diff -r 000000000000 -r 1918ee327afb tests/auto/qobject/signalbug.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/auto/qobject/signalbug.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,151 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "signalbug.h"
+
+#include <qcoreapplication.h>
+#include <qstring.h>
+
+#include <stdio.h>
+
+static int Step = 0;
+Sender RandomSender (0, 0);
+
+
+void TRACE (int step, const char *name)
+{
+	for (int t = 0; t < step - 1; t++)
+		fprintf (stderr, "\t");
+	fprintf (stderr, "Step %d: %s\n", step, name);
+	return;
+}
+
+
+Receiver::Receiver ()
+	: QObject ()
+{
+}
+
+void Receiver::received ()
+{
+	::Step++;
+	const int stepCopy = ::Step;
+	TRACE (stepCopy, "Receiver::received()");
+	Q_ASSERT (::Step == 2 || ::Step == 4);
+
+	if (::Step == 2)
+		s->fire ();
+
+	fprintf (stderr, "Receiver<%s>::received() sender=%s\n",
+		(const char *) objectName ().toAscii (), sender ()->metaObject()->className());
+
+	TRACE (stepCopy, "ends Receiver::received()");
+}
+
+
+Disconnector::Disconnector ()
+	: QObject ()
+{
+}
+
+void Disconnector::received ()
+{
+	::Step++;
+	const int stepCopy = ::Step;
+	TRACE (stepCopy, "Disconnector::received()");
+	Q_ASSERT (::Step == 5 || ::Step == 6);
+
+	fprintf (stderr, "Disconnector<%s>::received() sender=%s\n",
+		(const char *) objectName ().toAscii (), sender ()->metaObject()->className());
+	if (sender () == 0)
+		fprintf (stderr, "WE SHOULD NOT BE RECEIVING THIS SIGNAL\n");
+
+	if (::Step == 5)
+	{
+		disconnect (s, SIGNAL (fired ()), s->d, SLOT (received ()));
+
+		connect (&RandomSender, SIGNAL (fired ()), s->d, SLOT (received ()));
+	}
+
+	TRACE (stepCopy, "ends Disconnector::received()");
+}
+
+
+Sender::Sender (Receiver *r, Disconnector *d)
+	: QObject ()
+{
+	this->r = r; this->d = d;
+	if (r)
+		connect (this, SIGNAL (fired ()), r, SLOT (received ()));
+	if (d)
+		connect (this, SIGNAL (fired ()), d, SLOT (received ()));
+};
+
+void Sender::fire ()
+{
+	::Step++;
+	const int stepCopy = ::Step;
+	TRACE (stepCopy, "Sender::fire()");
+	Q_ASSERT (::Step == 1 || ::Step == 3);
+
+	emit fired ();
+	TRACE (stepCopy, "ends Sender::fire()");
+}
+
+
+int main (int argc, char *argv [])
+{
+	QCoreApplication app (argc, argv);
+
+	Receiver r;
+	Disconnector d;
+	Sender s (&r, &d);
+
+	r.s = &s;
+	d.s = &s;
+
+
+	::Step = 0;
+	s.fire ();
+	return 0;
+}
+
+