* m4/wctob.m4 (gl_FUNC_WCTOB): If the gnulib headers override wint_t,
set REPLACE_WCTOB.
* modules/wctob (Files): Add wint_t.m4.
* doc/posix-functions/wctob.texi: Mention the problem on newer mingw.
I ran into some problems with GNU sed on NetBSD and
endeavored to fix some of them by altering the mbrtoc32 replacement,
so that in the C locale it always converts bytes with the top
bit set to 0xDFxx, instead of doing it only sometimes.
This patch also updates commentary to match current POSIX standards
and some newer OS releases.
* lib/mbrtoc32.c (mbrtoc32): Also convert (e.g.) 0xED to 0xDFED
when !GNULIB_defined_mbstate_t && HAVE_WORKING_MBRTOC32 &&
HAVE_WORKING_C32RTOMB && !MBRTOC32_MULTIBYTE_LOCALE_BUG &&
MBRTOC32_IN_C_LOCALE_MAYBE_EILSEQ.
* tests/test-mbrtoc16.c (main):
* tests/test-mbrtoc32.c (main):
Simplify, now that we always do that conversion.
macOS 27 will introduce pipe2 and looks like Apple thought
about also introducing dup3 but didn't pull the trigger.
Also, mention some other platforms.
Reported by Paul Eggert in
<https://lists.gnu.org/archive/html/bug-gnulib/2026-08/msg00222.html>.
* m4/mbrtoc32.m4 (gl_MBRTOC32_C_LOCALE_LIKE_ISO_8859): New macro.
(gl_FUNC_MBRTOC32): Define MBRTOC32_IN_C_LOCALE_MAYBE_LIKE_ISO_8859 and
set REPLACE_MBRTOC32 on platforms such as OpenBSD.
* lib/mbrtoc32.c (mbrtoc32) [MBRTOC32_IN_C_LOCALE_MAYBE_LIKE_ISO_8859]:
In the C locale, map 0x80..0xFF differently.
* lib/btoc32.c (btoc32) [MBRTOC32_IN_C_LOCALE_MAYBE_LIKE_ISO_8859]:
Likewise.
* doc/posix-functions/mbrtoc32.texi: Mention the OpenBSD problem.
Problem reported by Bruno Haible in:
https://lists.gnu.org/r/bug-gnulib/2026-08/msg00288.html
* lib/gettext.h (textdomain, bindtextdomain, bind_textdomain_codeset)
[!ENABLE_NLS && __GNUC__ && !__clang__ && !__cplusplus]:
Define to no-ops in this case too.
Move the definition of _LIBGETTEXT_FUNCAST up one level of
ifdeffery so that it is defined for this case.
* tests/test-gettext-h.c (main) [!ENABLE_NLS]: Call textdomain,
reverting the previous change to this file.
If GNULIB_LOCALENAME_SINGLE_THREAD is defined,
omit locks in localename and getlocalename-related functions.
Useful for GNU grep; see <https://bugs.gnu.org/81515>.
* lib/getlocalename_l-unsafe.c, lib/getlocalename_l.c:
* lib/localename.c (USE_ISOC_AND_POSIX_THREADS, USE_ISOC_THREADS)
(USE_POSIX_THREADS, USE_WINDOWS_THREADS)
[GNULIB_LOCALENAME_SINGLE_THREAD]: Undef.
Also, port better to non-glibc, and in documentation update the
list of platforms needing a fix. This includes 32-bit platforms
using AddressSanitizer, unfortunately.
* m4/malloc.m4 (gl_CHECK_MALLOC_PTRDIFF): Invoke gl_MUSL_LIBC.
musl is safe, as is FreeBSD 11+, NetBSD 8+, OpenBSD 5.6+, AIX,
Microsoft Windows. However, the AddressSanitizer is unsafe.
* doc/gnulib-intro.texi (Supported Platforms):
Also mention z/OS, Fil-C. Not sure where they should be listed
but I gave it a guess.
* doc/posix-functions/snprintf.texi (snprintf):
* doc/posix-functions/vsnprintf.texi (vsnprintf):
Also mention Fil-C bug.
* build-aux/gendocs.sh (calcsize): Output human-readable file
size, rather than always size in KiB mislabled as "K bytes".
But fall back on a plain byte count if GNU du is not in use.
(time-stamp-time-zone): Now "UTC0" so scriptversion does not decrease.
* doc/gendocs_template, doc/gendocs_template_min:
Don’t assume sizes are in KiB (the old values were mislabeled anyway).
Be more consistent about file type labels.
I ran into this problem when doing stress testing with GNU m4.
The problem is that ("%*d", INT_MAX, n) fails because the code
refuses to create a buffer of size INT_MAX + 1u,
due to problems when dealing with older nonconforming snprintf.
The simplest fix was to use snprintf only if it handles
sizes like INT_MAX + 1u, and to fall back on sprintf otherwise.
Nowadays I think snprintf should work on most practical targets.
Assuming this patch works out, perhaps we could simplify
lib/vasnprintf.c to ease further maintenance,
as nowadays I hope we can assume both HAVE_SNPRINTF_RETVAL_C99 and
HAVE_SNPRINTF_TRUNCATION_C99 on platforms where USE_SNPRINTF.
* lib/vasnprintf.c: Include minmax.h.
(USE_SNPRINTF): Define to 1 only if glibc 2+, Android, musl,
the BSDs, macOS, or Microsoft UCRT.
