Don't use 'typeof' built-in with -std=c99 or -std=c11.

Reported by Alexander Sosedkin <asosedkin@redhat.com> in
<https://lists.gnu.org/archive/html/bug-gnulib/2026-03/msg00019.html>.

* lib/stdcountof.in.h (_gl_verify_is_array): Don't use the definition
with typeof in strict C99 or C11 modes.
* lib/string-desc.h (HAVE_TYPEOF): Don't define in strict C99 or C11
modes.

manywarnings: Eliminate some never-useful clang warnings.

* m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC(C)): Disable the
-Wgnu-include-next, -Wstring-plus-int, -Wstring-plus-char warnings.

Use countof, part 2.

Done through  sed -e 's/SIZEOF \([(][^()]*[)]\)/countof \1/g'

* lib/boot-time.c: Include <stdcountof.h>.
* lib/readutmp.c: Include <stdcountof.h>.
* lib/boot-time-aux.h (get_linux_boot_time_fallback,
get_openbsd_boot_time, get_windows_boot_time): Use countof.
* lib/duplocale.c: Include <stdcountof.h>.
(SIZEOF): Remove macro.
(duplocale): Use countof instead.
* lib/fatal-signal.c: Include <stdcountof.h>.
(SIZEOF): Remove macro.
(num_fatal_signals, actions_allocated): Use countof instead.
* lib/iconv_open.c: Include <stdcountof.h>.
(SIZEOF): Remove macro.
(rpl_iconv_open): Use countof instead.
* lib/term-style-control.c: Include <stdcountof.h>.
(SIZEOF): Remove macro.
(num_job_control_signals): Use countof instead.
* lib/uniconv/u16-conv-to-enc.c: Include <stdcountof.h>.
(SIZEOF): Remove macro.
* lib/uniconv/u32-conv-to-enc.c: Include <stdcountof.h>.
(SIZEOF): Remove macro.
* lib/uniconv/u-conv-to-enc.h (FUNC): Use countof instead.
* lib/uniconv/u16-strconv-to-enc.c: Include <stdcountof.h>.
(SIZEOF): Remove macro.
* lib/uniconv/u32-strconv-to-enc.c: Include <stdcountof.h>.
(SIZEOF): Remove macro.
* lib/uniconv/u-strconv-to-enc.h (FUNC): Use countof instead.
* lib/uniname/uniname.c: Include <stdcountof.h>.
(SIZEOF): Remove macro.
(unicode_name_word, unicode_name_word_lookup, unicode_code_to_index,
unicode_index_to_code, unicode_character_name, unicode_name_character):
Use countof instead.
* lib/uniwidth/width.c: Include <stdcountof.h>.
(SIZEOF): Remove macro.
(uc_width): Use countof instead.
* lib/wait-process.c: Include <stdcountof.h>.
(SIZEOF): Remove macro.
(slaves_allocated): Use countof instead.
* lib/gen-uni-tables.c (countof): Renamed from SIZEOF.
* modules/boot-time (Depends-on): Add stdcountof-h.
* modules/readutmp (Depends-on): Likewise.
* modules/duplocale (Depends-on): Likewise.
* modules/fatal-signal (Depends-on): Likewise.
* modules/iconv_open (Depends-on): Likewise.
* modules/term-style-control (Depends-on): Likewise.
* modules/uniconv/u16-conv-to-enc (Depends-on): Likewise.
* modules/uniconv/u32-conv-to-enc (Depends-on): Likewise.
* modules/uniconv/u16-strconv-to-enc (Depends-on): Likewise.
* modules/uniconv/u32-strconv-to-enc (Depends-on): Likewise.
* modules/uniname/uniname (Depends-on): Likewise.
* modules/uniwidth/width (Depends-on): Likewise.
* modules/wait-process (Depends-on): Likewise.
* tests/macros.h (SIZEOF): Remove macro.
* tests/**/*.[hc]: Use countof instead of SIZEOF. Include <stdcountof.h>
as needed.
* modules/**/*-tests (Depends-on): Add stdcountof-h if needed.

Use countof, part 1.

* lib/argmatch.h: Include <stdcountof.h>.
(ARRAY_CARDINALITY): Remove macro.
(ARGMATCH_VERIFY): Use countof instead.
* tests/test-argv-iter.c: Include <stdcountof.h>.
(ARRAY_CARDINALITY): Remove macro.
(main): Use countof instead.
* tests/test-hash.c: Include <stdcountof.h>.
(ARRAY_CARDINALITY): Remove macro.
(main): Use countof instead.
* tests/test-userspec.c: Include <stdcountof.h>.
(ARRAY_CARDINALITY): Remove macro.
(main): Use countof instead.
* modules/argmatch (Depends-on): Add stdcountof-h.
* modules/argv-iter-tests (Depends-on): Likewise.
* modules/hash-tests (Depends-on): Likewise.
* modules/userspec-tests (Depends-on): Likewise.

stdcountof-h: Improve comment.

* lib/stdcountof.in.h (countof): Improve comment.

Silence clang's -Wstring-plus-int warnings in Gnulib code.

* m4/gnulib-common.m4 (gl_CC_GNULIB_WARNINGS): Add -Wno-string-plus-int.

tests: Use streq, part 5.

* tests/test-execute-child.c: Revert last change.
* modules/execute-tests (Depends-on): Remove streq.

stdcountof-h tests: Avoid a clang warning.

* tests/test-stdcountof-h.c (call_count, do_call): Don't define in C++
mode.

float-h: Ensure ISO C23 compliance with clang 22.

* m4/float_h.m4 (gl_FLOAT_H): Test also whether the provided <float.h>
defines {FLT,DBL,LDBL}_IS_IEC_60559.

strftime: pacify clang -Wstring-plus-int

This pacifies a warning from default clang 21, and saves a byte.
Problem reported by Badli Al Rashid <https://bugs.gnu.org/80514>.
* lib/strftime.c (c_ampm_letters): New static constant, if
!defined _NL_CURRENT && (HAVE_ONLY_C_LOCALE || (USE_C_LOCALE &&
!HAVE_STRFTIME_L)).
(ampm): Use it if needed.

tests: Use strnul.

