How can I find out where is my code causing GLib-GObject-CRITICAL?

Question

When a C/C++ application fails with the following CRITICAL, can you please tell me how can I find out where is the code causing the error?

I have tried to run it in the debugger, trying to do a 'bt when the program fails. But it does not show where is the code causing the CRITICAL:

(process:3155): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.22.3/gobject/gtype.c:2458: initialization assertion failed, use IA__g_type_init() prior to this function

(process:3155): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

(process:3155): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.22.3/gobject/gtype.c:2458: initialization assertion failed, use IA__g_type_init() prior to this function

(process:3155): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.22.3/gobject/gtype.c:2458: initialization assertion failed, use IA__g_type_init() prior to this function

(process:3155): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.22.3/gobject/gtype.c:2458: initialization assertion failed, use IA__g_type_init() prior to this function

(process:3155): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion `G_TYPE_IS_INSTANTIATABLE (instance_type)' failed

(process:3155): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.22.3/gobject/gtype.c:2458: initialization assertion failed, use IA__g_type_init() prior to this function

possible duplicate of how to get GDB to break on a glib assertion failure? — ptomato
– ptomato, Commented Apr 26, 2011 at 8:14

Peter Mortensen · Accepted Answer · 2017-12-10 16:48:10Z

6

You can break on g_log and then do a backtrace from there.

edited Dec 10, 2017 at 16:48

Peter Mortensen

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answered Mar 15, 2010 at 20:16

ptomato

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2 Comments

michael Over a year ago

how can I break on g_log? I don't know what file/line number of g_log since I did not compile gtk/glib library myself? Thank you.

ptomato Over a year ago

Your debugger should allow you to break on a function name. For example, in gdb, type break g_log. Depending on your system, you may need to install some "debug" package, for example glib-debuginfo on Fedora. Often it is already installed automatically.

bratsche · Accepted Answer · 2010-06-14 16:29:38Z

6

You should pass --g-fatal-warnings to your application when you run it inside gdb.

answered Jun 14, 2010 at 16:29

bratsche

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3 Comments

bratsche Over a year ago

Yes it does. With fatal warnings enabled the first call to g_warning() or g_critical() will abort, allowing you to debug using gdb or lldb.

jcoppens Over a year ago

I tried it just before sending the comment. I was having a lot of problems in glib. It didn't halt. I have corrected those errors now, and it's not easy to test again. If I can find a situation where it returns, I'll post the results. I would really be happy if I could get it working - it is a very practical option.

bratsche Over a year ago

Try setting the environment G_DEBUG=fatal_warnings when you run your program instead.

Peter Mortensen · Accepted Answer · 2017-12-10 16:49:04Z

2

I think it does show where it is causing the problem (deeper in the stack trace):

(gdb) bt
#0  0x00da5422 in __kernel_vsyscall ()
#1  0x00c70e15 in pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x008a5800 in g_once_init_enter_impl () from /lib/libglib-2.0.so.0
#3  0x00800e36 in g_initially_unowned_get_type ()
   from /usr/lib/libgobject-2.0.so.0
#4  0x00271f15 in gtk_object_get_type () from /usr/lib/libgtk-x11-2.0.so.0
#5  0x0036aa4c in gtk_widget_get_type () from /usr/lib/libgtk-x11-2.0.so.0
#6  0x001b8485 in gtk_container_get_type () from /usr/lib/libgtk-x11-2.0.so.0
#7  0x0031b3b5 in gtk_toolbar_get_type () from /usr/lib/libgtk-x11-2.0.so.0
#8  0x0031d717 in gtk_toolbar_new () from /usr/lib/libgtk-x11-2.0.so.0

edited Dec 10, 2017 at 16:49

Peter Mortensen

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answered Mar 15, 2010 at 19:55

michael

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