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diff --git a/src/corelib/io/qdebug_p.h b/src/corelib/io/qdebug_p.h
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+++ b/src/corelib/io/qdebug_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDEBUG_P_H
+#define QDEBUG_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtCore/qdebug.h"
+#include "QtCore/qmetaobject.h"
+#include "QtCore/qflags.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace QtDebugUtils {
+
+// inline helpers for formatting basic classes.
+
+template <class Point>
+static inline void formatQPoint(QDebug &debug, const Point &point)
+{
+    debug << point.x() << ',' << point.y();
+}
+
+template <class Size>
+static inline void formatQSize(QDebug &debug, const Size &size)
+{
+    debug << size.width() << ", " << size.height();
+}
+
+template <class Rect>
+static inline void formatQRect(QDebug &debug, const Rect &rect)
+{
+    debug << rect.x() << ',' << rect.y() << ' ' << rect.width() << 'x' << rect.height();
+}
+
+template <class Margins>
+static inline void formatQMargins(QDebug &debug, const Margins &margins)
+{
+    debug << margins.left() << ", " << margins.top() << ", " << margins.right()
+        << ", " << margins.bottom();
+}
+
+#ifndef QT_NO_QOBJECT
+template <class QEnum>
+static inline void formatQEnum(QDebug &debug, QEnum value)
+{
+    const QMetaObject *metaObject = qt_getEnumMetaObject(value);
+    const QMetaEnum me = metaObject->enumerator(metaObject->indexOfEnumerator(qt_getEnumName(value)));
+    if (const char *key = me.valueToKey(value))
+        debug << key;
+    else
+        debug << int(value);
+}
+
+template <class QEnum>
+static inline void formatNonNullQEnum(QDebug &debug, const char *prefix, QEnum value)
+{
+    if (value) {
+         debug << prefix;
+         formatQEnum(debug, value);
+    }
+}
+
+template <class Enum>
+static inline void formatQFlags(QDebug &debug, const QFlags<Enum> &value)
+{
+    const QMetaObject *metaObject = qt_getEnumMetaObject(Enum());
+    const QMetaEnum me = metaObject->enumerator(metaObject->indexOfEnumerator(qt_getEnumName(Enum())));
+    const QDebugStateSaver saver(debug);
+    debug.noquote();
+    debug << me.valueToKeys(value);
+}
+
+template <class Enum>
+static inline void formatNonNullQFlags(QDebug &debug, const char *prefix, const QFlags<Enum> &value)
+{
+    if (value) {
+        debug << prefix;
+        formatQFlags(debug, value);
+    }
+}
+
+#endif // !QT_NO_QOBJECT
+
+} // namespace QtDebugUtils
+
+QT_END_NAMESPACE
+
+#endif // QDEBUG_P_H