From bffd4da8b66bd8e72aae0302b7b70d5344a8578f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luk=C3=A1=C5=A1=20Lalinsk=C3=BD?= <lalinsky@gmail.com>
Date: Sat, 24 Oct 2009 12:45:58 +0000
Subject: [PATCH] Return NULL/false rather than crash when accessing file
 attributes in FileRef

BUG:209417


git-svn-id: svn://anonsvn.kde.org/home/kde/trunk/kdesupport/taglib@1039724 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
---
 taglib/fileref.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/taglib/fileref.cpp b/taglib/fileref.cpp
index 93a72407..e5d0feaf 100644
--- a/taglib/fileref.cpp
+++ b/taglib/fileref.cpp
@@ -29,6 +29,7 @@
 
 #include <tfile.h>
 #include <tstring.h>
+#include <tdebug.h>
 
 #include "fileref.h"
 #include "asffile.h"
@@ -93,11 +94,19 @@ FileRef::~FileRef()
 
 Tag *FileRef::tag() const
 {
+  if(isNull()) {
+    debug("FileRef::tag() - Called without a valid file.");
+    return 0;
+  }
   return d->file->tag();
 }
 
 AudioProperties *FileRef::audioProperties() const
 {
+  if(isNull()) {
+    debug("FileRef::audioProperties() - Called without a valid file.");
+    return 0;
+  }
   return d->file->audioProperties();
 }
 
@@ -108,6 +117,10 @@ File *FileRef::file() const
 
 bool FileRef::save()
 {
+  if(isNull()) {
+    debug("FileRef::save() - Called without a valid file.");
+    return false;
+  }
   return d->file->save();
 }