Merge branch 'qt-master-from-4.7' of scm.dev.nokia.troll.no:qt/qt-integration into master-integration

* 'qt-master-from-4.7' of scm.dev.nokia.troll.no:qt/qt-integration: (166 commits)
  Fix the include header <qstring.h> -> <QtCore/qstring.h>
  bye bye QMakeProjectEnv
  short-cut evaluation inside if() tests
  eliminate special splitting of INCLUDEPATH and DEPENDPATH
  do not env-expand cache file path
  s/QMAKE_FRAMEWORKDIR_FLAGS/QMAKE_FRAMEWORKPATH_FLAGS/
  s/INCPATH/INCLUDEPATH/
  s/QMAKE_RPATH/QMAKE_LFLAGS_RPATH/
  teach configure QMAKE_LFLAGS_RPATH (in addition to obsolete QMAKE_RPATH)
  warn about usage of deprecated variables
  warn about using non-lowercased replace $$function()s
  add -Wdeprecated option (on by default)
  make QMakeProject::isEmpty() consider legacy mappings
  document some functions' scope
  fix $$size() not using function-scoped variables
  doc: Fixed some qdoc errors.
  qdoc: Added breadcrumbs for namespaces.
  Autotest: check that we receive key events on toplevel widgets
  Cocoa: key events stopped working
  Fix desktopservices demo missing icon in Symbian
  ...

1 files changed, 6 insertions, 7 deletions

diff --git a/src/corelib/io/qiodevice.cpp b/src/corelib/io/qiodevice.cpp
index f2cef4e1..bb11d6b 100644
--- a/src/corelib/io/qiodevice.cpp
+++ b/src/corelib/io/qiodevice.cpp
@@ -755,7 +755,6 @@ qint64 QIODevice::bytesToWrite() const
 qint64 QIODevice::read(char *data, qint64 maxSize)
 {
     Q_D(QIODevice);
-    CHECK_READABLE(read, qint64(-1));
 
 #if defined QIODEVICE_DEBUG
     printf("%p QIODevice::read(%p, %d), d->pos = %d, d->buffer.size() = %d\n",
@@ -786,13 +785,13 @@ qint64 QIODevice::read(char *data, qint64 maxSize)
     do {
         // Try reading from the buffer.
         int lastReadChunkSize = d->buffer.read(data, maxSize);
-        *d->pPos += lastReadChunkSize;
-        readSoFar += lastReadChunkSize;
-        // fast exit when satisfied by buffer
-        if (lastReadChunkSize == maxSize && !(d->openMode & Text))
-            return readSoFar;
-
         if (lastReadChunkSize > 0) {
+            *d->pPos += lastReadChunkSize;
+            readSoFar += lastReadChunkSize;
+            // fast exit when satisfied by buffer
+            if (lastReadChunkSize == maxSize && !(d->openMode & Text))
+                return readSoFar;
+
             data += lastReadChunkSize;
             maxSize -= lastReadChunkSize;
 #if defined QIODEVICE_DEBUG