(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?
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.