[cells-gtk-devel] 64bit listbox problem

[jimmy brisson]

On Thu, Aug 11, 2011 at 8:32 PM, Ramarren <ramarren at gmail.com> wrote:

> This probably means that the GType width is wrong for 64 bits, which
> is not entirely unexpected since it is defined like this:
>
> #if     GLIB_SIZEOF_SIZE_T != GLIB_SIZEOF_LONG || !defined __cplusplus
> typedef gsize                           GType;
> #else   /* for historic reasons, C++ links against gulong GTypes */
> typedef gulong                          GType;
> #endif
>
> which means it can be either an uint (at least I hope gsize is
> consistently uint) or an ulong. On 32 bit machine they are the same,
> on 64 bit not. I had assumed that the first branch is the usual and
> defined gtype as gsize/uint. An easy fix would be to change
> (cffi:defctype gtype gsize) to (cffi:defctype gtype gulong). But that
> might break this on some other systems.
>
> Since I am not sure how to detect this without invoking the C
> compiler, I have now added the change as a controllable feature with
> ulong as a default and pushed to the repository. Please test it and
> report if it fixes the memory fault.
>
> Jakub Higersberger
>
> On Thu, Aug 11, 2011 at 9:40 PM, jimmy brisson <theotherjimmy at gmail.com>
> wrote:
> > I have been prodding the memory fault problem on my 64bit machine ans
> have
> > narrowed it down to one function:
> > gtk-list-store-newv
> > when called like (gtk-ffi:gtk-list-store-new '(:string :string)) this
> > function consistently produces unhandled memory fault errors (at
> > #x4000000056 for '(:string :string)) when passed anything that is length
> 2
> > or more or contains strings (the '(:string :string) example is what
> > (test-gtk:gtk-demo) calls).
> > the type signature looks like a match to the header files on my system.
> > for reference I am using sbcl 1.0.50 on Archlinux x86_64 with gtk and
> sbcl
> > compiled 64bit and a fresh (as of an hour ago) pull of cells-gtk3
> > from https://github.com/Ramarren/cells-gtk3.git
> > I am happy to help in any way I can and can provide more information if
> > needed.
> > Thanks for the great library,
> > Jimmy
> > --
> > "Open-source software has fewer bugs because it admits the possibility of
> > bugs." Paul Graham
> >
> > _______________________________________________
> > cells-gtk-devel site list
> > cells-gtk-devel at common-lisp.net
> > http://common-lisp.net/mailman/listinfo/cells-gtk-devel
> >
>

that seems to have fixed the listbox error, but the same error (including
that #x400... value)  appears after "query link :tree-selection-predicate
cells-store nil" .
I will pull it apart now to look for the source.
thanks,
Jimmy


-- 
"The closed-source world cannot win an evolutionary arms race with
open-source communities, who can put orders of magnitude more skilled time
into a problem." --Eric Raymond
"Open-source software has fewer bugs because it admits the possibility of
bugs." Paul Graham
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