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From:   Florian Weimer <fweimer@redhat.com>
To:     Shani Leviim <sleviim@redhat.com>
Cc:     alx@kernel.org, linux-man@vger.kernel.org,
        automotive-devel@redhat.com, "Carlos O'Donell" <carlos@redhat.com>,
        Sergei Gromeniuk <sgromeni@redhat.com>,
        Gobinda Das <godas@redhat.com>
Subject: Re: [patch] strerror.3: Change strerror() reference from MT-Unsafe
 to MT-Safe
References: <CAMO6KYomqkRFVnE1gfNa=htbZ5oBrVAm+AsFVqc6+vqZ0YxnAw@mail.gmail.com>
Date:   Thu, 13 Jul 2023 10:12:00 +0200
In-Reply-To: <CAMO6KYomqkRFVnE1gfNa=htbZ5oBrVAm+AsFVqc6+vqZ0YxnAw@mail.gmail.com>
        (Shani Leviim's message of "Wed, 12 Jul 2023 21:46:37 +0300")
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* Shani Leviim:

> @@ -169,6 +172,16 @@ is too small and
>  is unknown).
>  The string always includes a terminating null byte (\(aq\e0\(aq).
>  .\"
> +.PP
> +The automatically generated buffer for
> +.BR strerror ()
> +and
> +.BR strerror_l ()
> +is sufficient to avoid an
> +.B ERANGE
> +error when calling
> +.BR strerror_r ().
> +.PP

I think this gives the wrong impression that the pointer returned by
strerror/strerror_l can be used with strerror_r.  This is not the case
because the application does not own that buffer, or know its length.

Thanks,
Florian