bug#21313: 25.0.50; Strange errors from dbus-handle-event

[Eli Zaretskii]

> From: Tassilo Horn <tsdh@gnu.org>
> Cc: 21313@debbugs.gnu.org
> Date: Tue, 15 Sep 2015 17:37:02 +0200
> 
> I wondered why channel is not removed from Available here.  I mean,
> input was available, and then the handlers registered using add_read_fd
> by inotify or dbus consumed the input, so there's probably no input
> left.  So I tried this patch
> 
> --8<---------------cut here---------------start------------->8---
> diff --git a/src/process.c b/src/process.c
> index ed5f4c0..7985e37 100644
> --- a/src/process.c
> +++ b/src/process.c
> @@ -5036,7 +5036,10 @@ wait_reading_process_output (intmax_t time_limit, int 
> nsecs, int read_kbd,
>                  && FD_ISSET (channel, &Available))
>                 || (d->condition & FOR_WRITE
>                     && FD_ISSET (channel, &write_mask))))
> -            d->func (channel, d->data);
> +         {
> +           d->func (channel, d->data);
> +           FD_CLR (channel, &Available);
> +         }
>       }
>  
>        for (channel = 0; channel <= max_process_desc; channel++)
> --8<---------------cut here---------------end--------------->8---
> 
> and since then the problem has not appeared again and I can't see any
> obvious other malfunction.  But of course that's really a naive change.
> I can grasp the big picture of wait_reading_process_output but not all
> the details.

If no one objects in a week, please push this, and let's see what it
breaks.

Thanks.