Update from Gnulib by running admin/merge-gnulib

8 files changed, 337 insertions, 179 deletions

diff --git a/m4/copy-file-range.m4 b/m4/copy-file-range.m4
index 4c7ec4eaafa..1b8b9d88589 100644
--- a/m4/copy-file-range.m4
+++ b/m4/copy-file-range.m4
@@ -7,6 +7,7 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_COPY_FILE_RANGE],
 [
   AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
 
   dnl Persuade glibc <unistd.h> to declare copy_file_range.
   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
@@ -21,7 +22,7 @@ AC_DEFUN([gl_FUNC_COPY_FILE_RANGE],
        [AC_LANG_PROGRAM(
           [[#include <unistd.h>
           ]],
-          [[ssize_t (*func) (int, off_t *, int, off_t, size_t, unsigned)
+          [[ssize_t (*func) (int, off_t *, int, off_t *, size_t, unsigned)
               = copy_file_range;
             return func (0, 0, 0, 0, 0, 0) & 127;
           ]])
@@ -32,5 +33,27 @@ AC_DEFUN([gl_FUNC_COPY_FILE_RANGE],
 
   if test "$gl_cv_func_copy_file_range" != yes; then
     HAVE_COPY_FILE_RANGE=0
+  else
+    AC_DEFINE([HAVE_COPY_FILE_RANGE], 1,
+      [Define to 1 if the function copy_file_range exists.])
+
+    case $host_os in
+      linux*)
+        AC_CACHE_CHECK([whether copy_file_range is known to work],
+          [gl_cv_copy_file_range_known_to_work],
+          [AC_COMPILE_IFELSE(
+             [AC_LANG_PROGRAM(
+                [[#include <linux/version.h>
+                ]],
+                [[#if LINUX_VERSION_CODE < KERNEL_VERSION (5, 3, 0)
+                   #error "copy_file_range is buggy"
+                  #endif
+                ]])],
+             [gl_cv_copy_file_range_known_to_work=yes],
+             [gl_cv_copy_file_range_known_to_work=no])])
+        if test "$gl_cv_copy_file_range_known_to_work" = no; then
+          REPLACE_COPY_FILE_RANGE=1
+        fi;;
+    esac
   fi
 ])
diff --git a/m4/extern-inline.m4 b/m4/extern-inline.m4
index 2e914dbc070..8a12bddd571 100644
--- a/m4/extern-inline.m4
+++ b/m4/extern-inline.m4
@@ -7,7 +7,22 @@ dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_EXTERN_INLINE],
 [
-  AH_VERBATIM([extern_inline],
+  AC_CACHE_CHECK([whether ctype.h defines __header_inline],
+    [gl_cv_have___header_inline],
+    [AC_PREPROC_IFELSE(
+       [AC_LANG_SOURCE([[#include <ctype.h>
+                         #ifndef __header_inline
+                          #error "<ctype.h> does not define __header_inline"
+                         #endif
+                        ]])],
+       [gl_cv_have___header_inline=yes],
+       [gl_cv_have___header_inline=no])])
+  if test "$gl_cv_have___header_inline" = yes; then
+    AC_DEFINE([HAVE___HEADER_INLINE], [1],
+      [Define to 1 if ctype.h defines __header_inline.])
+  fi
+
+  AH_VERBATIM([HAVE___HEADER_INLINE_1],
 [/* Please see the Gnulib manual for how to use these macros.
 
    Suppress extern inline with HP-UX cc, as it appears to be broken; see
@@ -54,7 +69,7 @@ AC_DEFUN([gl_EXTERN_INLINE],
  */
 #if (((defined __APPLE__ && defined __MACH__) \
       || defined __DragonFly__ || defined __FreeBSD__) \
-     && (defined __header_inline \
+     && (defined HAVE___HEADER_INLINE \
          ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \
             && ! defined __clang__) \
          : ((! defined _DONT_USE_CTYPE_INLINE_ \
diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4
index 87a9a751b6a..dbc40796148 100644
--- a/m4/gnulib-common.m4
+++ b/m4/gnulib-common.m4
@@ -1,4 +1,4 @@
-# gnulib-common.m4 serial 69
+# gnulib-common.m4 serial 72
 dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -181,7 +181,12 @@ AC_DEFUN([gl_COMMON_BODY], [
 #else
 # define _GL_ATTRIBUTE_DEALLOC(f, i)
 #endif
-#define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (free, 1)
+/* If gnulib's <string.h> or <wchar.h> has already defined this macro, continue
+   to use this earlier definition, since <stdlib.h> may not have been included
+   yet.  */
+#ifndef _GL_ATTRIBUTE_DEALLOC_FREE
+# define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (free, 1)
+#endif
 
 /* _GL_ATTRIBUTE_DEPRECATED: Declares that an entity is deprecated.
    The compiler may warn if the entity is used.  */
@@ -813,6 +818,24 @@ AC_DEFUN([gl_CACHE_VAL_SILENT],
   ])
 ])
 
+# gl_CONDITIONAL(conditional, condition)
+# is like AM_CONDITIONAL(conditional, condition), except that it does not
+# produce an error
+#   configure: error: conditional "..." was never defined.
+#   Usually this means the macro was only invoked conditionally.
+# when only invoked conditionally. Instead, in that case, both the _TRUE
+# and the _FALSE case are disabled.
+AC_DEFUN([gl_CONDITIONAL],
+[
+  pushdef([AC_CONFIG_COMMANDS_PRE], [:])dnl
+  AM_CONDITIONAL([$1], [$2])
+  popdef([AC_CONFIG_COMMANDS_PRE])dnl
+  if test -z "${[$1]_TRUE}" && test -z "${[$1]_FALSE}"; then
+    [$1]_TRUE='#'
+    [$1]_FALSE='#'
+  fi
+])
+
 # gl_CC_ALLOW_WARNINGS
 # sets and substitutes a variable GL_CFLAG_ALLOW_WARNINGS, to a $(CC) option
 # that reverts a preceding '-Werror' option, if available.
@@ -879,6 +902,72 @@ AC_DEFUN([gl_CXX_ALLOW_WARNINGS],
   AC_SUBST([GL_CXXFLAG_ALLOW_WARNINGS])
 ])
 
