From 1a19afc3e21343d0c1defd437ca20a9144fe1736 Mon Sep 17 00:00:00 2001
From: Eike Ziller <eike.ziller@qt.io>
Date: Wed, 4 Oct 2017 13:30:25 +0200
Subject: [PATCH] DocumentModel: Add safeguard

It should never happen, but in the worst case do not
crash anyhow.

Task-number: QTCREATORBUG-19011
Change-Id: I9cd6f26929bf090262845b72d59a0654ad4eefff
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
---
 src/plugins/coreplugin/editormanager/documentmodel.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/plugins/coreplugin/editormanager/documentmodel.cpp b/src/plugins/coreplugin/editormanager/documentmodel.cpp
index 10960e47934..fb6bf689493 100644
--- a/src/plugins/coreplugin/editormanager/documentmodel.cpp
+++ b/src/plugins/coreplugin/editormanager/documentmodel.cpp
@@ -367,6 +367,7 @@ DocumentModel::Entry *DocumentModelPrivate::removeEditor(IEditor *editor)
     QTC_ASSERT(d->m_editors.contains(document), return nullptr);
     d->m_editors[document].removeAll(editor);
     DocumentModel::Entry *entry = DocumentModel::entryForDocument(document);
+    QTC_ASSERT(entry, return nullptr);
     if (d->m_editors.value(document).isEmpty()) {
         d->m_editors.remove(document);
         entry->document = new IDocument;