[Pan-users] [0.95] Reproducible segfault when sorting on article name

[walt]

When I click on the subject bar at the top of the header pane
(to sort on the subject name) I get a reproducible segfault:

(pan:31970): GLib-CRITICAL **: g_utf8_collate_key: assertion `str !=
NULL' failed

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1223936320 (LWP 31970)]
0xb76a8a68 in strcmp () from /lib/tls/libc.so.6
(gdb) bt
#0  0xb76a8a68 in strcmp () from /lib/tls/libc.so.6
#1  0x080bcdf5 in (anonymous namespace)::column_compare_func
(model=0x8447f30, iter_a=0x87ca358,
    iter_b=0x87caa60, userdata=0x3) at stl_map.h:312
#2  0x080d0051 in (anonymous namespace)::tuple_compare_func
(a_gpointer=0x87ca350,
    b_gpointer=0x87caa58, user_data=0xbf84ecf0) at pan-tree.cc:266
#3  0xb7d41843 in g_qsort_with_data () from /usr/lib/libglib-2.0.so.0
#4  0x080d018d in (anonymous namespace)::pan_tree_store_sort_helper
(tree=0x8aea8b0,
    address@hidden, parent=0x87445c8) at stl_vector.h:560
#5  0x080d04d2 in (anonymous namespace)::pan_tree_store_sort
(tree=0x8aea8b0) at pan-tree.cc:344
#6  0x080d0725 in (anonymous namespace)::set_sort_column_id
(sortable=0x8aea8b0, sort_column_id=3,
    order=GTK_SORT_ASCENDING) at pan-tree.cc:376
#7  0xb7c0318b in gtk_tree_sortable_set_sort_column_id () from
/usr/lib/libgtk-x11-2.0.so.0
#8  0xb7c20ec8 in gtk_tree_view_column_get_type () from
/usr/lib/libgtk-x11-2.0.so.0
#9  0xb7e1f9b6 in g_cclosure_marshal_VOID__VOID () from
/usr/lib/libgobject-2.0.so.0
#10 0xb7e0e146 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#11 0xb7e1f4c5 in g_signal_emit_by_name () from /usr/lib/libgobject-2.0.so.0
#12 0xb7e1e577 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#13 0xb7e1e8f3 in g_signal_emit_by_name () from /usr/lib/libgobject-2.0.so.0
#14 0xb7c20cf9 in gtk_tree_view_column_get_type () from
/usr/lib/libgtk-x11-2.0.so.0
#15 0xb7e1f9b6 in g_cclosure_marshal_VOID__VOID () from
/usr/lib/libgobject-2.0.so.0
#16 0xb7e0e146 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#17 0xb7e1f4c5 in g_signal_emit_by_name () from /usr/lib/libgobject-2.0.so.0
#18 0xb7e1e577 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#19 0xb7e1e806 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#20 0xb7a78457 in gtk_button_clicked () from /usr/lib/libgtk-x11-2.0.so.0
#21 0xb7a792b9 in gtk_button_get_relief () from /usr/lib/libgtk-x11-2.0.so.0
#22 0xb7e1f9b6 in g_cclosure_marshal_VOID__VOID () from
/usr/lib/libgobject-2.0.so.0


I'm running gtk+-2.8.12, glib-2.8.6 and glibc-2.3.6.  I'd be happy
to do any other debugging tests if I can.