23.0.50; accept-process-output hangs

[Ulrich Neumerkel]

--text follows this line--

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the address@hidden mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

C-x C-e the following two expressions

(progn
  (setq my-process
        (start-process "mine" "mine" "sleep" "1h"))
  (list-processes))

(accept-process-output my-process nil 400)

We create a process mine, that sleeps for an hour.
accept-process-output will hang, whereas it should return after 400
milliseconds.  However, if argument SECONDS is replaced by 0 it will
eval as expected.

In GNU Emacs 23.0.50.21 (i686-pc-linux-gnu, X toolkit)
 of 2008-01-22 on gupu.complang.tuwien.ac.at
Windowing system distributor `The XFree86 Project, Inc', version 11.0.4003
configured using `configure  '--without-toolkit-scroll-bars' '--prefix' 
'/opt/gupu/git''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US
  locale-coding-system: iso-8859-1
  default-enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  shell-dirtrack-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  transient-mark-mode: t

Recent input:
C-x o C-x o <down> <down> C-x o C-a C-x 1 C-x C-s C-e 
<return> C-x C-s C-x b g <tab> u <tab> W <tab> <return> 
C-s a c c e p t - p r o C-s C-s C-s C-s <left> <left> 
<left> <left> <left> <left> <left> <left> <left> <left> 
<left> C-SPC C-e M-w C-x b <return> C-y <backspace> 
<backspace> <backspace> ) C-x C-s <down> C-x C-e <left> 
<down> <up> <down> <up> <left> <left> <left> <left> 
<left> <backspace> <backspace> <backspace> 0 C-e C-x 
C-e <down> C-x C-s <left> <left> <left> <left> <left> 
<left> <backspace> n i l ; <backspace> C-x C-s C-e 
<up> C-x C-e C-x o C-x o <down> <down> C-x C-e C-x 
o C-x b g u <backspace> <backspace> <return> C-x o 
<up> <M-right> <M-right> <M-right> C-h f <return> C-x 
o <down> <down> C-s s e c o n d s C-g C-x b <return> 
<M-left> <left> <backspace> <backspace> <backspace> 
0 C-a C-d <up> C-d <up> C-d <down> <down> <down> C-d 
C-x C-s y e s <return> <menu> C-x o C-x o C-x o C-x 
o <menu> <escape> > <help-echo> C-x o C-k C-k <up> 
<up> <up> C-k C-k C-x C-s y e s <return> C-x o C-x 
b e <tab> 1 9 . e <tab> <return> <up> <up> <up> <M-left> 
<M-left> <M-right> <M-backspace> <M-backspace> m e 
<backspace> y <down> <M-right> <M-right> <M-right> 
<M-backspace> m y <backspace> i n e C-d C-d C-d C-d 
C-d C-d C-d <M-right> <M-right> <M-backspace> <M-backspace> 
m i n e <down> <down> <M-left> <M-left> <M-left> <M-right> 
<M-right> <M-right> <M-right> <M-backspace> <M-backspace> 
<M-backspace> m y - p r o c e s s C-x C-s <up> <up> 
C-e C-x C-e <down> C-x C-e <down> C-e C-x C-e C-g <down> 
<up> <up> <down> <down> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <menu-bar> 
<help-menu> <send-emacs-bug-report>

Recent messages:
(No files need saving)
Mark set [3 times]
Saving file /home/ulrich/gupu/96/gupu-96/gupuWS96.el...
Wrote /home/ulrich/gupu/96/gupu-96/gupuWS96.el
Making completion list...
Wrote /home/ulrich/lftp/emacs/e19.el
#<process mine>
nil
Quit [2 times]
previous-buffer: Cannot switch buffers in minibuffer window