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>> quintus@kerberos => /opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/samples/minimal
$ ruby -dw minimal.rb
Exception `LoadError' at <internal:lib/rubygems/custom_require>:29 - no such file to load -- rubygems/defaults/operating_system
Exception `LoadError' at <internal:lib/rubygems/custom_require>:37 - no such file to load -- rubygems/defaults/operating_system
Exception `LoadError' at <internal:lib/rubygems/custom_require>:29 - no such file to load -- rubygems/defaults/ruby
Exception `LoadError' at <internal:lib/rubygems/custom_require>:37 - no such file to load -- rubygems/defaults/ruby
Exception `NameError' at /opt/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/syck/tag.rb:81 - method `yaml_as' not defined in Module
<internal:lib/rubygems/custom_require>:29: warning: loading in progress, circular require considered harmful - /opt/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/rubygems.rb
  from minimal.rb:5:in `<main>'
  from <internal:lib/rubygems/custom_require>:29:in `require'
  from <internal:lib/rubygems/custom_require>:29:in `require'
  from /opt/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/rubygems.rb:1136:in `<top (required)>'
  from /opt/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/rubygems.rb:968:in `load_plugins'
  from /opt/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/rubygems.rb:968:in `each'
  from /opt/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/rubygems.rb:976:in `block in load_plugins'
  from /opt/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/rubygems.rb:976:in `load'
  from /opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/hanna-0.1.12/lib/rubygems_plugin.rb:2:in `<top (required)>'
  from <internal:lib/rubygems/custom_require>:29:in `require'
  from <internal:lib/rubygems/custom_require>:29:in `require'
  from /opt/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/rubygems/doc_manager.rb:8:in `<top (required)>'
  from <internal:lib/rubygems/custom_require>:29:in `require'
  from <internal:lib/rubygems/custom_require>:29:in `require'
Exception `LoadError' at <internal:lib/rubygems/custom_require>:29 - no such file to load -- wx
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wxruby2.so: warning: method redefined; discarding old get_alpha_data
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wxruby2.so: warning: method redefined; discarding old get_rgb_data
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/clientdc.rb:8: warning: method redefined; discarding old initialize
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/paintdc.rb:7: warning: method redefined; discarding old initialize
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/data_object.rb:3: warning: method redefined; discarding old get_preferred_format
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/data_object.rb:7: warning: method redefined; discarding old get_format_count
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/data_object.rb:11: warning: method redefined; discarding old get_data_size
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/validator.rb:4: warning: method redefined; discarding old clone
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/data_object_simple.rb:3: warning: method redefined; discarding old get_data_size
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/app.rb:30: warning: method redefined; discarding old on_assert_failure

(wxruby:15467): Gtk-WARNING **: Error parsing gtk-icon-sizes string:
  'panel-menu=24,24
panel=20,20
gtk-button=18,18
gtk-large-toolbar=24,24'
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/app.rb:16: [BUG] Segmentation fault
ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-linux]

-- control frame ----------
c:0006 p:---- s:0017 b:0017 l:000016 d:000016 CFUNC  :on_run
c:0005 p:---- s:0015 b:0015 l:000014 d:000014 CFUNC  :main_loop
c:0004 p:0053 s:0012 b:0012 l:000011 d:000011 METHOD /opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/app.rb:16
c:0003 p:0062 s:0006 b:0006 l:001148 d:001c38 EVAL   minimal.rb:73
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:001148 d:001148 TOP   
---------------------------
-- Ruby level backtrace information ----------------------------------------
minimal.rb:73:in `<main>'
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/app.rb:16:in `run'
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/app.rb:16:in `main_loop'
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wx/classes/app.rb:16:in `on_run'