+# gl_CC_GNULIB_WARNINGS
+# sets and substitutes a variable GL_CFLAG_GNULIB_WARNINGS, to a $(CC) option
+# set that enables or disables warnings as suitable for the Gnulib coding style.
+AC_DEFUN([gl_CC_GNULIB_WARNINGS],
+[
+  AC_REQUIRE([gl_CC_ALLOW_WARNINGS])
+  dnl Assume that the compiler supports -Wno-* options only if it also supports
+  dnl -Wno-error.
+  GL_CFLAG_GNULIB_WARNINGS=''
+  if test -n "$GL_CFLAG_ALLOW_WARNINGS"; then
+    dnl Enable these warning options:
+    dnl
+    dnl                                       GCC             clang
+    dnl -Wno-cast-qual                        >= 3            >= 3.9
+    dnl -Wno-conversion                       >= 3            >= 3.9
+    dnl -Wno-float-conversion                 >= 4.9          >= 3.9
+    dnl -Wno-float-equal                      >= 3            >= 3.9
+    dnl -Wimplicit-fallthrough                >= 7            >= 3.9
+    dnl -Wno-pedantic                         >= 4.8          >= 3.9
+    dnl -Wno-sign-compare                     >= 3            >= 3.9
+    dnl -Wno-sign-conversion                  >= 4.3          >= 3.9
+    dnl -Wno-type-limits                      >= 4.3          >= 3.9
+    dnl -Wno-undef                            >= 3            >= 3.9
+    dnl -Wno-unsuffixed-float-constants       >= 4.5
+    dnl -Wno-unused-function                  >= 3            >= 3.9
+    dnl -Wno-unused-parameter                 >= 3            >= 3.9
+    dnl
+    cat > conftest.c <<\EOF
+      #if __GNUC__ >= 3 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+      -Wno-cast-qual
+      -Wno-conversion
+      -Wno-float-equal
+      -Wno-sign-compare
+      -Wno-undef
+      -Wno-unused-function
+      -Wno-unused-parameter
+      #endif
+      #if __GNUC__ + (__GNUC_MINOR__ >= 9) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+      -Wno-float-conversion
+      #endif
+      #if __GNUC__ >= 7 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+      -Wimplicit-fallthrough
+      #endif
+      #if __GNUC__ + (__GNUC_MINOR__ >= 8) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+      -Wno-pedantic
+      #endif
+      #if __GNUC__ + (__GNUC_MINOR__ >= 3) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+      -Wno-sign-conversion
+      -Wno-type-limits
+      #endif
+      #if __GNUC__ + (__GNUC_MINOR__ >= 5) > 4
+      -Wno-unsuffixed-float-constants
+      #endif
+EOF
+    gl_command="$CC $CFLAGS $CPPFLAGS -E conftest.c > conftest.out"
+    if AC_TRY_EVAL([gl_command]); then
+      gl_options=`grep -v '#' conftest.out`
+      for word in $gl_options; do
+        GL_CFLAG_GNULIB_WARNINGS="$GL_CFLAG_GNULIB_WARNINGS $word"
+      done
+    fi
+    rm -f conftest.c conftest.out
+  fi
+  AC_SUBST([GL_CFLAG_GNULIB_WARNINGS])
+])
+
 dnl gl_CONDITIONAL_HEADER([foo.h])
 dnl takes a shell variable GL_GENERATE_FOO_H (with value true or false) as input
 dnl and produces
@@ -903,7 +992,7 @@ AC_DEFUN([gl_CONDITIONAL_HEADER],
     *) echo "*** gl_generate_var is not set correctly" 1>&2; exit 1 ;;
   esac
   AC_SUBST(gl_header_name)
-  AM_CONDITIONAL(gl_generate_cond, [$gl_generate_var])
+  gl_CONDITIONAL(gl_generate_cond, [$gl_generate_var])
   m4_popdef([gl_generate_cond])
   m4_popdef([gl_generate_var])
   m4_popdef([gl_header_name])
diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4
index c47ea915f14..1d31239d2db 100644
--- a/m4/gnulib-comp.m4
+++ b/m4/gnulib-comp.m4
@@ -3,7 +3,7 @@
 #
 # This file is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3 of the License, or
+# the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This file is distributed in the hope that it will be useful,
@@ -236,9 +236,8 @@ AC_DEFUN([gl_INIT],
   gl_CONDITIONAL_HEADER([byteswap.h])
   AC_PROG_MKDIR_P
   gl_CANONICALIZE_LGPL
-  if test $HAVE_CANONICALIZE_FILE_NAME = 0 || test $REPLACE_CANONICALIZE_FILE_NAME = 1; then
-    AC_LIBOBJ([canonicalize-lgpl])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_CANONICALIZE_LGPL],
+                 [test $HAVE_CANONICALIZE_FILE_NAME = 0 || test $REPLACE_CANONICALIZE_FILE_NAME = 1])
   gl_MODULE_INDICATOR([canonicalize-lgpl])
   gl_STDLIB_MODULE_INDICATOR([canonicalize_file_name])
   gl_STDLIB_MODULE_INDICATOR([realpath])
@@ -247,9 +246,9 @@ AC_DEFUN([gl_INIT],
   gl_CLOCK_TIME
   gl_MODULE_INDICATOR([close-stream])
   gl_FUNC_COPY_FILE_RANGE
-  if test $HAVE_COPY_FILE_RANGE = 0; then
-    AC_LIBOBJ([copy-file-range])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_COPY_FILE_RANGE],
+                 [test $HAVE_COPY_FILE_RANGE = 0 ||
+                  test $REPLACE_COPY_FILE_RANGE = 1])
   gl_UNISTD_MODULE_INDICATOR([copy-file-range])
   AC_REQUIRE([AC_C_RESTRICT])
   gl_MD5
@@ -265,10 +264,10 @@ AC_DEFUN([gl_INIT],
   AC_PROG_MKDIR_P
   gl_DOUBLE_SLASH_ROOT
   gl_FUNC_DUP2
-  if test $REPLACE_DUP2 = 1; then
-    AC_LIBOBJ([dup2])
+  gl_CONDITIONAL([GL_COND_OBJ_DUP2], [test $REPLACE_DUP2 = 1])
+  AM_COND_IF([GL_COND_OBJ_DUP2], [
     gl_PREREQ_DUP2
-  fi
+  ])
   gl_UNISTD_MODULE_INDICATOR([dup2])
   gl_ENVIRON
   gl_UNISTD_MODULE_INDICATOR([environ])
@@ -278,83 +277,77 @@ AC_DEFUN([gl_INIT],
   gl_EXECINFO_H
   gl_CONDITIONAL_HEADER([execinfo.h])
   AC_PROG_MKDIR_P
-  if $GL_GENERATE_EXECINFO_H; then
