X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; q=dns; s=
	default; b=QN1u2UkkT8JWGV9yO1tk5nepxp6pHEh8YDyEdG2QLcR0ZAUcRj1xC
	O1jEZ1lTqvGauHaEiivKIOS4AVhGIl6demwRyOAqcXGhtnOQvFhCfFvrtcSQI+p1
	Pbr2uPOzLya6KAc1ACPJL2+cfZEp2Gwnuf+Ujd2Ukl4id9/agWdB7o=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; s=default;
	bh=BXgHlBuQANcm54rNDxoPJVKb3gw=; b=JTrpysiSfk0YVYq+qP2rYdJiN19K
	AfYvm/ZbIRy2NVAdduDQtQuzt9mre7gwSK4Kf+VN+lf5XQxWhPB02I23oQ5Vz3qq
	w4jHn7VEECcMLul5bALrdFEgQ/6SkGmECH7yXkJRtsRSJm2zYnP6wXRdPb8/nyo0
	GGWtP7isa2egWo8=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Virus-Found:	No
X-Spam-SWARE-Status:	No, score=-101.6 required=5.0 tests=AWL,BAYES_00,GOOD_FROM_CORINNA_CYGWIN,KAM_LAZY_DOMAIN_SECURITY,RCVD_IN_DNSWL_LOW,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy=H*i:sk:779832c, H*f:sk:779832c, H*MI:sk:779832c, our
X-HELO:	drew.franken.de
Date:	Fri, 13 Jan 2017 10:48:58 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Awk print statement alters the argument variable's content
Message-ID:	<20170113094858.GG23119@calimero.vinschen.de>
Reply-To:	cygwin AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
References:	<2241d4bbc7904b6aaf52d33fa820eab2 AT SESOEX0018 DOT global DOT scd DOT scania DOT com> <779832c0-e4dd-4528-aba2-ead6cae681b2 AT SystematicSw DOT ab DOT ca>
MIME-Version:	1.0
In-Reply-To:	<779832c0-e4dd-4528-aba2-ead6cae681b2@SystematicSw.ab.ca>
User-Agent:	Mutt/1.7.1 (2016-10-04)

--4eRLI4hEmsdu6Npr
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Jan 13 01:31, Brian Inglis wrote:
> On 2017-01-12 05:26, Lundberg Christer wrote:
> > This program run with GNU awk 4.1.4 (currently installed with
> > Cygwin):
> >=20
> >   awk '
> >     BEGIN { OFMT=3D"%.8g"
> >             buf =3D 1+0.1
> >             buf =3D buf "a"
> >             print "Length before print:", length(buf)
> >             print buf " "
> >             print buf
> >             print buf " "
> >             print "Length after print:", length(buf)
> >           }
> >   '
> >=20
> > produces the following output on our system:
> >=20
> > Length before print: 4
> > 1.1a=20
> > 1.1
> > 1.1=20
> > Length after print: 3
> >=20
> > so it appears that the "print buf" statement unexpectedly alters the
> > content of buf.
> > With awk 4.1.3, we got the expected output
> >=20
> > Length before print: 4
> > 1.1a=20
> > 1.1a
> > 1.1a=20
> > Length after print: 4
>=20
> Confirmed problem with any OFMT except default or %.6g, also goes=20
> away if you change awk line 3 to: buf =3D "" buf "a":

It's an upstream bug.  I asked on the gawk ML.


Thanks,
Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

--4eRLI4hEmsdu6Npr
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=nsgR
-----END PGP SIGNATURE-----

--4eRLI4hEmsdu6Npr--

- Raw text -