* tests/test-dfa-match-aux.c (main): Use strnul.
* tests/test-pthread-rwlock-waitqueue.c (reader_func, writer_func):
Likewise.
* tests/test-strtold.h (test_function): Likewise.
* tests/test-xstrtold.c (main): Likewise.
* modules/dfa-tests (Depends-on): Add strnul.
* modules/pthread-rwlock-extra-tests (Depends-on): Likewise.
* modules/c-strtold-tests (Depends-on): Likewise.
* modules/strtold-tests (Depends-on): Likewise.
* modules/xstrtold-tests (Depends-on): Likewise.

Fix last few ChangeLog entries.

tests: Use memeq, part 3.

* tests/**/*.[hc]: Use memeq instead of memcmp.
* modules/*-tests (Dependencies): Add memeq.

tests: Use memeq, part 2.

Done through
  sed -e 's/memcmp \([(][^()]*[)]\) != 0/!memeq \1/g' \
      -e 's/memcmp \([(][^()]*[(][^()]*[)][^()]*[)]\) != 0/!memeq \1/g'

* tests/**/*.[hc]: Use !memeq instead of memcmp ... != 0.
* modules/*-tests (Dependencies): Add memeq.

tests: Use memeq, part 1.

Done through
  sed -e 's/memcmp \([(][^()]*[)]\) == 0/memeq \1/g' \
      -e 's/memcmp \([(][^()]*[(][^()]*[)][^()]*[)]\) == 0/memeq \1/g'

* tests/**/*.[hc]: Use memeq instead of memcmp ... == 0.
* modules/*-tests (Dependencies): Add memeq.

tests: Use streq, part 4.

* tests/**/*.[hc]: Use streq instead of STREQ.
* tests/macros.h (STREQ): Remove macro.
* modules/*-tests (Dependencies): Add streq.

tests: Use streq, part 3.

* tests/**/*.[hc]: Use streq instead of strcmp.
* modules/*-tests (Dependencies): Add streq.

tests: Use streq, part 2.

Done through sed -e 's/strcmp \([(][^()]*[)]\) != 0/!streq \1/'

* tests/**/*.[hc]: Use !streq instead of strcmp ... != 0.
* modules/*-tests (Dependencies): Add streq.

tests: Use streq, part 1.

Done through sed -e 's/strcmp \([(][^()]*[)]\) == 0/streq \1/'

* tests/**/*.[hc]: Use streq instead of strcmp ... == 0.
* modules/*-tests (Dependencies): Add streq.

filesystem-remote: New module.

* lib/filesystem-remote.h: New file, based on lib/file-remote.h.
* lib/filesystem-remote.c: New file, based on lib/file-remote.c.
* lib/file-remote.h (is_remote_fs_type_name): Remove declaration.
* lib/file-remote.c (is_remote_fs_type_name): Remove function.
* modules/filesystem-remote: New file.
* lib/mountlist.c: Include filesystem-remote.h instead of file-remote.h.
* modules/mountlist (Depends-on): Add filesystem-remote. Remove
file-remote.

cygpath: Use _GL_ATTRIBUTE_MALLOC and _GL_ATTRIBUTE_DEALLOC_FREE.

* lib/cygpath.h: Include stdlib.h for free declaration.
(cygpath_w): Mark function with _GL_ATTRIBUTE_MALLOC and
_GL_ATTRIBUTE_DEALLOC_FREE since it will always return a malloc'ed
pointer or NULL.

file-remote: Use streq.

* lib/file-remote.c (is_remote_fs_type_name, file_is_remote): Use streq
instead of strcmp.
* modules/file-remote (Depends-on): Add streq.

Straighten dependencies to streq or memeq.

