<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta name=Generator content="Microsoft Word 12 (filtered medium)"> <style>  </style>  </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> Hi<o:p></o:p> I'm getting a very infrequent ( once every 10-15 days ) crash of my application. Based on the core dump backtrace, it’s crashing while redrawing the UI during the function cairo_pattern_destroy. <o:p></o:p> <![if !supportLists]>· <![endif]>wxWidgets version 2.95 <o:p></o:p> <![if !supportLists]>· <![endif]>Cairo version 1.8.0 <o:p></o:p> <![if !supportLists]>· <![endif]>Fedora core 10 <o:p></o:p> <![if !supportLists]>· <![endif]>LXDE windows manager<o:p></o:p> <div style='border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 1.0pt 0in'> Here is the full backtrace for one of the crashes. I have seen 6 backtraces so far and they all end at __libc_free in cairo_pattern_destroy. If anyone has any suggestions it would be greatly appreciated.<o:p></o:p> Thank you!<o:p></o:p> Caleb<o:p></o:p> <o:p> </o:p> </div> #0 __libc_free (mem=0x7) at malloc.c:3599<o:p></o:p> 3599 if (chunk_is_mmapped(p)) /* release mmapped memory. */<o:p></o:p> (gdb) bt<o:p></o:p> #0 __libc_free (mem=0x7) at malloc.c:3599<o:p></o:p> #1 0x00ff76d6 in cairo_pattern_destroy (pattern=0xc7b5088)<o:p></o:p> at cairo-pattern.c:738<o:p></o:p> #2 0x00fe7a5d in _cairo_gstate_fini (gstate=0xd20bc00) at cairo-gstate.c:204<o:p></o:p> #3 0x00fe7a98 in _cairo_gstate_restore (gstate=0x0, freelist=0xdb2e1f4)<o:p></o:p> at cairo-gstate.c:260<o:p></o:p> #4 0x00fe1ffd in cairo_restore (cr=0xdb2e070) at cairo.c:363<o:p></o:p> #5 0x07881fe2 in gdk_pango_renderer_draw_glyphs (renderer=0xc50d800, <o:p></o:p> font=0xa29d808, glyphs=0xceed960, x=129024, y=91136) at gdkpango.c:247<o:p></o:p> #6 0x07d345ea in pango_renderer_draw_glyphs (renderer=0xc50d800, <o:p></o:p> font=0xa29d808, glyphs=0xceed960, x=129024, y=91136)<o:p></o:p> at pango-renderer.c:639<o:p></o:p> #7 0x07d3466e in pango_renderer_default_draw_glyph_item (renderer=0xc50d800, <o:p></o:p> text=0xd411b00 "Pause", glyph_item=0xb2e11d80, x=129024, y=91136)<o:p></o:p> at pango-renderer.c:715<o:p></o:p> #8 0x07d3455a in pango_renderer_draw_glyph_item (renderer=0xc50d800, <o:p></o:p> text=0xd411b00 "Pause", glyph_item=0xb2e11d80, x=129024, y=91136)<o:p></o:p> at pango-renderer.c:703<o:p></o:p> #9 0x07d34dd3 in pango_renderer_draw_layout_line (renderer=0xc50d800, <o:p></o:p> line=0xd242648, x=129024, y=91136) at pango-renderer.c:568<o:p></o:p> #10 0x07d350e1 in pango_renderer_draw_layout (renderer=0xc50d800, <o:p></o:p> layout=0xd5a5e10, x=129024, y=77824) at pango-renderer.c:192<o:p></o:p> #11 0x07880f11 in IA__gdk_draw_layout_with_colors (drawable=0xc690580, <o:p></o:p> ---Type <return> to continue, or q <return> to quit---<o:p></o:p> gc=0xa26f050, x=126, y=76, layout=0xd5a5e10, foreground=0x0, <o:p></o:p> background=0x0) at gdkpango.c:951<o:p></o:p> #12 0x078810c1 in IA__gdk_draw_layout (drawable=0xc690580, gc=0xa26f050, <o:p></o:p> x=126, y=76, layout=0xd5a5e10) at gdkpango.c:1013<o:p></o:p> #13 0x07a96e92 in gtk_default_draw_layout (style=0xa360500, window=0xc690580, <o:p></o:p> state_type=GTK_STATE_INSENSITIVE, use_text=0, area=0xcdf165c, <o:p></o:p> widget=0xd7afa60, detail=0x7c42081 "label", x=126, y=76, layout=0xda63110)<o:p></o:p> at gtkstyle.c:5084<o:p></o:p> #14 0x07a92fa2 in IA__gtk_paint_layout (style=0xa360500, window=0xc690580, <o:p></o:p> state_type=GTK_STATE_INSENSITIVE, use_text=0, area=0xcdf165c, <o:p></o:p> widget=0xd7afa60, detail=0x7c42081 "label", x=126, y=76, layout=0xda63110)<o:p></o:p> at gtkstyle.c:6401<o:p></o:p> #15 0x07a0ea9c in gtk_label_expose (widget=0xd7afa60, event=0xcdf1650)<o:p></o:p> at gtklabel.c:2848<o:p></o:p> #16 0x07a1e116 in _gtk_marshal_BOOLEAN__BOXED (closure=0xa1daae8, <o:p></o:p> return_value=0xbfae5910, n_param_values=2, param_values=0xdb00740, <o:p></o:p> invocation_hint=0xbfae58fc, marshal_data=0x7a0e990) at gtkmarshalers.c:84<o:p></o:p> #17 0x05a80959 in g_type_class_meta_marshal (closure=0xa1daae8, <o:p></o:p> return_value=0xbfae5910, n_param_values=2, param_values=0xdb00740, <o:p></o:p> invocation_hint=0xbfae58fc, marshal_data=0xc8) at gclosure.c:878<o:p></o:p> #18 0x05a82108 in IA__g_closure_invoke (closure=0xa1daae8, <o:p></o:p> return_value=0xbfae5910, n_param_values=2, param_values=0xdb00740, <o:p></o:p> invocation_hint=0xbfae58fc) at gclosure.c:767<o:p></o:p> ---Type <return> to continue, or q <return> to quit---<o:p></o:p> #19 0x05a982cd in signal_emit_unlocked_R (node=0xa1dabe0, detail=0, <o:p></o:p> instance=0xd7afa60, emission_return=0xbfae5a48, <o:p></o:p> instance_and_params=0xdb00740) at gsignal.c:3282<o:p></o:p> #20 0x05a99bbb in IA__g_signal_emit_valist (instance=0xd7afa60, signal_id=38, <o:p></o:p> detail=0, var_args=0xbfae5aa0 "ï¿½Zï¿½ï¿½P\026ï¿½\f`ï¿½z\rï¿½\225ï¿½\a`ï¿½z\rho\035\n")<o:p></o:p> at gsignal.c:2987<o:p></o:p> #21 0x05a9a1b6 in IA__g_signal_emit (instance=0xd7afa60, signal_id=38, <o:p></o:p> detail=0) at gsignal.c:3034<o:p></o:p> #22 0x07b333ae in gtk_widget_event_internal (widget=0xd7afa60, event=0xcdf1650)<o:p></o:p> at gtkwidget.c:4745<o:p></o:p> #23 0x079941a3 in IA__gtk_container_propagate_expose (container=0xc050930, <o:p></o:p> child=0xd7afa60, event=0xda6fdf8) at gtkcontainer.c:2687<o:p></o:p> #24 0x079941d1 in gtk_container_expose_child (child=0xd7afa60, <o:p></o:p> client_data=0xbfae5b68) at gtkcontainer.c:2575<o:p></o:p> #25 0x0795e61d in gtk_bin_forall (container=0xc050930, include_internals=1, <o:p></o:p> callback=0x79941b0 <gtk_container_expose_child>, callback_data=0xbfae5b68)<o:p></o:p> at gtkbin.c:128<o:p></o:p> #26 0x07994d66 in IA__gtk_container_forall (container=0xc050930, <o:p></o:p> callback=0x79941b0 <gtk_container_expose_child>, callback_data=0xbfae5b68)<o:p></o:p> at gtkcontainer.c:1455<o:p></o:p> #27 0x07996450 in gtk_container_expose (widget=0xc050930, event=0xda6fdf8)<o:p></o:p> at gtkcontainer.c:2598<o:p></o:p> #28 0x079689b1 in gtk_button_expose (widget=0xc050930, event=0xda6fdf8)<o:p></o:p> ---Type <return> to continue, or q <return> to quit---<o:p></o:p> at gtkbutton.c:1348<o:p></o:p> #29 0x07a1e116 in _gtk_marshal_BOOLEAN__BOXED (closure=0xa1daae8, <o:p></o:p> return_value=0xbfae5d70, n_param_values=2, param_values=0xd6b2140, <o:p></o:p> invocation_hint=0xbfae5d5c, marshal_data=0x7968930) at gtkmarshalers.c:84<o:p></o:p> #30 0x05a80959 in g_type_class_meta_marshal (closure=0xa1daae8, <o:p></o:p> return_value=0xbfae5d70, n_param_values=2, param_values=0xd6b2140, <o:p></o:p> invocation_hint=0xbfae5d5c, marshal_data=0xc8) at gclosure.c:878<o:p></o:p> #31 0x05a82108 in IA__g_closure_invoke (closure=0xa1daae8, <o:p></o:p> return_value=0xbfae5d70, n_param_values=2, param_values=0xd6b2140, <o:p></o:p> invocation_hint=0xbfae5d5c) at gclosure.c:767<o:p></o:p> #32 0x05a982cd in signal_emit_unlocked_R (node=0xa1dabe0, detail=0, <o:p></o:p> instance=0xc050930, emission_return=0xbfae5ea8, <o:p></o:p> instance_and_params=0xd6b2140) at gsignal.c:3282<o:p></o:p> #33 0x05a99bbb in IA__g_signal_emit_valist (instance=0xc050930, signal_id=38, <o:p></o:p> detail=0, <o:p></o:p> var_args=0xbfae5f00 "\030_ï¿½ï¿½ï¿½ï¿½ï¿½\r0\t\005\fï¿½\225ï¿½\a0\t\005\fho\035\n")<o:p></o:p> at gsignal.c:2987<o:p></o:p> #34 0x05a9a1b6 in IA__g_signal_emit (instance=0xc050930, signal_id=38, <o:p></o:p> detail=0) at gsignal.c:3034<o:p></o:p> #35 0x07b333ae in gtk_widget_event_internal (widget=0xc050930, event=0xda6fdf8)<o:p></o:p> at gtkwidget.c:4745<o:p></o:p> #36 0x079941a3 in IA__gtk_container_propagate_expose (container=0xc010228, <o:p></o:p> child=0xc050930, event=0xbfae63f4) at gtkcontainer.c:2687<o:p></o:p> ---Type <return> to continue, or q <return> to quit---<o:p></o:p> #37 0x079941d1 in gtk_container_expose_child (child=0xc050930, <o:p></o:p> client_data=0xbfae5fd8) at gtkcontainer.c:2575<o:p></o:p> #38 0x079d2f79 in gtk_fixed_forall (container=0xc010228, include_internals=1, <o:p></o:p> callback=0x79941b0 <gtk_container_expose_child>, callback_data=0xbfae5fd8)<o:p></o:p> at gtkfixed.c:449<o:p></o:p> #39 0x07994d66 in IA__gtk_container_forall (container=0xc010228, <o:p></o:p> callback=0x79941b0 <gtk_container_expose_child>, callback_data=0xbfae5fd8)<o:p></o:p> at