ktexteditor-5.26.0-runtime-crash.patch

From: Dominik Haumann <dhaumann@kde.org>
Date: Thu, 08 Sep 2016 13:32:39 +0000
Subject: Fix crash: Make sure the display cursor is valid after text folding
X-Git-Url: http://quickgit.kde.org/?p=ktexteditor.git&a=commitdiff&h=09a1e864d54735ebcab6bf31198fdef969b92a67
---
Fix crash: Make sure the display cursor is valid after text folding

This bug existed at least since KDE 4.3 (2009), took a long time to track it down.

FIXED-IN: KDE Frameworks 5.27
BUG: 367466
Differential-Revision: https://phabricator.kde.org/D2709
---


--- a/src/view/kateviewinternal.cpp
+++ b/src/view/kateviewinternal.cpp
@@ -709,6 +709,10 @@
 
         // set cursor to start of folding region
         updateCursor(foldingRange.start(), true);
+    } else {
+        // force an update of the cursor, since otherwise the m_displayCursor
+        // line may be below the total amount of visible lines.
+        updateCursor(m_cursor, true);
     }
 
     updateView();
@@ -1515,6 +1519,9 @@
         m_view->completionWidget()->cursorUp();
         return;
     }
+
+    // assert that the display cursor is in visible lines
+    Q_ASSERT(m_displayCursor.line() < m_view->textFolding().visibleLines());
 
     /**
      * move cursor to start of line, if we are at first line!