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Re: SEGFAULT if bash script make "source" for itself


From: bogun.dmitriy
Subject: Re: SEGFAULT if bash script make "source" for itself
Date: Thu, 4 Sep 2014 23:57:46 -0700

2014-09-03 7:31 GMT-07:00 Chet Ramey <address@hidden>:

> On 8/28/14, 2:02 PM, address@hidden wrote:
> > IMHO any user action should not lead to SIGSEGV! I am not objecting
> against
> > recursive "sourse" itself. But when I got SIGSEGV from "bash", I have no
> > idea why this is happened. I have made recursive "sourse" by mistake and
> > spend a lot of time looking up what exactly lead to SIGSEGV.
> >
> > Put a configurable limit on the deep of recursive source. There is almost
> > no variant for legal usage of recursive source on deep... 10000 for
> > example. If someone need such recursion deep, he alway can raise limit or
> > turn it off by setting it to 0.
>
> This is more or less the way I am leaning.  In the next version of bash, it
> will be possible to set a limit on the number of recursive source/. or eval
> calls at compile time.  This will be accomplished by changing a define in
> config-top.h.  There will be no limit enabled by default.
>
> Why "define"? Why not variable like "FUNCNEST" for functions? Most part of
this mailing list tell me about inadmissibility any limits in gnu soft...
And SIGSEVG in interpreter is only end user problem. An here is limit on
compile time. :)


> Chet
> --
> ``The lyf so short, the craft so long to lerne.'' - Chaucer
>                  ``Ars longa, vita brevis'' - Hippocrates
> Chet Ramey, ITS, CWRU    address@hidden
> http://cnswww.cns.cwru.edu/~chet/
>


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