[Mono-bugs] [Bug 340809] Crash inside Cairo.

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Tue Nov 13 13:30:02 EST 2007


https://bugzilla.novell.com/show_bug.cgi?id=340809#c5





--- Comment #5 from Sebastien Pouliot <spouliot at novell.com>  2007-11-13 11:30:01 MST ---
We hit the same assert in cairo if we remove the (unneeded) call to
GetSizeForBrush (committed as r89569 since a SolidColorBrush shouldn't waste
time computing the bounds).

New stack trace looks like this:

mono: cairo-pen.c:326: _cairo_pen_find_active_cw_vertex_index: Assertion `i <
pen->num_vertices' failed.
Stacktrace:

  at (wrapper managed-to-native) Gtk.Application.gtk_main () <0x00004>
  at (wrapper managed-to-native) Gtk.Application.gtk_main () <0xffffffff>
  at Gtk.Application.Run () <0x00007>
  at MonoOpen.LoadXaml (string,System.Collections.ArrayList) <0x005c3>
  at MonoOpen.DoLoad (string,System.Collections.ArrayList) <0x00037>
  at MonoOpen.Main (string[]) <0x005dd>
  at (wrapper runtime-invoke) MonoOpen.runtime_invoke_int_string[]
(object,intptr,intptr,intptr) <0xffffffff>

Native stacktrace:

        mono(mono_handle_native_sigsegv+0xcf) [0x81778df]
        /lib/libpthread.so.0 [0x40db120]
        /lib/libc.so.6(abort+0x103) [0x4132ff3]
        /lib/libc.so.6(__assert_fail+0xfb) [0x412b01b]
        /home/poupou/svn/moon/src/.libs/libmoon.so [0x5fabcfd]
        /home/poupou/svn/moon/src/.libs/libmoon.so [0x5fabd62]
        /home/poupou/svn/moon/src/.libs/libmoon.so [0x5fabf60]
        /home/poupou/svn/moon/src/.libs/libmoon.so [0x5fab2c0]
        /home/poupou/svn/moon/src/.libs/libmoon.so [0x5fa945b]
        /home/poupou/svn/moon/src/.libs/libmoon.so [0x5faab2d]
        /home/poupou/svn/moon/src/.libs/libmoon.so [0x5fa41bc]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(moonlight_cairo_stroke_extents+0x55)
[0x5f9be15]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN4Path15GetSizeForBrushEP6_cairoPdS2_+0x25c)
[0x5f76eac]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN5Brush10SetupBrushEP6_cairoP9UIElement+0x3e)
[0x5f3ee2e]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN5Shape6DoDrawEP6_cairobb+0x23c)
[0x5f78eec]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN5Shape6RenderEP6_cairoiiii+0x41)
[0x5f79311]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN9UIElement6RenderEP6_cairoP6Region+0x7b)
[0x5f8ad3b]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN9UIElement8DoRenderEP6_cairoP6Region+0xd0)
[0x5f8ccf0]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN5Panel14RenderChildrenEP6_cairoP6Region+0x15f)
[0x5f6b60f]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN5Panel6RenderEP6_cairoP6Region+0x131)
[0x5f6bce1]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN9UIElement8DoRenderEP6_cairoP6Region+0xd0)
[0x5f8ccf0]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN7Surface5PaintEP6_cairoP6Region+0x3f)
[0x5f710ef]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN7Surface21expose_event_callbackEP10_GtkWidgetP15_GdkEventExposePv+0x252)
[0x5f71952]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0x5876f4e]
        /opt/gnome/lib/libgobject-2.0.so.0(g_closure_invoke+0x12b) [0x5b2c8db]
        /opt/gnome/lib/libgobject-2.0.so.0 [0x5b3d233]
        /opt/gnome/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x68f)
[0x5b3e87f]
        /opt/gnome/lib/libgobject-2.0.so.0(g_signal_emit+0x35) [0x5b3ec85]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0x5961bb8]
       
