---------------------------
Signal Received
---------------------------
<p>The inferior stopped because it received a signal from the operating system.<p><table><tr><td>Signal name : </td><td>SIGSEGV</td></tr><tr><td>Signal meaning : </td><td>Segmentation fault</td></tr></table>
---------------------------
OK
---------------------------
tcpServer=new QTcpServer(); //缺少此句,没有实例化就会报错