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Date: Mon, 28 Aug 2023 13:47:00 +0200
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Subject: Re: gawk core dumped on too many input values
To: cygwin AT cygwin DOT com
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From: Joshuah Hurst via Cygwin <cygwin AT cygwin DOT com>
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On Mon, Aug 28, 2023 at 1:08 AM Jeremy Hetzler via Cygwin
<cygwin AT cygwin DOT com> wrote:
>
> On Sun, Aug 27, 2023 at 2:25 PM Ed Morton via Cygwin <cygwin AT cygwin DOT com>
> wrote:
> >
> > This (original email below) turned out to be a general cygwin issue, not
> > a gawk issue:
> >
> > $ LC_ALL=C sed 's/x/y/' $(seq 1000000)
> > Segmentation fault (core dumped)
> >
> > $ LC_ALL=C grep 'foo' $(seq 1000000)
> > Segmentation fault (core dumped)
> >
>
> Seems that all commands linked with cygwin1.dll will fault if you pass them
> a long enough arglist.
>
> For me, /bin/true faults on {1..258231} but not {1..258230}.
>
> > $ /bin/true {1..258230}
> >
>
>
> > $ /bin/true {1..258231}
> > Segmentation fault (core dumped)
>
>
> strace, which is not linked with cygwin1.dll, exits cleanly.
>
> > $ /bin/strace {1..300000}
> > -bash: /bin/strace: Argument list too long
>
>
> See this page [1] on maximum argument lengths.
>
> It would be nice to document this limit, whatever it is.

Is this limit?

$ getconf -a | grep -E 'ARG_MAX'
_POSIX_ARG_MAX                      4096
ARG_MAX                             32000

>
> It would also be nice to return an error to the shell on too-long arglist.

+1
-- 
Josh

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