* modules/argmatch (Dependencies): Add memeq, streq. Remove stringeq.
* modules/bcp47 (Dependencies): Likewise.
* modules/readutmp (Dependencies): Likewise.
* modules/relocatable-prog (Dependencies): Likewise.
* modules/relocatable-prog-wrapper (Dependencies): Likewise.
* modules/vc-mtime (Dependencies): Likewise.
* modules/backup-rename (Dependencies): Add memeq. Remove stringeq.
* modules/backupfile (Dependencies): Likewise.
* modules/boot-time (Dependencies): Likewise.
* modules/csharpcomp (Dependencies): Likewise.
* modules/csharpexec (Dependencies): Likewise.
* modules/file-has-acl (Dependencies): Likewise.
* modules/get_ppid_of (Dependencies): Likewise.
* modules/get_progname_of (Dependencies): Likewise.
* modules/getlogin_r (Dependencies): Likewise.
* modules/getprogname (Dependencies): Likewise.
* modules/getumask (Dependencies): Likewise.
* modules/isnan-no-c++ (Dependencies): Likewise.
* modules/isnanf (Dependencies): Likewise.
* modules/isnanf-nolibm (Dependencies): Likewise.
* modules/isnand (Dependencies): Likewise.
* modules/isnand-nolibm (Dependencies): Likewise.
* modules/isnanl (Dependencies): Likewise.
* modules/isnanl-nolibm (Dependencies): Likewise.
* modules/mbchar (Dependencies): Likewise.
* modules/mem-hash-map (Dependencies): Likewise.
* modules/memcoll (Dependencies): Likewise.
* modules/progname (Dependencies): Likewise.
* modules/pthread_sigmask (Dependencies): Likewise.
* modules/quotearg (Dependencies): Likewise.
* modules/same (Dependencies): Likewise.
* modules/signbit-no-c++ (Dependencies): Likewise.
* modules/string-desc (Dependencies): Likewise.
* modules/uniname/uniname (Dependencies): Likewise.
* modules/acl-permissions (Dependencies): Add streq. Remove stringeq.
* modules/argp (Dependencies): Likewise.
* modules/c-vasnprintf (Dependencies): Likewise.
* modules/c32_get_mapping (Dependencies): Likewise.
* modules/c32_get_type_test (Dependencies): Likewise.
* modules/concat-filename (Dependencies): Likewise.
* modules/cpu-supports (Dependencies): Likewise.
* modules/dfa (Dependencies): Likewise.
* modules/duplocale (Dependencies): Likewise.
* modules/exclude (Dependencies): Likewise.
* modules/findprog (Dependencies): Likewise.
* modules/findprog-in (Dependencies): Likewise.
* modules/findprog-lgpl (Dependencies): Likewise.
* modules/fopen (Dependencies): Likewise.
* modules/fopen-gnu (Dependencies): Likewise.
* modules/freopen (Dependencies): Likewise.
* modules/fts (Dependencies): Likewise.
* modules/getlocalename_l-simple (Dependencies): Likewise.
* modules/getlocalename_l-unsafe (Dependencies): Likewise.
* modules/getlogin (Dependencies): Likewise.
* modules/getugroups (Dependencies): Likewise.
* modules/hard-locale (Dependencies): Likewise.
* modules/hashcode-named-file (Dependencies): Likewise.
* modules/hashkey-string (Dependencies): Likewise.
* modules/iconv_open (Dependencies): Likewise.
* modules/idcache (Dependencies): Likewise.
* modules/localcharset (Dependencies): Likewise.
* modules/localename (Dependencies): Likewise.
* modules/localename-environ (Dependencies): Likewise.
* modules/localename-unsafe (Dependencies): Likewise.
* modules/localename-unsafe-limited (Dependencies): Likewise.
* modules/map-c++-tests (Dependencies): Likewise.
* modules/mbs_endswith (Dependencies): Likewise.
* modules/mountlist (Dependencies): Likewise.
* modules/newlocale (Dependencies): Likewise.
* modules/nl_langinfo (Dependencies): Likewise.
* modules/nproc (Dependencies): Likewise.
* modules/open (Dependencies): Likewise.
* modules/parse-datetime (Dependencies): Likewise.
* modules/popen (Dependencies): Likewise.
* modules/posix_spawn-internal (Dependencies): Likewise.
* modules/propername (Dependencies): Likewise.
* modules/pt_chown (Dependencies): Likewise.
* modules/putenv-gnu (Dependencies): Likewise.
* modules/qcopy-acl (Dependencies): Likewise.
* modules/rpmatch (Dependencies): Likewise.
* modules/selinux-h (Dependencies): Likewise.
* modules/setlocale (Dependencies): Likewise.
* modules/setlocale-fixes (Dependencies): Likewise.
* modules/sig2str (Dependencies): Likewise.
* modules/spawn-pipe (Dependencies): Likewise.
* modules/stat (Dependencies): Likewise.
* modules/str_endswith (Dependencies): Likewise.
* modules/streq-opt (Dependencies): Likewise.
* modules/striconveha (Dependencies): Likewise.
* modules/supersede (Dependencies): Likewise.
* modules/time_rz (Dependencies): Likewise.
* modules/unicodeio (Dependencies): Likewise.
* modules/unistdio/u16-u16-vasnprintf (Dependencies): Likewise.
* modules/unistdio/u16-vasnprintf (Dependencies): Likewise.
* modules/unistdio/u32-u32-vasnprintf (Dependencies): Likewise.
* modules/unistdio/u32-vasnprintf (Dependencies): Likewise.
* modules/unistdio/u8-u8-vasnprintf (Dependencies): Likewise.
* modules/unistdio/u8-vasnprintf (Dependencies): Likewise.
* modules/unistdio/ulc-vasnprintf (Dependencies): Likewise.
* modules/vasnprintf (Dependencies): Likewise.
* modules/vasnwprintf (Dependencies): Likewise.
* modules/wctrans (Dependencies): Likewise.
* modules/wctype (Dependencies): Likewise.
* modules/c-nstrftime (Dependencies): Add streq.
* modules/fprintftime (Dependencies): Likewise.
* modules/nstrftime (Dependencies): Likewise.
* modules/nstrftime-limited (Dependencies): Likewise.

streq, memeq: New modules.

* lib/string.in.h (_GL_STRING_INLINE): Remove macro.
(_GL_MEMEQ_INLINE): New macro.
(memeq): Use it instead of _GL_STRING_INLINE. Test GNULIB_MEMEQ.
(_GL_STREQ_INLINE): New macro.
(streq): Use it instead of _GL_STRING_INLINE. Test GNULIB_STREQ.
* lib/memeq.c: New file.
* lib/streq.c: New file.
* lib/string.c: Remove file.
* m4/memeq.m4: New file, based on m4/stringeq.m4.
* m4/streq.m4: New file, based on m4/stringeq.m4.
* m4/stringeq.m4: Remove file.
* m4/string_h.m4 (gl_STRING_H_REQUIRE_DEFAULTS): Initialize
GNULIB_MEMEQ, GNULIB_STREQ. Don't initialize GNULIB_STRINGEQ.
* modules/string-h (Makefile.am): Substitute GNULIB_MEMEQ, GNULIB_STREQ.
Don't substitute GNULIB_STRINGEQ.
* modules/memeq: New file.
* modules/streq: New file.
* modules/stringeq: Change to just be the union of streq and memeq.
* MODULES.html.sh (func_all_modules): Add memeq, streq.

Fix module dependencies after 2025-09-17 "stringeq: prefer streq to strcmp in other modules".

