comint-interrupt-subjob failure

comint-interrupt-subjob failure

[Mabry Tyson]

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In GNU Emacs 21.1.1 (sparc-sun-solaris2.8, X toolkit, Xaw3d scroll bars)
 of 2001-12-02 on solaris
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: C
  locale-coding-system: nil
  default-enable-multibyte-characters: t

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

Under Solaris 5.8, on the console:
Start emacs 21.1 with
  emacs -q -nw
from, say, an xterm window.  Then do
  M-x shell  (my shell is tcsh)
Then do something that takes time to run like
  /usr/sbin/traceroute www.bbc.co.uk
Then type ^C^C  (which is bound to comint-interrupt-subjob)
  
I then see a shell prompt, but the traceroute process is still running
and producing output and shows up in jobs.

I first ran into this with other processes (Allegro Common Lisp
executed from the command line in the shell buffer) that read input.
The earlier processes that I thought I had killed were getting input that
I typed into the shell buffer.



Here are some things that "fix" this:
 1.  Evaluate  (display-time)
or
 2.  emacs -q  (when using Sun's window system)

If either of these is done, then the problem doesn't manifest itself.


I will be unavailable until April 30.  
You may CC  Aaron Heller (Heller@AI.SRI.COM) who helped look into this bug.


  Mabry Tyson
  Tyson@AI.SRI.COM


Recent input:
ESC x r e p o r t - e m a c s - b u g RET

Recent messages:
(emacs -q)
Loading disp-table...done
Loading AIC defaults for Emacs 21...
Loading AIC default for Emacs 21... loaded

For information about the GNU Project and its goals, type C-h C-p.
Loading emacsbug...done

Re: comint-interrupt-subjob failure

[Richard Stallman]

      M-x shell  (my shell is tcsh)
    Then do something that takes time to run like
      /usr/sbin/traceroute www.bbc.co.uk
    Then type ^C^C  (which is bound to comint-interrupt-subjob)

    I then see a shell prompt, but the traceroute process is still running
    and producing output and shows up in jobs.

This would seem to be a shell bug.  It is clear that the signal was
delivered.  Since the shell resumed, it must have receive SIGCLD.