use of uninitialized static variable

Please take a look at function qt_guiPlatformPlugin() at qt-everywhere-opensource-src-4.7.3/src/gui/kernel/qguiplatformplugin.cpp:

QGuiPlatformPlugin *qt_guiPlatformPlugin()
{
static QGuiPlatformPlugin *plugin;
if (!plugin)
{

'plugin' variable is used without initialization

This issue is present in 4.7.2 release too.

With best regards,
Andrew