bug#41239: GTK builds crashing in XTread_socket after deleting a frame

[martin rudalics]

> Not really no, but I have what might be a clue.  I can trigger this
> condition much more reliably (about 3 in 4, instead of 1 in 10; perhaps
> 1 in 10 times I was doing the following thing by accident), by
> intentionally moving the mouse over another popup location without
> letting it pop up, before doing the 'wait for popup and kill frame'
> procedure.

Does not seem to help here.

> So maybe our cleanup is too thorough in the case where we
> call xg_prepare_tooltip but the tooltip ends up not being shown.

One observation I've made is that with emacs -Q and switching between
two frames I can occasionally pop up an Emacs tooltip which means that
preparing the GTK tooltip failed for whatever reason.

>> How did you do that?  Did you build GTK with debugging information?
>
> No, just 'break g_log' in gdb works.

What did you install for that to work?  Would

https://wiki.gnome.org/Newcomers/DebianSourceDebugging

cover it?

martin