-    AC_LIBOBJ([execinfo])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_EXECINFO], [$GL_GENERATE_EXECINFO_H])
   gl_FUNC_EXPLICIT_BZERO
-  if test $HAVE_EXPLICIT_BZERO = 0; then
-    AC_LIBOBJ([explicit_bzero])
+  gl_CONDITIONAL([GL_COND_OBJ_EXPLICIT_BZERO], [test $HAVE_EXPLICIT_BZERO = 0])
+  AM_COND_IF([GL_COND_OBJ_EXPLICIT_BZERO], [
     gl_PREREQ_EXPLICIT_BZERO
-  fi
+  ])
   gl_STRING_MODULE_INDICATOR([explicit_bzero])
   AC_REQUIRE([gl_EXTERN_INLINE])
   gl_FUNC_FACCESSAT
-  if test $HAVE_FACCESSAT = 0 || test $REPLACE_FACCESSAT = 1; then
-    AC_LIBOBJ([faccessat])
+  gl_CONDITIONAL([GL_COND_OBJ_FACCESSAT],
+                 [test $HAVE_FACCESSAT = 0 || test $REPLACE_FACCESSAT = 1])
+  AM_COND_IF([GL_COND_OBJ_FACCESSAT], [
     gl_PREREQ_FACCESSAT
-  fi
+  ])
   gl_MODULE_INDICATOR([faccessat])
   gl_UNISTD_MODULE_INDICATOR([faccessat])
   gl_FUNC_FCHMODAT
-  if test $HAVE_FCHMODAT = 0 || test $REPLACE_FCHMODAT = 1; then
-    AC_LIBOBJ([fchmodat])
+  gl_CONDITIONAL([GL_COND_OBJ_FCHMODAT],
+                 [test $HAVE_FCHMODAT = 0 || test $REPLACE_FCHMODAT = 1])
+  AM_COND_IF([GL_COND_OBJ_FCHMODAT], [
     gl_PREREQ_FCHMODAT
-  fi
+  ])
   gl_SYS_STAT_MODULE_INDICATOR([fchmodat])
   gl_FUNC_FCNTL
-  if test $HAVE_FCNTL = 0 || test $REPLACE_FCNTL = 1; then
-    AC_LIBOBJ([fcntl])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_FCNTL],
+                 [test $HAVE_FCNTL = 0 || test $REPLACE_FCNTL = 1])
   gl_FCNTL_MODULE_INDICATOR([fcntl])
   gl_FCNTL_H
   gl_FCNTL_H_REQUIRE_DEFAULTS
   AC_PROG_MKDIR_P
   gl_FUNC_FDOPENDIR
-  if test $HAVE_FDOPENDIR = 0 || test $REPLACE_FDOPENDIR = 1; then
-    AC_LIBOBJ([fdopendir])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_FDOPENDIR],
+                 [test $HAVE_FDOPENDIR = 0 || test $REPLACE_FDOPENDIR = 1])
   gl_DIRENT_MODULE_INDICATOR([fdopendir])
   gl_MODULE_INDICATOR([fdopendir])
   gl_FILE_HAS_ACL
   gl_FILEMODE
   AC_C_FLEXIBLE_ARRAY_MEMBER
   gl_FUNC_FPENDING
-  if test $gl_cv_func___fpending = no; then
-    AC_LIBOBJ([fpending])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_FPENDING], [test $gl_cv_func___fpending = no])
   gl_FUNC_FREE
-  if test $REPLACE_FREE = 1; then
-    AC_LIBOBJ([free])
+  gl_CONDITIONAL([GL_COND_OBJ_FREE], [test $REPLACE_FREE = 1])
+  AM_COND_IF([GL_COND_OBJ_FREE], [
     gl_PREREQ_FREE
-  fi
+  ])
   gl_STDLIB_MODULE_INDICATOR([free-posix])
   gl_FUNC_FSTATAT
-  if test $HAVE_FSTATAT = 0 || test $REPLACE_FSTATAT = 1; then
-    AC_LIBOBJ([fstatat])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_FSTATAT],
+                 [test $HAVE_FSTATAT = 0 || test $REPLACE_FSTATAT = 1])
   gl_SYS_STAT_MODULE_INDICATOR([fstatat])
   gl_FSUSAGE
-  if test $gl_cv_fs_space = yes; then
-    AC_LIBOBJ([fsusage])
+  gl_CONDITIONAL([GL_COND_OBJ_FSUSAGE], [test $gl_cv_fs_space = yes])
+  AM_COND_IF([GL_COND_OBJ_FSUSAGE], [
     gl_PREREQ_FSUSAGE_EXTRA
-  fi
+  ])
   gl_FUNC_FSYNC
-  if test $HAVE_FSYNC = 0; then
-    AC_LIBOBJ([fsync])
+  gl_CONDITIONAL([GL_COND_OBJ_FSYNC], [test $HAVE_FSYNC = 0])
+  AM_COND_IF([GL_COND_OBJ_FSYNC], [
     gl_PREREQ_FSYNC
-  fi
+  ])
   gl_UNISTD_MODULE_INDICATOR([fsync])
   gl_FUNC_FUTIMENS
-  if test $HAVE_FUTIMENS = 0 || test $REPLACE_FUTIMENS = 1; then
-    AC_LIBOBJ([futimens])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_FUTIMENS],
+                 [test $HAVE_FUTIMENS = 0 || test $REPLACE_FUTIMENS = 1])
   gl_SYS_STAT_MODULE_INDICATOR([futimens])
   AC_REQUIRE([AC_CANONICAL_HOST])
   gl_GETLOADAVG
-  if test $HAVE_GETLOADAVG = 0; then
-    AC_LIBOBJ([getloadavg])
+  gl_CONDITIONAL([GL_COND_OBJ_GETLOADAVG], [test $HAVE_GETLOADAVG = 0])
+  AM_COND_IF([GL_COND_OBJ_GETLOADAVG], [
     gl_PREREQ_GETLOADAVG
-  fi
+  ])
   gl_STDLIB_MODULE_INDICATOR([getloadavg])
   gl_FUNC_GETOPT_GNU
   dnl Because of the way gl_FUNC_GETOPT_GNU is implemented (the gl_getopt_required
@@ -364,26 +357,25 @@ AC_DEFUN([gl_INIT],
   gl_CONDITIONAL_HEADER([getopt.h])
   gl_CONDITIONAL_HEADER([getopt-cdefs.h])
   AC_PROG_MKDIR_P
-  if test $REPLACE_GETOPT = 1; then
-    AC_LIBOBJ([getopt])
-    AC_LIBOBJ([getopt1])
+  gl_CONDITIONAL([GL_COND_OBJ_GETOPT], [test $REPLACE_GETOPT = 1])
+  AM_COND_IF([GL_COND_OBJ_GETOPT], [
     dnl Define the substituted variable GNULIB_UNISTD_H_GETOPT to 1.
     gl_UNISTD_H_REQUIRE_DEFAULTS
     gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_GETOPT], [1])
-  fi
+  ])
   gl_UNISTD_MODULE_INDICATOR([getopt-posix])
   AC_REQUIRE([AC_CANONICAL_HOST])
   gl_FUNC_GETRANDOM
-  if test $HAVE_GETRANDOM = 0 || test $REPLACE_GETRANDOM = 1; then
-    AC_LIBOBJ([getrandom])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_GETRANDOM],
+                 [test $HAVE_GETRANDOM = 0 || test $REPLACE_GETRANDOM = 1])
   gl_SYS_RANDOM_MODULE_INDICATOR([getrandom])
   gl_GETTIME
   gl_FUNC_GETTIMEOFDAY
-  if test $HAVE_GETTIMEOFDAY = 0 || test $REPLACE_GETTIMEOFDAY = 1; then
-    AC_LIBOBJ([gettimeofday])
+  gl_CONDITIONAL([GL_COND_OBJ_GETTIMEOFDAY],
+                 [test $HAVE_GETTIMEOFDAY = 0 || test $REPLACE_GETTIMEOFDAY = 1])
+  AM_COND_IF([GL_COND_OBJ_GETTIMEOFDAY], [
     gl_PREREQ_GETTIMEOFDAY
-  fi
+  ])
   gl_SYS_TIME_MODULE_INDICATOR([gettimeofday])
   gl_IEEE754_H