* modules/c-vasnprintf (Dependencies): Add stringeq.
* modules/findprog-lgpl (Dependendies): Likewise.
* modules/localename-environ (Dependendies): Likewise.
* modules/localename-unsafe-limited (Dependendies): Likewise.
* modules/uchar-h-c23 (Dependendies): Likewise.
* modules/unistdio/u16-u16-vasnprintf (Dependendies): Likewise.
* modules/unistdio/u16-vasnprintf (Dependendies): Likewise.
* modules/unistdio/u32-u32-vasnprintf (Dependendies): Likewise.
* modules/unistdio/u32-vasnprintf (Dependendies): Likewise.
* modules/unistdio/u8-u8-vasnprintf (Dependendies): Likewise.
* modules/unistdio/u8-vasnprintf (Dependendies): Likewise.
* modules/unistdio/ulc-vasnprintf (Dependendies): Likewise.
* modules/vasnprintf (Dependendies): Likewise.
* modules/vasnwprintf (Dependendies): Likewise.
* modules/setenv (Dependendies): Remove stringeq.
* modules/uchar-h (Dependendies): Likewise.
* modules/uniconv/base (Dependendies): Likewise.

Fix module dependencies after 2025-09-17 "stringeq: prefer memeq to memcmp in other modules".

* modules/backup-rename (Dependencies): Add stringeq.
* modules/isnanf (Dependendies): Likewise.
* modules/isnanf-nolibm (Dependendies): Likewise.
* modules/isnand (Dependendies): Likewise.
* modules/isnand-nolibm (Dependendies): Likewise.
* modules/isnanl (Dependendies): Likewise.
* modules/isnanl-nolibm (Dependendies): Likewise.

mountlist: use file-remote module to determine remoteness

* lib/file-remote.c (is_remote_fs_type_name): A new function
that matches file system _names_ as being remote.  The list is
an amalgamation of those names already referenced in file-remote,
names referenced in ME_REMOTE, and IDs referenced in file-remote.
* lib/file-remote.h: Declare new function.
* lib/mountlist.c (ME_REMOTE): Use is_remote_fs_type_name()
to determine if the name is remote.
* modules/mountlist: Depend on file-remote.

strnul: Fix link-time error.

* lib/string.in.h (_GL_STRNUL_INLINE): New macro.
(gl_strnul): Use it instead of _GL_STRING_INLINE.
* lib/strnul.c: New file.
* lib/string.c: Update comment.
* modules/strnul (Files): Add strnul.c. Remove string.c.
(Makefile.am): Update accordingly.

wctype-h: Try to fix error regarding mbstate_t on very old mingw.

Reported by Eli Zaretskii, see
<https://lists.gnu.org/archive/html/bug-gnulib/2026-01/msg00206.html>.
Based on proposed patch at
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00043.html>.

* lib/wctype.in.h: Don't include <wchar.h> on mingw when it has already
been at least partially processed.

mbs_startswith: Add tests.

* tests/test-mbs_startswith1.c: New file, based on
tests/test-mbs_endswith1.c.
* tests/test-mbs_startswith2.c: New file, based on
tests/test-mbs_endswith2.c.
* tests/test-mbs_startswith2.sh: New file, based on
tests/test-mbs_endswith2.sh.
* tests/test-mbs_startswith3.c: New file, based on
tests/test-mbs_endswith3.c.
* tests/test-mbs_startswith3.sh: New file, based on
tests/test-mbs_endswith3.sh.
* modules/mbs_startswith-tests: New file.

mbs_startswith: Fix handling of incomplete characters.

* lib/string.in.h (mbs_startswith): Remove macro definition.
* lib/mbs_startswith.c: New file.
* modules/mbs_startswith (Files): Add it.
(Depends-on): Add strnlen, mbiter.
(Makefile.am): Arrange to compile mbs_startswith.c.

assert: document variadic variant

crypto/sha3: Silence -Wzero-as-null-pointer-constant warning.

* lib/sha3.c (sha3_read_ctx): Use NULL for the pointer argument.

Use strnul in a few places.

* lib/argz.c (argz_next): Use strnul.
* lib/cpu-supports.c (hwcap_allowed): Likewise.
* lib/file-has-acl.c (aclinfo_has_xattr): Likewise.
* lib/inet_ntop.c (inet_ntop6): Likewise.
* lib/link.c (link): Likewise.
* lib/localename-unsafe.c (enum_locales_fn): Likewise.
* lib/mbspcasecmp.c (mbspcasecmp): Likewise.
* lib/opendir.c (opendir): Likewise.
* lib/parse-duration.c (parse_year_month_day, parse_hour_minute_second,
trim): Likewise.
* lib/setlocale.c (setlocale_unixlike): Likewise.
* lib/strftime.c (__strftime_internal): Likewise.
* lib/striconv.c (str_cd_iconv): Likewise.
* lib/strncat.c (strncat): Likewise.
* lib/term-style-control.c (log_signal_handler_called,
tcsetattr_failed): Likewise.
* lib/time_rz.c (save_abbr): Likewise.
* lib/vc-mtime.c (git_mtime, max_vc_mtime): Likewise.
* tests/test-savedir.c (test_savedir_sort_none, test_savedir_sort_name):
Likewise.
* modules/argz (Depends-on): Add strnul.
* modules/cpu-supports (Depends-on): Likewise.
* modules/file-has-acl (Depends-on): Likewise.
* modules/inet_ntop (Depends-on): Likewise.
* modules/link (Depends-on): Likewise.
* modules/localename-unsafe (Depends-on): Likewise.
* modules/localename-unsafe-limited (Depends-on): Likewise.
* modules/mbspcasecmp (Depends-on): Likewise.
* modules/opendir (Depends-on): Likewise.
* modules/parse-duration (Depends-on): Likewise.
* modules/setlocale (Depends-on): Likewise.
* modules/nstrftime (Depends-on): Likewise.
* modules/nstrftime-limited (Depends-on): Likewise.
* modules/c-nstrftime (Depends-on): Likewise.
* modules/fprintftime (Depends-on): Likewise.
* modules/striconv (Depends-on): Likewise.
* modules/strncat (Depends-on): Likewise.
* modules/term-style-control (Depends-on): Likewise.
* modules/time_rz (Depends-on): Likewise.
* modules/vc-mtime (Depends-on): Likewise.
* modules/savedir-tests (Depends-on): Likewise.

