From: Richard Kimberly Heck <rikiheck@lyx.org>
Date: Thu, 14 Jan 2021 19:17:51 +0000 (-0500)
Subject: Fix crash reported by Kornel.
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=e7b9aa672f0fcb61676702e90facabbfa900ddec;p=features.git

Fix crash reported by Kornel.

See https://marc.info/?l=lyx-devel&m=161058233016780&w=2.

Internal Buffers do not have TOCs associated with them, so we should
not try to update them. This fixes Kornel's crash, but there may be
other instances of the problem.
---

diff --git a/src/Cursor.cpp b/src/Cursor.cpp
index 939b92bd98..074047f490 100644
--- a/src/Cursor.cpp
+++ b/src/Cursor.cpp
@@ -2471,6 +2471,9 @@ void Cursor::setCurrentFont()
 
 void Cursor::checkBufferStructure()
 {
+	if (buffer()->isInternal())
+		return;
+
 	Buffer const * master = buffer()->masterBuffer();
 	master->tocBackend().updateItem(*this);
 	if (master != buffer() && !master->hasGuiDelegate())