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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/1890] strerror() unnecessarily non thread-safe
Date: Thu, 15 Jun 2023 09:48:14 +0000
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X-Bugzilla-Type: changed
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X-Bugzilla-Product: glibc
X-Bugzilla-Component: libc
X-Bugzilla-Version: 2.3.6
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X-Bugzilla-Who: fweimer at redhat dot com
X-Bugzilla-Status: RESOLVED
X-Bugzilla-Resolution: FIXED
X-Bugzilla-Priority: P2
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X-Bugzilla-Target-Milestone: 2.32
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D1890

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |2.32
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED
           Assignee|fweimer at redhat dot com          |unassigned at sourc=
eware dot org

--- Comment #8 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for 2.32 via:

commit 28aff047818eb1726394296d27b9c7885340bead
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Thu May 14 17:44:15 2020 -0300

    string: Implement strerror in terms of strerror_l

    If the thread is terminated then __libc_thread_freeres will free the
    storage via __glibc_tls_internal_free.

    It is only within the calling thread that this matters.  It makes
    strerror MT-safe.

    Checked on x86-64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu,
    and s390x-linux-gnu.

    Tested-by: Carlos O'Donell <carlos@redhat.com>
    Reviewed-by: Carlos O'Donell <carlos@redhat.com>

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