track: fixed segfault if user tried to use "add" tool on nonexistant track

2020-05-05 00:36:28 +10:00
parent 63f3e542ee
commit b80eb6fd45
1 changed files with 5 additions and 1 deletions
@@ -57,7 +57,11 @@ const QVector<TrackOutput *> &TrackList::GetTracks() const

 TrackOutput *TrackList::GetTrackAt(int index) const
 {
-  return track_cache_.at(index);
+  if (index < track_cache_.size()) {
+    return track_cache_.at(index);
+  } else {
+    return nullptr;
+  }
 }

 const rational &TrackList::GetTotalLength() const