   gl_CONDITIONAL_HEADER([ieee754.h])
@@ -396,17 +388,15 @@ AC_DEFUN([gl_INIT],
   gl_LIBGMP
   gl_CONDITIONAL_HEADER([gmp.h])
   AC_PROG_MKDIR_P
-  if test $HAVE_LIBGMP != yes; then
-    AC_LIBOBJ([mini-gmp-gnulib])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_MINI_GMP_GNULIB], [test $HAVE_LIBGMP != yes])
   gl_LIMITS_H
   gl_CONDITIONAL_HEADER([limits.h])
   AC_PROG_MKDIR_P
   gl_FUNC_LSTAT
-  if test $REPLACE_LSTAT = 1; then
-    AC_LIBOBJ([lstat])
+  gl_CONDITIONAL([GL_COND_OBJ_LSTAT], [test $REPLACE_LSTAT = 1])
+  AM_COND_IF([GL_COND_OBJ_LSTAT], [
     gl_PREREQ_LSTAT
-  fi
+  ])
   gl_SYS_STAT_MODULE_INDICATOR([lstat])
   gl_FUNC_MEMMEM_SIMPLE
   if test $HAVE_MEMMEM = 0 || test $REPLACE_MEMMEM = 1; then
@@ -414,23 +404,23 @@ AC_DEFUN([gl_INIT],
   fi
   gl_STRING_MODULE_INDICATOR([memmem])
   gl_FUNC_MEMPCPY
-  if test $HAVE_MEMPCPY = 0; then
-    AC_LIBOBJ([mempcpy])
+  gl_CONDITIONAL([GL_COND_OBJ_MEMPCPY], [test $HAVE_MEMPCPY = 0])
+  AM_COND_IF([GL_COND_OBJ_MEMPCPY], [
     gl_PREREQ_MEMPCPY
-  fi
+  ])
   gl_STRING_MODULE_INDICATOR([mempcpy])
   gl_FUNC_MEMRCHR
-  if test $ac_cv_func_memrchr = no; then
-    AC_LIBOBJ([memrchr])
+  gl_CONDITIONAL([GL_COND_OBJ_MEMRCHR], [test $ac_cv_func_memrchr = no])
+  AM_COND_IF([GL_COND_OBJ_MEMRCHR], [
     gl_PREREQ_MEMRCHR
-  fi
+  ])
   gl_STRING_MODULE_INDICATOR([memrchr])
   gl_MINMAX
   gl_FUNC_MKOSTEMP
-  if test $HAVE_MKOSTEMP = 0; then
-    AC_LIBOBJ([mkostemp])
+  gl_CONDITIONAL([GL_COND_OBJ_MKOSTEMP], [test $HAVE_MKOSTEMP = 0])
+  AM_COND_IF([GL_COND_OBJ_MKOSTEMP], [
     gl_PREREQ_MKOSTEMP
-  fi
+  ])
   gl_MODULE_INDICATOR([mkostemp])
   gl_STDLIB_MODULE_INDICATOR([mkostemp])
   gl_FUNC_MKTIME
@@ -446,41 +436,39 @@ AC_DEFUN([gl_INIT],
   gl_FUNC_PIPE2
   gl_UNISTD_MODULE_INDICATOR([pipe2])
   gl_FUNC_PSELECT
-  if test $HAVE_PSELECT = 0 || test $REPLACE_PSELECT = 1; then
-    AC_LIBOBJ([pselect])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_PSELECT],
+                 [test $HAVE_PSELECT = 0 || test $REPLACE_PSELECT = 1])
   gl_SYS_SELECT_MODULE_INDICATOR([pselect])
   gl_FUNC_PTHREAD_SIGMASK
-  if test $HAVE_PTHREAD_SIGMASK = 0 || test $REPLACE_PTHREAD_SIGMASK = 1; then
-    AC_LIBOBJ([pthread_sigmask])
+  gl_CONDITIONAL([GL_COND_OBJ_PTHREAD_SIGMASK],
+                 [test $HAVE_PTHREAD_SIGMASK = 0 || test $REPLACE_PTHREAD_SIGMASK = 1])
+  AM_COND_IF([GL_COND_OBJ_PTHREAD_SIGMASK], [
     gl_PREREQ_PTHREAD_SIGMASK
-  fi
+  ])
   gl_SIGNAL_MODULE_INDICATOR([pthread_sigmask])
   gl_FUNC_READLINK
-  if test $HAVE_READLINK = 0 || test $REPLACE_READLINK = 1; then
-    AC_LIBOBJ([readlink])
+  gl_CONDITIONAL([GL_COND_OBJ_READLINK],
+                 [test $HAVE_READLINK = 0 || test $REPLACE_READLINK = 1])
+  AM_COND_IF([GL_COND_OBJ_READLINK], [
     gl_PREREQ_READLINK
-  fi
+  ])
   gl_UNISTD_MODULE_INDICATOR([readlink])
   gl_FUNC_READLINKAT
-  if test $HAVE_READLINKAT = 0 || test $REPLACE_READLINKAT = 1; then
-    AC_LIBOBJ([readlinkat])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_READLINKAT],
+                 [test $HAVE_READLINKAT = 0 || test $REPLACE_READLINKAT = 1])
   gl_UNISTD_MODULE_INDICATOR([readlinkat])
   gl_REGEX
-  if test $ac_use_included_regex = yes; then
-    AC_LIBOBJ([regex])
+  gl_CONDITIONAL([GL_COND_OBJ_REGEX], [test $ac_use_included_regex = yes])
+  AM_COND_IF([GL_COND_OBJ_REGEX], [
     gl_PREREQ_REGEX
-  fi
+  ])
   gl_FUNC_SIG2STR
-  if test $ac_cv_func_sig2str = no; then
-    AC_LIBOBJ([sig2str])
+  gl_CONDITIONAL([GL_COND_OBJ_SIG2STR], [test $ac_cv_func_sig2str = no])
+  AM_COND_IF([GL_COND_OBJ_SIG2STR], [
     gl_PREREQ_SIG2STR
-  fi
+  ])
   gl_FUNC_SIGDESCR_NP
-  if test $HAVE_SIGDESCR_NP = 0; then
-    AC_LIBOBJ([sigdescr_np])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_SIGDESCR_NP], [test $HAVE_SIGDESCR_NP = 0])
   gl_STRING_MODULE_INDICATOR([sigdescr_np])
   gl_SIGNAL_H
   gl_SIGNAL_H_REQUIRE_DEFAULTS
@@ -504,6 +492,8 @@ AC_DEFUN([gl_INIT],
   gl_STDIO_H
   gl_STDIO_H_REQUIRE_DEFAULTS
   AC_PROG_MKDIR_P
+  gl_CONDITIONAL([GL_COND_OBJ_STDIO_READ], [test $REPLACE_STDIO_READ_FUNCS = 1])
+  gl_CONDITIONAL([GL_COND_OBJ_STDIO_WRITE], [test $REPLACE_STDIO_WRITE_FUNCS = 1])
   dnl No need to create extra modules for these functions. Everyone who uses
   dnl <stdio.h> likely needs them.
   gl_STDIO_MODULE_INDICATOR([fscanf])
@@ -531,30 +521,31 @@ AC_DEFUN([gl_INIT],
   gl_STDLIB_H_REQUIRE_DEFAULTS
   AC_PROG_MKDIR_P
   gl_FUNC_STPCPY
-  if test $HAVE_STPCPY = 0; then
-    AC_LIBOBJ([stpcpy])
+  gl_CONDITIONAL([GL_COND_OBJ_STPCPY], [test $HAVE_STPCPY = 0])
+  AM_COND_IF([GL_COND_OBJ_STPCPY], [
     gl_PREREQ_STPCPY
-  fi
+  ])
   gl_STRING_MODULE_INDICATOR([stpcpy])
   gl_STRING_H
   gl_STRING_H_REQUIRE_DEFAULTS
   AC_PROG_MKDIR_P
   gl_FUNC_STRNLEN
-  if test $HAVE_DECL_STRNLEN = 0 || test $REPLACE_STRNLEN = 1; then
-    AC_LIBOBJ([strnlen])
+  gl_CONDITIONAL([GL_COND_OBJ_STRNLEN],
+                 [test $HAVE_DECL_STRNLEN = 0 || test $REPLACE_STRNLEN = 1])
+  AM_COND_IF([GL_COND_OBJ_STRNLEN], [
     gl_PREREQ_STRNLEN
-  fi
+  ])
   gl_STRING_MODULE_INDICATOR([strnlen])
   gl_FUNC_STRTOIMAX
-  if test $HAVE_DECL_STRTOIMAX = 0 || test $REPLACE_STRTOIMAX = 1; then
-    AC_LIBOBJ([strtoimax])
+  gl_CONDITIONAL([GL_COND_OBJ_STRTOIMAX],