Copyright-paperwork-exempt: Yes

strnul: Respect GNULIB_NAMESPACE.

* lib/string.in.h (strnul): Use _GL_BEGIN_NAMESPACE, _GL_END_NAMESPACE.
* tests/test-strnul-c++2.cc: New file, based on tests/test-strnul.c.
* modules/strnul-c++-tests (Files): Add it.
(Makefile.am): Arrange to compile and run test-strnul-c++2.

strnul: Accept 'void *' and 'const void *' arguments in C mode.

Reported by Paul Eggert in
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00170.html>.

* lib/string.in.h (strnul): Use a conditional expression in _Generic.
* tests/test-strnul.c (main): Add test cases with 'void *' argument.

fts: Relicense some of its source code under LGPLv2+.

Jim Meyering's permission is at
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00109.html>.
Paul Eggert's permission is at
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00106.html>.
Bruno Haible's permission is at
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00111.html>.
Pádraig Brady's permission is at
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00113.html>.
Kamil Dudka's permission is at
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00199.html>.

* lib/fts.in.h: Change license notice to LGPLv2+.
* lib/fts.c: Likewise.
* lib/fts-cycle.c: Likewise.

Fix comment misspelling of "against"

crypto: don’t add 72 to malloc size

The ‘BLOCKSIZE + 72’ business apparently dates back to 30 years
ago when the buffer was local (not heap allocated) and was multi-use.
That code died long ago, so stop allocating the cargo-cult bytes.
* lib/md2-stream.c (md2_stream):
* lib/md4-stream.c (md4_stream):
* lib/md5-stream.c (md5_stream):
* lib/sha1-stream.c (sha1_stream):
* lib/sha256-stream.c (shaxxx_stream):
* lib/sha3-stream.c (sha3_xxx_stream):
* lib/sha512-stream.c (shaxxx_stream):
* lib/sm3-stream.c (sm3_stream):
Don’t allocate an unnecessary 72 extra bytes.

sha3: add a few ‘restrict’s that I forgot

* lib/sha3-stream.c (sha3_xxx_stream):
* lib/sha3.c (sha3_##SIZE##_buffer):
Add some more ‘restrict’s.

crypto: add ‘restrict’ to .h files

Use ‘restrict’ on pointer args when appropriate.
It suffices to do this in .h files, as .c files inherit it.
For style, prefer qualifiers after types, to be consistent with
putting ‘restrict’ after types.
* lib/af_alg.h (afalg_buffer, afalg_stream):
* lib/arcfour.h (arcfour_stream, arcfour_setkey):
* lib/arctwo.h (arctwo_setkey_ekb, arctwo_encrypt, arctwo_decrypt):
* lib/des.h (gl_des_setkey, gl_des_makekey, gl_des_ecb_crypt)
(gl_3des_set2keys, gl_3des_set3keys, gl_3des_makekey)
(gl_3des_ecb_crypt):
* lib/gc.h (gc_cipher_setkey, gc_cipher_setiv)
(gc_cipher_encrypt_inline, gc_cipher_decrypt_inline, gc_hash_clone)
(gc_hash_hmac_setkey, gc_hash_write, gc_hash_buffer, gc_md2)
(gc_md4, gc_md5, gc_sha1, gc_sha256, gc_sha512, gc_sm3)
(gc_hmac_md5, gc_hmac_sha1, gc_hmac_sha256, gc_hmac_sha512)
(gc_pbkdf2_hmac, gc_pbkdf2_sha1):
* lib/gl_openssl.h (GL_CRYPTO_FN (_process_bytes))
(GL_CRYPTO_FN (_process_block), GL_CRYPTO_FN (_finish_ctx))
(GL_CRYPTO_FN (_buffer), GL_CRYPTO_FN (_read_ctx)):
* lib/hmac.h (hmac_md5, hmac_sha1, hmac_sha256, hmac_sha512):
* lib/md2.h (md2_process_block, md2_process_bytes, md2_finish_ctx)
(md2_read_ctx, md2_buffer, md2_stream):
* lib/md4.h (md4_process_block, md4_process_bytes, md4_finish_ctx)
(md4_read_ctx, md4_buffer, md4_stream):
* lib/md5.h (__md5_process_block, __md5_process_bytes, __md5_finish_ctx)
(__md5_read_ctx, __md5_buffer, __md5_stream):
* lib/rijndael-alg-fst.h (rijndaelKeySetupEnc)
(rijndaelKeySetupDec, rijndaelEncrypt, rijndaelDecrypt):
* lib/rijndael-api-fst.h (rijndaelMakeKey, rijndaelCipherInit)
(rijndaelBlockEncrypt, rijndaelPadEncrypt, rijndaelBlockDecrypt)
(rijndaelPadDecrypt):
* lib/sha1.h (sha1_process_block, sha1_process_bytes)
(sha1_finish_ctx, sha1_read_ctx, sha1_buffer, sha1_stream):
* lib/sha256.h (sha256_process_block, sha256_process_bytes)
(sha256_finish_ctx, sha224_finish_ctx, sha256_read_ctx)
(sha224_read_ctx, sha256_buffer, sha224_buffer, sha256_stream)
(sha224_stream):
* lib/sha3.h (sha3_process_block, sha3_process_bytes)
(sha3_finish_ctx, sha3_read_ctx, sha3_224_buffer, sha3_256_buffer)
(sha3_384_buffer, sha3_512_buffer, sha3_224_stream)
(sha3_256_stream, sha3_384_stream, sha3_512_stream):
* lib/sha512.h (sha512_process_block, sha512_process_bytes)
(sha512_finish_ctx, sha384_finish_ctx, sha512_read_ctx)
(sha384_read_ctx, sha512_buffer, sha384_buffer, sha512_stream)
(sha384_stream):
* lib/sm3.h (sm3_process_block, sm3_process_bytes, sm3_finish_ctx)
(sm3_read_ctx, sm3_buffer, sm3_stream):
Add ‘restrict’ to pointer args.  All implementations changed.

