[Gtk-sharp-list] segfault on void object

Martin Persenius martin.persenius at gmail.com
Mon Mar 26 12:21:34 EDT 2007


Hi! I thought this was really standard/simple functionality, so I have no
idea how to solve this. Relevant code (abbreviated) and error message
included below. Error happens every time.

Thanks!

Take care,
Martin

   1. namespace GSokoban {
   2.         public class MainWindow : Gnome.Window {
   3.                 private SettingsWindow settings_window;
   4.
   5.                 public MainWindow() {
   6.                         Glade. XML gxml =
new<http://www.google.com/search?q=new+msdn.microsoft.com>Glade.
   XML(null , "gsokoban-2.glade", "main_window", null);
   7.                         gxml. Autoconnect(this);
   8.
   9.                         settings_window =
new<http://www.google.com/search?q=new+msdn.microsoft.com>SettingsWindow
   ();
   10.                 }
   11.
   12.                 private void OnSettingsActivate(object sender,
   EventArgs args) {
   13.                         settings_window. Show();
   14.                 }
   15.         }
   16.
   17.         public class SettingsWindow : Gtk.Window {
   18.                 private Gtk.Window settings_window;
   19.
   20.                 public SettingsWindow() : base(WindowType.
   Toplevel) {
   21.                         base.Name = "settings_window";
   22.                         base.Title = "Settings";
   23. [.......]
   24.                         base.Add (settings_vbox1);
   25.                         settings_vbox1.Show();
   26.                 }
   27.
   28.                 private void OnDeleteEvent(object sender,
   DeleteEventArgs args) {
   29.                         this.Hide();
   30.                 }
   31.         }
   32. }
   33.
   34. ERROR:
   35. DEBUG: OnSettingsActivate
   36. OnDeleteEvent
   37. DEBUG: OnSettingsActivate
   38. Stacktrace:
   39.
   40.   at (wrapper managed-to-native) Gtk.Widget.gtk_widget_show (
   intptr) <0x00004>
   41.   at (wrapper managed-to-native) Gtk.Widget.gtk_widget_show (intptr
   ) <0xffffffff>
   42.   at Gtk.Widget.Show () <0x0001a>
   43.   at GSokoban.MainWindow.OnSettingsActivate (object,System .
   EventArgs) [0x0000a] in /home/pmfp/Projects/gsokoban-2/gsokoban -2
   /windows.cs:47
   44.   at (wrapper delegate-invoke) System .MulticastDelegate.
   invoke_void_object_EventArgs (object,System.EventArgs ) <0xffffffff>
   45.   at GLib.Signal.voidObjectCallback (intptr,intptr ) <0x00093>
   46.   at (wrapper native-to-managed) GLib.Signal. voidObjectCallback (
   intptr,intptr) <0xffffffff>
   47.   at (wrapper managed-to-native ) Gtk.Application.gtk_main ()<0x00004>
   48.   at ( wrapper managed-to-native) Gtk.Application.gtk_main ()<0xffffffff>
   49.   at Gtk.Application.Run () <0x00007>
   50.   at GSokoban. GSokoban.Main (string[]) [0x0002c ]
in/home/pmfp/Projects/gsokoban
   -2/gsokoban-2/gsokoban-2.cs:54
   51.   at (wrapper runtime-invoke) System.Object.runtime_invoke_void_string
   [] (object,intptr,intptr,intptr) <0xffffffff>
   52.
   53. Native stacktrace:
   54.
   55.         mono [0x8179af1]
   56.         mono [0x815c62b]
   57.         [0xb7f49440 ]
   58.         [0xb5f9bb60]
   59.         [0xb5f9bb1b ]
   60.         [0xb61e06a8]
   61.         [0xb61d8047 ]
   62.         [0xb5f9e07c]
   63.         [0xb61e066b ]
   64.         /usr/lib/libgobject-2.0.so.0(g_cclosure_marshal_VOID__VOID+0x4b
   ) [0xb69e9e1b]
   65.         /usr/lib/libgobject-2.0.so .0(g_closure_invoke+0x13b) [
   0xb69dc98b]
   66.         /usr/lib/libgobject -2.0.so.0 [0xb69ed213]
   67.         /usr/lib/libgobject-2.0 .so.0(g_signal_emit_valist+0x899)
   [0xb69ee429]
