[Scsh-hackers] [ scsh-Bugs-408125 ] Child pid mysteriously missing proc obje

[nobody <nobody@sourceforge.net>]

Bugs #408125, was updated on 2001-03-12 19:41
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Category: run-time
Group: None
Status: Open
Priority: 5
Submitted By: Brian D. Carlstrom
Assigned to: Mike Sperber
Summary: Child pid mysteriously missing proc obje

Initial Comment:
From: sperber@informatik.uni-tuebingen.de (Michael 
Sperber [Mr. Preprocessor])
To: scsh@martigny.ai.mit.edu
Subject: Child pid mysteriously missing proc object
Date: 25 Apr 1997 12:22:48 +0200


The SUnet server under 0.5.0 on AIX just gave me this:

Error: Child pid mysteriously missing proc object.
       16454

... and died.

Should I worry?
--
Cheers =8-} Mike
Friede, V\366lkerverst\344ndigung und \374berhaupt 
blabla







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Comment By: Brian D. Carlstrom
Date: 2001-03-12 20:07

Message:
Logged In: YES 
user_id=27364

From: Rolf-Thomas Happe <rthappe@mathematik.uni-freiburg.de>
To: scsh-bugs@martigny.ai.mit.edu
Subject: proc object missing
Date: Sun, 17 Aug 1997 23:16:33 +0200 (MDT)


Scsh 0.5        ; under Irix5.3
> (apply +
         (map (lambda (filename)
                (length (run/strings (co -p ,filename))))
              (glob "./RCS/*.c,v")))
;;
;; Now some files are checked out --> stdout (I dismiss the
;; notifications by co). Yet:

Error: Child pid mysteriously missing proc object.
       14098
(Enabling interrupts)


Which is what I want to report. This error doesn't show up
each time I run the above piece of code, nonetheless it is
reproducible.

Epilogue

1> ,debug
'#{Continuation (pc 23) (unnamed in unnamed in add-reaped-
proc!)}

 [0: temp##403] #f
 [1: pid] 14098
 [2: status] 0
inspect: d
'#{Continuation (pc 23) (unnamed in lp in reap-zombies)}

Waiting for (add-reaped-proc! pid status)
  in (begin ^^^ (lp))
 [0: pid] 14098
 [1: status] 0
 [2: lp] '#{Procedure 9203 (lp in reap-zombies)}
inspect: d
'#{Continuation (pc 0) 0}

 [0] 2097151
 [1] 2
 [2] 131
 [3] '#{Template 8358 (unnamed in %%fork-with-retry/errno)}
 [4] '#{Procedure 8358 (unnamed in %%fork-with-retry/errno)}
 [5] 14098
 [6] #f
inspect: d
'#{Continuation (pc 13) %%fork}

 [0] '#{Procedure 8361 (unnamed in %%fork)}
inspect:


rthappe


----------------------------------------------------------------------

Comment By: Brian D. Carlstrom
Date: 2001-03-12 19:45

Message:
Logged In: YES 
user_id=27364

From: Sean Doran <smd@mis.use.net>
To: scsh-news@martigny.ai.mit.edu
Subject: Re: Bug?
Date: 29 Apr 1997 03:11:05 -0700

Tim Bradshaw <tfb@aiai.ed.ac.uk> writes:

>     staffa$ scsh
>     Scsh 0.5
>     > (run (echo foo))
>     foo
>
>     Error: Child pid mysteriously missing proc object.
>          24061
>     (Enabling interrupts)
>     1>

I see this on Sun-OS 4.1.4, for which I made a tiny change
to adjust scsh/bsd/signals1.c to get it to build.

> (run (echo foo))

gives the same results you get

> (run (/bin/echo foo))

on the other hand works normally and

> (run (sh -c "echo foo"))

also behaves properly.  I tried this repeatedly, and got
consistent results.

Dunno why this is yet.  Maybe this will help Olin et al.,
otherwise I'll go looking further after I've had some
sleep.

        Sean.




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