Deconding glib wanrings and assertions

[Test-tools]

Hello,

I need some advice/hints for getting "more" out of glib assertion and warnings,
e.g. following:
(emerald:23520): Glib-GObject-WARNING *** some text

So, ok emerald is the executable, but whats 23520??? I would like to get filename and linenumber...

Thanks,

Roland