+                 [test $HAVE_DECL_STRTOIMAX = 0 || test $REPLACE_STRTOIMAX = 1])
+  AM_COND_IF([GL_COND_OBJ_STRTOIMAX], [
     gl_PREREQ_STRTOIMAX
-  fi
+  ])
   gl_INTTYPES_MODULE_INDICATOR([strtoimax])
   gl_FUNC_SYMLINK
-  if test $HAVE_SYMLINK = 0 || test $REPLACE_SYMLINK = 1; then
-    AC_LIBOBJ([symlink])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_SYMLINK],
+                 [test $HAVE_SYMLINK = 0 || test $REPLACE_SYMLINK = 1])
   gl_UNISTD_MODULE_INDICATOR([symlink])
   gl_SYS_RANDOM_H
   gl_SYS_RANDOM_H_REQUIRE_DEFAULTS
@@ -577,21 +568,21 @@ AC_DEFUN([gl_INIT],
   gl_TIME_H_REQUIRE_DEFAULTS
   AC_PROG_MKDIR_P
   gl_TIME_R
-  if test $HAVE_LOCALTIME_R = 0 || test $REPLACE_LOCALTIME_R = 1; then
-    AC_LIBOBJ([time_r])
+  gl_CONDITIONAL([GL_COND_OBJ_TIME_R],
+                 [test $HAVE_LOCALTIME_R = 0 || test $REPLACE_LOCALTIME_R = 1])
+  AM_COND_IF([GL_COND_OBJ_TIME_R], [
     gl_PREREQ_TIME_R
-  fi
+  ])
   gl_TIME_MODULE_INDICATOR([time_r])
   gl_TIME_RZ
-  if test $HAVE_TIMEZONE_T = 0; then
-    AC_LIBOBJ([time_rz])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_TIME_RZ], [test $HAVE_TIMEZONE_T = 0])
   gl_TIME_MODULE_INDICATOR([time_rz])
   gl_FUNC_TIMEGM
-  if test $HAVE_TIMEGM = 0 || test $REPLACE_TIMEGM = 1; then
-    AC_LIBOBJ([timegm])
+  gl_CONDITIONAL([GL_COND_OBJ_TIMEGM],
+                 [test $HAVE_TIMEGM = 0 || test $REPLACE_TIMEGM = 1])
+  AM_COND_IF([GL_COND_OBJ_TIMEGM], [
     gl_PREREQ_TIMEGM
-  fi
+  ])
   gl_TIME_MODULE_INDICATOR([timegm])
   gl_TIMER_TIME
   gl_TIMESPEC
@@ -610,9 +601,8 @@ AC_DEFUN([gl_INIT],
     [An alias of GNULIB_STDIO_SINGLE_THREAD.])
   gl_FUNC_GLIBC_UNLOCKED_IO
   gl_FUNC_UTIMENSAT
-  if test $HAVE_UTIMENSAT = 0 || test $REPLACE_UTIMENSAT = 1; then
-    AC_LIBOBJ([utimensat])
-  fi
+  gl_CONDITIONAL([GL_COND_OBJ_UTIMENSAT],
+                 [test $HAVE_UTIMENSAT = 0 || test $REPLACE_UTIMENSAT = 1])
   gl_SYS_STAT_MODULE_INDICATOR([utimensat])
   AC_C_VARARRAYS
   gl_gnulib_enabled_260941c0e5dc67ec9e87d1fb321c300b=false
@@ -660,11 +650,11 @@ AC_DEFUN([gl_INIT],
   {
     if ! $gl_gnulib_enabled_dirfd; then
       gl_FUNC_DIRFD
-      if test $ac_cv_func_dirfd = no && test $gl_cv_func_dirfd_macro = no \
-         || test $REPLACE_DIRFD = 1; then
-        AC_LIBOBJ([dirfd])
+      gl_CONDITIONAL([GL_COND_OBJ_DIRFD],
+                     [test $ac_cv_func_dirfd = no && test $gl_cv_func_dirfd_macro = no || test $REPLACE_DIRFD = 1])
+      AM_COND_IF([GL_COND_OBJ_DIRFD], [
         gl_PREREQ_DIRFD
-      fi
+      ])
       gl_DIRENT_MODULE_INDICATOR([dirfd])
       gl_gnulib_enabled_dirfd=true
     fi
@@ -686,10 +676,10 @@ AC_DEFUN([gl_INIT],
   {
     if ! $gl_gnulib_enabled_euidaccess; then
       gl_FUNC_EUIDACCESS
-      if test $HAVE_EUIDACCESS = 0; then
-        AC_LIBOBJ([euidaccess])
+      gl_CONDITIONAL([GL_COND_OBJ_EUIDACCESS], [test $HAVE_EUIDACCESS = 0])
+      AM_COND_IF([GL_COND_OBJ_EUIDACCESS], [
         gl_PREREQ_EUIDACCESS
-      fi
+      ])
       gl_UNISTD_MODULE_INDICATOR([euidaccess])
       gl_gnulib_enabled_euidaccess=true
       if test $HAVE_EUIDACCESS = 0; then
@@ -702,10 +692,11 @@ AC_DEFUN([gl_INIT],
   {
     if ! $gl_gnulib_enabled_getdtablesize; then
       gl_FUNC_GETDTABLESIZE
-      if test $HAVE_GETDTABLESIZE = 0 || test $REPLACE_GETDTABLESIZE = 1; then
-        AC_LIBOBJ([getdtablesize])
+      gl_CONDITIONAL([GL_COND_OBJ_GETDTABLESIZE],
+                     [test $HAVE_GETDTABLESIZE = 0 || test $REPLACE_GETDTABLESIZE = 1])
+      AM_COND_IF([GL_COND_OBJ_GETDTABLESIZE], [
         gl_PREREQ_GETDTABLESIZE
-      fi
+      ])
       gl_UNISTD_MODULE_INDICATOR([getdtablesize])
       gl_gnulib_enabled_getdtablesize=true
     fi
@@ -714,9 +705,8 @@ AC_DEFUN([gl_INIT],
   {
     if ! $gl_gnulib_enabled_getgroups; then
       gl_FUNC_GETGROUPS
-      if test $HAVE_GETGROUPS = 0 || test $REPLACE_GETGROUPS = 1; then
-        AC_LIBOBJ([getgroups])
-      fi
+      gl_CONDITIONAL([GL_COND_OBJ_GETGROUPS],
+                     [test $HAVE_GETGROUPS = 0 || test $REPLACE_GETGROUPS = 1])
       gl_UNISTD_MODULE_INDICATOR([getgroups])
       gl_gnulib_enabled_getgroups=true
       if test $HAVE_GETGROUPS = 0 || test $REPLACE_GETGROUPS = 1; then
@@ -736,10 +726,10 @@ AC_DEFUN([gl_INIT],
   {
     if ! $gl_gnulib_enabled_a9786850e999ae65a836a6041e8e5ed1; then
       gl_FUNC_GROUP_MEMBER
-      if test $HAVE_GROUP_MEMBER = 0; then
-        AC_LIBOBJ([group-member])
+      gl_CONDITIONAL([GL_COND_OBJ_GROUP_MEMBER], [test $HAVE_GROUP_MEMBER = 0])
+      AM_COND_IF([GL_COND_OBJ_GROUP_MEMBER], [
         gl_PREREQ_GROUP_MEMBER
-      fi
+      ])
       gl_UNISTD_MODULE_INDICATOR([group-member])
       gl_gnulib_enabled_a9786850e999ae65a836a6041e8e5ed1=true
       if test $HAVE_GROUP_MEMBER = 0; then
@@ -754,10 +744,10 @@ AC_DEFUN([gl_INIT],
   {
     if ! $gl_gnulib_enabled_lchmod; then
       gl_FUNC_LCHMOD
-      if test $HAVE_LCHMOD = 0; then
-        AC_LIBOBJ([lchmod])
+      gl_CONDITIONAL([GL_COND_OBJ_LCHMOD], [test $HAVE_LCHMOD = 0])
+      AM_COND_IF([GL_COND_OBJ_LCHMOD], [
         gl_PREREQ_LCHMOD
-      fi
+      ])
       gl_SYS_STAT_MODULE_INDICATOR([lchmod])
       gl_gnulib_enabled_lchmod=true
     fi