   68.         /usr/lib/libgobject-2.0.so.0(g_signal_emit+0x29) [0xb69ee5d9
   ]
   69.         /usr/lib/libgtk-x11-2.0.so.0(gtk_widget_activate+0x92 ) [
   0xb6e00042]
   70.         /usr/lib/libgtk-x11-2.0.so .0(
   gtk_menu_shell_activate_item+0x122) [0xb6d1e262]
   71.         /usr/lib/libgtk-x11 -2.0.so.0 [0xb6d1f810]
   72.         /usr/lib/libgtk-x11 -2.0.so.0 [0xb6d13d3f]
   73.         /usr/lib/libgtk-x11-2.0 .so.0(
   _gtk_marshal_BOOLEAN__BOXED+0x60) [0xb6d12250]
   74.         /usr/lib/libgobject-2.0.so.0 [0xb69daf49]
   75.         /usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x13b) [0xb69dc98b
   ]
   76.         /usr/lib/libgobject-2.0.so.0 [0xb69ed56f ]
   77.         /usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x678 )
   [0xb69ee208]
   78.         /usr/lib/libgobject-2.0.so.0 (g_signal_emit+0x29) [
   0xb69ee5d9]
   79.         /usr/lib/libgtk-x11 -2.0.so.0 [0xb6dfbf64]
   80.         /usr/lib/libgtk-x11-2.0 .so.0(gtk_propagate_event+0x193) [
   0xb6d0bbd3]
   81.         /usr/lib/libgtk-x11-2.0.so.0(gtk_main_do_event+0x327) [
   0xb6d0ce07]
   82.         /usr/lib/libgdk-x11-2.0.so.0 [ 0xb6b8feea]
   83.         /usr/lib/libglib-2.0.so.0(g_main_context_dispatch+0x181 )
   [0xb7ec8731]
   84.         /usr/lib/libglib-2.0.so .0 [0xb7ecb7a6]
   85.         /usr/lib/libglib-2.0.so.0 (g_main_loop_run+0x1b7) [
   0xb7ecbb67]
   86.         /usr/lib/libgtk-x11 -2.0.so.0(gtk_main+0xc1) [0xb6d0d281]
   87.         [0xb5f9d045]
   88.         [0xb5f9d008]
   89.         [0xb748c958]
   90.         [0xb748c7c3]
   91.         mono [0x815c4f6]
   92.         mono(mono_runtime_invoke+0x27) [0x80f892f]
   93.         mono(mono_runtime_exec_main+0x142) [ 0x80fd289]
   94.         mono(mono_runtime_run_main+0x276) [0x80fd52f ]
   95.         mono(mono_jit_exec+0xbd) [0x80588cd]
   96.         mono [0x80589aa]
   97.         mono(mono_main+0x165b) [0x805a194]
   98.         mono [0x8057ab6]
   99.         /lib/tls/i686/cmov/libc. so.6(__libc_start_main+0xc8) [
   0xb7d3fea8]
   100.         mono [0x8057a11]
   101.
   102. Debug info from gdb:
   103.
   104. Using host libthread_db library
   "/lib/tls/i686/cmov/libthread_db.so.1".
   105. [Thread debugging using libthread_db enabled]
   106. [ New <http://www.google.com/search?q=new+msdn.microsoft.com>Thread
   -1210931520 (LWP 14212)]
   107. [New <http://www.google.com/search?q=new+msdn.microsoft.com>Thread
   -1219974224 (LWP 14217 )]
   108. [New <http://www.google.com/search?q=new+msdn.microsoft.com>Thread
   -1214268496 (LWP 14216)]
   109. 0xb7f49410 in ?? ()
   110.   3 Thread -1214268496 (LWP 14216)  0xb7f49410 in ?? ( )
   111.   2 Thread -1219974224 (LWP 14217)  0xb7f49410 in ?? ()
   112.   1 Thread -1210931520 ( LWP 14212)  0xb7f49410 in ?? ()
   113.
   114. Thread 3 (Thread -1214268496 (LWP 14216) ):
   115. #0  0xb7f49410 in ?? ()
   116. #1  0xb79fb458 in ?? ()
   117. #2  0x0821d3a8 in ?? ()
   118. #3  0x00000000 in ?? ()
   119.
   120. Thread 2 (Thread -1219974224 (LWP 14217)):
   121. #0  0xb7f49410 in ?? ()
   122. #1  0xb748a288 in ?? ()
   123. #2  0x0000000b in ?? ()
   124. #3  0x00000000 in ?? ()
   125.
   126. Thread 1 (Thread -1210931520 (LWP 14212)):
   127. #0  0xb7f49410 in ?? ()
   128. #1  0xbfe5898c in ?? ()
   129. #2  0x00000000 in ?? ()
   130. #0  0xb7f49410 in ?? ()
   131.
   132.
   133. =================================================================
   134. Got a SIGSEGV while executing native code. This usually indicates
   135. a fatal error in the mono runtime or one of the native libraries
   136. used by your application.
   137. =================================================================
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