From 3db43d99f5574fe8f89b902809dc0108f469fa2b Mon Sep 17 00:00:00 2001
From: Marc Sabatella <marc@outsideshore.com>
Date: Wed, 24 Apr 2019 13:14:02 -0600
Subject: [PATCH] fix #288190: crash on drag&drop barline

---
 libmscore/barline.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libmscore/barline.cpp b/libmscore/barline.cpp
index 6f8dcf0ae4da..003b6a1df03e 100644
--- a/libmscore/barline.cpp
+++ b/libmscore/barline.cpp
@@ -307,7 +307,11 @@ BarLine::~BarLine()
 QPointF BarLine::canvasPos() const
       {
       QPointF pos = Element::canvasPos();
-      pos.ry() += measure()->system()->staff(staffIdx())->y();
+      if (parent()) {
+            System* system = measure()->system();
+            qreal yoff = system ? system->staff(staffIdx())->y() : 0.0;
+            pos.ry() += yoff;
+            }
       return pos;
       }