Merge branch '4.6' of scm.dev.nokia.troll.no:qt/oslo-staging-1 into 4.6-integration

* '4.6' of scm.dev.nokia.troll.no:qt/oslo-staging-1: (49 commits)
  Reverted two commits that were pushed to the wrong branch.
  Use the new QTextCodec api in the QXmlStreamWriter.
  Added new functions to QTextCodec that accept ConversionFlags.
  Fix passing of arguments to syncqt
  doc: Fixed typos.
  Fixes:    Fix spinbox with NoButton style in QGtkStyle
  doc: Explained parameter value defaults where appropriate.
  Cocoa: Fix painting errors on QGLWidget resizing.
  Fix broken QGLWidget::renderPixmap on Mac/Carbon
  Fixes:    Setting any style sheet breaks checkbox positioning
  Fixes:    MenuItem size fixes and missing separator with Gtk+
  Autotest: add a test for QNAM's HTTP cache handling code
  QNAM HTTP: just use the expirationDate in the code that validates the cache
  QNAM HTTP: change the caching semantics to match documentation
  QNAM HTTP: fix the caching algorithm from RFC 2616
  Avoid repeatedly calling LookupAccountSid in QFSFileEngine::owner
  improve readability a bit more
  fix styling; improve readability
  make it possible to retrieve name of the user who owns the file
  Updated WebKit from /home/shausman/src/webkit/trunk to qtwebkit/qtwebkit-4.6 ( 99ccc1c3e4db5354246720f9b9aa3d282e64497d )
  ...

73 files changed, 261 insertions, 140 deletions

diff --git a/src/corelib/io/qabstractfileengine.cpp b/src/corelib/io/qabstractfileengine.cpp
index 7f52f31..e239ee9 100644
--- a/src/corelib/io/qabstractfileengine.cpp
+++ b/src/corelib/io/qabstractfileengine.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qabstractfileengine.h b/src/corelib/io/qabstractfileengine.h
index a867ed7..8ca831a 100644
--- a/src/corelib/io/qabstractfileengine.h
+++ b/src/corelib/io/qabstractfileengine.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qabstractfileengine_p.h b/src/corelib/io/qabstractfileengine_p.h
index f4d7638..e1eba30 100644
--- a/src/corelib/io/qabstractfileengine_p.h
+++ b/src/corelib/io/qabstractfileengine_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qbuffer.cpp b/src/corelib/io/qbuffer.cpp
index 556cf27..c1ff353 100644
--- a/src/corelib/io/qbuffer.cpp
+++ b/src/corelib/io/qbuffer.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qbuffer.h b/src/corelib/io/qbuffer.h
index ab630de..ecbd934 100644
--- a/src/corelib/io/qbuffer.h
+++ b/src/corelib/io/qbuffer.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qdatastream.cpp b/src/corelib/io/qdatastream.cpp
index b10d603..82d3b79 100644
--- a/src/corelib/io/qdatastream.cpp
+++ b/src/corelib/io/qdatastream.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
@@ -592,15 +592,17 @@ void QDataStream::setByteOrder(ByteOrder bo)
     recommend that you do; see \l{Versioning} in the Detailed
     Description.
 
-    In order to accommodate new functionality, the datastream
-    serialization format of some Qt classes has changed in some
-    versions of Qt. If you want to read data that was created by an
-    earlier version of Qt, or write data that can be read by a
-    program that was compiled with an earlier version of Qt, use this
-    function to modify the serialization format used by QDataStream.
+    To accommodate new functionality, the datastream serialization
+    format of some Qt classes has changed in some versions of Qt. If
+    you want to read data that was created by an earlier version of
+    Qt, or write data that can be read by a program that was compiled
+    with an earlier version of Qt, use this function to modify the
+    serialization format used by QDataStream.
 
     \table
     \header \i Qt Version       \i QDataStream Version
+    \row \i Qt 4.6                  \i 12
+    \row \i Qt 4.5                  \i 11
     \row \i Qt 4.4                  \i 10
     \row \i Qt 4.3                  \i 9
     \row \i Qt 4.2                  \i 8
diff --git a/src/corelib/io/qdatastream.h b/src/corelib/io/qdatastream.h
index 2e4e7c1..afc16bc 100644
--- a/src/corelib/io/qdatastream.h
+++ b/src/corelib/io/qdatastream.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qdatastream_p.h b/src/corelib/io/qdatastream_p.h
index 98dd21f..73f73ee 100644
--- a/src/corelib/io/qdatastream_p.h
+++ b/src/corelib/io/qdatastream_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qdebug.cpp b/src/corelib/io/qdebug.cpp
index ce24351..9c54416 100644
--- a/src/corelib/io/qdebug.cpp
+++ b/src/corelib/io/qdebug.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qdebug.h b/src/corelib/io/qdebug.h
index c1c7812..1c68716 100644
--- a/src/corelib/io/qdebug.h
+++ b/src/corelib/io/qdebug.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qdir.cpp b/src/corelib/io/qdir.cpp
index bac508a..dc7f17e 100644
--- a/src/corelib/io/qdir.cpp
+++ b/src/corelib/io/qdir.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qdir.h b/src/corelib/io/qdir.h
index d2b8f0a..6be4922 100644
--- a/src/corelib/io/qdir.h
+++ b/src/corelib/io/qdir.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qdiriterator.cpp b/src/corelib/io/qdiriterator.cpp
index 6247b00..860fb63 100644
--- a/src/corelib/io/qdiriterator.cpp
+++ b/src/corelib/io/qdiriterator.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qdiriterator.h b/src/corelib/io/qdiriterator.h
index ae8f99c..6c4e4aa 100644
--- a/src/corelib/io/qdiriterator.h
+++ b/src/corelib/io/qdiriterator.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfile.cpp b/src/corelib/io/qfile.cpp
index d4077bc..6395cc7 100644
--- a/src/corelib/io/qfile.cpp
+++ b/src/corelib/io/qfile.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
@@ -968,9 +968,6 @@ bool QFile::isSequential() const
     mode, if the relevant file does not already exist, this function
     will try to create a new file before opening it.
 
