Segfault when exporting pin, unless waiting a while after QGpioWatcher thread start

[isiloron]

When I try to export a pin immediately after starting the QGpioWatcher thread I encounter a segfault when the watcher appends the gpio to the pin list.

My workaround is to wait a while, using QThread::msleep(), after starting the thread, before I start to export pins.

I tried to wait for the isRunning() flag, but it is not enough.