X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Ftracetreeitem.cpp;fp=pv%2Fview%2Ftracetreeitem.cpp;h=89bf466788224bb2518abc2fb3f3c9370e11ce6c;hp=fa11e292a7a2ae655fb36502db6fa5ec80cdbeb5;hb=f1a7311612c1289a672074cccca2ce72daf924eb;hpb=cc88566ce77bed57358a82dec5da648feb66d10b

diff --git a/pv/view/tracetreeitem.cpp b/pv/view/tracetreeitem.cpp
index fa11e292..89bf4667 100644
--- a/pv/view/tracetreeitem.cpp
+++ b/pv/view/tracetreeitem.cpp
@@ -122,6 +122,7 @@ int TraceTreeItem::get_visual_y() const
 
 void TraceTreeItem::drag_by(const QPoint &delta)
 {
+	assert(owner_);
 	force_to_v_offset(drag_point_.y() + delta.y() -
 		owner_->owner_visual_v_offset());
 }