-    \note Because of limitations in the native API, QFile ignores the
-    Unbuffered flag on Windows.
-
     \sa QIODevice::OpenMode, setFileName()
 */
 bool QFile::open(OpenMode mode)
@@ -988,7 +985,9 @@ bool QFile::open(OpenMode mode)
         qWarning("QIODevice::open: File access not specified");
         return false;
     }
-    if (fileEngine()->open(mode)) {
+
+    // QIODevice provides the buffering, so there's no need to request it from the file engine.
+    if (fileEngine()->open(mode | QIODevice::Unbuffered)) {
         QIODevice::open(mode);
         if (mode & Append)
             seek(size());
@@ -1387,11 +1386,17 @@ QFile::close()
     Q_D(QFile);
     if(!isOpen())
         return;
-    flush();
+    bool flushed = flush();
     QIODevice::close();
 
-    unsetError();
-    if(!fileEngine()->close())
+    // reset write buffer
+    d->lastWasWrite = false;
+    d->writeBuffer.clear();
+
+    // keep earlier error from flush
+    if (fileEngine()->close() && flushed)
+        unsetError();
+    else if (flushed)
         d->setError(fileEngine()->error(), fileEngine()->errorString());
 }
 
diff --git a/src/corelib/io/qfile.h b/src/corelib/io/qfile.h
index f65c845..212576c 100644
--- a/src/corelib/io/qfile.h
+++ b/src/corelib/io/qfile.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfile_p.h b/src/corelib/io/qfile_p.h
index d7a37bf..f8f5f5c 100644
--- a/src/corelib/io/qfile_p.h
+++ b/src/corelib/io/qfile_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfileinfo.cpp b/src/corelib/io/qfileinfo.cpp
index 0a435b9..b4437db 100644
--- a/src/corelib/io/qfileinfo.cpp
+++ b/src/corelib/io/qfileinfo.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfileinfo.h b/src/corelib/io/qfileinfo.h
index 367c250..7e82aed 100644
--- a/src/corelib/io/qfileinfo.h
+++ b/src/corelib/io/qfileinfo.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfileinfo_p.h b/src/corelib/io/qfileinfo_p.h
index f92daa5..065f860 100644
--- a/src/corelib/io/qfileinfo_p.h
+++ b/src/corelib/io/qfileinfo_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher.cpp b/src/corelib/io/qfilesystemwatcher.cpp
index d9b994e..451fbd4 100644
--- a/src/corelib/io/qfilesystemwatcher.cpp
+++ b/src/corelib/io/qfilesystemwatcher.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher.h b/src/corelib/io/qfilesystemwatcher.h
index 9be9bdd..f957d2a 100644
--- a/src/corelib/io/qfilesystemwatcher.h
+++ b/src/corelib/io/qfilesystemwatcher.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_dnotify.cpp b/src/corelib/io/qfilesystemwatcher_dnotify.cpp
index c70232c..1a218c7 100644
--- a/src/corelib/io/qfilesystemwatcher_dnotify.cpp
+++ b/src/corelib/io/qfilesystemwatcher_dnotify.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_dnotify_p.h b/src/corelib/io/qfilesystemwatcher_dnotify_p.h
index e6783c0..ec6bc3f 100644
--- a/src/corelib/io/qfilesystemwatcher_dnotify_p.h
+++ b/src/corelib/io/qfilesystemwatcher_dnotify_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_fsevents.cpp b/src/corelib/io/qfilesystemwatcher_fsevents.cpp
index be2125a..046377e 100644
--- a/src/corelib/io/qfilesystemwatcher_fsevents.cpp
+++ b/src/corelib/io/qfilesystemwatcher_fsevents.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_fsevents_p.h b/src/corelib/io/qfilesystemwatcher_fsevents_p.h
index cafa6c9..b0462b6 100644
--- a/src/corelib/io/qfilesystemwatcher_fsevents_p.h
+++ b/src/corelib/io/qfilesystemwatcher_fsevents_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_inotify.cpp b/src/corelib/io/qfilesystemwatcher_inotify.cpp
index 281b2dd..a7dc8fa 100644
--- a/src/corelib/io/qfilesystemwatcher_inotify.cpp
+++ b/src/corelib/io/qfilesystemwatcher_inotify.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_inotify_p.h b/src/corelib/io/qfilesystemwatcher_inotify_p.h
index fcc9343..4c52afa 100644
--- a/src/corelib/io/qfilesystemwatcher_inotify_p.h
+++ b/src/corelib/io/qfilesystemwatcher_inotify_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_kqueue.cpp b/src/corelib/io/qfilesystemwatcher_kqueue.cpp
index 7ceed27..f088ded 100644
--- a/src/corelib/io/qfilesystemwatcher_kqueue.cpp
+++ b/src/corelib/io/qfilesystemwatcher_kqueue.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_kqueue_p.h b/src/corelib/io/qfilesystemwatcher_kqueue_p.h
index 9efa738..eda646b 100644
--- a/src/corelib/io/qfilesystemwatcher_kqueue_p.h
+++ b/src/corelib/io/qfilesystemwatcher_kqueue_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_p.h b/src/corelib/io/qfilesystemwatcher_p.h
index 32ab21c..e7775a4 100644
--- a/src/corelib/io/qfilesystemwatcher_p.h
+++ b/src/corelib/io/qfilesystemwatcher_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_symbian.cpp b/src/corelib/io/qfilesystemwatcher_symbian.cpp
index d738c18..69daae7 100644
--- a/src/corelib/io/qfilesystemwatcher_symbian.cpp
+++ b/src/corelib/io/qfilesystemwatcher_symbian.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_symbian_p.h b/src/corelib/io/qfilesystemwatcher_symbian_p.h
index edba47c..7e3f045 100644
--- a/src/corelib/io/qfilesystemwatcher_symbian_p.h
+++ b/src/corelib/io/qfilesystemwatcher_symbian_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_win.cpp b/src/corelib/io/qfilesystemwatcher_win.cpp
index 87fe630..249ce0f 100644
--- a/src/corelib/io/qfilesystemwatcher_win.cpp
+++ b/src/corelib/io/qfilesystemwatcher_win.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfilesystemwatcher_win_p.h b/src/corelib/io/qfilesystemwatcher_win_p.h
index 5bf63c4..7d8ab2a 100644
--- a/src/corelib/io/qfilesystemwatcher_win_p.h
+++ b/src/corelib/io/qfilesystemwatcher_win_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfsfileengine.cpp b/src/corelib/io/qfsfileengine.cpp
index c064d5a..c842e49 100644
--- a/src/corelib/io/qfsfileengine.cpp
+++ b/src/corelib/io/qfsfileengine.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfsfileengine.h b/src/corelib/io/qfsfileengine.h
index 48063af..6b077ed 100644
--- a/src/corelib/io/qfsfileengine.h
+++ b/src/corelib/io/qfsfileengine.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfsfileengine_iterator.cpp b/src/corelib/io/qfsfileengine_iterator.cpp
index 059f9b5..7e7d70a 100644
--- a/src/corelib/io/qfsfileengine_iterator.cpp
+++ b/src/corelib/io/qfsfileengine_iterator.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfsfileengine_iterator_p.h b/src/corelib/io/qfsfileengine_iterator_p.h
index f87d668..be670e0 100644
--- a/src/corelib/io/qfsfileengine_iterator_p.h
+++ b/src/corelib/io/qfsfileengine_iterator_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfsfileengine_iterator_unix.cpp b/src/corelib/io/qfsfileengine_iterator_unix.cpp
index adfe47c..b68b1a1 100644
--- a/src/corelib/io/qfsfileengine_iterator_unix.cpp
+++ b/src/corelib/io/qfsfileengine_iterator_unix.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfsfileengine_iterator_win.cpp b/src/corelib/io/qfsfileengine_iterator_win.cpp
index 67da066..7181025 100644
--- a/src/corelib/io/qfsfileengine_iterator_win.cpp
+++ b/src/corelib/io/qfsfileengine_iterator_win.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfsfileengine_p.h b/src/corelib/io/qfsfileengine_p.h
index 41a6a1b..0f63eb8 100644
--- a/src/corelib/io/qfsfileengine_p.h
+++ b/src/corelib/io/qfsfileengine_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfsfileengine_unix.cpp b/src/corelib/io/qfsfileengine_unix.cpp
index ea262bf..722d6d3 100644
--- a/src/corelib/io/qfsfileengine_unix.cpp
+++ b/src/corelib/io/qfsfileengine_unix.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qfsfileengine_win.cpp b/src/corelib/io/qfsfileengine_win.cpp
index a7719a8..bec0075 100644
--- a/src/corelib/io/qfsfileengine_win.cpp
+++ b/src/corelib/io/qfsfileengine_win.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
@@ -1419,22 +1419,20 @@ QAbstractFileEngine::FileFlags QFSFileEnginePrivate::getPermissions() const
 
