Memory leaking when softkeys are changed

It appears that something in the underlying code that changes the softkeys on the Symbian platform is leaking memory.

In order to help narrow down what could be causing unexpected memory seepage in our Qt Symbian application, we created a test application which displays the current heap statistics of the application on pressing a button (as an info print message, on devices with ErrRd.sis installed). In this very simple application, we saw a constant amount of heap memory in use each time we pressed the button, which is as expected.

We then added a QAction to the application main window menu bar, to show the memory usage via a menu option instead of via the button. While doing this, we can see each time the menu is opened that the heap memory in use increases, but doesn't subsequently decrease as expected. This also happens even if the action is not selected from the menu, the act of simply showing the menu and closing it leaks heap memory.

However, in our application we observe the same creep in memory usage without having to show a menu. It happens whenever a softkey is changed on the main menu bar. This presents itself in the sample application, as the softkeys are changed each time the menu is opened or closed.

I've attached the sample application to help demonstrate this.

Thanks.