From 10c73bac51775d70ec2a09ea833c352254e5517c Mon Sep 17 00:00:00 2001
From: David Schulz <david.schulz@qt.io>
Date: Wed, 8 Mar 2017 10:18:34 +0100
Subject: [PATCH] Editor: Fix crash in generic Highlighter for invalid rules

Change-Id: I3da9115ecd54f72256e4ee399b2cd37e31f6bcbe
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>
---
 src/plugins/texteditor/generichighlighter/specificrules.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plugins/texteditor/generichighlighter/specificrules.cpp b/src/plugins/texteditor/generichighlighter/specificrules.cpp
index c24a4391eb7..02e5ed42303 100644
--- a/src/plugins/texteditor/generichighlighter/specificrules.cpp
+++ b/src/plugins/texteditor/generichighlighter/specificrules.cpp
@@ -265,6 +265,9 @@ bool KeywordRule::doMatchSucceed(const QString &text,
                                  const int length,
                                  ProgressData *progress)
 {
+    if (m_list.isNull()) // Happens if a keyword rule points to a none existing keyword list
+        return false;
+
     int current = progress->offset();
 
     if (current > 0 && !definition()->isDelimiter(text.at(current - 1)))