 #if !defined(QT_NO_LIBRARY)
     if((qt_ntfs_permission_lookup > 0) && ((QSysInfo::WindowsVersion&QSysInfo::WV_NT_based) > QSysInfo::WV_NT)) {
-        PSID pOwner = 0;
-        PSID pGroup = 0;
-        PACL pDacl;
-        PSECURITY_DESCRIPTOR pSD;
-        ACCESS_MASK access_mask;
-
-        enum { ReadMask = 0x00000001, WriteMask = 0x00000002, ExecMask = 0x00000020 };
         resolveLibs();
         if(ptrGetNamedSecurityInfoW && ptrBuildTrusteeWithSidW && ptrGetEffectiveRightsFromAclW) {
+            enum { ReadMask = 0x00000001, WriteMask = 0x00000002, ExecMask = 0x00000020 };
 
             QString fname = filePath.endsWith(QLatin1String(".lnk")) ? readLink(filePath) : filePath;
+            PSID pOwner = 0;
+            PSID pGroup = 0;
+            PACL pDacl;
+            PSECURITY_DESCRIPTOR pSD;
             DWORD res = ptrGetNamedSecurityInfoW((wchar_t*)fname.utf16(), SE_FILE_OBJECT,
                                                  OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION,
                                                  &pOwner, &pGroup, &pDacl, 0, &pSD);
-
             if(res == ERROR_SUCCESS) {
+                ACCESS_MASK access_mask;
                 TRUSTEE_W trustee;
                 { //user
                     if(ptrGetEffectiveRightsFromAclW(pDacl, &currentUserTrusteeW, &access_mask) != ERROR_SUCCESS)
@@ -1720,40 +1718,51 @@ uint QFSFileEngine::ownerId(FileOwner /*own*/) const
 
