Re: 23.0.50; Emacs seg fault

[Leo <sdl.web@gmail.com>]

On 2007-09-30 11:49 +0100, Kim F. Storm wrote:
> Leo <sdl.web@gmail.com> writes:
>
>> #1  0x08194676 in wait_reading_process_output (time_limit=30, microsecs=0, read_kbd=-1, do_display=1, wait_for_cell=137551137, 
>>     wait_proc=0x0, just_wait_proc=0) at process.c:4880
>
> I doubt that is the right line number due to compiler optimizations.
> Compile with CFLAGS="-g -O0" to get max debugging info.

I will get an output with better debugging info. However I can't do that
until after 8 Oct.

> Since xerrno = 9 (EBADF), I suspect it actually traps in process.c
> line 4651
>
> This means that one of the bits in the Available mask does not
> correspond to a valid file descriptor.
>
> Looking at the code, I see that this piece of code is executed
> between setting up the Available mask and the call to select.
>
>       /* If frame size has changed or the window is newly mapped,
> 	 redisplay now, before we start to wait.  There is a race
> 	 condition here; if a SIGIO arrives between now and the select
> 	 and indicates that a frame is trashed, the select may block
> 	 displaying a trashed screen.  */
>       if (frame_garbaged && do_display)
> 	{
> 	  clear_waiting_for_input ();
> 	  redisplay_preserve_echo_area (11);
> 	  if (read_kbd < 0)
> 	    set_waiting_for_input (&timeout);
> 	}
>
> This looks dangerous to me.
>
> Could you try this patch and see if it fixes the problem:
[...]

It didn't fix the problem.

-- 
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