fixed_queue.h
+++ b/engines/titanic/support/fixed_queue.h
@@ -80,7 +80,8 @@ public:
 	 */
 	void compact() {
 		if (_data.size() == MAX_SIZE && _topIndex > 0) {
-			Common::copy(&_data[_topIndex], &_data[0] + MAX_SIZE, &_data[0]);
+			if (_topIndex < MAX_SIZE)
+				Common::copy(&_data[_topIndex], &_data[0] + MAX_SIZE, &_data[0]);
 			_data.resize(size());
 			_topIndex = 0;
 		}
-- 
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