 QString QFSFileEngine::owner(FileOwner own) const
 {
+    QString name;
 #if !defined(QT_NO_LIBRARY)
     Q_D(const QFSFileEngine);
-    if((qt_ntfs_permission_lookup > 0) && ((QSysInfo::WindowsVersion&QSysInfo::WV_NT_based) > QSysInfo::WV_NT)) {
-	PSID pOwner = 0;
-	PSECURITY_DESCRIPTOR pSD;
-	QString name;
-	QFSFileEnginePrivate::resolveLibs();
-
-	if(ptrGetNamedSecurityInfoW && ptrLookupAccountSidW) {
-	    if(ptrGetNamedSecurityInfoW((wchar_t*)d->filePath.utf16(), SE_FILE_OBJECT,
-					 own == OwnerGroup ? GROUP_SECURITY_INFORMATION : OWNER_SECURITY_INFORMATION,
-					 NULL, &pOwner, NULL, NULL, &pSD) == ERROR_SUCCESS) {
-		DWORD lowner = 0, ldomain = 0;
-		SID_NAME_USE use;
-		// First call, to determine size of the strings (with '\0').
-		ptrLookupAccountSidW(NULL, pOwner, NULL, &lowner, NULL, &ldomain, (SID_NAME_USE*)&use);
-		wchar_t *owner = new wchar_t[lowner];
-		wchar_t *domain = new wchar_t[ldomain];
-		// Second call, size is without '\0'
-		if(ptrLookupAccountSidW(NULL, pOwner, (LPWSTR)owner, &lowner,
-					 (LPWSTR)domain, &ldomain, (SID_NAME_USE*)&use)) {
-		    name = QString::fromUtf16((ushort*)owner);
-		}
-		LocalFree(pSD);
-		delete [] owner;
-		delete [] domain;
-	    }
-	}
-	return name;
+
+    if ((qt_ntfs_permission_lookup > 0) && ((QSysInfo::WindowsVersion&QSysInfo::WV_NT_based) > QSysInfo::WV_NT)) {
+        QFSFileEnginePrivate::resolveLibs();
+        if (ptrGetNamedSecurityInfoW && ptrLookupAccountSidW) {
+            PSID pOwner = 0;
+            PSECURITY_DESCRIPTOR pSD;
+            if (ptrGetNamedSecurityInfoW((wchar_t*)d->filePath.utf16(), SE_FILE_OBJECT,
+                                         own == OwnerGroup ? GROUP_SECURITY_INFORMATION : OWNER_SECURITY_INFORMATION,
+                                         own == OwnerUser ? &pOwner : 0, own == OwnerGroup ? &pOwner : 0,
+                                         0, 0, &pSD) == ERROR_SUCCESS) {
+                DWORD lowner = 64;
+                DWORD ldomain = 64;
+                QVarLengthArray<wchar_t, 64> owner(lowner);
+                QVarLengthArray<wchar_t, 64> domain(ldomain);
+                SID_NAME_USE use = SidTypeUnknown;
+                // First call, to determine size of the strings (with '\0').
+                if (!ptrLookupAccountSidW(NULL, pOwner, (LPWSTR)owner.data(), &lowner,
+                                          (LPWSTR)domain.data(), &ldomain, (SID_NAME_USE*)&use)) {
+                    if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
+                        if (lowner > (DWORD)owner.size())
+                            owner.resize(lowner);
+                        if (ldomain > (DWORD)domain.size())
+                            domain.resize(ldomain);
+                        // Second call, try on resized buf-s
+                        if (!ptrLookupAccountSidW(NULL, pOwner, (LPWSTR)owner.data(), &lowner,
+                                                  (LPWSTR)domain.data(), &ldomain, (SID_NAME_USE*)&use)) {
+                            lowner = 0;
+                        }
+                    } else {
+                        lowner = 0;
+                    }
+                }
+                if (lowner != 0)
+                    name = QString::fromWCharArray(owner.data());
+                LocalFree(pSD);
+            }
+        }
     }
 #else
     Q_UNUSED(own);
 #endif
-    return QString();
+    return name;
 }
 
 bool QFSFileEngine::setPermissions(uint perms)
diff --git a/src/corelib/io/qiodevice.cpp b/src/corelib/io/qiodevice.cpp
index 8dcccb4..4e14ba8 100644
--- a/src/corelib/io/qiodevice.cpp
+++ b/src/corelib/io/qiodevice.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
@@ -970,6 +970,7 @@ QByteArray QIODevice::readAll()
     if (!(d->openMode & Text) && !d->buffer.isEmpty()) {
         result = d->buffer.readAll();
         readBytes = result.size();
+        d->pos += readBytes;
     }
 
     qint64 theSize;
@@ -985,8 +986,8 @@ QByteArray QIODevice::readAll()
     } else {
         // Read it all in one go.
         // If resize fails, don't read anything.
-        result.resize(int(theSize - d->pos));
-        readBytes = read(result.data(), result.size());
+        result.resize(int(readBytes + theSize - d->pos));
+        readBytes += read(result.data() + readBytes, result.size() - readBytes);
     }
 
     if (readBytes <= 0)
diff --git a/src/corelib/io/qiodevice.h b/src/corelib/io/qiodevice.h
index 60ca74c..2f40e66 100644
--- a/src/corelib/io/qiodevice.h
+++ b/src/corelib/io/qiodevice.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qiodevice_p.h b/src/corelib/io/qiodevice_p.h
index f6cbcc7..cc4a237 100644
--- a/src/corelib/io/qiodevice_p.h
+++ b/src/corelib/io/qiodevice_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qnoncontiguousbytedevice.cpp b/src/corelib/io/qnoncontiguousbytedevice.cpp
index a4f59f7..553312c 100644
--- a/src/corelib/io/qnoncontiguousbytedevice.cpp
+++ b/src/corelib/io/qnoncontiguousbytedevice.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qnoncontiguousbytedevice_p.h b/src/corelib/io/qnoncontiguousbytedevice_p.h
index 34d6980..ebd6e24 100644
--- a/src/corelib/io/qnoncontiguousbytedevice_p.h
+++ b/src/corelib/io/qnoncontiguousbytedevice_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qprocess.cpp b/src/corelib/io/qprocess.cpp
index c78af3c..12a992a 100644
--- a/src/corelib/io/qprocess.cpp
+++ b/src/corelib/io/qprocess.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qprocess.h b/src/corelib/io/qprocess.h
index ffcd5de..f84b855 100644
--- a/src/corelib/io/qprocess.h
+++ b/src/corelib/io/qprocess.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qprocess_p.h b/src/corelib/io/qprocess_p.h
index 09be544..60b7b5a 100644
--- a/src/corelib/io/qprocess_p.h
+++ b/src/corelib/io/qprocess_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qprocess_symbian.cpp b/src/corelib/io/qprocess_symbian.cpp
index 1f5117f..ddced73 100644
--- a/src/corelib/io/qprocess_symbian.cpp
+++ b/src/corelib/io/qprocess_symbian.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qprocess_unix.cpp b/src/corelib/io/qprocess_unix.cpp
index f040d16..0bf7d3f 100644
--- a/src/corelib/io/qprocess_unix.cpp
+++ b/src/corelib/io/qprocess_unix.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qprocess_win.cpp b/src/corelib/io/qprocess_win.cpp
index dee0162..f3fc28e 100644
--- a/src/corelib/io/qprocess_win.cpp
+++ b/src/corelib/io/qprocess_win.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qresource.cpp b/src/corelib/io/qresource.cpp
index a061ad1..adfbb15 100644
--- a/src/corelib/io/qresource.cpp
+++ b/src/corelib/io/qresource.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
@@ -1285,7 +1285,7 @@ bool QResourceFileEngine::close()
 