/opt/gnome/lib/libgtk-x11-2.0.so.0(IA__gtk_container_propagate_expose+0x167)
[0x57dfae7]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0x57dfb51]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0x57a1caf]
        /opt/gnome/lib/libgtk-x11-2.0.so.0(IA__gtk_container_forall+0x6b)
[0x57e051b]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0x57e060f]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0x59769e1]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0x5876f4e]
        /opt/gnome/lib/libgobject-2.0.so.0 [0x5b2b0c7]
        /opt/gnome/lib/libgobject-2.0.so.0(g_closure_invoke+0x12b) [0x5b2c8db]
        /opt/gnome/lib/libgobject-2.0.so.0 [0x5b3d883]
        /opt/gnome/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x68f)
[0x5b3e87f]
        /opt/gnome/lib/libgobject-2.0.so.0(g_signal_emit+0x35) [0x5b3ec85]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0x5961bb8]
        /opt/gnome/lib/libgtk-x11-2.0.so.0(IA__gtk_main_do_event+0x534)
[0x5871dd4]
        /opt/gnome/lib/libgdk-x11-2.0.so.0 [0x5a790ef]
        /opt/gnome/lib/libgdk-x11-2.0.so.0(IA__gdk_window_process_updates+0xab)
[0x5a791eb]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN7Surface9render_cbEP11EventObjectPvS2_+0x56)
[0x5f70d26]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN11EventObject4EmitEiPv+0x79)
[0x5f4dc79]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN11TimeManager4TickEv+0x181)
[0x5f45021]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN11TimeManager13tick_callbackEP11EventObjectPvS2_+0x1d)
[0x5f450cd]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN11EventObject4EmitEiPv+0x79)
[0x5f4dc79]
       
/home/poupou/svn/moon/src/.libs/libmoon.so(_ZN16SystemTimeSource12tick_timeoutEPv+0x31)
[0x5f44261]
        /opt/gnome/lib/libglib-2.0.so.0 [0x406c2f6]
        /opt/gnome/lib/libglib-2.0.so.0(g_main_context_dispatch+0x16d)
[0x406bbcd]
        /opt/gnome/lib/libglib-2.0.so.0 [0x406edcf]
        /opt/gnome/lib/libglib-2.0.so.0(g_main_loop_run+0x1a9) [0x406f179]
        /opt/gnome/lib/libgtk-x11-2.0.so.0(IA__gtk_main+0xb4) [0x5872034]
        [0x6a33de6]
        [0x6a33db0]
        [0x57155c4]
        [0x46ecc20]
        [0x46e68f6]
        [0x46e61c4]
        mono(mono_runtime_exec_main+0x10e) [0x80ecbbe]
        mono(mono_runtime_run_main+0x1ba) [0x80edf7a]
        mono(mono_main+0xfaf) [0x80609ef]
        mono [0x805f532]
        /lib/libc.so.6(__libc_start_main+0xdc) [0x411e87c]
        mono [0x805f481]

Debug info from gdb:

(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
(no debugging symbols found)
0x38026572 in ?? ()
0x38026572 in ?? ()


=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Killed
poupou at pollux:~/src/bugzilla> mopen 340809.xaml 
** (<unknown>:4942): WARNING **: runtime before - cairo_clip_extents 0x83e9a20
0 0 700 500

** (<unknown>:4942): WARNING **: runtime after - cairo_clip_extents 0x83e9a20 0
0 700 500
mono: cairo-pen.c:326: _cairo_pen_find_active_cw_vertex_index: Assertion `i <
pen->num_vertices' failed.
Stacktrace:

  at (wrapper managed-to-native) Gtk.Application.gtk_main () <0x00004>
  at (wrapper managed-to-native) Gtk.Application.gtk_main () <0xffffffff>
  at Gtk.Application.Run () <0x00007>
  at MonoOpen.LoadXaml (string,System.Collections.ArrayList) <0x005c3>
  at MonoOpen.DoLoad (string,System.Collections.ArrayList) <0x00037>
  at MonoOpen.Main (string[]) <0x005dd>
  at (wrapper runtime-invoke) MonoOpen.runtime_invoke_int_string[]
(object,intptr,intptr,intptr) <0xffffffff>

Native stacktrace:

        mono(mono_handle_native_sigsegv+0xcf) [0x81778df]
        [0xffffe440]
        /lib/libc.so.6(abort+0x103) [0xb7dc1ff3]
        /lib/libc.so.6(__assert_fail+0xfb) [0xb7dba01b]
        /usr/local/lib/libmoon.so [0xb61fadad]
        /usr/local/lib/libmoon.so [0xb61fae12]
        /usr/local/lib/libmoon.so [0xb61fb010]
        /usr/local/lib/libmoon.so [0xb61fa370]
        /usr/local/lib/libmoon.so [0xb61f850b]
        /usr/local/lib/libmoon.so [0xb61f9bdd]
        /usr/local/lib/libmoon.so [0xb62040d5]
        /usr/local/lib/libmoon.so [0xb6200a5e]
        /usr/local/lib/libmoon.so [0xb61f2c99]
        /usr/local/lib/libmoon.so(moonlight_cairo_stroke_preserve+0x2c)
[0xb61eb0cc]
        /usr/local/lib/libmoon.so(moonlight_cairo_stroke+0x12) [0xb61eb0f2]
        /usr/local/lib/libmoon.so(_ZN5Shape6DoDrawEP6_cairobb+0x251)
[0xb61c7fa1]
        /usr/local/lib/libmoon.so(_ZN5Shape6RenderEP6_cairoiiii+0x41)
[0xb61c83b1]
        /usr/local/lib/libmoon.so(_ZN9UIElement6RenderEP6_cairoP6Region+0x7b)
[0xb61d9ddb]
        /usr/local/lib/libmoon.so(_ZN9UIElement8DoRenderEP6_cairoP6Region+0xd0)
[0xb61dbd90]
       