(VASNPRINTF) [USE_SNPRINTF]:
Allow maxlen to be 1 greater than INT_MAX on 64-bit platforms.
Document the limit’s derivation by using named locals.
Do not attempt to work around bugs in pre-C99 implementations,
as USE_SNPRINTF is pickier now.
* m4/vasnprintf.m4 (gl_PREREQ_VASNWPRINTF):
Move gl_MUSL_LIBC call from here ...
(gl_PREREQ_VASNXPRINTF): ... to here.
* modules/c-vasnprintf, modules/unistdio/u16-u16-vasnprintf:
* modules/unistdio/u16-vasnprintf:
* modules/unistdio/u32-u32-vasnprintf:
* modules/unistdio/u32-vasnprintf:
* modules/unistdio/u8-u8-vasnprintf:
* modules/unistdio/u8-vasnprintf, modules/unistdio/ulc-vasnprintf:
* modules/vasnprintf, modules/vasnwprintf:
(Files): Add m4/musl.m4 if it isn’t there already.
(Depends-on): Add minmax.
* tests/test-vasnprintf-posix.c:
* tests/test-vasprintf-posix.c:
* tests/test-vaszprintf-posix.c:
Include <limits.h> and <errno.h> if needed.
(test_function): Test for the bug, if RUN_EXPENSIVE_TESTS=yes
in the environment; this the coreutils tradition and I
didn’t see any Gnulib tradition so I just used it.
On platforms that define AT_EMPTY_PATH, allow a null pointer to be
passed as a file name. This is GNU behavior as of glibc 2.41 +
Linux kernel 6.11, and can be supported on older kernels, older
glibcs, and on recent FreeBSD and z/OS.
* lib/fstatat.c (rpl_fstatat): Support AT_EMPTY_PATH,
if it exists, on null pointers.
* m4/fstatat.m4 (gl_FUNC_FSTATAT): Replace fstatat if
AT_EMPTY_PATH is defined but does not work on null pointers.
Also, define HAVE_WORKING_FSTATAT_ZERO_FLAG, if it is discovered,
regardless of whether replacing fstatat. This refactoring makes
config.h a bit less confusing.
* tests/test-fstatat.c (main): Test AT_EMPTY_PATH if defined.
* lib/locale.in.h (localeconv): Change the return type to
'const struct lconv *'.
(GNULIB_defined_localeconv): New macro.
* lib/localeconv.c (localeconv): Change the return type to
'const struct lconv *'. Change a variable from 'struct lconv *' to
'const struct lconv *'.
* doc/posix-functions/localeconv.texi: Document that Gnulib uses the
return type 'const struct lconv *'.
* NEWS: Mention the change.
* m4/localeconv.m4 (gl_FUNC_LOCALECONV): Change a variable from
'struct lconv *' to 'const struct lconv *'.
* tests/test-localeconv.c (localeconv): Update expected signature.
(main): Change a variable from 'struct lconv *' to
'const struct lconv *'.
* tests/test-locale-h-c++.cc (GNULIB_NAMESPACE::localeconv): Update
expected signature.
* lib/locale.in.h (setlocale): Change the return type to 'const char *'.
* lib/setlocale.c (setlocale_mtsafe, setlocale_unixlike): Change the
return type to 'const char *'. Remove a cast.
(setlocale_single): Change the return type to 'const char *'.
(setlocale_improved): Change the return type to 'const char *'. Change
three variables from 'char *' to 'const char *'. Add local variable
old_locale.
* lib/localcharset.c (locale_charset): Change two variables from
'char *' to 'const char *'.
* doc/posix-functions/setlocale.texi: Document that Gnulib uses the
return type 'const char *'.
* NEWS: Mention the change.
* m4/mbrtowc.m4 (gl_MBRTOWC_C_LOCALE): Change a variable from 'char *'
to 'const char *'.
* m4/mbrtoc32.m4 (gl_MBRTOC32_C_LOCALE, gl_MBRTOC32_UTF8_LOCALE):
Likewise.
* m4/mbrtoc16.m4 (gl_MBRTOC16_C_LOCALE): Likewise.
* tests/test-setlocale-w32utf8.c (main): Likewise.
* tests/test-setlocale1.c (setlocale): Update expected signature.
* tests/test-locale-h-c++.cc (GNULIB_NAMESPACE::setlocale): Likewise.
* m4/mbrtowc.m4 (gl_MBRTOWC_INVALID_UTF8): New macro.
(gl_FUNC_MBRTOWC): Invoke it. Define MBRTOWC_INVALID_UTF8_BUG if mbrtowc
does not recognize some invalid UTF-8 byte sequences.
* lib/mbrtowc.c (is_locale_utf8, is_locale_utf8_cached): Define also if
MBRTOWC_INVALID_UTF8_BUG.
(rpl_mbrtowc): Handle UTF-8 locales specially also on NetBSD.
* tests/test-mbrtowc.c (main): Add more test cases for the UTF-8
encoding.
* tests/test-mbrlen.c (main): Likewise.
* doc/posix-functions/mbrtowc.texi: Mention the NetBSD bug.
* doc/posix-functions/mbrlen.texi: Likewise.
* lib/stdbit.in.h (stdc_bit_floor, stdc_bit_ceil): Override the macro
definition from Solaris 11.
* doc/posix-functions/stdc_bit_floor.texi: Mention the Solaris 11
OpenIndiana bug.
* doc/posix-functions/stdc_bit_ceil.texi: Likewise.