 bool QResourceFileEngine::flush()
 {
-    return false;
+    return true;
 }
 
 qint64 QResourceFileEngine::read(char *data, qint64 len)
diff --git a/src/corelib/io/qresource.h b/src/corelib/io/qresource.h
index 13cd436..cae1989 100644
--- a/src/corelib/io/qresource.h
+++ b/src/corelib/io/qresource.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qresource_iterator.cpp b/src/corelib/io/qresource_iterator.cpp
index e58018c..d5fe828 100644
--- a/src/corelib/io/qresource_iterator.cpp
+++ b/src/corelib/io/qresource_iterator.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qresource_iterator_p.h b/src/corelib/io/qresource_iterator_p.h
index 2047180..67f7ed5 100644
--- a/src/corelib/io/qresource_iterator_p.h
+++ b/src/corelib/io/qresource_iterator_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qresource_p.h b/src/corelib/io/qresource_p.h
index b63ed30..9c49cc6 100644
--- a/src/corelib/io/qresource_p.h
+++ b/src/corelib/io/qresource_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qsettings.cpp b/src/corelib/io/qsettings.cpp
index a1c9833..2c31509 100644
--- a/src/corelib/io/qsettings.cpp
+++ b/src/corelib/io/qsettings.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qsettings.h b/src/corelib/io/qsettings.h
index de33156..38010bf 100644
--- a/src/corelib/io/qsettings.h
+++ b/src/corelib/io/qsettings.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qsettings_mac.cpp b/src/corelib/io/qsettings_mac.cpp
index 8fcaccc..38ab585 100644
--- a/src/corelib/io/qsettings_mac.cpp
+++ b/src/corelib/io/qsettings_mac.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qsettings_p.h b/src/corelib/io/qsettings_p.h
index 5ad72e4..ec345be 100644
--- a/src/corelib/io/qsettings_p.h
+++ b/src/corelib/io/qsettings_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qsettings_win.cpp b/src/corelib/io/qsettings_win.cpp
index f38d72c..de96e06 100644
--- a/src/corelib/io/qsettings_win.cpp
+++ b/src/corelib/io/qsettings_win.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qtemporaryfile.cpp b/src/corelib/io/qtemporaryfile.cpp
index f9e75aa..c34c4a4 100644
--- a/src/corelib/io/qtemporaryfile.cpp
+++ b/src/corelib/io/qtemporaryfile.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qtemporaryfile.h b/src/corelib/io/qtemporaryfile.h
index 67b4704..2270a1f 100644
--- a/src/corelib/io/qtemporaryfile.h
+++ b/src/corelib/io/qtemporaryfile.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qtextstream.cpp b/src/corelib/io/qtextstream.cpp
index 47f340c..9e79894 100644
--- a/src/corelib/io/qtextstream.cpp
+++ b/src/corelib/io/qtextstream.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qtextstream.h b/src/corelib/io/qtextstream.h
index 463924a..d82da59 100644
--- a/src/corelib/io/qtextstream.h
+++ b/src/corelib/io/qtextstream.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qurl.cpp b/src/corelib/io/qurl.cpp
index 6ac6468..1ba5e3f 100644
--- a/src/corelib/io/qurl.cpp
+++ b/src/corelib/io/qurl.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
@@ -4074,7 +4074,7 @@ QString QUrlPrivate::createErrorString()
 
     \sa setUrl(), setEncodedUrl(), fromEncoded(), TolerantMode
 */
-QUrl::QUrl(const QString &url) : d(new QUrlPrivate)
+QUrl::QUrl(const QString &url) : d(0)
 {
     if (!url.isEmpty())
         setUrl(url);
@@ -4087,18 +4087,20 @@ QUrl::QUrl(const QString &url) : d(new QUrlPrivate)
 
     \sa setUrl()
 */
-QUrl::QUrl(const QString &url, ParsingMode parsingMode) : d(new QUrlPrivate)
+QUrl::QUrl(const QString &url, ParsingMode parsingMode) : d(0)
 {
     if (!url.isEmpty())
         setUrl(url, parsingMode);
-    else
+    else {
+        d = new QUrlPrivate;
         d->parsingMode = parsingMode;
+    }
 }
 
 /*!
     Constructs an empty QUrl object.
 */
-QUrl::QUrl() : d(new QUrlPrivate)
+QUrl::QUrl() : d(0)
 {
 }
 
@@ -4107,7 +4109,8 @@ QUrl::QUrl() : d(new QUrlPrivate)
 */
 QUrl::QUrl(const QUrl &other) : d(other.d)
 {
-    d->ref.ref();
+    if (d)
+        d->ref.ref();
 }
 
 /*!
@@ -4115,7 +4118,7 @@ QUrl::QUrl(const QUrl &other) : d(other.d)
 */
 QUrl::~QUrl()
 {
-    if (!d->ref.deref())
+    if (d && !d->ref.deref())
         delete d;
 }
 
@@ -4130,6 +4133,8 @@ QUrl::~QUrl()
 */
 bool QUrl::isValid() const
 {
+    if (!d) return false;
+
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Validated)) d->validate();
 
@@ -4141,6 +4146,8 @@ bool QUrl::isValid() const
 */
 bool QUrl::isEmpty() const
 {
+    if (!d) return true;
+
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed))
         return d->encodedOriginal.isEmpty();
     else
@@ -4161,8 +4168,9 @@ bool QUrl::isEmpty() const
 */
 void QUrl::clear()
 {
-    detach();
-    d->clear();
+    if (d && !d->ref.deref())
+        delete d;
+    d = 0;
 }
 