gtkcontainer.c:1455<o:p></o:p> #40 0x07996450 in gtk_container_expose (widget=0xc010228, event=0xbfae63f4)<o:p></o:p> at gtkcontainer.c:2598<o:p></o:p> #41 0x07a1e116 in _gtk_marshal_BOOLEAN__BOXED (closure=0xa1daae8, <o:p></o:p> return_value=0xbfae61b0, n_param_values=2, param_values=0xd1e88c8, <o:p></o:p> invocation_hint=0xbfae619c, marshal_data=0x79963b0) at gtkmarshalers.c:84<o:p></o:p> #42 0x05a80959 in g_type_class_meta_marshal (closure=0xa1daae8, <o:p></o:p> return_value=0xbfae61b0, n_param_values=2, param_values=0xd1e88c8, <o:p></o:p> invocation_hint=0xbfae619c, marshal_data=0xc8) at gclosure.c:878<o:p></o:p> #43 0x05a821db in IA__g_closure_invoke (closure=0xa1daae8, <o:p></o:p> return_value=0xbfae61b0, n_param_values=2, param_values=0xd1e88c8, <o:p></o:p> invocation_hint=0xbfae619c) at gclosure.c:767<o:p></o:p> #44 0x05a982cd in signal_emit_unlocked_R (node=0xa1dabe0, detail=0, <o:p></o:p> instance=0xc010228, emission_return=0xbfae62e8, <o:p></o:p> instance_and_params=0xd1e88c8) at gsignal.c:3282<o:p></o:p> #45 0x05a99bbb in IA__g_signal_emit_valist (instance=0xc010228, signal_id=38, <o:p></o:p> ---Type <return> to continue, or q <return> to quit---<o:p></o:p> detail=0, <o:p></o:p> var_args=0xbfae6340 "Xcï¿½ï¿½ï¿½cï¿½ï¿½(\002\001\fï¿½\225ï¿½\a(\002\001\fho\035\n")<o:p></o:p> at gsignal.c:2987<o:p></o:p> #46 0x05a9a1b6 in IA__g_signal_emit (instance=0xc010228, signal_id=38, <o:p></o:p> detail=0) at gsignal.c:3034<o:p></o:p> #47 0x07b333ae in gtk_widget_event_internal (widget=0xc010228, <o:p></o:p> event=0xbfae63f4) at gtkwidget.c:4745<o:p></o:p> #48 0x07a1821d in IA__gtk_main_do_event (event=0xbfae63f4) at gtkmain.c:1553<o:p></o:p> #49 0x07892625 in gdk_window_process_updates_internal (window=0xc690580)<o:p></o:p> at gdkwindow.c:2598<o:p></o:p> #50 0x07892c3f in IA__gdk_window_process_all_updates () at gdkwindow.c:2664<o:p></o:p> #51 0x07994eff in gtk_container_idle_sizer (data=0x0) at gtkcontainer.c:1309<o:p></o:p> #52 0x078760cb in gdk_threads_dispatch (data=0xc935530) at gdk.c:473<o:p></o:p> #53 0x066122d1 in g_idle_dispatch (source=0xd663908, callback=0xffffffff, <o:p></o:p> user_data=0xc935530) at gmain.c:4235<o:p></o:p> #54 0x06614208 in g_main_dispatch () at gmain.c:2144<o:p></o:p> #55 IA__g_main_context_dispatch (context=0xa1d5508) at gmain.c:2697<o:p></o:p> #56 0x066178b3 in g_main_context_iterate (context=0xa1d5508, block=1, <o:p></o:p> dispatch=1, self=0xa1ba5e0) at gmain.c:2778<o:p></o:p> #57 0x06617dd2 in IA__g_main_loop_run (loop=0xbb03cc0) at gmain.c:2986<o:p></o:p> #58 0x07a18489 in IA__gtk_main () at gtkmain.c:1200<o:p></o:p> #59 0x006b333d in wxGUIEventLoop::DoRun ()<o:p></o:p> from /usr/local/lib/libwx_gtk2u_core-2.9.so.5<o:p></o:p> <o:p> </o:p> <o:p> </o:p> </div> </body> </html>