[Gtk2-perl-bugs] [Bug 574306] New: gperl_callback_invoke() reference leak

[gnome-perl (bugzilla.gnome.org) <bug...@bu...>]

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  gnome-perl | Glib | Ver: unspecified
           Summary: gperl_callback_invoke() reference leak
           Product: gnome-perl
           Version: unspecified
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: Glib
        AssignedTo: gtk...@li...
        ReportedBy: us...@zi...
         QAContact: gtk...@li...
     GNOME version: Unspecified
   GNOME milestone: Unspecified


With the current cvs and debian i386 perl 5.10.0, in the additions to GtkHBox.t
below the last test case fails.

The two new tests ask that a label widget is destroyed when weakened, after
it's been added to and removed from the box.  The first test succeeds, but the
second test, where the label has also been subject to a $box->foreach, fails.

Some digging suggests gperl_callback_invoke() is incrementing the C-side
ref_count, ie. g_object_ref(), and never unreffing.  I believe it may be due to
not having g_value_unset(), per change below.

I don't think anywhere in Glib-Perl itself puts objects through GPerlCallback,
to exercise the problem, hence a test case only for gtk.  I noticed it with
GtkTreeModelFilter when calling out to a "modify" function, but
gtk_container_foreach() is a much simpler failing example.


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