1 files changed, 19 insertions, 0 deletions
diff --git a/tests/auto/network/socket/qtcpserver/tst_qtcpserver.cpp b/tests/auto/network/socket/qtcpserver/tst_qtcpserver.cpp
index 30aab3bf34..5dcf87e9fa 100644
--- a/tests/auto/network/socket/qtcpserver/tst_qtcpserver.cpp
+++ b/tests/auto/network/socket/qtcpserver/tst_qtcpserver.cpp
@@ -106,6 +106,8 @@ private slots:
 
     void eagainBlockingAccept();
 
+    void qtbug51288();
+
 private:
 #ifndef QT_NO_BEARERMANAGEMENT
     QNetworkSession *networkSession;
@@ -990,5 +992,22 @@ void tst_QTcpServer::eagainBlockingAccept()
     server.close();
 }
 
+class NonListeningTcpServer : public QTcpServer
+{
+public:
+    void addSocketFromOutside(QTcpSocket* s)
+    {
+        addPendingConnection(s);
+    }
+};
+
+void tst_QTcpServer::qtbug51288()
+{
+    NonListeningTcpServer server;
+    QTcpSocket socket;
+    server.addSocketFromOutside(&socket);
+    QCOMPARE(&socket, server.nextPendingConnection());
+}
+
 QTEST_MAIN(tst_QTcpServer)
 #include "tst_qtcpserver.moc"