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Message-Id: <199908300400.VAA52728@beast.cdrom.com>
Date: Sun, 29 Aug 1999 21:00:58 -0700 (PDT)
From: Tim Vanderhoek <hoek@beast.cdrom.com>
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Subject: bin/13463: /bin/sh: malloc() recursive call: segv
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>Number:         13463
>Category:       bin
>Synopsis:       /bin/sh does not handle interrupts correctly (?)
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Aug 29 21:10:00 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator:     Tim Vanderhoek
>Release:        FreeBSD 4.0-CURRENT alpha
>Organization:
FreeBSD Project
>Environment:

-stable (3.2-S) and -current, although seems easier to reproduce on
-stable.

>Description:

$ while :; do echo -n ; done
^C
$ while :; do echo -n ; done
^C
$ while :; do echo -n ; done
sh in malloc(): warning: recursive call.
sh in malloc(): warning: recursive call.
Segmentation fault (core dumped)

>How-To-Repeat:

As above, enter "while :; do echo -n ; done" repeatedly and 
interrupt it.  When it does die, it dies immediately when the last
while command is entered (ie. not at ^C).

I suspect this is a more generic problem than this instance of it suggests.

Sometimes 20 or more iterations must be completed before it finally
segvs.  Sometimes far fewer...

>Fix:

Hope you get lucky?

>Release-Note:
>Audit-Trail:
>Unformatted:


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