crypto/sha3: Don’t leak if init fails and no free

If the init_ctx functions fail, it’s natural for callers to
immediately fail too.  Change the init_ctx functions to not leak
when failing.  This doesn’t invalidate any callers that free
if the init functions fail, as that free now becomes a no-op.
* lib/sha3.c (sha3_##SIZE##_init_ctx): Before failing,
free any storage that was allocated before failure was discovered.
* tests/test-sha3-224-buffer.c:
* tests/test-sha3-256-buffer.c:
* tests/test-sha3-384-buffer.c:
* tests/test-sha3-512-buffer.c:
(check, main): Test more cases of multiple frees.
Also, fix a memory leak.

crypto/sha3: fix sha3_read_ctx reset bug

* lib/sha3.c (sha3_read_ctx): When using OpenSSL, don’t update the
internal context; we’re supposed to read it, not write it.
Instead, clone it and update the clone.
* tests/test-sha3-224-buffer.c:
* tests/test-sha3-256-buffer.c:
* tests/test-sha3-384-buffer.c:
* tests/test-sha3-512-buffer.c:
(check): Test for the bug.

crypto/sha3: EVP_MD_CTX_create → EVP_MD_CTX_new

* lib/sha3.c (sha3_##SIZE##_init_ctx): Avoid deprecated macro name.

crypto/sha3: fix errno when freeing

* lib/sha3.c (sha3_free_ctx): Preserve errno.
* modules/crypto/sha3 (Depends-on):
* modules/crypto/sha3-buffer (Depends-on):
Depend on free-posix.

crypto/sha3: fix memory leak with OpenSSL wrapper

* lib/sha3.c (sha3_##SIZE##_buffer):
Free ctx before returning.

* lib/sha3.c (sha3_process_bytes): Simplify, and replace * with -.

crypto/sha3: simplify full-block processing

* lib/sha3.c (sha3_process_bytes): Simplify.

crypto/sha3: fix partial-buffer bug

* lib/sha3.c (sha3_process_bytes):
Update ctx->buflen to 0 if all bytes were processed.
* tests/test-sha3-224-buffer.c:
* tests/test-sha3-256-buffer.c:
* tests/test-sha3-384-buffer.c:
* tests/test-sha3-512-buffer.c:
(mismatch): New function.
(check): Check for the bug.

strnul-bench-tests: New module.

* tests/bench-strnul.c: New file.
* modules/strnul-bench-tests: New file.

cdefs: omit ungrammatical (and unnecessary) #error

* lib/cdefs.h: Remove an ungrammatical #error diagnostic
that is not needed any more, now that people no longer
try to use glibc or Gnulib with K&R C compilers.

cdefs: merge from glibc

Also, minimize whitespace differences from glibc,
to simplify comparison.
* lib/cdefs.h: Do not issue header warning if C++.
(__COLD, __attribute_overloadable__, __REDIRECT_FORTIFY)
(__REDIRECT_FORTIFY_NTH, __glibc_const_generic)
(__attribute_struct_may_alias__): New macros.
Several other new macros are defined if !__GNULIB_CDEFS.
(__glibc_safe_or_unknown_len): Check that __osz is a constant.
(__REDIRECT_LDBL): Optimize error redirects for ieeelongdouble.
(__fortified_attr_access): Drop access attribute for _FORTIFY_SOURCE=3.

strnul: Add tests.

* tests/test-strnul.c: New file.
* tests/test-strnul-c++.cc: New file.
* modules/strnul-tests: New file.
* modules/strnul-c++-tests: New file.

strnul: New module.

Suggested by Alejandro Colomar <alx@kernel.org> in
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00121.html>.

* lib/string.in.h (gl_strnul): New function.
(strnul): New macro or template.
* lib/string.c: Update comment.
* m4/string_h.m4 (gl_STRING_H_REQUIRE_DEFAULTS): Initialize
GNULIB_STRNUL.
* modules/string-h (Makefile.am): Substitute GNULIB_STRNUL.
* modules/strnul: New file.

streq: Rename to streq-opt.

* lib/streq-opt.h: Renamed from lib/streq.h.
* modules/streq-opt: Renamed from modules/streq.
* NEWS: Mention the change.
* lib/c32is-impl.h: Include streq-opt.h instead of streq.h.
* lib/c32to-impl.h: Likewise.
* lib/c32rtomb.c: Likewise.
* lib/c32width.c: Likewise.
* lib/lc-charset-dispatch.c: Likewise.
* lib/lc-charset-unicode.c: Likewise.
* lib/mbrtoc32.c: Likewise.
* lib/uniwidth/cjk.h: Likewise.
* lib/wcwidth.c: Likewise.
* modules/c32is* (Depends-on): Add streq-opt. Remove streq.
* modules/c32to* (Depends-on): Likewise.
* modules/c32rtomb (Depends-on): Likewise.
* modules/mbrtoc32 (Depends-on): Likewise.
* modules/mbrtowc (Depends-on): Likewise.
* modules/uchar-h-c23 (Depends-on): Likewise.
* modules/unilbrk/u*-possible-linebreaks (Depends-on): Likewise.
* modules/uniwidth/width (Depends-on): Likewise.
* modules/wcwidth (Depends-on): Likewise.
* MODULES.html.sh: Update.

csharpcomp: Use str_endswith.

Suggested by Paul Eggert in
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00129.html>.

