From 4a693e91db2c16260577b9186ca458814f425012 Mon Sep 17 00:00:00 2001
From: Ivan Donchevskii <ivan.donchevskii@qt.io>
Date: Tue, 11 Dec 2018 09:40:50 +0100
Subject: [PATCH] ClangFormat: Fix the return value for the line offset

Return -1 for the lines which do not exist in the document.

Change-Id: Ieccb2121f7db260bf72b36886d1f820af01cca0d
Reviewed-by: Marco Bubke <marco.bubke@qt.io>
---
 src/libs/utils/textutils.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/libs/utils/textutils.cpp b/src/libs/utils/textutils.cpp
index d102de794ad..f72dd89321c 100644
--- a/src/libs/utils/textutils.cpp
+++ b/src/libs/utils/textutils.cpp
@@ -142,6 +142,9 @@ QTextCursor wordStartCursor(const QTextCursor &textCursor)
 
 int utf8NthLineOffset(const QTextDocument *textDocument, const QByteArray &buffer, int line)
 {
+    if (textDocument->blockCount() < line)
+        return -1;
+
     if (textDocument->characterCount() == buffer.size() + 1)
         return textDocument->findBlockByNumber(line - 1).position();