Possible error in the folder store tree model

[Sergio Villar Senin <svillar igalia com>]

Hi,

I started receiving the following criticals
"gtk_tree_model_sort_real_unref_node: assertion `elt->ref_count > 0' failed"

this is the backtrace of the criticals:

#0  my_log_handler (log_domain=0xb7aa86ad "Gtk",
log_level=G_LOG_LEVEL_CRITICAL,
    message=0x8203f28 "gtk_tree_model_sort_real_unref_node: assertion
`elt->ref_count > 0' failed",
    user_data=0x0) at modest-main.c:87
#1  0xb704c213 in g_logv () from /usr/lib/libglib-2.0.so.0
#2  0xb704c3e6 in g_log () from /usr/lib/libglib-2.0.so.0
#3  0xb704c44c in g_return_if_fail_warning () from /usr/lib/libglib-2.0.so.0
#4  0xb7a2f2e6 in gtk_tree_model_sort_convert_iter_to_child_iter () from
/usr/lib/libgtk-x11-2.0.so.0
#5  0xb7a31ca0 in gtk_tree_model_sort_convert_child_iter_to_iter () from
/usr/lib/libgtk-x11-2.0.so.0
#6  0xb7944b1c in gtk_marshal_VOID__UINT_STRING () from
/usr/lib/libgtk-x11-2.0.so.0
#7  0xb70b364b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#8  0xb70c8fd8 in g_signal_has_handler_pending () from
/usr/lib/libgobject-2.0.so.0
#9  0xb70c9f28 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#10 0xb70ca216 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#11 0xb7a283d1 in gtk_tree_model_row_changed () from
/usr/lib/libgtk-x11-2.0.so.0
#12 0xb7a39803 in gtk_tree_store_set_valist () from
/usr/lib/libgtk-x11-2.0.so.0
#13 0xb7a3983f in gtk_tree_store_set () from /usr/lib/libgtk-x11-2.0.so.0
#14 0xb7cb53ba in updater (model=0xbfff1d40, path=0x81f0bd8,
iter=0x81f0e20, user_data1=0xb7aa86ad)
    at tny-gtk-folder-store-tree-model.c:609
#15 0xb7a287c8 in gtk_tree_model_rows_reordered () from
/usr/lib/libgtk-x11-2.0.so.0
#16 0xb7a2880c in gtk_tree_model_rows_reordered () from
/usr/lib/libgtk-x11-2.0.so.0
#17 0xb7a2880c in gtk_tree_model_rows_reordered () from
/usr/lib/libgtk-x11-2.0.so.0
#18 0xb7a288d3 in gtk_tree_model_foreach () from
/usr/lib/libgtk-x11-2.0.so.0
#19 0xb7cb5670 in folder_obsr_update_idle (user_data=0xb7aa86ad) at
tny-gtk-folder-store-tree-model.c:721

Maybe any recent change in the folder store tree model causes this? BTW
I'm wrapping the TnyFolderStoreTreeModel into a gtktreesortmodel, but it
has been working until now.

Br