Re: Call to gtk_main() crashes

[Fernando Apesteguía <fernando apesteguia gmail com>]

On Wed, Apr 29, 2009 at 8:38 AM, RNG <rgasch gmail com> wrote:
> Hi,
>
> I am trying to get an old application to work using glade2. I've
> managed to get it to compile but the call to
>  gtk_main();
> crashes the application. The backtrace looks like this:
>
> (gdb) bt
> #0  0xb8041422 in __kernel_vsyscall ()
> #1  0xb7244880 in raise () from /lib/tls/i686/cmov/libc.so.6
> #2  0xb7246248 in abort () from /lib/tls/i686/cmov/libc.so.6
> #3  0xb728210d in ?? () from /lib/tls/i686/cmov/libc.so.6
> #4  0xb72883f4 in ?? () from /lib/tls/i686/cmov/libc.so.6
> #5  0xb73f8c26 in g_free () from /usr/lib/libglib-2.0.so.0
> #6  0xb748b3d4 in g_cclosure_marshal_VOID__VOID ()
>   from /usr/lib/libgobject-2.0.so.0
> #7  0xb747dc4b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
> #8  0xb7494095 in ?? () from /usr/lib/libgobject-2.0.so.0
> #9  0xb74957ac in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
> #10 0xb7495c26 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
> #11 0xb781deaa in gtk_button_clicked () from /usr/lib/libgtk-x11-2.0.so.0
> #12 0xb781ef58 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
> #13 0xb748b3d4 in g_cclosure_marshal_VOID__VOID ()
>   from /usr/lib/libgobject-2.0.so.0
> #14 0xb747c3c9 in ?? () from /usr/lib/libgobject-2.0.so.0
> #15 0xb747dc4b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
> #16 0xb74938ee in ?? () from /usr/lib/libgobject-2.0.so.0
> #17 0xb74957ac in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
> #18 0xb7495c26 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
> #19 0xb781df4a in gtk_button_released () from /usr/lib/libgtk-x11-2.0.so.0
> #20 0xb781df83 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
> #21 0xb78d2036 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
> #22 0xb747c3c9 in ?? () from /usr/lib/libgobject-2.0.so.0
> #23 0xb747dc4b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
> #24 0xb7493d3d in ?? () from /usr/lib/libgobject-2.0.so.0
> #25 0xb749562b in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
> #26 0xb7495c26 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
> #27 0xb79e733e in ?? () from /usr/lib/libgtk-x11-2.0.so.0
> #28 0xb78cab4c in gtk_propagate_event () from /usr/lib/libgtk-x11-2.0.so.0
> #29 0xb78cbef7 in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
> #30 0xb776250a in ?? () from /usr/lib/libgdk-x11-2.0.so.0
> #31 0xb73f0718 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
> #32 0xb73f3dc3 in ?? () from /usr/lib/libglib-2.0.so.0
> #33 0xb73f42e2 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
> #34 0xb78cc3a9 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
> #35 0x08056842 in main (argc=Cannot access memory at address 0x12ff
> ) at main.c:278
> (gdb)
>
> Any ides what may be causing this and how to fix it?

Do you call gtk_init() before doing any other gtk related tasks?

If you are using threads, do you call gdk_threads_init() and use
gdk_threads_enter() and gdk_threads_leave()?

Cheers

>
> Greetings/Thanks
> Robert
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