@@ -806,10 +796,10 @@ AC_DEFUN([gl_INIT],
   {
     if ! $gl_gnulib_enabled_open; then
       gl_FUNC_OPEN
-      if test $REPLACE_OPEN = 1; then
-        AC_LIBOBJ([open])
+      gl_CONDITIONAL([GL_COND_OBJ_OPEN], [test $REPLACE_OPEN = 1])
+      AM_COND_IF([GL_COND_OBJ_OPEN], [
         gl_PREREQ_OPEN
-      fi
+      ])
       gl_FCNTL_MODULE_INDICATOR([open])
       gl_gnulib_enabled_open=true
       if test $REPLACE_OPEN = 1; then
@@ -827,10 +817,10 @@ AC_DEFUN([gl_INIT],
   {
     if ! $gl_gnulib_enabled_rawmemchr; then
       gl_FUNC_RAWMEMCHR
-      if test $HAVE_RAWMEMCHR = 0; then
-        AC_LIBOBJ([rawmemchr])
+      gl_CONDITIONAL([GL_COND_OBJ_RAWMEMCHR], [test $HAVE_RAWMEMCHR = 0])
+      AM_COND_IF([GL_COND_OBJ_RAWMEMCHR], [
         gl_PREREQ_RAWMEMCHR
-      fi
+      ])
       gl_STRING_MODULE_INDICATOR([rawmemchr])
       gl_gnulib_enabled_rawmemchr=true
     fi
@@ -889,10 +879,11 @@ AC_DEFUN([gl_INIT],
   {
     if ! $gl_gnulib_enabled_strtoll; then
       gl_FUNC_STRTOLL
-      if test $HAVE_STRTOLL = 0 || test $REPLACE_STRTOLL = 1; then
-        AC_LIBOBJ([strtoll])
+      gl_CONDITIONAL([GL_COND_OBJ_STRTOLL],
+                     [test $HAVE_STRTOLL = 0 || test $REPLACE_STRTOLL = 1])
+      AM_COND_IF([GL_COND_OBJ_STRTOLL], [
         gl_PREREQ_STRTOLL
-      fi
+      ])
       gl_STDLIB_MODULE_INDICATOR([strtoll])
       gl_gnulib_enabled_strtoll=true
     fi
@@ -1035,16 +1026,28 @@ AC_DEFUN([gl_INIT],
   AC_CONFIG_COMMANDS_PRE([
     gl_libobjs=
     gl_ltlibobjs=
+    gl_libobjdeps=
     if test -n "$gl_LIBOBJS"; then
       # Remove the extension.
+changequote(,)dnl
       sed_drop_objext='s/\.o$//;s/\.obj$//'
+      sed_dirname1='s,//*,/,g'
+      sed_dirname2='s,\(.\)/$,\1,'
+      sed_dirname3='s,^[^/]*$,.,'
+      sed_dirname4='s,\(.\)/[^/]*$,\1,'
+      sed_basename1='s,.*/,,'
+changequote([, ])dnl
       for i in `for i in $gl_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
         gl_libobjs="$gl_libobjs $i.$ac_objext"
         gl_ltlibobjs="$gl_ltlibobjs $i.lo"
+        i_dir=`echo "$i" | sed -e "$sed_dirname1" -e "$sed_dirname2" -e "$sed_dirname3" -e "$sed_dirname4"`
+        i_base=`echo "$i" | sed -e "$sed_basename1"`
+        gl_libobjdeps="$gl_libobjdeps $i_dir/\$(DEPDIR)/$i_base.Po"
       done
     fi
     AC_SUBST([gl_LIBOBJS], [$gl_libobjs])
     AC_SUBST([gl_LTLIBOBJS], [$gl_ltlibobjs])
+    AC_SUBST([gl_LIBOBJDEPS], [$gl_libobjdeps])
   ])
   gltests_libdeps=
   gltests_ltlibdeps=
@@ -1087,17 +1090,30 @@ changequote([, ])dnl
   AC_CONFIG_COMMANDS_PRE([
     gltests_libobjs=
     gltests_ltlibobjs=
+    gltests_libobjdeps=
     if test -n "$gltests_LIBOBJS"; then
       # Remove the extension.
+changequote(,)dnl
       sed_drop_objext='s/\.o$//;s/\.obj$//'
+      sed_dirname1='s,//*,/,g'
+      sed_dirname2='s,\(.\)/$,\1,'
+      sed_dirname3='s,^[^/]*$,.,'
+      sed_dirname4='s,\(.\)/[^/]*$,\1,'
+      sed_basename1='s,.*/,,'
+changequote([, ])dnl
       for i in `for i in $gltests_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
         gltests_libobjs="$gltests_libobjs $i.$ac_objext"
         gltests_ltlibobjs="$gltests_ltlibobjs $i.lo"
+        i_dir=`echo "$i" | sed -e "$sed_dirname1" -e "$sed_dirname2" -e "$sed_dirname3" -e "$sed_dirname4"`
+        i_base=`echo "$i" | sed -e "$sed_basename1"`
+        gltests_libobjdeps="$gltests_libobjdeps $i_dir/\$(DEPDIR)/$i_base.Po"
       done
     fi
     AC_SUBST([gltests_LIBOBJS], [$gltests_libobjs])
     AC_SUBST([gltests_LTLIBOBJS], [$gltests_ltlibobjs])
+    AC_SUBST([gltests_LIBOBJDEPS], [$gltests_libobjdeps])
   ])
+  AC_REQUIRE([gl_CC_GNULIB_WARNINGS])
   LIBGNU_LIBDEPS="$gl_libdeps"
   AC_SUBST([LIBGNU_LIBDEPS])
   LIBGNU_LTLIBDEPS="$gl_ltlibdeps"
@@ -1330,6 +1346,8 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/stddef.in.h
   lib/stdint.in.h
   lib/stdio-impl.h
+  lib/stdio-read.c
+  lib/stdio-write.c
   lib/stdio.in.h
   lib/stdlib.in.h
   lib/stpcpy.c
diff --git a/m4/libgmp.m4 b/m4/libgmp.m4
index a2dee933829..d69dcc7237a 100644
--- a/m4/libgmp.m4
+++ b/m4/libgmp.m4
@@ -1,4 +1,4 @@
-# libgmp.m4 serial 6
+# libgmp.m4 serial 7
 # Configure the GMP library or a replacement.
 dnl Copyright 2020-2022 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
@@ -63,8 +63,8 @@ AC_DEFUN([gl_LIBGMP],
   else
     GL_GENERATE_GMP_H=true
   fi
-  AM_CONDITIONAL([GL_GENERATE_MINI_GMP_H],
+  gl_CONDITIONAL([GL_GENERATE_MINI_GMP_H],
     [test $HAVE_LIBGMP != yes])
-  AM_CONDITIONAL([GL_GENERATE_GMP_GMP_H],
+  gl_CONDITIONAL([GL_GENERATE_GMP_GMP_H],
     [test $HAVE_LIBGMP = yes && test "$ac_cv_header_gmp_h" != yes])
 ])
diff --git a/m4/mktime.m4 b/m4/mktime.m4
index d48f40d187b..431b17dcb0d 100644
--- a/m4/mktime.m4
+++ b/m4/mktime.m4
@@ -1,4 +1,4 @@
-# serial 36
+# serial 37
 dnl Copyright (C) 2002-2003, 2005-2007, 2009-2022 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
@@ -82,7 +82,8 @@ spring_forward_gap ()
      instead of "TZ=America/Vancouver" in order to detect the bug even
      on systems that don't support the Olson extension, or don't have the
      full zoneinfo tables installed.  */
-  putenv ("TZ=PST8PDT,M4.1.0,M10.5.0");
+  if (putenv ("TZ=PST8PDT,M4.1.0,M10.5.0") != 0)
+    return -1;
 
