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gh-144363: Update bundled libexpat to 2.7.4 #144365

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gh-144363: Update bundled libexpat to 2.7.4 #144365

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ee38f32
Update to 2.7.4
StanFromIreland Jan 31, 2026
ff30356
update expat license copyright year to match and a pedantic #define
gpshead Feb 1, 2026
c305ac7
include COPYING update in refresh.sh
gpshead Feb 1, 2026
96278ea
Update checksum for copying
StanFromIreland Feb 1, 2026
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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2026-01-31-17-15-49.gh-issue-144363.X9f0sU.rst
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@@ -0,0 +1 @@
Update bundled `libexpat <https://libexpat.github.io/>`_ to 2.7.4
40 changes: 20 additions & 20 deletions Misc/sbom.spdx.json
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2 changes: 1 addition & 1 deletion Modules/expat/COPYING
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@@ -1,5 +1,5 @@
Copyright (c) 1998-2000 Thai Open Source Software Center Ltd and Clark Cooper
Copyright (c) 2001-2022 Expat maintainers
Copyright (c) 2001-2025 Expat maintainers

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
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4 changes: 2 additions & 2 deletions Modules/expat/expat.h
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Expand Up @@ -11,7 +11,7 @@
Copyright (c) 2000-2005 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
Copyright (c) 2001-2002 Greg Stein <gstein@users.sourceforge.net>
Copyright (c) 2002-2016 Karl Waclawek <karl@waclawek.net>
Copyright (c) 2016-2025 Sebastian Pipping <sebastian@pipping.org>
Copyright (c) 2016-2026 Sebastian Pipping <sebastian@pipping.org>
Copyright (c) 2016 Cristian Rodríguez <crrodriguez@opensuse.org>
Copyright (c) 2016 Thomas Beutlich <tc@tbeu.de>
Copyright (c) 2017 Rhodri James <rhodri@wildebeest.org.uk>
Expand Down Expand Up @@ -1082,7 +1082,7 @@ XML_SetReparseDeferralEnabled(XML_Parser parser, XML_Bool enabled);
*/
# define XML_MAJOR_VERSION 2
# define XML_MINOR_VERSION 7
# define XML_MICRO_VERSION 3
# define XML_MICRO_VERSION 4

# ifdef __cplusplus
}
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2 changes: 1 addition & 1 deletion Modules/expat/expat_config.h
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Expand Up @@ -3,7 +3,7 @@
* distribution.
*/
#ifndef EXPAT_CONFIG_H
#define EXPAT_CONFIG_H
#define EXPAT_CONFIG_H 1

#include <pyconfig.h>
#ifdef WORDS_BIGENDIAN
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5 changes: 2 additions & 3 deletions Modules/expat/expat_external.h
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Expand Up @@ -12,7 +12,7 @@
Copyright (c) 2001-2002 Greg Stein <gstein@users.sourceforge.net>
Copyright (c) 2002-2006 Karl Waclawek <karl@waclawek.net>
Copyright (c) 2016 Cristian Rodríguez <crrodriguez@opensuse.org>
Copyright (c) 2016-2019 Sebastian Pipping <sebastian@pipping.org>
Copyright (c) 2016-2025 Sebastian Pipping <sebastian@pipping.org>
Copyright (c) 2017 Rhodri James <rhodri@wildebeest.org.uk>
Copyright (c) 2018 Yury Gribov <tetra2005@gmail.com>
Licensed under the MIT license:
Expand Down Expand Up @@ -91,8 +91,7 @@
# ifndef XML_BUILDING_EXPAT
/* using Expat from an application */

# if defined(_MSC_EXTENSIONS) && ! defined(__BEOS__) \
&& ! defined(__CYGWIN__)
# if defined(_MSC_VER) && ! defined(__BEOS__) && ! defined(__CYGWIN__)
# define XMLIMPORT __declspec(dllimport)
# endif

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2 changes: 1 addition & 1 deletion Modules/expat/internal.h
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Expand Up @@ -128,7 +128,7 @@
# elif ULONG_MAX == 18446744073709551615u // 2^64-1
# define EXPAT_FMT_PTRDIFF_T(midpart) "%" midpart "ld"
# define EXPAT_FMT_SIZE_T(midpart) "%" midpart "lu"
# elif defined(EMSCRIPTEN) // 32bit mode Emscripten
# elif defined(__wasm32__) // 32bit mode Emscripten or WASI SDK
# define EXPAT_FMT_PTRDIFF_T(midpart) "%" midpart "ld"
# define EXPAT_FMT_SIZE_T(midpart) "%" midpart "zu"
# else
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9 changes: 6 additions & 3 deletions Modules/expat/refresh.sh
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Expand Up @@ -12,9 +12,9 @@ fi

# Update this when updating to a new version after verifying that the changes
# the update brings in are good. These values are used for verifying the SBOM, too.
expected_libexpat_tag="R_2_7_3"
expected_libexpat_version="2.7.3"
expected_libexpat_sha256="821ac9710d2c073eaf13e1b1895a9c9aa66c1157a99635c639fbff65cdbdd732"
expected_libexpat_tag="R_2_7_4"
expected_libexpat_version="2.7.4"
expected_libexpat_sha256="461ecc8aa98ab1a68c2db788175665d1a4db640dc05bf0e289b6ea17122144ec"

expat_dir="$(realpath "$(dirname -- "${BASH_SOURCE[0]}")")"
cd ${expat_dir}
Expand All @@ -24,6 +24,9 @@ curl --location "https://github.com/libexpat/libexpat/releases/download/${expect
echo "${expected_libexpat_sha256} libexpat.tar.gz" | sha256sum --check

# Step 2: Pull files from the libexpat distribution

tar xzvf libexpat.tar.gz "expat-${expected_libexpat_version}/COPYING" --strip-components 2

declare -a lib_files
lib_files=(
ascii.h
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