Segfaults on exit - something has messed up recent CVS

[Ethan M. <merritt@u.washington.edu>]

For the last week or so I've been getting a double-free warning
message from glibc every time I exit gnuplot with the current driver
set to wxt.  This was non-fatal, although it did mean
that the history file was not updated.

As of today this has gotten much worse. It no longer happens every
time I exit, but if it does happen then it causes a core dump:

(<unknown>:1881): GLib-GObject-WARNING **: instance of invalid non-instantiatable type `-g-type-private--GTypeFlags'

(<unknown>:1881): GLib-GObject-CRITICAL **: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed

(<unknown>:1881): GLib-GObject-WARNING **: instance of invalid non-instantiatable type `-g-type-private--GTypeFlags'

(<unknown>:1881): GLib-GObject-CRITICAL **: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Segmentation fault


The only recent patch I see is:
2007-06-03  Petr Mikulik  <mi...@ph...>
* src/history.c (write_history_n): Cannot use int_error() when exiting gnuplot.

I don't understand how this would make things worse than before,
but I don't see any other candidate patches.

Is anyone else seeing this?   Any ideas why?

-- 
Ethan A Merritt