warning from GtkBuilder

[Ben Pfaff]

Hi John, I am getting the following warning from GtkBuilder
immediately at PSPPIRE startup:

Gtk-CRITICAL **: gtk_label_set_label: assertion `str != NULL' failed
aborting...

Backtrace:

#0  0xb7fd2424 in __kernel_vsyscall ()
#1  0xb6faf640 in raise () from /lib/i686/cmov/libc.so.6
#2  0xb6fb1018 in abort () from /lib/i686/cmov/libc.so.6
#3  0xb768ba99 in g_logv () from /usr/lib/libglib-2.0.so.0
#4  0xb768bac9 in g_log () from /usr/lib/libglib-2.0.so.0
#5  0xb768bd0b in g_return_if_fail_warning () from /usr/lib/libglib-2.0.so.0
#6  0xb7aeeb59 in IA__gtk_label_set_label (label=0xb7ce967c, str=0x0)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtklabel.c:1331
#7  0xb7a18aec in connect_proxy (action=0x99bd190, proxy=0x99e1c10)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkaction.c:735
#8  0xb7a17ad8 in IA__gtk_action_create_menu_item (action=0x99bd190)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkaction.c:946
#9  0xb7c1cd5b in update_node (self=0x99b86d0, node=0x99b5180, in_popup=0)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkuimanager.c:2546
#10 0xb7c1bf91 in update_node (self=0x99b86d0, node=0x99b4928, in_popup=0)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkuimanager.c:2706
#11 0xb7c1bf91 in update_node (self=0x99b86d0, node=0x99b4910, in_popup=0)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkuimanager.c:2706
#12 0xb7c1bf91 in update_node (self=0x99b86d0, node=0x99bbef8, in_popup=0)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkuimanager.c:2706
#13 0xb7c1cef8 in do_updates (self=0x99b86d0)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkuimanager.c:2748
#14 0xb7c1d702 in gtk_ui_manager_real_get_widget (self=0x99b86d0, 
    path=0x98bcbe8 "ui/menubar")
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkuimanager.c:552
#15 0xb7c1ea5a in IA__gtk_ui_manager_get_widget (self=0x99b86d0, 
    path=0x98bcbe8 "ui/menubar")
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkuimanager.c:824
#16 0xb7c1f0e0 in gtk_ui_manager_buildable_construct_child (
    buildable=0x99b86d0, builder=0x99ba0d8, id=0x99d5cf0 "menubar")
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkuimanager.c:488
#17 0xb7a285ad in IA__gtk_buildable_construct_child (buildable=0x99b86d0, 
    builder=0x99ba0d8, name=0x99d5cf0 "menubar")
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkbuildable.c:217
#18 0xb7a2a3b6 in _gtk_builder_construct (builder=0x99ba0d8, info=0x99d5830)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkbuilder.c:403
#19 0xb7a2b370 in builder_construct (data=0x99b6db0, object_info=0x99d5830)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkbuilderparser.c:201
#20 0xb7a2cbc5 in end_element (context=0x99bee90, 
    element_name=<value optimized out>, user_data=0x99b6db0, error=0xbf8ed53c)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkbuilderparser.c:810
#21 0xb768976a in g_markup_parse_context_parse ()
   from /usr/lib/libglib-2.0.so.0
#22 0xb7a2b1e6 in _gtk_builder_parser_parse_buffer (builder=0x99ba0d8, 
    filename=0x80a0f70 "/usr/local/share/pspp/data-editor.ui", 
    buffer=0x99c0e98 "<?xml version=\"1.0\"?>\n<!--*- mode: xml 
-*-->\n<interface>\n  <object class=\"GtkUIManager\" id=\"uimanager1\">\n    
<child>\n      <object class=\"GtkActionGroup\" id=\"actiongroup1\">\n        
<child>\n          <"..., length=83461, error=0xbf8ed5b0)
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkbuilderparser.c:962
#23 0xb7a2abd3 in IA__gtk_builder_add_from_file (builder=0x99ba0d8, 
    filename=0x80a0f70 "/usr/local/share/pspp/data-editor.ui", 
    error=0xbf8ed5f8) at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkbuilder.c:651
#24 0x080651e3 in builder_new_real (
    name=0x80a0f70 "/usr/local/share/pspp/data-editor.ui")
    at ../src/ui/gui/helper.c:112
#25 0x0806db2f in psppire_data_window_init (de=0x99be5c8)
    at ../src/ui/gui/psppire-data-window.c:1031
#26 0xb772ce66 in g_type_create_instance () from /usr/lib/libgobject-2.0.so.0
#27 0xb77121e2 in ?? () from /usr/lib/libgobject-2.0.so.0
#28 0x099ba1e0 in ?? ()
#29 0x080a06ce in ?? ()
#30 0xb70daff4 in ?? () from /lib/i686/cmov/libc.so.6
#31 0x00000009 in ?? ()
#32 0x00000009 in ?? ()
#33 0xbf8ed758 in ?? ()
#34 0xb6ff6525 in malloc () from /lib/i686/cmov/libc.so.6
#35 0xb77129a8 in g_object_newv () from /usr/lib/libgobject-2.0.so.0
#36 0xb7713556 in g_object_new_valist () from /usr/lib/libgobject-2.0.so.0
#37 0xb7713660 in g_object_new () from /usr/lib/libgobject-2.0.so.0
#38 0x0806d53e in psppire_data_window_new ()
    at ../src/ui/gui/psppire-data-window.c:1782
#39 0x08067ae4 in initialize (clp=0x987a578, argc=1, argv=0xbf8edbc4)
    at ../src/ui/gui/psppire.c:154
#40 0x08065632 in run_inner_loop (data=0xbf8edb04) at ../src/ui/gui/main.c:121
#41 0xb7b01576 in IA__gtk_main ()
    at /tmp/buildd/gtk+2.0-2.12.5/gtk/gtkmain.c:2233
#42 0x080655df in main (argc=1, argv=0xbf8edbc4) at ../src/ui/gui/main.c:180

It's not immediately obvious to me how to track this down, or
even whether it's our bug or GTK+'s.  Any idea?
-- 
Ben Pfaff 
http://benpfaff.org