GtkText bug?

[James Macnicol <jamesm evans ee adfa oz au>]

Hello,

        I'm getting many segfaults when testing a GTK+ app I'm
writing.  The gdb backtrace looks like the following :

--------------------------------------------------------------------------
#0  advance_mark_n (mark=0x80468c0, n=1) at gtktext.c:3482
3482          prop = MARK_CURRENT_PROPERTY (mark);
(gdb) bt
#0  advance_mark_n (mark=0x80468c0, n=1) at gtktext.c:3482
#1  0xdff96aed in draw_line (text=0x80788f8, pixel_start_height=0,
    lp=0x80b26f0) at gtktext.c:5081
#2  0xdff971ed in expose_text (text=0x80788f8, area=0x80b70fa, cursor=1)
    at gtktext.c:5299
#3  0xdff90c38 in gtk_text_expose (widget=0x80788f8, event=0x80b70f0)
    at gtktext.c:1684
#4  0xdffb58ed in gtk_marshal_BOOL__POINTER (object=0x80788f8, func=0,
    func_data=0x0, args=0x0) at gtkmarshal.c:30
#5  0xdff7df5a in gtk_signal_real_emit (object=0x80788f8, signal_id=25,
    params=0x8046a14) at gtksignal.c:1463
#6  0xdff7c225 in gtk_signal_emit (object=0x80788f8, signal_id=25)
    at gtksignal.c:517
#7  0xdffad534 in gtk_widget_event (widget=0x80788f8, event=0x80b70f0)
    at gtkwidget.c:2628
#8  0xdff5422e in gtk_main_do_event (event=0x80b70f0) at gtkmain.c:663
#9  0xdfeae5f1 in gdk_event_dispatch (source_data=0x0, current_time=0x8046d58,
    user_data=0x0) at gdkevents.c:1970
#10 0xdfe7c5ac in g_main_dispatch ()
#11 0xdfe7c98b in g_main_iterate ()
#12 0xdfe7ca65 in g_main_run ()
#13 0xdff53e93 in gtk_main () at gtkmain.c:458
#14 0x804dc2b in main (argc=1, argv=0x8046dcc) at main.c:397
(gdb) p *mark
$1 = {property = 0x0, offset = 0, index = 1}
--------------------------------------------------------------------------

        i.e. mark->property is NULL so MARK_CURRENT_PROPERTY asking
for mark->property->data is going to generate a SIGSEGV.  My app
doesn't do anything tricky with the text widget, only gtk_text_insert
(+ usual things like freeze, thaw, set_point, forward_delete).

        I'm using GTK+ 1.1.9 on Solaris 7 for Intel with egcs 1.1.1 as the
compiler.



--
James Macnicol
jamesm@ee.adfa.oz.au