in automationPattern::valueAt() check whether the time-map is empty

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1236 0778d3d1-df1d-0410-868b-ea421aaaa00d
2008-06-30 16:54:54 +00:00
parent 4274c51dae
commit 884c9222ba
1 changed files with 4 additions and 0 deletions
--- a/src/core/automation_pattern.cpp
+++ b/src/core/automation_pattern.cpp
@@ -218,6 +218,10 @@ void automationPattern::openInAutomationEditor( void )

 float automationPattern::valueAt( const midiTime & _time )
 {
+	if( m_timeMap.isEmpty() )
+	{
+		return( 0 );
+	}
 	timeMap::const_iterator v = m_timeMap.lowerBound( _time );
 	return( ( v != m_timeMap.end() ) ? v.value() : (v-1).value() );
 }