From: Richard Heck <rgheck@comcast.net>
Date: Fri, 3 Apr 2009 16:04:45 +0000 (+0000)
Subject: Add a comment.
X-Git-Tag: 2.0.0~6959
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=46c5596462005c0a59aa4e8cde5211d8eb282845;p=features.git

Add a comment.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@29056 a592a061-630c-0410-9148-cb99ea01b6c8
---

diff --git a/src/Buffer.cpp b/src/Buffer.cpp
index e0998f8330..888f820728 100644
--- a/src/Buffer.cpp
+++ b/src/Buffer.cpp
@@ -228,6 +228,9 @@ public:
 	/// This is here to force the test to be done whenever parent_buffer
 	/// is accessed.
 	Buffer const * parent() const { 
+		// if parent_buffer is not loaded, then it has been unloaded,
+		// which means that parent_buffer is an invalid pointer. So we
+		// set it to null in that case.
 		if (!theBufferList().isLoaded(parent_buffer))
 			parent_buffer = 0;
 		return parent_buffer;