Qt application does not show tray icon if sni-qt is installed

[Alexey Fedoseev]

Qt application uses QSystemTrayIcon to display tray icons:

 QIcon icon = QIcon(":/Icons/images/theicon.png");
 trayIcon = new QSystemTrayIcon(icon, this);
 trayIcon->show();

But the tray icon didn't appear the application startup. I can see this string in the application log :

 Could not create '/tmp/sni-qt_APPNAME_3788-zQMxMX/icons' dir in 'hicolor/16x16/apps'

For some reason the hicolor folder has been created with insufficient rights:

 ~$ ls -l /tmp/sni-qt_APPNAME_3788-zQMxMX/icons
 total 4
 drw-rw-rw- 2 dralex dralex 4096 Jun 18 11:20 hicolor

The bug has appeared first time after a regular system update (including sni-qt installation). Without sni-qt the application works fine (the application was added to the whilelist, etc.).

The bug is reproduced on Ubuntu with Unity 3D (12.04), both 32-bit and 64-bit systems, with any available sni-qt package (sni-qt_0.2.5-0ubuntu3, sni-qt_0.2.6-0ubuntu1). Qt version is 4.8.1-0ubuntu4.4.

The real problem is that I cannot reproduce this bug with standard systray example from Qt. Looks like for some reason my application could not create subdirectory tree in /tmp directory.

One more question. Is it possible to disable somehow sni-qt image caching in /tmp?

[Alexey Fedoseev (a-fedoseev)]

Sorry, looks like the problem was in my application - playing with umask in a second thread.
You can remove this bug.