Re: double free error in gawk

[arnold]

Hi.

Thanks for the report. I don't get a double-free error under Linux
but valgrind does show the problem.

I will work on it.

Arnold

"NIDE, Naoyuki" <nide@ics.nara-wu.ac.jp> wrote:

> Hello,
> gawk causes a double free error with the -M option and a certain program.
>
> $ LC_ALL=C gawk -M 'BEGIN{$0 = "a0 b"; gsub(/0/, "", $1); $2 == "b"; $0 = ""}'
> free(): double free detected in tcache 2
> Aborted (core dumped)
> $ LC_ALL=C gawk --version
> GNU Awk 5.1.0, API: 3.0 (GNU MPFR 3.1.6-p2, GNU MP 6.1.2)
> Copyright (C) 1989, 1991-2020 Free Software Foundation.
>
> This program is free software; you can redistribute it and/or modify
> it under the terms of the GNU General Public License as published by
> the Free Software Foundation; either version 3 of the License, or
> (at your option) any later version.
>
> This program is distributed in the hope that it will be useful,
> but WITHOUT ANY WARRANTY; without even the implied warranty of
> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> GNU General Public License for more details.
>
> You should have received a copy of the GNU General Public License
> along with this program. If not, see http://www.gnu.org/licenses/.
>
> -- 
> NIDE, Naoyuki
> nide@ics.nara-wu.ac.jp