-- C level backtrace information -------------------------------------------
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(rb_vm_bugreport+0x5f) [0x7fb98243c48f]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(+0x5fff6) [0x7fb982324ff6]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(rb_bug+0xb3) [0x7fb982325193]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(+0x109285) [0x7fb9823ce285]
/lib/libpthread.so.0(+0xfb40) [0x7fb9820b7b40]
/usr/lib/libpixman-1.so.0(pixman_image_composite32+0x668) [0x7fb976b5f9e8]
/usr/lib/libcairo.so.2(+0x29463) [0x7fb9780b1463]
/usr/lib/libcairo.so.2(+0x2a61c) [0x7fb9780b261c]
/usr/lib/libcairo.so.2(+0x2c31d) [0x7fb9780b431d]
/usr/lib/libcairo.so.2(+0x2c55e) [0x7fb9780b455e]
/usr/lib/libcairo.so.2(+0x49f56) [0x7fb9780d1f56]
/usr/lib/libcairo.so.2(+0x2243e) [0x7fb9780aa43e]
/usr/lib/libcairo.so.2(cairo_fill_preserve+0x1d) [0x7fb9780a143d]
/usr/lib/librsvg-2.so.2(+0x29f8e) [0x7fb96f89df8e]
/usr/lib/librsvg-2.so.2(+0x248a0) [0x7fb96f8988a0]
/usr/lib/librsvg-2.so.2(+0x1d258) [0x7fb96f891258]
/usr/lib/librsvg-2.so.2(+0x1eb53) [0x7fb96f892b53]
/usr/lib/librsvg-2.so.2(+0x1f093) [0x7fb96f893093]
/usr/lib/librsvg-2.so.2(+0x1eb53) [0x7fb96f892b53]
/usr/lib/librsvg-2.so.2(+0x1ef64) [0x7fb96f892f64]
/usr/lib/librsvg-2.so.2(+0x1eb53) [0x7fb96f892b53]
/usr/lib/librsvg-2.so.2(rsvg_handle_render_cairo_sub+0xca) [0x7fb96f89eb1a]
/usr/lib/librsvg-2.so.2(rsvg_handle_get_pixbuf_sub+0x105) [0x7fb96f89f065]
/usr/lib/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-svg.so(+0xd6b) [0x7fb96faa9d6b]
/usr/lib/libgdk_pixbuf-2.0.so.0(gdk_pixbuf_loader_close+0xf9) [0x7fb97d655889]
/usr/lib/libgdk_pixbuf-2.0.so.0(+0x89a6) [0x7fb97d6539a6]
/usr/lib/libgdk_pixbuf-2.0.so.0(gdk_pixbuf_new_from_stream_at_scale+0x81) [0x7fb97d653b01]
/usr/lib/libgtk-x11-2.0.so.0(+0x104eec) [0x7fb97e36eeec]
/usr/lib/libgtk-x11-2.0.so.0(gtk_icon_info_load_icon+0x72) [0x7fb97e36f612]
/usr/lib/libgtk-x11-2.0.so.0(gtk_icon_theme_load_icon+0x13f) [0x7fb97e37185f]
/usr/lib/libgtk-x11-2.0.so.0(gtk_icon_set_render_icon+0x5ea) [0x7fb97e36bfaa]
/usr/lib/libgtk-x11-2.0.so.0(gtk_widget_render_icon+0xea) [0x7fb97e4c334a]
/usr/lib/libgtk-x11-2.0.so.0(+0x1185d4) [0x7fb97e3825d4]
/usr/lib/libgtk-x11-2.0.so.0(+0x1185f9) [0x7fb97e3825f9]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0xa9) [0x7fb97cae29b9]
/usr/lib/libgobject-2.0.so.0(+0x23da1) [0x7fb97caf7da1]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x7e6) [0x7fb97caf9996]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_by_name+0x208) [0x7fb97caf9ce8]
/usr/lib/libgtk-x11-2.0.so.0(+0x1a5138) [0x7fb97e40f138]
/usr/lib/libgtk-x11-2.0.so.0(+0x11ae2f) [0x7fb97e384e2f]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0xa9) [0x7fb97cae29b9]
/usr/lib/libgobject-2.0.so.0(+0x23da1) [0x7fb97caf7da1]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x7e6) [0x7fb97caf9996]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_by_name+0x208) [0x7fb97caf9ce8]
/usr/lib/libgtk-x11-2.0.so.0(+0x1a5138) [0x7fb97e40f138]
/usr/lib/libgtk-x11-2.0.so.0(+0x1422af) [0x7fb97e3ac2af]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x15e) [0x7fb97cae2a6e]
/usr/lib/libgobject-2.0.so.0(+0x23da1) [0x7fb97caf7da1]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x7e6) [0x7fb97caf9996]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_by_name+0x208) [0x7fb97caf9ce8]