/usr/local/lib/libmoon.so(_ZN5Panel14RenderChildrenEP6_cairoP6Region+0x15f)
[0xb61ba6af]
        /usr/local/lib/libmoon.so(_ZN5Panel6RenderEP6_cairoP6Region+0x131)
[0xb61bad81]
        /usr/local/lib/libmoon.so(_ZN9UIElement8DoRenderEP6_cairoP6Region+0xd0)
[0xb61dbd90]
        /usr/local/lib/libmoon.so(_ZN7Surface5PaintEP6_cairoP6Region+0x3f)
[0xb61c018f]
       
/usr/local/lib/libmoon.so(_ZN7Surface21expose_event_callbackEP10_GtkWidgetP15_GdkEventExposePv+0x252)
[0xb61c09f2]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0xb6d48f4e]
        /opt/gnome/lib/libgobject-2.0.so.0(g_closure_invoke+0x12b) [0xb6afa8db]
        /opt/gnome/lib/libgobject-2.0.so.0 [0xb6b0b233]
        /opt/gnome/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x68f)
[0xb6b0c87f]
        /opt/gnome/lib/libgobject-2.0.so.0(g_signal_emit+0x35) [0xb6b0cc85]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0xb6e33bb8]
       
/opt/gnome/lib/libgtk-x11-2.0.so.0(IA__gtk_container_propagate_expose+0x167)
[0xb6cb1ae7]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0xb6cb1b51]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0xb6c73caf]
        /opt/gnome/lib/libgtk-x11-2.0.so.0(IA__gtk_container_forall+0x6b)
[0xb6cb251b]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0xb6cb260f]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0xb6e489e1]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0xb6d48f4e]
        /opt/gnome/lib/libgobject-2.0.so.0 [0xb6af90c7]
        /opt/gnome/lib/libgobject-2.0.so.0(g_closure_invoke+0x12b) [0xb6afa8db]
        /opt/gnome/lib/libgobject-2.0.so.0 [0xb6b0b883]
        /opt/gnome/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x68f)
[0xb6b0c87f]
        /opt/gnome/lib/libgobject-2.0.so.0(g_signal_emit+0x35) [0xb6b0cc85]
        /opt/gnome/lib/libgtk-x11-2.0.so.0 [0xb6e33bb8]
        /opt/gnome/lib/libgtk-x11-2.0.so.0(IA__gtk_main_do_event+0x534)
[0xb6d43dd4]
        /opt/gnome/lib/libgdk-x11-2.0.so.0 [0xb6ba90ef]
        /opt/gnome/lib/libgdk-x11-2.0.so.0(IA__gdk_window_process_updates+0xab)
[0xb6ba91eb]
       
/usr/local/lib/libmoon.so(_ZN7Surface9render_cbEP11EventObjectPvS2_+0x56)
[0xb61bfdc6]
        /usr/local/lib/libmoon.so(_ZN11EventObject4EmitEiPv+0x79) [0xb619cd19]
        /usr/local/lib/libmoon.so(_ZN11TimeManager4TickEv+0x181) [0xb61940c1]
       
