What are the numbers in glib errors and warnings?

Question

(myapp:11228): GLib-CRITICAL **: g_date_strftime: assertion `slen > 0' failed

What does the number after myapp mean? It doesn't correspond to any source-code line nor does its hex or binary interpretation correspond to a relevant location in the binary. The number has always mystified me and looking at the GLib source it appears that it is supposed to be a line number. What does the number mean, or what is it supposed to mean?

Answer 1

I'm pretty sure it's the pid, in case you want to track down the process that emitted the message and say, attach a debugger.