Merge remote-tracking branch 'origin/5.9' into 5.11

 Conflicts:
	.qmake.conf
	src/corelib/animation/qvariantanimation.cpp
	src/corelib/global/qglobal.cpp
	src/corelib/global/qlogging.cpp
	src/corelib/io/qprocess_win.cpp
	src/corelib/json/qjsonarray.cpp
	src/corelib/tools/qsimd_p.h
	src/corelib/tools/qtimezoneprivate_p.h
	src/corelib/xml/qxmlstream_p.h
	src/gui/kernel/qsimpledrag.cpp
	src/gui/kernel/qsimpledrag_p.h
	src/plugins/generic/generic.pro
	src/plugins/platforms/cocoa/qcocoamenu.mm
	src/widgets/styles/qmacstyle_mac.mm
	tests/auto/concurrent/qtconcurrentmap/BLACKLIST
	tests/auto/corelib/io/qfileinfo/tst_qfileinfo.cpp
	tests/auto/corelib/tools/qdatetime/tst_qdatetime.cpp
	tests/auto/gui/kernel/qwindow/BLACKLIST
	tests/auto/widgets/dialogs/qmessagebox/BLACKLIST

Change-Id: I508d686cf20f7f8cc6a7119b9bc7c3bbb505c58e

1 files changed, 2 insertions, 12 deletions

diff --git a/src/xml/sax/qxml.cpp b/src/xml/sax/qxml.cpp
index b781176e13..168e8c3cb4 100644
--- a/src/xml/sax/qxml.cpp
+++ b/src/xml/sax/qxml.cpp
@@ -1270,18 +1270,8 @@ void QXmlInputSource::fetchData()
         } else if (device->isOpen() || device->open(QIODevice::ReadOnly)) {
             rawData.resize(BufferSize);
             qint64 size = device->read(rawData.data(), BufferSize);
-
-            if (size != -1) {
-                // We don't want to give fromRawData() less than four bytes if we can avoid it.
-                while (size < 4) {
-                    if (!device->waitForReadyRead(-1))
-                        break;
-                    int ret = device->read(rawData.data() + size, BufferSize - size);
-                    if (ret <= 0)
-                        break;
-                    size += ret;
-                }
-            }
+            if (size == 0 && device->waitForReadyRead(-1))
+                size = device->read(rawData.data(), BufferSize);
 
             rawData.resize(qMax(qint64(0), size));
         }