/usr/local/lib/libmoon.so(_ZN11TimeManager13tick_callbackEP11EventObjectPvS2_+0x1d)
[0xb619416d]
        /usr/local/lib/libmoon.so(_ZN11EventObject4EmitEiPv+0x79) [0xb619cd19]
        /usr/local/lib/libmoon.so(_ZN16SystemTimeSource12tick_timeoutEPv+0x31)
[0xb6193301]
        /opt/gnome/lib/libglib-2.0.so.0 [0xb7f212f6]
        /opt/gnome/lib/libglib-2.0.so.0(g_main_context_dispatch+0x16d)
[0xb7f20bcd]
        /opt/gnome/lib/libglib-2.0.so.0 [0xb7f23dcf]
        /opt/gnome/lib/libglib-2.0.so.0(g_main_loop_run+0x1a9) [0xb7f24179]
        /opt/gnome/lib/libgtk-x11-2.0.so.0(IA__gtk_main+0xb4) [0xb6d44034]
        [0xb5e78de6]
        [0xb5e78db0]
        [0xb6f215c4]
        [0xb79cbc20]
        [0xb79c58f6]
        [0xb79c51c4]
        mono(mono_runtime_exec_main+0x10e) [0x80ecbbe]
        mono(mono_runtime_run_main+0x1ba) [0x80edf7a]
        mono(mono_main+0xfaf) [0x80609ef]
        mono [0x805f532]
        /lib/libc.so.6(__libc_start_main+0xdc) [0xb7dad87c]
        mono [0x805f481]

Debug info from gdb:

Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -1210485056 (LWP 4942)]
[New Thread -1220060256 (LWP 4944)]
[New Thread -1219912800 (LWP 4943)]
0xffffe410 in __kernel_vsyscall ()
  3 Thread -1219912800 (LWP 4943)  0xffffe410 in __kernel_vsyscall ()
  2 Thread -1220060256 (LWP 4944)  0xffffe410 in __kernel_vsyscall ()
  1 Thread -1210485056 (LWP 4942)  0xffffe410 in __kernel_vsyscall ()

Thread 3 (Thread -1219912800 (LWP 4943)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7eec376 in g_free () from /lib/libpthread.so.0
#2  0x08114b21 in collection_thread (unused=0x0) at collection.c:34
#3  0xb7ee52ab in start_thread () from /lib/libpthread.so.0
#4  0xb7e56a4e in clone () from /lib/libc.so.6

Thread 2 (Thread -1220060256 (LWP 4944)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7ee9056 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x0811fb1f in timedwait_signal_poll_cond (cond=0xb79731dc,
    mutex=0xb79731c4, timeout=0x0, alertable=0) at handles.c:1443
#3  0x0812255f in _wapi_handle_timedwait_signal_handle (handle=0x404,
    timeout=0x0, alertable=0) at handles.c:1523
#4  0x081225dc in _wapi_handle_wait_signal_handle (handle=0x404, alertable=0)
    at handles.c:1483
#5  0x081232ef in WaitForSingleObjectEx (handle=0x404, timeout=4294967295,
    alertable=0) at wait.c:200
#6  0x0817ed2a in finalizer_thread (unused=0x0) at gc.c:888
#7  0x080c6f84 in start_wrapper (data=0x8245370) at threads.c:550
#8  0x08119c6e in thread_start_routine (args=0xb78315d0) at threads.c:264
#9  0x081344c5 in GC_start_routine (arg=0x22f40) at pthread_support.c:1369
#10 0xb7ee52ab in start_thread () from /lib/libpthread.so.0
#11 0xb7e56a4e in clone () from /lib/libc.so.6