/usr/lib/libgtk-x11-2.0.so.0(+0x1a5138) [0x7fb97e40f138]
/usr/lib/libgtk-x11-2.0.so.0(+0x13c080) [0x7fb97e3a6080]
/usr/lib/libgtk-x11-2.0.so.0(gtk_menu_popup+0x1eb) [0x7fb97e3a7a7b]
/usr/lib/libgtk-x11-2.0.so.0(+0x1445a7) [0x7fb97e3ae5a7]
/usr/lib/libgtk-x11-2.0.so.0(+0x1446b9) [0x7fb97e3ae6b9]
/usr/lib/libgtk-x11-2.0.so.0(+0x146d1e) [0x7fb97e3b0d1e]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x15e) [0x7fb97cae2a6e]
/usr/lib/libgobject-2.0.so.0(+0x23da1) [0x7fb97caf7da1]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x7e6) [0x7fb97caf9996]
/usr/lib/libgobject-2.0.so.0(g_signal_emit+0x83) [0x7fb97caf9f53]
/usr/lib/libgtk-x11-2.0.so.0(gtk_menu_item_select+0x50) [0x7fb97e3af930]
/usr/lib/libgtk-x11-2.0.so.0(+0x14a382) [0x7fb97e3b4382]
/usr/lib/libgtk-x11-2.0.so.0(+0x14b2ca) [0x7fb97e3b52ca]
/usr/lib/libgtk-x11-2.0.so.0(+0x13a9d8) [0x7fb97e3a49d8]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x15e) [0x7fb97cae2a6e]
/usr/lib/libgobject-2.0.so.0(+0x24120) [0x7fb97caf8120]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x62b) [0x7fb97caf97db]
/usr/lib/libgobject-2.0.so.0(g_signal_emit+0x83) [0x7fb97caf9f53]
/usr/lib/libgtk-x11-2.0.so.0(+0x2536df) [0x7fb97e4bd6df]
/usr/lib/libgtk-x11-2.0.so.0(gtk_propagate_event+0xc3) [0x7fb97e39ce73]
/usr/lib/libgtk-x11-2.0.so.0(gtk_main_do_event+0x2eb) [0x7fb97e39df4b]
/usr/lib/libgdk-x11-2.0.so.0(+0x5c74c) [0x7fb97e01774c]
/lib/libglib-2.0.so.0(g_main_context_dispatch+0x1f2) [0x7fb97c429342]
/lib/libglib-2.0.so.0(+0x442a8) [0x7fb97c42d2a8]
/lib/libglib-2.0.so.0(g_main_loop_run+0x195) [0x7fb97c42d7b5]
/usr/lib/libgtk-x11-2.0.so.0(gtk_main+0xa7) [0x7fb97e39e3e7]
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wxruby2.so(_ZN11wxEventLoop3RunEv+0x48) [0x7fb97fbafeb8]
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wxruby2.so(_ZN9wxAppBase8MainLoopEv+0x4b) [0x7fb97f99f8db]
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wxruby2.so(+0x4b94b8) [0x7fb97f2b84b8]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(+0x16de46) [0x7fb982432e46]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(rb_funcall+0x115) [0x7fb982433785]
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wxruby2.so(_ZN16SwigDirector_App5OnRunEv+0x2d) [0x7fb97f2ba48d]
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wxruby2.so(_Z7wxEntryRiPPw+0x85) [0x7fb97f8c85f5]
/opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/lib/wxruby2.so(+0x4b93a0) [0x7fb97f2b83a0]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(+0x172948) [0x7fb982437948]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(+0x165329) [0x7fb98242a329]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(+0x16c4aa) [0x7fb9824314aa]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(rb_iseq_eval_main+0x280) [0x7fb9824318d0]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(+0x647b2) [0x7fb9823297b2]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(ruby_exec_node+0x1d) [0x7fb9823297dd]
/opt/rubies/ruby-1.9.2-p0/lib/libruby.so.1.9(ruby_run_node+0x1e) [0x7fb98232b25e]
ruby(main+0x4b) [0x40094b]
/lib/libc.so.6(__libc_start_main+0xfe) [0x7fb98147bd8e]
ruby() [0x400839]

[NOTE]
You may have encountered a bug in the Ruby interpreter or extension libraries.
Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html

Aborted
>> quintus@kerberos => /opt/rubies/ruby-1.9.2-p0/lib/ruby/gems/1.9.1/gems/wxruby-ruby19-2.0.1-x86_64-linux/samples/minimal
$