   tm.tm_year = 98;
   tm.tm_mon = 3;
@@ -170,7 +171,8 @@ year_2050_test ()
      instead of "TZ=America/Vancouver" in order to detect the bug even
      on systems that don't support the Olson extension, or don't have the
      full zoneinfo tables installed.  */
-  putenv ("TZ=PST8PDT,M4.1.0,M10.5.0");
+  if (putenv ("TZ=PST8PDT,M4.1.0,M10.5.0") != 0)
+    return -1;
 
   t = mktime (&tm);
 
@@ -181,6 +183,25 @@ year_2050_test ()
           || (0 < t && answer - 120 <= t && t <= answer + 120));
 }
 
+static int
+indiana_test ()
+{
+  if (putenv ("TZ=America/Indiana/Indianapolis") != 0)
+    return -1;
+  struct tm tm;
+  tm.tm_year = 1986 - 1900; tm.tm_mon = 4 - 1; tm.tm_mday = 28;
+  tm.tm_hour = 16; tm.tm_min = 24; tm.tm_sec = 50; tm.tm_isdst = 0;
+  time_t std = mktime (&tm);
+  if (! (std == 515107490 || std == 515107503))
+    return 1;
+
+  /* This platform supports TZDB, either without or with leap seconds.
+     Return true if GNU Bug#48085 is absent.  */
+  tm.tm_isdst = 1;
+  time_t dst = mktime (&tm);
+  return std - dst == 60 * 60;
+}
+
 int
 main ()
 {
@@ -236,7 +257,7 @@ main ()
     result |= 16;
   if (! spring_forward_gap ())
     result |= 32;
-  if (! year_2050_test ())
+  if (! year_2050_test () || ! indiana_test ())
     result |= 64;
   return result;
 }]])],
diff --git a/m4/stdio_h.m4 b/m4/stdio_h.m4
index cc80e77365f..42e96071f8b 100644
--- a/m4/stdio_h.m4
+++ b/m4/stdio_h.m4
@@ -1,4 +1,4 @@
-# stdio_h.m4 serial 57
+# stdio_h.m4 serial 59
 dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -40,41 +40,32 @@ AC_DEFUN_ONCE([gl_STDIO_H],
        attribute "__gnu_printf__" instead of "__printf__"])
   fi
 
