From 55195a502f5f464866347ce0da8b6a5023c19a9c Mon Sep 17 00:00:00 2001
From: Glenn Maynard <gmaynard@users.sourceforge.net>
Date: Tue, 9 Jan 2007 00:26:56 +0000
Subject: [PATCH] fix crash when GetEndFrame() < m_iPositionFrames due to
 jumped position

---
 stepmania/src/RageSoundReader_Extend.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/stepmania/src/RageSoundReader_Extend.cpp b/stepmania/src/RageSoundReader_Extend.cpp
index 9640132857..1b67de605b 100644
--- a/stepmania/src/RageSoundReader_Extend.cpp
+++ b/stepmania/src/RageSoundReader_Extend.cpp
@@ -49,7 +49,12 @@ int RageSoundReader_Extend::GetData( char *pBuffer, int iFrames )
 {
 	int iFramesToRead = iFrames;
 	if( m_iLengthFrames != -1 )
-		iFramesToRead = min( iFramesToRead, GetEndFrame() - m_iPositionFrames );
+	{
+		int iFramesLeft = GetEndFrame() - m_iPositionFrames;
+		iFramesLeft = max( 0, iFramesLeft );
+		iFramesToRead = min( iFramesToRead, iFramesLeft );
+	}
+
 	if( iFrames && !iFramesToRead )
 		return RageSoundReader::END_OF_FILE;