 /*!
@@ -4261,8 +4269,9 @@ static inline char toHex(quint8 c)
 */
 void QUrl::setEncodedUrl(const QByteArray &encodedUrl, ParsingMode parsingMode)
 {
-    clear();
     QByteArray tmp = encodedUrl;
+    if (!d) d = new QUrlPrivate;
+    else d->clear();
     if ((d->parsingMode = parsingMode) == TolerantMode) {
         // Replace stray % with %25
         QByteArray copy = tmp;
@@ -4336,6 +4345,7 @@ void QUrl::setEncodedUrl(const QByteArray &encodedUrl, ParsingMode parsingMode)
 */
 void QUrl::setScheme(const QString &scheme)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -4351,6 +4361,7 @@ void QUrl::setScheme(const QString &scheme)
 */
 QString QUrl::scheme() const
 {
+    if (!d) return QString();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     return d->scheme;
@@ -4374,6 +4385,8 @@ QString QUrl::scheme() const
 */
 void QUrl::setAuthority(const QString &authority)
 {
+    if (!d) d = new QUrlPrivate;
+
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -4389,6 +4402,8 @@ void QUrl::setAuthority(const QString &authority)
 */
 QString QUrl::authority() const
 {
+    if (!d) return QString();
+
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     return d->authority();
@@ -4409,6 +4424,8 @@ QString QUrl::authority() const
 */
 void QUrl::setUserInfo(const QString &userInfo)
 {
+    if (!d) d = new QUrlPrivate;
+
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -4422,6 +4439,8 @@ void QUrl::setUserInfo(const QString &userInfo)
 */
 QString QUrl::userInfo() const
 {
+    if (!d) return QString();
+
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     return d->userInfo();
@@ -4436,6 +4455,8 @@ QString QUrl::userInfo() const
 */
 void QUrl::setUserName(const QString &userName)
 {
+    if (!d) d = new QUrlPrivate;
+
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -4452,6 +4473,8 @@ void QUrl::setUserName(const QString &userName)
 */
 QString QUrl::userName() const
 {
+    if (!d) return QString();
+
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     d->userInfo();              // causes the unencoded form to be set
@@ -4473,6 +4496,7 @@ QString QUrl::userName() const
 */
 void QUrl::setEncodedUserName(const QByteArray &userName)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -4493,6 +4517,7 @@ void QUrl::setEncodedUserName(const QByteArray &userName)
 */
 QByteArray QUrl::encodedUserName() const
 {
+    if (!d) return QByteArray();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     d->ensureEncodedParts();
@@ -4508,6 +4533,7 @@ QByteArray QUrl::encodedUserName() const
 */
 void QUrl::setPassword(const QString &password)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -4524,6 +4550,7 @@ void QUrl::setPassword(const QString &password)
 */
 QString QUrl::password() const
 {
+    if (!d) return QString();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     d->userInfo();              // causes the unencoded form to be set
@@ -4545,6 +4572,7 @@ QString QUrl::password() const
 */
 void QUrl::setEncodedPassword(const QByteArray &password)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -4565,6 +4593,7 @@ void QUrl::setEncodedPassword(const QByteArray &password)
 */
 QByteArray QUrl::encodedPassword() const
 {
+    if (!d) return QByteArray();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     d->ensureEncodedParts();
@@ -4579,6 +4608,7 @@ QByteArray QUrl::encodedPassword() const
 */
 void QUrl::setHost(const QString &host)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized | QUrlPrivate::HostCanonicalized);
@@ -4592,6 +4622,7 @@ void QUrl::setHost(const QString &host)
 */
 QString QUrl::host() const
 {
+    if (!d) return QString();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     if (d->host.isEmpty() || d->host.at(0) != QLatin1Char('['))
@@ -4645,6 +4676,7 @@ QByteArray QUrl::encodedHost() const
 */
 void QUrl::setPort(int port)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -4662,6 +4694,7 @@ void QUrl::setPort(int port)
 */
 int QUrl::port() const
 {
+    if (!d) return -1;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Validated)) d->validate();
     return d->port;
@@ -4680,6 +4713,7 @@ int QUrl::port() const
 */
 int QUrl::port(int defaultPort) const
 {
+    if (!d) return defaultPort;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     return d->port == -1 ? defaultPort : d->port;
 }
@@ -4699,6 +4733,7 @@ int QUrl::port(int defaultPort) const
 */
 void QUrl::setPath(const QString &path)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -4714,6 +4749,7 @@ void QUrl::setPath(const QString &path)
 */
 QString QUrl::path() const
 {
+    if (!d) return QString();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     if (d->path.isNull()) {
@@ -4745,6 +4781,7 @@ QString QUrl::path() const
 */
 void QUrl::setEncodedPath(const QByteArray &path)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -4765,6 +4802,7 @@ void QUrl::setEncodedPath(const QByteArray &path)
 */
 QByteArray QUrl::encodedPath() const
 {
+    if (!d) return QByteArray();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     d->ensureEncodedParts();
@@ -4780,6 +4818,7 @@ QByteArray QUrl::encodedPath() const
 */
 bool QUrl::hasQuery() const
 {
+    if (!d) return false;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     return d->hasQuery;
@@ -4809,6 +4848,7 @@ bool QUrl::hasQuery() const
 */
 void QUrl::setQueryDelimiters(char valueDelimiter, char pairDelimiter)
 {
+    if (!d) d = new QUrlPrivate;
     detach();
 
     d->valueDelimiter = valueDelimiter;
@@ -4821,6 +4861,7 @@ void QUrl::setQueryDelimiters(char valueDelimiter, char pairDelimiter)
 */
 char QUrl::queryPairDelimiter() const
 {
+    if (!d) return '&';
     return d->pairDelimiter;
 }
 
