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diff --git a/src/3rdparty/xkbcommon/xkbcommon/xkbcommon_workaround.h b/src/3rdparty/xkbcommon/xkbcommon/xkbcommon_workaround.h
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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef XKBCOMMON_WORKAROUND_H
+#define XKBCOMMON_WORKAROUND_H
+
+// Function utf32_to_utf8() is borrowed from the libxkbcommon library,
+// file keysym-utf.c. The workaround should be removed once the fix from
+// https://bugs.freedesktop.org/show_bug.cgi?id=56780 gets released.
+static int utf32_to_utf8(uint32_t unichar, char *buffer)
+{
+    int count, shift, length;
+    uint8_t head;
+
+    if (unichar <= 0x007f) {
+        buffer[0] = unichar;
+        buffer[1] = '\0';
+        return 2;
+    }
+    else if (unichar <= 0x07FF) {
+        length = 2;
+        head = 0xc0;
+    }
+    else if (unichar <= 0xffff) {
+        length = 3;
+        head = 0xe0;
+    }
+    else if (unichar <= 0x1fffff) {
+        length = 4;
+        head = 0xf0;
+    }
+    else if (unichar <= 0x3ffffff) {
+        length = 5;
+        head = 0xf8;
+    }
+    else {
+        length = 6;
+        head = 0xfc;
+    }
+
+    for (count = length - 1, shift = 0; count > 0; count--, shift += 6)
+        buffer[count] = 0x80 | ((unichar >> shift) & 0x3f);
+
+    buffer[0] = head | ((unichar >> shift) & 0x3f);
+    buffer[length] = '\0';
+
+    return length + 1;
+}
+
+static bool needWorkaround(uint32_t sym)
+{
+    /* patch encoding botch */
+    if (sym == XKB_KEY_KP_Space)
+        return true;
+
+    /* special keysyms */
+    if ((sym >= XKB_KEY_BackSpace && sym <= XKB_KEY_Clear) ||
+        (sym >= XKB_KEY_KP_Multiply && sym <= XKB_KEY_KP_9) ||
+        sym == XKB_KEY_Return || sym == XKB_KEY_Escape ||
+        sym == XKB_KEY_Delete || sym == XKB_KEY_KP_Tab ||
+        sym == XKB_KEY_KP_Enter || sym == XKB_KEY_KP_Equal)
+        return true;
+
+    return false;
+}
+
+#endif // XKBCOMMON_WORKAROUND_H