From 11d801df865019c3d3dd60a329111cc85c5dac4a Mon Sep 17 00:00:00 2001
From: Joachim Schmitz <jojo@schmitz-digital.de>
Date: Thu, 6 Jun 2019 09:43:44 +0200
Subject: [PATCH] fix #290094: Crash when modifying appoggiatura from imported
 MusicXml file.

---
 libmscore/note.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libmscore/note.cpp b/libmscore/note.cpp
index d76051aaa7289..c571a51e960e3 100644
--- a/libmscore/note.cpp
+++ b/libmscore/note.cpp
@@ -3108,9 +3108,10 @@ std::vector<Note*> Note::tiedNotes() const
 
       notes.push_back(note);
       while (note->tieFor()) {
-            if (std::find(notes.begin(), notes.end(), note->tieFor()->endNote()) != notes.end())
+            Note* endNote = note->tieFor()->endNote();
+            if (!endNote || std::find(notes.begin(), notes.end(), endNote) != notes.end())
                   break;
-            note = note->tieFor()->endNote();
+            note = endNote;
             notes.push_back(note);
             }
       return notes;