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diff --git a/src/corelib/serialization/qjsonparser_p.h b/src/corelib/serialization/qjsonparser_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QJSONPARSER_P_H
+#define QJSONPARSER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/private/qglobal_p.h>
+#include <qjsondocument.h>
+#include <qvarlengtharray.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QJsonPrivate {
+
+class Parser
+{
+public:
+    Parser(const char *json, int length);
+
+    QJsonDocument parse(QJsonParseError *error);
+
+    class ParsedObject
+    {
+    public:
+        ParsedObject(Parser *p, int pos) : parser(p), objectPosition(pos) {
+            offsets.reserve(64);
+        }
+        void insert(uint offset);
+
+        Parser *parser;
+        int objectPosition;
+        QVector<uint> offsets;
+
+        inline QJsonPrivate::Entry *entryAt(int i) const {
+            return reinterpret_cast<QJsonPrivate::Entry *>(parser->data + objectPosition + offsets[i]);
+        }
+    };
+
+
+private:
+    inline void eatBOM();
+    inline bool eatSpace();
+    inline char nextToken();
+
+    bool parseObject();
+    bool parseArray();
+    bool parseMember(int baseOffset);
+    bool parseString(bool *latin1);
+    bool parseValue(QJsonPrivate::Value *val, int baseOffset);
+    bool parseNumber(QJsonPrivate::Value *val, int baseOffset);
+    const char *head;
+    const char *json;
+    const char *end;
+
+    char *data;
+    int dataLength;
+    int current;
+    int nestingLevel;
+    QJsonParseError::ParseError lastError;
+
+    inline int reserveSpace(int space) {
+        if (current + space >= dataLength) {
+            dataLength = 2*dataLength + space;
+            char *newData = (char *)realloc(data, dataLength);
+            if (!newData) {
+                lastError = QJsonParseError::DocumentTooLarge;
+                return -1;
+            }
+            data = newData;
+        }
+        int pos = current;
+        current += space;
+        return pos;
+    }
+};
+
+}
+
+QT_END_NAMESPACE
+
+#endif