Delivered-To: lablgtk at yquem.inria.fr
Date: Mon, 26 Nov 2007 14:45:22 -0600
From: Brian de Alwis <bsd at cs.ubc.ca>
To: lablgtk at yquem.inria.fr
Message-ID: <20071126204522.GA8290 at monolith.gateway.2wire.net>
MIME-Version: 1.0
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Subject: [Lablgtk] SIGSEGV with lablgtk for GTK+ 2
Reply-To: bsd at cs.ubc.ca, lablgtk at yquem.inria.fr
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Hello everybody.  I'm not an ocaml or lablgtk user, but rather a
happy user of unison.  I'm not cc'd to this list, so I've redirected
replies to both myself and the list.

I recently did a big recompile including ocaml, lablgtk, and unison.
I use pkgsrc.org.  unison now cores with a SIGSEGV when trying to
use its lablgtk-based UI ('graphics' mode):

    (gdb) where
    #0  0xbb5516b2 in g_type_fundamental () from /usr/pkg/lib/libgobject-2.0.so.0
    #1  0x08172e85 in ml_G_TYPE_FUNDAMENTAL ()
    #2  0x080ce208 in camlGobject__objtype_from_name_256 ()
    #3  0x762cb901 in ?? ()
    #4  0x0818aad4 in camlUigtk2__187 ()
    #5  0x762cb901 in ?? ()
    #6  0x081f8fbc in camlGtkBaseProps__150 ()
    #7  0x081f2640 in camlGobject__114 ()
    #8  0x080ce405 in camlGobject__unsafe_create_290 ()
    [...]

Unison works fine in text mode.

Poking into this problem a bit further, almost all of lablgtk's
example programs crash in the same way *except* for about.ml.  The
crash traces generally look like:

    (gdb) run -I ../src -w s tree.ml
    Starting program: /tmp/obj/x11/lablgtk/work/lablgtk-2.10.0/src/lablgtktop -I ../src -w s tree.ml

    Program received signal SIGSEGV, Segmentation fault.
    0xbb48c6b2 in g_type_fundamental () from /usr/pkg/lib/libgobject-2.0.so.0
    (gdb) bt
    #0  0xbb48c6b2 in g_type_fundamental () from /usr/pkg/lib/libgobject-2.0.so.0
    #1  0x080a8aff in ml_G_TYPE_FUNDAMENTAL (arg1=1967197825) at ml_gobject.c:87
    #2  0x080c9a0f in caml_interprete ()
    #3  0x080baae5 in caml_main ()
    #4  0x080bace1 in main ()

I found one reference to a similar problem on a debian installation,
but there were no solutions.  Does this trigger any ideas for
anybody?

My package versions installed:

    lablgtk-2.10.0 (with default options)
    ocaml-3.10.0
    gtk2+-2.12.1
    glib2-2.14.3

Many thanks.

Brian.

-- 
  Brian de Alwis | Software Practices Lab | UBC | http://www.cs.ubc.ca/~bsd/
      "Amusement to an observing mind is study." - Benjamin Disraeli

----- End forwarded message -----

-- 
  Brian de Alwis | Software Practices Lab | UBC | http://www.cs.ubc.ca/~bsd/
      "Amusement to an observing mind is study." - Benjamin Disraeli

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