Clang: Provide example with a lot of tidy warnings

Change-Id: I6d6d2559bb8e2b6c972e88c3af9ce06968e7c959
Reviewed-by: Marco Bubke <marco.bubke@qt.io>

share/qtcreator/cplusplus/examples/tidy_example.h

@@ -0,0 +1,39 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** 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 General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** 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-3.0.html.
+**
+****************************************************************************/
+
+// llvm-header-guard
+
+#include <string>
+
+// google-build-using-namespace, google-global-names-in-headers
+using namespace std;
+
+// cert-dcl59-cpp, google-build-namespaces
+namespace {
+class HeaderClass {
+
+};
+
+} // llvm-namespace-comment