From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#30116: [PATCH] `substitute' crashes when file contains NUL
	characters (core-updates))
Date: Wed, 17 Jan 2018 15:37:54 +0100
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To: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Cc: 30116@debbugs.gnu.org

Maxim Cournoyer <maxim.cournoyer@gmail.com> skribis:

> From 9891e428eae0ed24e0d61862b3f5e298606b79eb Mon Sep 17 00:00:00 2001
> From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
> Date: Sun, 14 Jan 2018 20:31:33 -0500
> Subject: [PATCH] utils: Prevent substitute from crashing on files contain=
ing
>  NUL chars.
>
> Fixes issue #30116.
>
> * guix/build/utils.scm (substitute): Add condition to skip lines containi=
ng
> the NUL character.

[...]

> +           ((string-contains line (make-string 1 #\nul))

Rather (string-index line #\nul).

> +            ;; The regexp functions of the GNU C library (which Guile us=
es)
> +            ;; cannot deal with NUL characters, so skip to the next line.
> +            (format #t "skipping line with NUL characters: ~s\n" line)
> +            (loop (read-line in 'concat)))

Rather (format (current-error-port) =E2=80=A6).

It=E2=80=99s strange semantics, but it=E2=80=99s probably better than crash=
ing in the
contexts where we use it.

Otherwise LGTM.  This would have to go to the next =E2=80=98core-updates=E2=
=80=99 (or
=E2=80=98core-updates-next=E2=80=99 in the meantime.)

Thanks!

Ludo=E2=80=99.