qt 6.5.1 original

tests/manual/qmetatype/CMakeLists.txt

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+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## tst_qmetatype_expect_fail Test:
+#####################################################################
+
+qt_internal_add_test(tst_qmetatype_expect_fail
+    GUI
+    SOURCES
+        declare_metatype_noninline.cpp declare_metatype_noninline.h
+        tst_qmetatype.cpp
+)

tests/manual/qmetatype/declare_metatype_noninline.cpp

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+// Copyright (C) 2012 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Marc Mutz <marc.mutz@kdab.com>
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "declare_metatype_noninline.h"
+
+Q_DECLARE_METATYPE(ToBeDeclaredMetaTypeNonInline)
+
+int ToBeDeclaredMetaTypeNonInline::triggerRegistration()
+{
+    return qMetaTypeId<ToBeDeclaredMetaTypeNonInline>();
+}

tests/manual/qmetatype/declare_metatype_noninline.h

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+// Copyright (C) 2012 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Marc Mutz <marc.mutz@kdab.com>
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#ifndef DECLARE_METATYPE_NONINLINE_H
+#define DECLARE_METATYPE_NONINLINE_H
+
+#include <QtCore/qmetatype.h>
+
+struct ToBeDeclaredMetaTypeNonInline {
+    static int triggerRegistration();
+};
+
+#endif // DECLARE_METATYPE_NONINLINE_H
+

tests/manual/qmetatype/qmetatype.pro

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+CONFIG += testcase
+TARGET = tst_qmetatype_expect_fail
+QT = core
+HEADERS = declare_metatype_noninline.h
+SOURCES = tst_qmetatype.cpp declare_metatype_noninline.cpp

tests/manual/qmetatype/tst_qmetatype.cpp

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+// Copyright (C) 2012 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Marc Mutz <marc.mutz@kdab.com>
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include <QtCore>
+
+#include "declare_metatype_noninline.h"
+
+int main(int argc, char **argv)
+{
+    qDebug("expect no warning here");
+    const int id = qRegisterMetaType<ToBeDeclaredMetaTypeNonInline>("ToBeDeclaredMetaTypeNonInline");
+    qDebug("expect a qfatal now");
+    const int result = ToBeDeclaredMetaTypeNonInline::triggerRegistration();
+    Q_ASSERT(id == result);
+    qDebug("if you read this, check that a qFatal was seen, "
+           "otherwise the test failed.");
+}