Re: gio-channel

[Chris Vine]

It does appear to be a wrapper error as the following longhand
equivalent version does work correctly for attaching file descriptors
to a glib main loop, so there is a work-around at least:

  (define* (my-io-add-watch ioc cond func #:optional context)
    (let ([s (g-io-create-watch ioc cond)]
          [closure (make <gclosure>
                     #:return-type <gboolean>
                     #:func func)])
      (g-source-set-closure s closure)
      (g-source-attach s context)))

I have posted a bug at the gnome bugzilla but looking at the history
before posting I see that bugs posted there for guile-gnome-platform
do seem to linger longer.  Is there another bug reporting system I
should pay attention to?

Chris

------------------------------------------
On Fri, 25 Apr 2014 10:55:49 +0100
Chris Vine <address@hidden> wrote:
> Hi,
> 
> The code snippet below fails to compile with guile-2.0.11, using the
> current master branches of guile-gnome-2 and g-wrap:
> 
>   #! /usr/bin/guile-gnome-2 -s
>   !#
> 
>   (use-modules (gnome gobject)
>                (gnome glib)
>                (oop goops))
> 
>   (let* ([p (pipe)]
>          [fd (fileno (car p))])
>     (let ([ioc (g-io-channel-unix-new fd)])
>       (g-io-add-watch ioc
>                       '(in hup)
>                       (lambda (a b)
>                         '()))))
> 
> Attempting to run it gives:
> 
>   Backtrace:
>   In ice-9/boot-9.scm:
>    157: 7 [catch #t #<catch-closure 81f2c60> ...]
>   In unknown file:
>      ?: 6 [apply-smob/1 #<catch-closure 81f2c60>]
>   In ice-9/boot-9.scm:
>     63: 5 [call-with-prompt prompt0 ...]
>   In ice-9/eval.scm:
>    432: 4 [eval # #]
>   In ice-9/boot-9.scm:
>   2401: 3 [save-module-excursion #<procedure 8201ce0 at
> ice-9/boot-9.scm:4045:3 ()>] 4052: 2 [#<procedure 8201ce0 at
> ice-9/boot-9.scm:4045:3 ()>] In unknown file:
>      ?: 1 [load-compiled/vm
> "/home/chris/.cache/guile/ccache/2.0-LE-4-2.0/home/chris/src/io-channel.scm.go"]
>  ?:
> 0 [apply-smob/1 # # # ...]
> 
>   ERROR: In procedure apply-smob/1:
>   ERROR: In procedure module-lookup: Unbound variable: <gio-channel>
> 
> The backtrace from loading it at the repl appears to show that the new
> gio-channel object is constructed properly, but g-io-add-watch fails.
> Is this user error at my end or a bug in the wrapper?  If the latter
> I'll file a bug.
> 
> Chris