[maemo-developers] QML WebView segfaults when user goes to task switcher

[From: Mohammed Hassan]

On Sun, 2012-04-01 at 00:17 -0400, ext Felipe Crochik wrote:
> I have reported similar problem before but have never figured out a
> solution for it. Hopefully I will have better luck this time - I have
> two applications waiting for a workaround so I can release them to the
> Harmattan platform.
> 
> The application will crash with segfault if the javascript tries to
> update the screen when (or after) the user switches to the task
> switcher on harmattan. This is the output:
> Meego graphics system destroyed 
> 
> QPaintDevice: Cannot destroy paint device that is being painted
> 
> Segmentation fault
> 
> Finished running remote process. Exit code was 139.
> 
> 
> I have now a very simple example that reproduce the issue 100% of the
> time.
> I can't report this to the harmattan bug web site anymore so I am
> posting to any and all channels were I can find someone with expertise
> to help me.
> 
> In order to avoid a long e-mail with attached files I created a simple
> web page with more information: http://crochik.com/webview/

Have you tried setting the viewport for QDeclarativeView to QGLWidget ?

QmlApplicationViewer viewer;

viewer.setViewport(new QGLWidget);

Seeing a backtrace would probably help finding a better workaround.

Cheers,

-- 
Senior Software Engineer
Maemo Software