Fixed alt + left or right causing a crash in PianoRoll (#7390)

LMMS · Jul 24, 2024 · 99c30ea · 99c30ea
1 parent 2f5f12a
commit 99c30ea
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/tracks/MidiClip.cpp b/src/tracks/MidiClip.cpp
@@ -473,8 +473,9 @@ MidiClip *  MidiClip::nextMidiClip() const
 MidiClip * MidiClip::adjacentMidiClipByOffset(int offset) const
 {
 	auto& clips = m_instrumentTrack->getClips();
-	int clipNum = m_instrumentTrack->getClipNum(this);
-	return dynamic_cast<MidiClip*>(clips[clipNum + offset]);
+	int clipNum = m_instrumentTrack->getClipNum(this) + offset;
+	if (clipNum < 0 || static_cast<size_t>(clipNum) >= clips.size()) { return nullptr; }
+	return dynamic_cast<MidiClip*>(clips[clipNum]);
 }