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Date:	Wed, 21 Oct 2015 12:17:32 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: gawk 4.1.3: warning: gensub: third argument
Message-ID:	<20151021101732.GM5319@calimero.vinschen.de>
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On Oct  3 04:59, Westlund, John A wrote:
> I first noticed this issue after an update to gawk 4.1.3. If the third ar=
gument in a call to gensub is bogus a warning is generated where is used to=
 silently pass through:
>=20
> $ echo asdf=C2=A0 | gawk '{print gensub(/a/,"b","")}'
> gawk: cmd. line:1: (FILENAME=3D- FNR=3D1) warning: gensub: third argument=
 `' treated as 1
> bsdf
> $ gawk -V
> GNU Awk 4.1.3, API: 1.1 (GNU MPFR 3.1.3, GNU MP 6.0.0)
> Copyright (C) 1989, 1991-2015 Free Software Foundation.
>=20
> On other gawk versions this is the behavior:
> $ echo asdf | gawk '{print gensub(/a/,"b","")}'
> Bsdf
>=20
> Appears to be resolved by this patch:
> https://www.sourceware.org/ml/libc-alpha/2015-08/msg00269.html

No, that's a patch in glibc to cope with the changed behaviour of gawk
4.1.3.  The upstream change was intentional.


Corinna

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

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