-  dnl This ifdef is necessary to avoid an error "missing file lib/stdio-read.c"
-  dnl "expected source file, required through AC_LIBSOURCES, not found". It is
-  dnl also an optimization, to avoid performing a configure check whose result
-  dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING
-  dnl or GNULIB_NONBLOCKING redundant.
+  dnl This ifdef is an optimization, to avoid performing a configure check whose
+  dnl result is not used. But it does not make the test of
+  dnl GNULIB_STDIO_H_NONBLOCKING or GNULIB_NONBLOCKING redundant.
   m4_ifdef([gl_NONBLOCKING_IO], [
     gl_NONBLOCKING_IO
     if test $gl_cv_have_nonblocking != yes; then
       REPLACE_STDIO_READ_FUNCS=1
-      AC_LIBOBJ([stdio-read])
     fi
   ])
 
-  dnl This ifdef is necessary to avoid an error "missing file lib/stdio-write.c"
-  dnl "expected source file, required through AC_LIBSOURCES, not found". It is
-  dnl also an optimization, to avoid performing a configure check whose result
-  dnl is not used. But it does not make the test of GNULIB_STDIO_H_SIGPIPE or
-  dnl GNULIB_SIGPIPE redundant.
+  dnl This ifdef is an optimization, to avoid performing a configure check whose
+  dnl result is not used. But it does not make the test of
+  dnl GNULIB_STDIO_H_SIGPIPE or GNULIB_SIGPIPE redundant.
   m4_ifdef([gl_SIGNAL_SIGPIPE], [
     gl_SIGNAL_SIGPIPE
     if test $gl_cv_header_signal_h_SIGPIPE != yes; then
       REPLACE_STDIO_WRITE_FUNCS=1
-      AC_LIBOBJ([stdio-write])
     fi
   ])
-  dnl This ifdef is necessary to avoid an error "missing file lib/stdio-write.c"
-  dnl "expected source file, required through AC_LIBSOURCES, not found". It is
-  dnl also an optimization, to avoid performing a configure check whose result
-  dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING
-  dnl or GNULIB_NONBLOCKING redundant.
+  dnl This ifdef is an optimization, to avoid performing a configure check whose
+  dnl result is not used. But it does not make the test of
+  dnl GNULIB_STDIO_H_NONBLOCKING or GNULIB_NONBLOCKING redundant.
   m4_ifdef([gl_NONBLOCKING_IO], [
     gl_NONBLOCKING_IO
     if test $gl_cv_have_nonblocking != yes; then
       REPLACE_STDIO_WRITE_FUNCS=1
-      AC_LIBOBJ([stdio-write])
     fi
   ])
 
diff --git a/m4/unistd_h.m4 b/m4/unistd_h.m4
index f93f97a1bda..4c66ccc0a40 100644
--- a/m4/unistd_h.m4
+++ b/m4/unistd_h.m4
@@ -222,6 +222,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   REPLACE_ACCESS=0;                  AC_SUBST([REPLACE_ACCESS])
   REPLACE_CHOWN=0;                   AC_SUBST([REPLACE_CHOWN])
   REPLACE_CLOSE=0;                   AC_SUBST([REPLACE_CLOSE])
+  REPLACE_COPY_FILE_RANGE=0;         AC_SUBST([REPLACE_COPY_FILE_RANGE])
   REPLACE_DUP=0;                     AC_SUBST([REPLACE_DUP])
   REPLACE_DUP2=0;                    AC_SUBST([REPLACE_DUP2])
   REPLACE_EXECL=0;                   AC_SUBST([REPLACE_EXECL])