@@ -4830,6 +4871,7 @@ char QUrl::queryPairDelimiter() const
 */
 char QUrl::queryValueDelimiter() const
 {
+    if (!d) return '=';
     return d->valueDelimiter;
 }
 
@@ -4852,6 +4894,7 @@ char QUrl::queryValueDelimiter() const
 */
 void QUrl::setEncodedQuery(const QByteArray &query)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -4871,6 +4914,7 @@ void QUrl::setEncodedQuery(const QByteArray &query)
 */
 void QUrl::setQueryItems(const QList<QPair<QString, QString> > &query)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
 
@@ -4910,6 +4954,7 @@ void QUrl::setQueryItems(const QList<QPair<QString, QString> > &query)
 */
 void QUrl::setEncodedQueryItems(const QList<QPair<QByteArray, QByteArray> > &query)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
 
@@ -4939,6 +4984,7 @@ void QUrl::setEncodedQueryItems(const QList<QPair<QByteArray, QByteArray> > &que
 */
 void QUrl::addQueryItem(const QString &key, const QString &value)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
 
@@ -4973,6 +5019,7 @@ void QUrl::addQueryItem(const QString &key, const QString &value)
 */
 void QUrl::addEncodedQueryItem(const QByteArray &key, const QByteArray &value)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
 
@@ -4993,6 +5040,7 @@ void QUrl::addEncodedQueryItem(const QByteArray &key, const QByteArray &value)
 */
 QList<QPair<QString, QString> > QUrl::queryItems() const
 {
+    if (!d) return QList<QPair<QString, QString> >();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     QList<QPair<QString, QString> > itemMap;
@@ -5025,6 +5073,7 @@ QList<QPair<QString, QString> > QUrl::queryItems() const
 */
 QList<QPair<QByteArray, QByteArray> > QUrl::encodedQueryItems() const
 {
+    if (!d) return QList<QPair<QByteArray, QByteArray> >();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     QList<QPair<QByteArray, QByteArray> > itemMap;
@@ -5053,6 +5102,7 @@ QList<QPair<QByteArray, QByteArray> > QUrl::encodedQueryItems() const
 */
 bool QUrl::hasQueryItem(const QString &key) const
 {
+    if (!d) return false;
     return hasEncodedQueryItem(toPercentEncoding(key, queryExcludeChars));
 }
 
@@ -5071,6 +5121,7 @@ bool QUrl::hasQueryItem(const QString &key) const
 */
 bool QUrl::hasEncodedQueryItem(const QByteArray &key) const
 {
+    if (!d) return false;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     int pos = 0;
@@ -5093,6 +5144,7 @@ bool QUrl::hasEncodedQueryItem(const QByteArray &key) const
 */
 QString QUrl::queryItemValue(const QString &key) const
 {
+    if (!d) return QString();
     QByteArray tmp = encodedQueryItemValue(toPercentEncoding(key, queryExcludeChars));
     return fromPercentEncodingMutable(&tmp);
 }
@@ -5112,6 +5164,7 @@ QString QUrl::queryItemValue(const QString &key) const
 */
 QByteArray QUrl::encodedQueryItemValue(const QByteArray &key) const
 {
+    if (!d) return QByteArray();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     int pos = 0;
@@ -5135,6 +5188,7 @@ QByteArray QUrl::encodedQueryItemValue(const QByteArray &key) const
 */
 QStringList QUrl::allQueryItemValues(const QString &key) const
 {
+    if (!d) return QStringList();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     QByteArray encodedKey = toPercentEncoding(key, queryExcludeChars);
@@ -5172,6 +5226,7 @@ QStringList QUrl::allQueryItemValues(const QString &key) const
 */
 QList<QByteArray> QUrl::allEncodedQueryItemValues(const QByteArray &key) const
 {
+    if (!d) return QList<QByteArray>();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     QList<QByteArray> values;
@@ -5199,6 +5254,7 @@ QList<QByteArray> QUrl::allEncodedQueryItemValues(const QByteArray &key) const
 */
 void QUrl::removeQueryItem(const QString &key)
 {
+    if (!d) return;
     removeEncodedQueryItem(toPercentEncoding(key, queryExcludeChars));
 }
 
@@ -5217,6 +5273,7 @@ void QUrl::removeQueryItem(const QString &key)
 */
 void QUrl::removeEncodedQueryItem(const QByteArray &key)
 {
+    if (!d) return;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
 
@@ -5243,6 +5300,7 @@ void QUrl::removeEncodedQueryItem(const QByteArray &key)
 */
 void QUrl::removeAllQueryItems(const QString &key)
 {
+    if (!d) return;
     removeAllEncodedQueryItems(toPercentEncoding(key, queryExcludeChars));
 }
 
@@ -5261,6 +5319,7 @@ void QUrl::removeAllQueryItems(const QString &key)
 */
 void QUrl::removeAllEncodedQueryItems(const QByteArray &key)
 {
+    if (!d) return;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
 
