py26-gobject: Segmentation Fault triggered by accessing any gobject property via the x.props.{propertyname}

[michael+trac-macports@…]

I have an issue with py26-gtk giving a segmentation fault.

I already filed a bug report here as it is "meld" that I'm trying to get working: ​https://bugzilla.gnome.org/show_bug.cgi?id=633257

As mentioned here: ​https://bugzilla.gnome.org/show_bug.cgi?id=633257#c3 ... Running the following in python will generate a segmentation fault:

>>> import gtk
>>> a = gtk.Window()
>>> a.show()
>>> a.props.title="Foo"
>>> print a.props.title

[michael+trac-macports@…]

Cc Me!

[michael+trac-macports@…]

Here is some more information I forgot to add:

$ uname -a
Darwin sinner.local 10.4.0 Darwin Kernel Version 10.4.0: Fri Apr 23 18:28:53 PDT 2010; root:xnu-1504.7.4~1/RELEASE_I386 i386

$ ls -la `which python`
lrwxr-xr-x  1 root  admin  24 Oct 22 23:59 /opt/local/bin/python -> /opt/local/bin/python2.5

$ port info python25
python25 @2.5.5, Revision 1 (lang)
Variants:             universal

$ port info py25-gtk
py25-gtk @2.22.0 (python, x11)
Variants:             universal

$ port info py25-gobject
py25-gobject @2.26.0 (python, gnome)
Variants:             universal

[michael+trac-macports@…]

Cc Me!

[bonoba@…]

patch to avoid segfaults when accessing props.*

[bonoba@…]

Looks like gentoo guys have already fixed this bug: ​https://bugzilla.gnome.org/show_bug.cgi?id=634206

See the attachment (pygobject-pygi_h.patch).

I applied it and now meld 1.4 works fine. Cheers.

[bonoba@…]

Cc Me!

[michael+trac-macports@…]

Replying to bonoba@…:

Looks like gentoo guys have already fixed this bug: ​https://bugzilla.gnome.org/show_bug.cgi?id=634206

See the attachment (pygobject-pygi_h.patch).

I applied it and now meld 1.4 works fine. Cheers.

OK, thanks already for your input, but how and when do you patch the file (and where)?
I know how to use patch -p0 < patchfile

I assume you need to use

sudo port fetch py26-gobject
sudo port extract py26-gobject

first and then apply the patch to the pygi.h file?
Is that correct? Where will the file be located? When that is patched, I can just remove and install meld?

[bonoba@…]

Yes, Michael, you can do it that way too, but I did it a bit differently by using the macports workflow like this:

• cd /opt/local/var/macports/sources/rsync.macports.org/release/ports/python/py26-gobject

• mkdir files

• cp /Users/michael/Downloads/pygobject-pygi_h.patch files/patch-segfault

• vim Portfile

# add the following somewhere, say after checksums:

patch.pre_args -p1 patchfiles patch-segfault

• port -v upgrade --force -n py26-gobject

# watch for the lines saying "Applying the patch from /opt/local/...../patch-segfault" # .... Hunk #1 succeded (offset 3) <- that's okay

good luck.

[bonoba@…]

Replying to bonoba@…:

• vim Portfile

# add the following somewhere, say after checksums:

patch.pre_args  -p1
patchfiles      patch-segfault

[michael+trac-macports@…]

Replying to bonoba@…:

Replying to bonoba@…:

• vim Portfile

# add the following somewhere, say after checksums:

patch.pre_args  -p1
patchfiles      patch-segfault

Thank you very much.

Worked like a charm. :)

I haven't seen a way to mark this ticket as solved, but I unchecked the "leave as new" Action below.
I don't know if that is enough.
Anyway, the issue is fixed as far as I'm concerned.

[rmstonecipher@…]

I can confirm that this patch also fixes #27200.
I have recreated the patch using MacPorts' standard 'diff -u' method and will commit the change with Marcus' permission.

[rmstonecipher@…]

Patch recreated to be used with standard 'patchfiles' port argument

[rmstonecipher@…]

Fix committed in r73412.

[macports@…]

I just updated MacPorts and py26-gobject (to 2.26.0_1). I still get a Segmentation Fault when I launch meld.

[eddieh (Eddie Hillenbrand)]

Replying to macports@…:

I just updated MacPorts and py26-gobject (to 2.26.0_1). I still get a Segmentation Fault when I launch meld.

I was getting this segmentation fault after recently running 'port selfupdate' and then 'port upgrade outdated.' The current version of the meld portfile specifies python25. Since meld was working before I upgraded my ports I tried activating the older ports that were still installed as follows:

sudo port -f activate py25-gobject @2.18.0_0 sudo port -f activate py25-gnome @2.26.1_1 sudo port -f activate py25-gtk @2.16.0_0

After that meld launched and works fine. No segfaults.

[jmroot (Joshua Root)]

Closing as per comment:14.