bug#30182: Update

[martin rudalics]

>> (1) Try with `x-gtk-use-system-tooltips' nil.  This should tell
>>       whether GTK tooltip handling interferes with our routines.
>
> With x-gtk-use-system-tooltips set to nil, the crash happens.

Good to know.

> (gdb) bt full
[...]
>          result_len = 4
[...]
> (gdb) p old_len_0
> $1 = 5
> (gdb) p new_len_0
> $2 = 5

This means that Fmake_list doesn't play a rôle here and a timer is
added in a very constant fashion in between setting result_len to 4 on
line 636 and making the list on line 646 of fns.c.  Crazy.

Thank you very much for testing this, martin