* lib/csharpcomp.c (compile_csharp_using_mono,
compile_csharp_using_dotnet, compile_csharp_using_sscli,
compile_csharp_class): Use str_endswith.
* modules/csharpcomp (Depends-on): Add str_endswith.

Say B5000 and U1103 don’t do C23

Mention CheriBSD as tested

doc: fix ChangeLog and mention xlc versions

i-ring: Relicense under LGPLv2+.

* modules/i-ring (License): Change to LGPLv2+.
* lib/i-ring.h: Update license notice.
* lib/i-ring.c: Likewise.

cycle-check: Relicense under LGPLv2+.

Jim Meyering's permission is at
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00109.html>.
Paul Eggert's permission is at
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00106.html>.

* modules/cycle-check (License): Change to LGPLv2+.
* lib/cycle-check.h: Update license notice.
* lib/cycle-check.c: Likewise.

dev-ino: Relicense under LGPLv2+.

Jim Meyering's permission is at
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00109.html>.

* modules/dev-ino (License): Change to LGPLv2+.
* lib/dev-ino.h: Update license notice.

cpu-supports: Fix typos.

* lib/cpu-supports.h (gcc_feature_to_glibc_hwcap): Fix typos in
comments.

cpu-supports: Add detection for Advanced SIMD (Neon) instructions.

* lib/cpu-supports.h (gcc_feature_to_glibc_hwcap): Map "asimd" to
"-ASIMD". Add a comment on where to find aarch64 hwcaps in glibc.

parse-datetime: avoid false test failure on windows

* tests/test-parse-datetime.c: Tweak so that year 2003 rather than 0003
is used, as the latter is not supported by mktime on Windows or Cygwin.
Reported by Bruno Haible.

HACKING: Add an LLM policy.

* HACKING (Acceptable use of LLM generated code): New section.

parse-datetime: Prefer ckd_add to checking overflow by hand.

* lib/parse-datetime.y (time_overflow): Use ckd_add to check for
overflow.

Update users.txt.

* users.txt: Add universal-ctags.

fchownat: port to IBM XL C for AIX 16.1

* lib/chown.c (rpl_chown):
* lib/fchownat.c (rpl_fchownat):
* lib/lchown.c (rpl_lchown):
Avoid using designated initializers (or even ordinary initializers)
in a way that provokes a bug in IBM XL C for AIX 16.1 (2018).
IBM says they will support this old compiler through April 2026
with extended support through April 2029.

stdcountof-h: port to IBM XL C for AIX 16.1

Improve the test for the bug in MSVC and Oracle Developer Studio
so that it does not rely on symbols like _MSC_VER and so is more
likely to be portable to other compilers that have the bug, e.g.,
IBM XL C for AIX 16.1.  Also, document bug since countof exposes it.
* doc/posix-headers/stdcountof.texi: New file.
* tests/test-stdcountof-h.c (a, b, c): Remove these extern decls.
(call_count): New static var.
(do_call): New static function.
(test_func): Use it to test whether the compiler bug exists with
sizeof, and if so, to skip the countof test.

obstack-printf-{posix,gnu}: Fix broken configuration result.

Reported by Eric Blake in
<https://lists.gnu.org/archive/html/bug-gnulib/2026-02/msg00028.html>.

* m4/obstack-printf.m4 (gl_FUNC_OBSTACK_PRINTF_REPLACE): New macro,
extracted from gl_FUNC_OBSTACK_PRINTF.
(gl_FUNC_OBSTACK_PRINTF): Invoke it.
* m4/obstack-printf-posix.m4 (gl_FUNC_OBSTACK_PRINTF_POSIX_REPLACE): New
macro, extracted from gl_FUNC_OBSTACK_PRINTF_POSIX.
(gl_FUNC_OBSTACK_PRINTF_POSIX): Require gl_FUNC_OBSTACK_PRINTF_REPLACE.
* m4/obstack-printf-gnu.m4 (gl_FUNC_OBSTACK_PRINTF_GNU_REPLACE): New
macro, extracted from gl_FUNC_OBSTACK_PRINTF_GNU.
(gl_FUNC_OBSTACK_PRINTF_GNU): Require gl_FUNC_OBSTACK_PRINTF_REPLACE.

crypto/sha3-buffer: pacify -Wcast-qual

* lib/sha3.c (sha3_process_bytes): Pacify clang -Wcast-qual.

crypto/rijndael: pacify -Wcast-qual

* lib/rijndael-api-fst.c (rijndaelBlockEncrypt)
(rijndaelPadEncrypt): Pacify clang -Wcast-qual.

crypto/*-buffer: propagate 'const'

Problem reported by Arun Giridhar in:
https://savannah.gnu.org/bugs/index.php?68042
* lib/gl_openssl.h (GL_CRYPTO_FN): Use a const pointer.

parse-datetime: support dd.mm. in combination

* lib/parse-datetime.y: The previous commit added DD.MM. and DD.MM.YYYY
grammar rules, plus lexer logic (NOT_DECIMAL flag) to prevent 17.6 from
being lexed as a single decimal token. The resulting shift/reduce
conflict between the two rules caused "1.2. 6:7:8.9" to consume 6 as
a year. Also the NOT_DECIMAL flag was never cleared in the DD.MM. case,
later preventing 8.9 from being lexed as a decimal.
  Since the lexer already distinguishes the contiguous 1.2.3 and spaced,
we introduce tUNUMBER_DOTTED so each rule expects different tokens,
thus removing the shift/reduce conflict.  Also we clear NOT_DECIMAL
in the normal path.
* tests/test-parse-datetime.c: Add test cases.

parse-datetime: add tests for dd.mm.yy and mm/dd/yy formats

* tests/test-parse-datetime.c: Add test cases.

poll: When setting POLLHUP in revents, set also POLLIN and POLLRDNORM.

This fixes a hang of wget2 on Windows
<https://gitlab.com/gnuwget/wget2/-/issues/715>.