Thread 1 (Thread -1210485056 (LWP 4942)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb7e50101 in g_free () from /lib/libc.so.6
#2  0xb7f4baf0 in g_spawn_sync () from /opt/gnome/lib/libglib-2.0.so.0
#3  0xb7f4bebc in g_spawn_command_line_sync ()
   from /opt/gnome/lib/libglib-2.0.so.0
#4  0x08177971 in mono_handle_native_sigsegv (signal=6, ctx=0xbfa9fe4c)
    at mini-exceptions.c:1061
#5  <signal handler called>
#6  0xffffe410 in __kernel_vsyscall ()
#7  0xb7dc08d0 in raise () from /lib/libc.so.6
#8  0xb7dc1ff3 in abort () from /lib/libc.so.6
#9  0xb7dba01b in __assert_fail () from /lib/libc.so.6
#10 0xb61fadad in _cairo_pen_find_active_cw_vertex_index (pen=0xbfaa05b4,
    slope=0xbfaa0330, active=0xbfaa0348) at cairo-pen.c:326
#11 0xb61fae12 in _cairo_pen_stroke_spline_half (pen=0xbfaa05b4,
    spline=<value optimized out>, dir=4942, polygon=0xbfaa0388)
    at cairo-pen.c:389
#12 0xb61fb010 in _cairo_pen_stroke_spline (pen=0xbfaa05b4, spline=0xbfaa04b8,
    tolerance=0.10000000000000001, traps=0xbfaa07a0) at cairo-pen.c:439
#13 0xb61fa370 in _cairo_stroker_curve_to (closure=0xbfaa0664, b=0x83e9bfc,
    c=0x83e9c04, d=0x83e9c0c) at cairo-path-stroke.c:844
#14 0xb61f850b in _cairo_path_fixed_interpret (path=0x83e9b98,
    dir=CAIRO_DIRECTION_FORWARD, move_to=0xb61f9880 <_cairo_stroker_move_to>,
    line_to=0xb61fa850 <_cairo_stroker_line_to>,
    curve_to=0xb61fa0c0 <_cairo_stroker_curve_to>,
    close_path=0xb61fa9e0 <_cairo_stroker_close_path>, closure=0xbfaa0664)
    at cairo-path-fixed.c:488
#15 0xb61f9bdd in _cairo_path_fixed_stroke_to_traps (path=0x83e9b98,
    stroke_style=0x6, ctm=0xbfaa0b84, ctm_inverse=0xbfaa0b54,
    tolerance=0.10000000000000001, traps=0xbfaa07a0)
    at cairo-path-stroke.c:1001
#16 0xb62040d5 in _cairo_surface_fallback_stroke (surface=0x83e98a8,
    op=CAIRO_OPERATOR_OVER, source=0xbfaa0a80, path=0x83e9b98,
    stroke_style=0x83ea1f8, ctm=0xbfaa0b84, ctm_inverse=0xbfaa0b54,
    tolerance=0.10000000000000001, antialias=CAIRO_ANTIALIAS_DEFAULT)
    at cairo-surface-fallback.c:833
#17 0xb6200a5e in _cairo_surface_stroke (surface=0x83e98a8,
    op=CAIRO_OPERATOR_OVER, source=0xbfaa0c04, path=0x83e9b98,
    stroke_style=0x83ea1f8, ctm=0x83ea2a8, ctm_inverse=0x83ea2d8,
    tolerance=0.10000000000000001, antialias=CAIRO_ANTIALIAS_DEFAULT)
    at cairo-surface.c:1525
#18 0xb61f2c99 in _cairo_gstate_stroke (gstate=0x83ea1e8, path=0x83e9b98)
    at cairo-gstate.c:983
#19 0xb61eb0cc in *INT_moonlight_cairo_stroke_preserve (cr=0x83e9a20)
    at cairo.c:2062
#20 0xb61eb0f2 in moonlight_cairo_stroke (cr=0x83e9a20) at cairo.c:2036
#21 0xb61c7fa1 in Shape::DoDraw (this=0x83e5f20, cr=0x83e9a20, do_op=true,
    consider_fill=true) at shape.cpp:238
#22 0xb61c83b1 in Shape::Render (this=0x83e5f20, cr=0x83e9a20, x=24, y=0,
    width=22, height=1) at shape.cpp:251
#23 0xb61d9ddb in UIElement::Render (this=0x83e5f20, cr=0x83e9a20,
    region=0x83ea1b8) at uielement.cpp:544
#24 0xb61dbd90 in UIElement::DoRender (this=0x83e5f20, cr=0x83e9a20,
    region=0x83ea1b8) at uielement.cpp:513
#25 0xb61ba6af in Panel::RenderChildren (this=0x83e54c8, cr=0x83e9a20,
    parent_region=0x83e9dd8) at panel.cpp:345
#26 0xb61bad81 in Panel::Render (this=0x83e54c8, cr=0x83e9a20,
    region=0x83e9dd8) at panel.cpp:283
#27 0xb61dbd90 in UIElement::DoRender (this=0x83e54c8, cr=0x83e9a20,
    region=0x83e9dd8) at uielement.cpp:513
#28 0xb61c018f in Surface::Paint (this=0x83aca80, ctx=0x83e9a20,
    region=0x83e9dd8) at runtime.cpp:426
#29 0xb61c09f2 in Surface::expose_event_callback (widget=0x83acb18,
    event=0x83e88b8, data=0x83aca80) at runtime.cpp:851
#30 0xb6d48f4e in g_free () from /opt/gnome/lib/libgtk-x11-2.0.so.0
#31 0x083acb18 in ?? ()
#32 0x083e88b8 in ?? ()
#33 0x083aca80 in ?? ()
#34 0xb6b28f48 in g_free () from /opt/gnome/lib/libgobject-2.0.so.0
#35 0xb6d48ef0 in g_free () from /opt/gnome/lib/libgtk-x11-2.0.so.0
#36 0xffffffff in ?? ()
#37 0xbfaa10f4 in ?? ()
#38 0xb6afa8db in g_closure_invoke () from /opt/gnome/lib/libgobject-2.0.so.0
Backtrace stopped: frame did not save the PC
#0  0xffffe410 in __kernel_vsyscall ()


=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Aborted


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