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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs-regex@sourceware.org
Subject: [Bug regex/11053] Wrong results with backreferences
Date: Fri, 11 Nov 2022 16:29:02 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D11053

--- Comment #26 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot g=
nu.org> ---
The release/2.34/master branch has been updated by Florian Weimer
<fw@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=3Dglibc.git;h=3D86a701a20479dfbc235=
40b3143fd5b28660a2447

commit 86a701a20479dfbc23540b3143fd5b28660a2447
Author: Paul Eggert <eggert@cs.ucla.edu>
Date:   Tue Sep 21 07:47:45 2021 -0700

    regex: copy back from Gnulib

    Copy regex-related files back from Gnulib, to fix a problem with
    static checking of regex calls noted by Martin Sebor.  This merges the
    following changes:

    * New macro __attribute_nonnull__ in misc/sys/cdefs.h, for use later
    when copying other files back from Gnulib.

    * Use __GNULIB_CDEFS instead of __GLIBC__ when deciding
    whether to include bits/wordsize.h etc.

    * Avoid duplicate entries in epsilon closure table.

    * New regex.h macro _REGEX_NELTS to let regexec say that its pmatch
    arg should contain nmatch elts.  Use that for regexec, instead of
    __attr_access (which is incorrect).

    * New regex.h macro _Attr_access_ which is like __attr_access except
    portable to non-glibc platforms.

    * Add some DEBUG_ASSERTs to pacify gcc -fanalyzer and to catch
    recently-fixed performance bugs if they recur.

    * Add Gnulib-specific stuff to port the dynarray- and lock-using parts
    of regex code to non-glibc platforms.

    * Fix glibc bug 11053.

    * Avoid some undefined behavior when popping an empty fail stack.

    (cherry picked from commit 0b5ca7c3e551e5502f3be3b06453324fe8604e82)

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