From 9333647560d0adfab3c11f2cfbe5b8a77ba968c2 Mon Sep 17 00:00:00 2001
From: fly_fzc <2385803914@qq.com>
Date: Tue, 26 Aug 2025 19:36:31 +0800
Subject: [PATCH] backport upstream patch

(cherry picked from commit 6b6645a510d8143557a903056f40348ae9237163)
---
 autoconf.spec                                 |  6 ++-
 ...e-incorrect-check-in-AC_CHECK_SIZEOF.patch | 53 +++++++++++++++++++
 2 files changed, 58 insertions(+), 1 deletion(-)
 create mode 100644 backport-Remove-incorrect-check-in-AC_CHECK_SIZEOF.patch

diff --git a/autoconf.spec b/autoconf.spec
index c9222c4..7824723 100644
--- a/autoconf.spec
+++ b/autoconf.spec
@@ -3,7 +3,7 @@
 
 Name:           autoconf
 Version:        2.71
-Release:        9
+Release:        10
 Summary:        An extensible package to automatically configure software source code packages
 License:        GPLv2+ and GPLv3+ and GFDL-1.3-only
 URL:            https://www.gnu.org/software/%{name}/
@@ -13,6 +13,7 @@ Source2:        autoconf-el.el
 
 Patch1:         backport-_AC_PROG_CXX_STDCXX_EDITION_TRY-fix-typo-in-variable.patch
 Patch2:         backport-Fix-testsuite-failures-with-bash-5.2.patch
+Patch3:         backport-Remove-incorrect-check-in-AC_CHECK_SIZEOF.patch
 
 Patch9000:      skip-one-test-at-line-1616-of-autotest.patch
 
@@ -73,6 +74,9 @@ fi
 
 
 %changelog
+* Tue Aug 26 2025 fuanan <fuanan3@h-partners.com> - 2.71-10
+- backport upstream patch
+
 * Fri Dec 06 2024 Funda Wang <fundawang@yeah.net> - 2.71-9
 - revert previous fix, as it causes too many regressions
 
diff --git a/backport-Remove-incorrect-check-in-AC_CHECK_SIZEOF.patch b/backport-Remove-incorrect-check-in-AC_CHECK_SIZEOF.patch
new file mode 100644
index 0000000..74f3bba
--- /dev/null
+++ b/backport-Remove-incorrect-check-in-AC_CHECK_SIZEOF.patch
@@ -0,0 +1,53 @@
+From 51dec81849467973b1ef6d3fc8318b5b4f34b1c4 Mon Sep 17 00:00:00 2001
+From: Paul Eggert <eggert@cs.ucla.edu>
+Date: Wed, 7 Feb 2024 12:42:04 -0800
+Subject: [PATCH] Remove incorrect check in AC_CHECK_SIZEOF
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+* lib/autoconf/types.m4 (AC_CHECK_SIZEOF, AC_CHECK_ALIGNOF):
+When the size or alignment cannot be determined, do not fail if
+ac_cv_type_$1 is yes, as there’s no guarantee that ac_cv_type_$1
+is defined, and failure here would contradict the documentation
+that the size or alignment is 0 when sizeof($1)/alignof($1) cannot
+be compiled.  The test for ac_cv_type_$1 made sense long ago when
+it was checked for in these macros, but the test has not made
+sense for many years.
+---
+ lib/autoconf/types.m4 | 12 ++----------
+ 1 file changed, 2 insertions(+), 10 deletions(-)
+
+diff --git a/lib/autoconf/types.m4 b/lib/autoconf/types.m4
+index 8ed2f155..f231fcfc 100644
+--- a/lib/autoconf/types.m4
++++ b/lib/autoconf/types.m4
+@@ -837,11 +837,7 @@ AC_DEFUN([AC_CHECK_SIZEOF],
+ _AC_CACHE_CHECK_INT([size of $1], [AS_TR_SH([ac_cv_sizeof_$1])],
+   [(long int) (sizeof ($1))],
+   [AC_INCLUDES_DEFAULT([$3])],
+-  [if test "$AS_TR_SH([ac_cv_type_$1])" = yes; then
+-     AC_MSG_FAILURE([cannot compute sizeof ($1)], 77)
+-   else
+-     AS_TR_SH([ac_cv_sizeof_$1])=0
+-   fi])
++  [AS_TR_SH([ac_cv_sizeof_$1])=0])
+ 
+ AC_DEFINE_UNQUOTED(AS_TR_CPP(sizeof_$1), $AS_TR_SH([ac_cv_sizeof_$1]),
+ 		   [The size of `$1', as computed by sizeof.])
+@@ -866,11 +862,7 @@ _AC_CACHE_CHECK_INT([alignment of $1], [AS_TR_SH([ac_cv_alignof_$3])],
+   [(long int) offsetof (ac__type_alignof_, y)],
+   [AC_INCLUDES_DEFAULT([$2])
+ typedef struct { char x; $1 y; } ac__type_alignof_;],
+-  [if test "$AS_TR_SH([ac_cv_type_$3])" = yes; then
+-     AC_MSG_FAILURE([cannot compute alignment of $1], 77)
+-   else
+-     AS_TR_SH([ac_cv_alignof_$3])=0
+-   fi])
++  [AS_TR_SH([ac_cv_alignof_$3])=0])
+ 
+ AC_DEFINE_UNQUOTED(AS_TR_CPP(alignof_$3), $AS_TR_SH([ac_cv_alignof_$3]),
+ 		   [The normal alignment of `$1', in bytes.])
+-- 
+2.33.0
+
-- 
Gitee