Re: Gtk2::TreeModel get() vs bleeding perl EXTEND()

[Torsten Schönfeld <kaffeetisch gmx de>]

On 08.11.2015 09:34, Kevin Ryde wrote:
> Apparently perl 23.something pre-releases are threatening to make xs
> EXTEND() of negative amounts an error.  I have this from cpantesters of
> some of my code per https://rt.cpan.org/Ticket/Display.html?id=108274
> but I don't have a bleeding perl to actually try.
>
> If I'm right it occurs when gtk_tree_model_get() in xs/GtkTreeModel.xs
> is asked to fetch all columns of a 1-column tree model, resulting in
> EXTEND(-1).  Such an extend is ok, since items==2 in that case and the
> stack is going down to 1 item for the return, but apparently the
> negativity of EXTEND() doesn't notice that.  Perhaps it would be worth
> gtk_tree_model_get() extending only when needed, n_columns > items or
> whatever the case.  The SP+= would still be done of course.

Yes, this seems to be what's going on.  This fixes it for me: 
<https://git.gnome.org/browse/perl-Gtk2/commit/?id=eb29c8b6faf1a1774b943405a021fdad215498ae>.