title: QT-creator: c++ application break after running several time
body: <p>I am working on a Qt application which is used as client to send message to a tomcat server. After running the application for like four times to send or retrieve data back, the application breaks with error message </p>
  
  <pre><code>ASSERT: "!isEmpty()" in file** /usr/include/qt4/qtCore/qlist.h, line 282. 
  </code></pre>
  
  <p>When I clicked on it I don't understand what it means. Does it have anything to do with memory allocation?</p>