diff -Ppdru autoconf-2.72/tests/semantics.at autoconf-2.72-new/tests/semantics.at
--- autoconf-2.72/tests/semantics.at	2024-02-19 11:10:24.680204892 +0100
+++ autoconf-2.72-new/tests/semantics.at	2024-02-19 18:30:59.290253324 +0100
@@ -901,58 +901,6 @@ AT_CHECK_DEFINES(
 
 AT_CLEANUP
 
-## -------------------------------------------------------------------- ##
-## AC_SYS_LARGEFILE, AC_SYS_YEAR2038, and AC_SYS_YEAR2038_RECOMMENDED.  ##
-## -------------------------------------------------------------------- ##
-
-AT_CHECK_MACRO([AC_SYS_LARGEFILE], [],
-[AT_CHECK([./configure --help |
-    $EGREP -e '-(dis|en)able-(largefile|year2038)\>'],
-  [0],
-[  --disable-largefile     omit support for large files
-  --enable-year2038       support timestamps after 2038
-],
-[])])
-
-AT_CHECK_MACRO([AC_SYS_YEAR2038], [],
-[AT_CHECK([./configure --help |
-    $EGREP -e '-(dis|en)able-(largefile|year2038)\>'],
-  [0],
-[  --disable-largefile     omit support for large files
-  --disable-year2038      don't support timestamps after 2038
-],
-[])])
-
-AT_CHECK_MACRO([AC_SYS_YEAR2038_RECOMMENDED], [],
-[AT_CHECK([./configure --help |
-    $EGREP -e '-(dis|en)able-(largefile|year2038)\>'],
-  [0],
-[  --disable-largefile     omit support for large files
-  --disable-year2038      don't support timestamps after 2038
-],
-[])],
-[], [],
-[dnl Skip this test on systems that do not support 64-bit time_t at
-dnl all.  AC_SYS_YEAR2038_RECOMMENDED will make configure fail on
-dnl those systems.  I'd like to make this be a test that it *does*
-dnl make configure fail on those systems, but that would require
-dnl adding features to AT_CHECK_MACRO.
-AT_DATA([configure.ac],
-[[AC_INIT
-AC_PROG_CC
-AC_SYS_YEAR2038
-AC_COMPUTE_INT([sizeof_time_t], [sizeof(time_t)],
-  [@%:@include <time.h>],
-  [sizeof_time_t=0])
-AS@&t@_IF([test $sizeof_time_t -lt 8],
-  [AC_MSG_FAILURE([could not widen time_t])])
-AC_OUTPUT
-]])
-AT_CHECK_AUTOCONF
-AT_CAPTURE_FILE([config.log])
-AT_CHECK([./configure $configure_options || exit 77], [0], [ignore], [])
-])
-
 ## ------------------------------- ##
 ## Obsolete non-updatable macros.  ##
 ## ------------------------------- ##