[Mono-dev] SIGSEGV in Cairo.CairoAPI:cairo_get/set_matrix()

[Peter Dennis Bartok]

Would you please log a bug in bugzilla for this?

Cheers,
  Peter

-----Original Message-----
From: "Idan Gazit" <idan at fastmail.fm>
To: <mono-devel-list at lists.ximian.com>
Date: 30 October, 2005 03:35
Subject: [Mono-dev] SIGSEGV in Cairo.CairoAPI:cairo_get/set_matrix()


>Hey,
>
>So I manage to segfault when playing with the Graphics.Matrix property.
>Basically anything that would result in a call to cairo_get_matrix or
>cairo_set_matrix segfaults.
>
>The stacktrace for this segfault when doing get is below, but triggering
>it is pretty easy:
>
>// set up graphics here, then
>System.Console.WriteLine(g.Matrix.ToString());
>
>the same for set:
>
>Cairo.Matrix transformMatrix = new Cairo.Matrix ();
>transformMatrix.CreateIdentify ();
>// set up graphics here, then
>g.Matrix = transformMatrix;
>
>
>Should I be talking to the cairo devs aobut this, instead?
>
>-Idan
>
>=================================================================
>Got a SIGSEGV while executing native code. This usually indicates
>a fatal error in the mono runtime or one of the native libraries
>used by your application.
>=================================================================
>
>Stacktrace:
>
>
>Native stacktrace:
>
>in <0x4> (wrapper managed-to-native) Cairo.CairoAPI:cairo_get_matrix
>(intptr,Cairo.Matrix_T)
>in <0xffffffa1> (wrapper managed-to-native)
>Cairo.CairoAPI:cairo_get_matrix (intptr,Cairo.Matrix_T)
>in <0x49> Cairo.Graphics:get_Matrix ()
>in [0xc1] Meshwork.NetworkMap.ZoomableCairoArea:OnExposeEvent
>(Gdk.EventExpose)
>in [0x14] Gtk.Widget:exposeevent_cb (intptr,intptr)
>in <0x49cce3> (wrapper native-to-managed) Gtk.Widget:exposeevent_cb
>(intptr,intptr)
>in <0x4> (wrapper managed-to-native) Gtk.Application:gtk_main ()
>in <0xffffffe7> (wrapper managed-to-native) Gtk.Application:gtk_main ()
>in [0x0] Gtk.Application:Run ()
>in [0xb] MainClass:Main (string[])
>in <0x50bbe2f9> (wrapper runtime-invoke)
>System.Object:runtime_invoke_void_string[] (object,intptr,intptr,intptr)
> mono(mono_handle_native_sigsegv+0x73) [0x813d883]
> mono [0x81108db]
> [0xffffe440]
> /usr/lib/libcairo.so.2(cairo_get_matrix+0x1b) [0xb69343fb]
> [0xb67d4064]
> [0xb67d3fc2]
> [0xb67d0145]
> [0xb67cf725]
> [0xb67cf37e]
> /usr/lib/libgtk-x11-2.0.so.0(_gtk_marshal_BOOLEAN__BOXED+0x58) 
> [0xb6c6c02c]
> /usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x11e) [0xb697b3a8]
> /usr/lib/libgobject-2.0.so.0 [0xb6989c9f]
> /usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x41e) [0xb698aec3]
> /usr/lib/libgobject-2.0.so.0(g_signal_emit+0x29) [0xb698b4c3]
> /usr/lib/libgtk-x11-2.0.so.0 [0xb6d4e16f]
> /usr/lib/libgtk-x11-2.0.so.0(gtk_main_do_event+0x4f7) [0xb6c6ad72]
> /usr/lib/libgdk-x11-2.0.so.0 [0xb6ae6bfa]
> /usr/lib/libgdk-x11-2.0.so.0(gdk_window_process_all_updates+0x95)
>[0xb6ae6ccd]
> /usr/lib/libgdk-x11-2.0.so.0 [0xb6ae6d4e]
> /usr/lib/libglib-2.0.so.0 [0xb7f0d750]
> /usr/lib/libglib-2.0.so.0(g_main_context_dispatch+0x1dc) [0xb7f0b4ee]
> /usr/lib/libglib-2.0.so.0 [0xb7f0e4f6]
> /usr/lib/libglib-2.0.so.0(g_main_loop_run+0x1a1) [0xb7f0e7e3]
> /usr/lib/libgtk-x11-2.0.so.0(gtk_main+0xb4) [0xb6c69e65]
> [0xb67cf6a1]
> [0xb67cf660]
> [0xb74d2f12]
> [0xb74d2813]
> mono(mono_runtime_exec_main+0x52) [0x8090ae2]
> mono(mono_runtime_run_main+0x12f) [0x80934ef]
> mono(mono_main+0xeff) [0x805d26f]
> /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xd2) [0xb7d7bea2]
> mono [0x805be11]
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