* lib/poll.c (windows_compute_revents_socket): Set POLLIN and POLLRDNORM
whenever lNetworkEvents has one of the bits FD_READ, FD_ACCEPT, FD_CLOSE
set.
(compute_revents): Set POLLIN and POLLRDNORM whenever fd is set in
rfds[].

Copyright-paperwork-exempt: Yes

crypto/{sha*,md5}-buffer: Improve ./configure --help output.

* m4/gl-openssl.m4 (gl_CRYPTO_CHECK): Mention that --with-openssl=yes
will use libcrypto and --with-openssl=no will use a fallback
implementation provided by gnulib.

signbit: Fix compil. error in C++ mode on macOS 14 (regr. 2026-02-03).

* lib/math.in.h (signbit): Don't define as a template if the compiler
is clang.

isnan: Fix compilation error in C++ mode on NetBSD (regr. 2026-02-03).

* lib/math.in.h (isnan): Undefine before defining as a template.

strncpy: Change license header in sources to LGPLv2+.

Bruno Haible authored this file and approved this change here
<https://lists.gnu.org/r/bug-gnulib/2026-02/msg00047.html>.

* lib/strncpy.c: Change license header to LGPLv2+.

parse-datetime: support dd.mm.yy format

* doc/parse-datetime.texi: Document dd.mm.yy support.
* lib/parse-datetime.y: Add grammar for dd.mm.yy and dd.mm.,
and logic to distinguish from tUDECIMAL_NUMBER.

cpu-supports: fix license in source headers

* lib/cpu-supports.c: s/GPL/LGPL/ as per commit 2bad49a5f9.
* lib/cpu-supports.h: Likewise.
Reported by Collin Funk

doc: Separate header files removed by POSIX.

* doc/pastposix-headers/stropts.texi: Renamed from
doc/posix-headers/stropts.texi.
* doc/pastposix-headers/sys_timeb.texi: Renamed from
doc/posix-headers/sys_timeb.texi.
* doc/pastposix-headers/trace.texi: Renamed from
doc/posix-headers/trace.texi.
* doc/pastposix-headers/ucontext.texi: Renamed from
doc/posix-headers/ucontext.texi.
* doc/pastposix-headers/ulimit.texi: Renamed from
doc/posix-headers/ulimit.texi.
* doc/pastposix-headers/utime.texi: Renamed from
doc/posix-headers/utime.texi.
* doc/Makefile (GNULIB_TEXI_FILES): Add files from
doc/pastposix-functions and doc/pastposix-headers.
* doc/gnulib.texi (Legacy Header File Substitutes): New node. Move
header files removed from POSIX here.

doc: Fix links to headers removed in POSIX.1-2024 (regr. 2024-07-20).

* doc/posix-headers/stropts.texi: Use the POSIX.1-2017 link where this
header exists.
* doc/posix-headers/trace.texi: Likewise.
* doc/posix-headers/ulimit.texi: Likewise.
* doc/posix-headers/utime.texi: Likewise.

gendocs: support compound $MAKEINFO

* build-aux/gendocs.sh: Use eval consistently with $MAKEINFO,
to support it being a compound command.  In coreutils at least,
it has the value: SHELL='/bin/sh' build-aux/makeinfo-wrapper.sh
Reported by Collin Funk.

maintainer-makefile: propagate MAKEINFO to gendocs

* top/maint.mk (web-manual): Propagate MAKEINFO explicitly,
rather than requiring it exported in the environment,
which can be awkward on Solaris make for example.

do-release-commit-and-tag: Fix stub line numbers.

Reported by Pádraig Brady in
<https://lists.gnu.org/r/bug-gnulib/2026-02/msg00027.html>.
* build-aux/do-release-commit-and-tag: The stub_line number is
relative to the --stub-lines sed address, so offset it accordingly.

autoupdate

maintainer-makefile: Avoid false positives of unsigned_* syntax checks.

* top/maint.mk (sc_unsigned_char, sc_unsigned_short, sc_unsigned_int,
sc_unsigned_log): Add ‘exclude’ patterns so that these tests do not
throw a false positive on their own commentary.

Copyright-paperwork-exempt: Yes

autoupdate

maintainer-makefile: Avoid false positive of fsf_postal syntax check.

* top/maint.mk (sc_fsf_postal): Adjust ‘prohibit’ regex to not match
itself.

Copyright-paperwork-exempt: Yes

signbit: Make more C++ safe.

* lib/math.in.h (signbit): In C++ mode, define as a template with three
instantiations, instead of as a macro.

isnan: Make more C++ safe.

* lib/math.in.h (isnan): In C++ mode, define as a template with three
instantiations, instead of as a macro.

isinf: Make more C++ safe.

* lib/math.in.h (isinf): In C++ mode, define as a template with three
instantiations, instead of as a macro.

isinf: Avoid unnecessary override of isinf().

* m4/isinf.m4 (gl_ISINFL_WORKS): Link the test program with -lm if
necessary.

isfinite-no-c++: Avoid unnecessary override of isfinite().

* m4/isfinite.m4 (gl_ISFINITEL_WORKS): Link the test program with -lm if
necessary.

filename: warn re IS_RELATIVE_FILE_NAME ("")

* lib/filename.h: Add warning that IS_RELATIVE_FILE_NAME ("") is 1.

gettext: Partially update to gettext 1.0.

* m4/gettext.m4: Update from gettext 1.0.
* m4/nls.m4: Likewise.
* m4/progtest.m4: Likewise.

relocatable-prog-wrapper: Fix syntax error on Linux (regr. 2025-12-09).

Reported by Erik Schnetter <schnetter@gmail.com>
at <https://savannah.gnu.org/bugs/?67987>.

* lib/progreloc.c (find_executable): Remove extraneous brace.

doc: Fix some links to copy_file_range issues.

* doc/glibc-functions/copy_file_range.texi: Correct the order of
arguments to @url.