@@ -5284,6 +5343,7 @@ void QUrl::removeAllEncodedQueryItems(const QByteArray &key)
 */
 QByteArray QUrl::encodedQuery() const
 {
+    if (!d) return QByteArray();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     return d->query;
@@ -5308,6 +5368,7 @@ QByteArray QUrl::encodedQuery() const
 */
 void QUrl::setFragment(const QString &fragment)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -5324,6 +5385,7 @@ void QUrl::setFragment(const QString &fragment)
 */
 QString QUrl::fragment() const
 {
+    if (!d) return QString();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     if (d->fragment.isNull() && !d->encodedFragment.isNull()) {
@@ -5354,6 +5416,7 @@ QString QUrl::fragment() const
 */
 void QUrl::setEncodedFragment(const QByteArray &fragment)
 {
+    if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
@@ -5375,6 +5438,7 @@ void QUrl::setEncodedFragment(const QByteArray &fragment)
 */
 QByteArray QUrl::encodedFragment() const
 {
+    if (!d) return QByteArray();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     d->ensureEncodedParts();
@@ -5390,6 +5454,7 @@ QByteArray QUrl::encodedFragment() const
 */
 bool QUrl::hasFragment() const
 {
+    if (!d) return false;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     return d->hasFragment;
@@ -5416,6 +5481,8 @@ bool QUrl::hasFragment() const
 */
 QUrl QUrl::resolved(const QUrl &relative) const
 {
+    if (!d) return relative;
+    if (!relative.d) return *this;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     if (!QURL_HASFLAG(relative.d->stateFlags, QUrlPrivate::Parsed))
@@ -5432,6 +5499,7 @@ QUrl QUrl::resolved(const QUrl &relative) const
         if (!relative.authority().isEmpty()) {
             t = relative;
         } else {
+            t.d = new QUrlPrivate;
             if (relative.d->encodedPath.isEmpty()) {
                 t.d->encodedPath = d->encodedPath;
                 t.setEncodedQuery(relative.d->hasQuery ? relative.d->query : d->query);
@@ -5462,6 +5530,7 @@ QUrl QUrl::resolved(const QUrl &relative) const
 */
 bool QUrl::isRelative() const
 {
+    if (!d) return true;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     return d->scheme.isEmpty();
@@ -5476,6 +5545,7 @@ bool QUrl::isRelative() const
 */
 QString QUrl::toString(FormattingOptions options) const
 {
+    if (!d) return QString();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     QString url;
@@ -5527,6 +5597,7 @@ QString QUrl::toString(FormattingOptions options) const
 */
 QByteArray QUrl::toEncoded(FormattingOptions options) const
 {
+    if (!d) return QByteArray();
     return d->toEncoded(options);
 }
 
@@ -5777,7 +5848,9 @@ void QUrl::setIdnWhitelist(const QStringList &list)
 */
 bool QUrl::operator <(const QUrl &url) const
 {
+    if (!d) return url.d ? QByteArray() < url.d->normalized() : false;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
+    if (!url.d) return d->normalized() < QByteArray();
     if (!QURL_HASFLAG(url.d->stateFlags, QUrlPrivate::Parsed)) url.d->parse();
     return d->normalized() < url.d->normalized();
 }
@@ -5788,6 +5861,8 @@ bool QUrl::operator <(const QUrl &url) const
 */
 bool QUrl::operator ==(const QUrl &url) const
 {
+    if (!d) return url.isEmpty();
+    if (!url.d) return isEmpty();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     if (!QURL_HASFLAG(url.d->stateFlags, QUrlPrivate::Parsed)) url.d->parse();
     return d->normalized() == url.d->normalized();
@@ -5807,7 +5882,17 @@ bool QUrl::operator !=(const QUrl &url) const
 */
 QUrl &QUrl::operator =(const QUrl &url)
 {
-    qAtomicAssign(d, url.d);
+    if (!d) {
+        if (url.d) {
+            url.d->ref.ref();
+            d = url.d;
+        }
+    } else {
+        if (url.d)
+            qAtomicAssign(d, url.d);
+        else
+            clear();
+    }
     return *this;
 }
 
@@ -5816,8 +5901,13 @@ QUrl &QUrl::operator =(const QUrl &url)
 */
 QUrl &QUrl::operator =(const QString &url)
 {
-    QUrl tmp(url);
-    qAtomicAssign(d, tmp.d);
+    if (url.isEmpty()) {
+        clear();
+    } else {
+        QUrl tmp(url);
+        if (!d) d = new QUrlPrivate;
+        qAtomicAssign(d, tmp.d);
+    }
     return *this;
 }
 
@@ -5826,14 +5916,19 @@ QUrl &QUrl::operator =(const QString &url)
     Forces a detach.
 */
 void QUrl::detach()
-{ qAtomicDetach(d); }
+{
+    if (!d)
+        d = new QUrlPrivate;
+    else
+        qAtomicDetach(d);
+}
 
 /*!
     \internal
 */
 bool QUrl::isDetached() const
 {
-    return d->ref == 1;
+    return d && d->ref == 1;
 }
 
 
@@ -5875,6 +5970,7 @@ QUrl QUrl::fromLocalFile(const QString &localFile)
 */
 QString QUrl::toLocalFile() const
 {
+    if (!d) return QString();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
     QString tmp;
@@ -5903,9 +5999,15 @@ QString QUrl::toLocalFile() const
 */
 bool QUrl::isParentOf(const QUrl &childUrl) const
 {
+    QString childPath = childUrl.path();
+
+    if (!d)
+        return ((childUrl.scheme().isEmpty())
+            && (childUrl.authority().isEmpty())
+            && childPath.length() > 0 && childPath.at(0) == QLatin1Char('/'));
+
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
 
-    QString childPath = childUrl.path();
     QString ourPath = path();
 
     return ((childUrl.scheme().isEmpty() || d->scheme == childUrl.scheme())
@@ -6145,6 +6247,8 @@ QDebug operator<<(QDebug d, const QUrl &url)
 */
 QString QUrl::errorString() const
 {
+    if (!d)
+        return QLatin1String(QT_TRANSLATE_NOOP(QUrl, "Invalid URL \"\": ")); // XXX not a good message, but the one an empty URL produces
     return d->createErrorString();
 }
 
diff --git a/src/corelib/io/qurl.h b/src/corelib/io/qurl.h
index f76d345..0aa534a 100644
--- a/src/corelib/io/qurl.h
+++ b/src/corelib/io/qurl.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qwindowspipewriter.cpp b/src/corelib/io/qwindowspipewriter.cpp
index 1a2a271..394323f 100644
--- a/src/corelib/io/qwindowspipewriter.cpp
+++ b/src/corelib/io/qwindowspipewriter.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
diff --git a/src/corelib/io/qwindowspipewriter_p.h b/src/corelib/io/qwindowspipewriter_p.h
index 28a3b16..893a165 100644
--- a/src/corelib/io/qwindowspipewriter_p.h
+++ b/src/corelib/io/qwindowspipewriter_p.h
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **