* manual/filesys.texi (Symbolic Links): Fix description of
canonicalize_file_name based on patch by Oskar Liljeblad
<oskar@osk.mine.nu>.
2005-12-31 Andreas Jaeger <aj@suse.de>
[BZ #1395]
* manual/filesys.texi (Symbolic Links): Fix description of
canonicalize_file_name based on patch by Oskar Liljeblad
<oskar@osk.mine.nu>.
* manual/stdio.texi (Hook Functions): Correct type of position
parameter of seeker and fix fallout of the change in the text.
* wcsmbs/tst-mbrtowc2.c: New file.
* wcsmbs/Makefile (tests): Add tst-mbrtowc2.
2005-08-29 Thomas Schwinge <schwinge@nic-nac-project.de>
[BZ #1261]
* manual/memory.texi (Hooks for Malloc): Correct prototype of
my_init_hook and definition of my_free_hook.
next_last_offset.
(struct re_dfa_t): Remove unused member states_alloc.
* posix/regcomp.c (init_dfa): Don't initialize unused members.
2005-08-25 Paul Eggert <eggert@cs.ucla.edu>
* posix/regexec.c (set_regs): Don't alloca with an unbounded size.
alloca modernization/simplification for regex.
* posix/regex.c: Remove portability cruft for alloca. This no longer
needs to be at the start of the file, and can be moved into
regex_internal.h and simplified.
* posix/regex_internal.h: Include <alloca.h>.
(__libc_use_alloca) [!defined _LIBC]: New macro.
* posix/regexec.c (build_trtable): Remove "#ifdef _LIBC",
since the code now works outside glibc.
2005-09-06 Ulrich Drepper <drepper@redhat.com>
* include/regex.h: Remove use of _RE_ARGS.
2005-08-25 Paul Eggert <eggert@cs.ucla.edu>
* posix/regexec.c (find_recover_state): Change "err" to "*err".
2005-08-24 Paul Eggert <eggert@cs.ucla.edu>
* posix/regcomp.c (regerror): Pointer args are 'restrict',
as per POSIX.
* posix/regex.h (regerror): Likewise.
* manual/pattern.texi (POSIX Regexp Compilation): Likewise.
Similarly for regcomp and regexec. Also, first 2 args of regexec
and 2nd arg of regerror are const.
* posix/regex.c: Do not include <sys/types.h>, as POSIX no longer
requires this. (The code never needed it.)
2005-08-20 Paul Eggert <eggert@cs.ucla.edu>
* posix/regexec.c (sift_states_bkref): re_node_set_insert returns
int, not reg_errcode_t.
* posix/regex_internal.c (calc_state_hash): Put 'inline' before type,
since some broken compilers warn about it otherwise.
* posix/regcomp.c (create_initial_state): Remove duplicate decl.
2005-08-20 Paul Eggert <eggert@cs.ucla.edu>
* posix/regex.h (_RE_ARGS): Remove. No longer needed, since we assume
C89 or better. All uses removed.
2005-09-06 Ulrich Drepper <drepper@redhat.com>
* posix/regex.c: Prevent using C++ compilers.
2005-08-19 Paul Eggert <eggert@cs.ucla.edu>
* posix/regcomp.c (duplicate_node): Return new index, not an error
code, and let the caller return REG_ESPACE if out of space. This
removes an uninitialied-variable warning with GCC 4.0.1, and also
avoids taking the address of a local variable. All callers
changed.
2005-09-06 Ulrich Drepper <drepper@redhat.com>
* include/time.h (__strptime_internal): Rename parameter to avoid
bogus compiler warning.
2005-08-19 Jim Meyering <jim@meyering.net>
* posix/regexec.c (proceed_next_node): Redo local variables to
avoid GCC shadowing warnings.
2005-09-06 Ulrich Drepper <drepper@redhat.com>
* posix/regex_internal.c (re_acquire_state): Minor code rearrangement.
(re_acquire_state_context): Likewise.
2005-08-19 Paul Eggert <eggert@cs.ucla.edu>
* posix/regex_internal.c (re_string_realloc_buffers):
(re_node_set_insert, re_node_set_insert_last, re_dfa_add_node):
Rename local variables to avoid GCC shadowing warnings.
2005-07-08 Eric Blake <ebb9@byu.net>
Paul Eggert <eggert@cs.ucla.edu>
* posix/regcomp.c (init_dfa): Store __btowc value in wint_t, not
wchar_t. Remove now-unnecessary cast.
(build_range_exp): Likewise.
EKEYREVOKED, EKEYREJECTED.
* sysdeps/unix/sysv/linux/Versions (libc: GLIBC_2.3.4): New errlist.
* sysdeps/gnu/errlist.c: Regenerated
* sysdeps/gnu/errlist-compat.awk: Don't bail if Versions gives a count
higher than ERR_MAX reports. Instead, emit a #define ERR_MAX.
* sysdeps/gnu/Makefile ($(objpfx)errlist-compat.h): New target.
(generated): Add errlist-compat.h.
* sysdeps/gnu/errlist.awk: Make output #include <errlist-compat.h> to
define ERR_MAX and use that for table size.
Update.
2004-07-14 Jakub Jelinek <jakub@redhat.com>
[BZ #266]
* manual/string.texi (l64a): Note that the static buffer is 7 bytes
long. Rewrite example code so that it takes account l64a output
shorter than 6 characters.
Reported by Julian Graham <julian.graham@aya.yale.edu>.
* manual/signal.texi (Interrupted Primitives): Make clear that
TEMP_FAILURE_RETRY evaluates its expression as long int and compares
it to -1 to define "failure".
2004-04-21 Jakub Jelinek <jakub@redhat.com>
* posix/tst-chmod.c (do_test): Fix a typo.
* elf/lateglobal.c (main): Fix error checks.
Patch by Stephen Clarke <stephen.clarke@st.com>.
* manual/ctype.texi (isblank, iswblank): Mark as ISO functions,
mention they have been added in ISO C99.
Reported by Ben Pfaff <blp@cs.stanford.edu>.
2004-03-31 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/ieee754/ldbl-128/bits/huge_vall.h: Fix typo.
2003-11-07 Jakub Jelinek <jakub@redhat.com>
* io/ftw.c (NFTW_OLD_NAME, NFTW_NEW_NAME): Define.
(ftw_dir, ftw_startup): Add __attribute ((noinline)).
(NFTW_OLD_NAME, NFTW_NEW_NAME): New functions.
(NFTW_NAME): Only define if !_LIBC, add versioned_symbol
and compat_symbol.
* io/ftw64.c (NFTW_OLD_NAME, NFTW_NEW_NAME): Define.
* io/Versions (libc): Export nftw@@GLIBC_2.3.3
and nftw64@@GLIBC_2.3.3.
* io/ftw.h (FTW_ACTIONRETVAL): New flag.
(FTW_CONTINUE, FTW_STOP, FTW_SKIP_SUBTREE, FTW_SKIP_SIBLINGS): New.
* io/ftw.c (ftw_dir): Add old_dir argument.
Clear result if it was FTW_SKIP_SIBLINGS after processing all
dir entries. Change cwd back if old_dir != NULL.
(process_entry): Adjust caller. Don't change cwd back here.
Change FTW_SKIP_SUBTREE result to 0.
(ftw_startup): Adjust ftw_dir caller.
Clear result if it was FTW_SKIP_SUBTREE or FTW_SKIP_SIBLINGS.
* io/ftwtest.c (skip_subtree, skip_siblings): New variables.
(options, main): Add --skip-subtree and --skip-siblings options.
(cb): Use return FTW_CONTINUE instead of return 0.
Handle --skip-subtree and --skip-siblings.
* io/ftwtest-sh: Add tests for FTW_ACTIONRETVAL.
* manual/filesys.texi: Document FTW_ACTIONRETVAL.
2003-04-27 Bruno Haible <bruno@clisp.org>
* manual/message.texi (Advanced gettext functions): Add information
about Korean, Portuguese, Latvian. Gaeilge is also known as Irish.
Add section about Lithuanian, reported by Ricardas Cepas
<rch@richard.eu.org>.
Add information about Croatian.
Ukrainian is like Russian, reported by Andy Rysin <arysin@yahoo.com>.
Remove remark about continuation lines that is not true for PO files.
Fix formula for Slovenian, reported by Roman Maurer
<roman.maurer@amis.net>.
2003-02-05 Ulrich Drepper <drepper@redhat.com>
* libio/putwc_u.c: Use _IO_putwc_unlocked, not _IO_putc_unlocked.
Patch by Moritz Schulte <moritz@duesseldorf.ccc.de>.
2003-01-14 Ulrich Drepper <drepper@redhat.com>
* manual/install.texi: Correct description of header preparation for
Linux build. Patch by mhwood@Ameritech.Net [PR libc/4941].
2002-11-04 Ulrich Drepper <drepper@redhat.com>
* manual/examples/dir.c: Don't include <stddef.h>.
* manual/examples/select.c: Include <errno.h> for TEMP_FAILURE_RETRY.
Reported by Frdric Delanoy <delanoy_f@yahoo.com>.
2002-11-02 H.J. Lu <hjl@gnu.org>
* stdio-common/reg-printf.c: Include <stddef.h>.
description to be clearer and to say that *RESULT is set to ENTRY.
2002-10-30 Jakub Jelinek <jakub@redhat.com>
* posix/regexec.c (build_trtable): Alloca or malloc dests_node and
dests_ch arrays together. Alloca or malloc dest_states,
dest_states_word and dest_states_nl arrays together. Free memory on
error exit.
2002-10-29 Daniel Jacobowitz <drow@mvista.com>
* crypt/crypt_util.c (__init_des_r): Initialize current_salt
and current_saltbits.
2002-11-02 Roland McGrath <roland@redhat.com>
changed from [USE_TLS && HAVE___THREAD].
* sysdeps/i386/dl-machine.h (elf_machine_type_class, elf_machine_rel):
Disable TLS relocs if [RTLD_BOOTSTRAP && !USE___THREAD].
* sysdeps/x86_64/dl-machine.h
(elf_machine_type_class, elf_machine_rela): Likewise.
* sysdeps/sh/dl-machine.h (elf_machine_type_class, elf_machine_rela):
Likewise.
* include/link.h (struct link_map): Remove member l_tls_tp_initialized.
* elf/rtld.c (_dl_start_final, dl_main): Don't use it.
(_dl_start): Conditionalize PT_TLS check on [USE___THREAD].
* sysdeps/i386/dl-tls.h (__TLS_GET_ADDR): Use ___tls_get_addr_internal
instead of ___tls_get_addr.
(___tls_get_addr_internal): Add attribute_hidden to decl.
* sysdeps/generic/ldsodefs.h (struct rtld_global): New variable
_dl_error_catch_tsd.
* elf/rtld.c (startup_error_tsd): New function.
(dl_main): Point _dl_error_catch_tsd at that.
* elf/dl-error.c: Don't use libc-tsd.h for DL_ERROR,
use new function pointer instead.
* elf/dl-tsd.c: New file.
* elf/Makefile (routines): Add it.
2002-10-07 Roland McGrath <roland@redhat.com>
* elf/dl-misc.c (_dl_debug_vdprintf): Use INTERNAL_SYSCALL macro for
writev if it's available. Otherwise if [RTLD_PRIVATE_ERRNO] then
take _dl_load_lock around calling __writev.
* sysdeps/unix/sysv/linux/i386/sysdep.h (INTERNAL_SYSCALL): New macro.
(INLINE_SYSCALL): Use that.
* sysdeps/generic/dl-sysdep.h: New file.
* sysdeps/mach/hurd/dl-sysdep.h: New file.
* sysdeps/generic/ldsodefs.h: Include <dl-sysdep.h>.
* include/errno.h [IS_IN_rtld]: Include <dl-sysdep.h> to define ...
[RTLD_PRIVATE_ERRNO]: Use a hidden global variable for errno and
access it directly.
* elf/dl-minimal.c (__errno_location): Removed.
* sysdeps/unix/i386/sysdep.S (__syscall_errno) [RTLD_PRIVATE_ERRNO]:
Use GOTOFF access for errno.
* sysdeps/unix/sysv/linux/i386/sysdep.h
[RTLD_PRIVATE_ERRNO] (SYSCALL_ERROR_HANDLER): Likewise.
* sysdeps/unix/x86_64/sysdep.S (__syscall_errno) [RTLD_PRIVATE_ERRNO]:
Use PC-relative access for errno.
* sysdeps/unix/sysv/linux/x86_64/sysdep.h
[RTLD_PRIVATE_ERRNO] (SYSCALL_ERROR_HANDLER): Likewise.
* include/tls.h: New file.
(USE___THREAD): New macro.
Define to 1 under [USE_TLS && HAVE___THREAD] and only when compiling
libc or libpthread.
* sysdeps/unix/sysv/linux/i386/sysdep.h [USE___THREAD]: Conditional
changed from [USE_TLS && HAVE___THREAD].
* sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
* sysdeps/unix/i386/sysdep.S: Likewise.
* sysdeps/unix/x86_64/sysdep.S: Likewise.
* include/errno.h: Likewise.
* include/netdb.h: Likewise.
* include/resolv.h: Likewise.
* sysdeps/generic/errno.c: New file.
* csu/Makefile (aux): New variable, list errno.
* sysdeps/unix/sysv/linux/i386/sysdep.S (errno, _errno): Remove defns.
* sysdeps/unix/sysv/linux/m68k/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/arm/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/cris/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/hppa/sysdep.c: Likewise.
* sysdeps/unix/sysv/linux/ia64/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/sysdep.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/sh/sysdep.S: Likewise.
* sysdeps/unix/alpha/sysdep.S: Likewise.
* sysdeps/generic/start.c: Likewise.
* sysdeps/unix/start.c: Likewise.
* sysdeps/unix/arm/start.c: Likewise.
* sysdeps/unix/bsd/ultrix4/mips/start.S: Likewise.
* sysdeps/unix/sparc/start.c: Likewise.
* sysdeps/unix/sysv/irix4/start.c: Likewise.
* sysdeps/unix/sysv/linux/mips/sysdep.S: File removed.
* manual/search.texi (Tree Search Function, Hash Search Function):
Mention search.h clearly.
2002-10-05 Roland McGrath <roland@redhat.com>
* elf/dl-fxstat64.c: File removed.
* elf/dl-xstat64.c: File removed.
* elf/Makefile (rtld-routines): Remove them.
* sysdeps/unix/sysv/linux/xstat64.c: Remove RTLD_STAT64 conditionals.
Instead, use strong_alias instead of versioned_symbol in the
!SHLIB_COMPAT case.
* sysdeps/unix/sysv/linux/fxstat64.c: Likewise.
* sysdeps/unix/sysv/linux/lxstat64.c: Likewise.
* include/shlib-compat.h
(SHLIB_COMPAT): Require that IS_IN_##lib be defined nonzero.
[! NOT_IN_libc] (IS_IN_libc): Define it.
* cppflags-iterator.mk (CPPFLAGS-$(cpp-src)): Use -Dx=1 not just -Dx.
* elf/Makefile (CPPFLAGS-.os): Likewise.
* sunrpc/rpc_main.c (main): Don't declare with noreturn attribute.
Return the status instead of calling exit.
* Makeconfig (CFLAGS): Prepend -std=gnu99.
* Makerules (+make-deps): Use $(CFLAGS) only for .c sources.
Remove superfluous rm command, whose @ plus make bugs hid
all these commands from the make output.
* include/stubs-prologue.h: New file. Give #error under #ifdef _LIBC.
* Makefile ($(inst_includedir)/gnu/stubs.h): Depend on it.
Use that file's contents instead of literal echo's for the prologue.
* include/features.h: Include <gnu/stubs.h> unconditionally.
* include/gnu/stubs.h: New file.
2002-09-30 Roland McGrath <roland@redhat.com>
* elf/rtld-Rules: New file.
* elf/Makefile ($(objpfx)librtld.map, $(objpfx)librtld.mk,
$(objpfx)rtld-libc.a): New targets.
(generated): Add them.
(reloc-link): Remove -o $@ from the variable.
($(objpfx)dl-allobjs.os): Add -o $@ after $(reloc-link).
(distribute): Add rtld-Rules.
(CPPFLAGS-.os): Define this instead of CFLAGS-.os.
* Makerules ($(+sysdir_pfx)sysd-rules): Emit rules for rtld-% targets.
(common-mostlyclean, common-clean): Clean up rtld-* files.
* sysdeps/unix/make-syscalls.sh: Add rtld-*.os target name to rules.
* sysdeps/mach/hurd/bits/errno.h: Regenerated.
* sysdeps/gnu/Versions: New file.
* sysdeps/unix/sysv/linux/Versions (libc: GLIBC_2.1): Remove
_sys_errlist; sys_errlist; _sys_nerr; sys_nerr; from here.
* sysdeps/gnu/Makefile ($(..)sysdeps/gnu/errlist-compat.c): New target.
($(objpfx)errlist.d): Depend on $(..)sysdeps/gnu/errlist-compat.c.
* sysdeps/gnu/errlist.awk: Make output define _sys_errlist_internal
and _sys_nerr_internal instead of anything else. Make it include
"errlist-compat.c" if [!NOT_IN_libc && !ERRLIST_NO_COMPAT].
Make it emit some asm magic if [EMIT_ERR_MAX].
* sysdeps/gnu/errlist.c: Regenerated.
* sysdeps/gnu/errlist-compat.awk: New file.
* sysdeps/gnu/errlist-compat.c: New file (generated).
* sysdeps/mach/hurd/errlist.c (ERRLIST_NO_COMPAT): New macro.
(_sys_errlist_internal): Define this as a macro for _hurd_errlist.
(_sys_nerr_internal): Define this is a macro for _hurd_nerr.
(SYS_ERRLIST, SYS_NERR): Macros removed.
(sys_nerr, _sys_nerr): Remove these weak aliases.
* sysdeps/unix/sysv/linux/errlist.c: File removed.
* sysdeps/unix/sysv/linux/errlist.h: File removed.
* sysdeps/unix/sysv/linux/arm/errlist.c: File removed.
* include/libc-symbols.h (declare_symbol): New macro.
* config.h.in (ASM_TYPE_DIRECTIVE_PREFIX): New #undef.
* configure.in: New check to define it.
* configure: Regenerated.
* sysdeps/ieee754/dbl-64/e_pow.c (log1): Define and initialize
two52 locally.
(log2): Likewise.
* sysdeps/ieee754/dbl-64/upow.h: Remove definition of two52.
Patch by Simon Gee <simong@agile.tv>.
* sysdeps/unix/sysv/linux/getsysstats.c (__get_nprocs_conf):
Prefer reading /proc/stat since it is more uniform across
architectures.1
* manual/texinfo.tex: Update to latest official version.
* configure: Regenerated.
* manual/install.texi (Tools for Compilation): Say 3.2 is required.
(Configuring and compiling): Don't mention older GCC versions any more.
* INSTALL: Regenerated.
* manual/install.texi (Configuring and compiling, Installation,
Running make install, Linux): Linux -> GNU/Linux where appropriate.
* elf/rtld.c (_dl_start_final): Move defn before _dl_start so it can
be inlined. Declare it with always_inline if [DONT_USE_BOOTSTRAP_MAP]
and with noinline otherwise. Remove hack alloca use to prevent
inlining, we can ask for it explicitly nowadays.
2002-07-22 Philip Blundell <philb@gnu.org>
* sysdeps/unix/sysv/linux/arm/errlist.c: Remove extra weak alias
definiton of _old_sys_nerr. Define _old_sys_errlist as strong
alias.
2002-06-29 Ulrich Drepper <drepper@redhat.com>
* catgets/gencat.c (read_input_file): Handle more than one slash
at end of line correctly [PR libc/3926].
Based on a patch by Steven Kim <steven.kim@peregrine.com>.
* catgets/sample.SJIS: Add test case for above bug.
* catgets/test-gencat.c: Adjust test code.
* catgets/test-gencat.sh: Adjust expected results.
* elf/do-rel.h (elf_dynamic_do_rel): Avoid overflow in computation
to skip relative relocations.
Patch by Geoff Keating <geoffk@redhat.com>.
2002-05-27 Alexandre Oliva <aoliva@redhat.com>
* configure.in (DO_STATIC_NSS): Define if --disable-shared.
2002-05-26 Bruno Haible <bruno@clisp.org>
* iconvdata/iso-2022-jp.c (BODY for TO_LOOP): Avoid running off the
end of the ISO-8859-7 from idx table.
2002-05-27 Ulrich Drepper <drepper@redhat.com>
* manual/lang.texi: Fix FLT_EPSILON description [PR libc/3649].
2002-05-24 David S. Miller <davem@redhat.com>
* string/bits/string2.h (memset): Do not try to optimize when
not _STRING_ARCH_unaligned if GCC will do the right thing.
2002-05-21 Isamu Hasegawa <isamu@yamato.ibm.com>
* posix/regex.c: Define `inline' as a macro into nothing for the
compilers which lack the keyword.
* posix/regex.h: (RE_SYNTAX_GNU_AWK): Remove RE_CONTEXT_INVALID_OPS
for the compatibility of gawk.
* posix/regcomp.c: Add fake implementation of isblank() for the
environments which lack the function.
Don't use free_charset() in case of non-i18n envs.
(build_range_exp): Don't use i18n related code in case of non-i18n
envs.
(build_collating_symbol): Likewise.
(build_equiv_class): Likewise.
(build_charclass): Likewise.
(re_compile_fastmap_iter): Likewise.
(parse_bracket_exp): Likewise.
(build_word_op): Likewise.
(regfree): Don't use free_charset() in case of non-i18n envs.
* posix/regex_internal.h: Remove COMPLEX_BRACKET from
re_token_type_t in case of non-i18n envs.
Don't define re_charset_t in case of non-i18n envs.
Change the type of wcs of re_string_t from wchar_t to wint_t,
since we store also WEOF.
* posix/regex_internal.c: (re_string_realloc_buffers): Change
the type of wcs of re_string_t from wchar_t to wint_t.
(re_string_reconstruct): Likewise.
(create_ci_newstate): Don't use i18n related code in case of
non-i18n envs.
(create_cd_newstate): Likewise.
2002-05-24 Ulrich Drepper <drepper@redhat.com>
* iconv/loop.c: Fix typo.
2002-05-23 Jakub Jelinek <jakub@redhat.com>
* inet/ether_line.c (ether_line): Fix a typo causing only
lower 4 bits of each ethernet address byte being assigned.
Don't modify what line points to.
* inet/tst-ether_aton.c (main): Add ether_line tests.
2002-05-23 Marcus Brinkmann <marcus@gnu.org>
* manual/filesys.texi: Don't make readlink example leak memory
when readlink fails.
2002-03-14 Jakub Jelinek <jakub@redhat.com>
* locale/broken_cur_max.c (__ctype_get_mb_cur_max): Use nl_langinfo.
* locale/Versions (_nl_current_LC_COLLATE, _nl_current_LC_CTYPE):
Remove.
2002-03-14 Jakub Jelinek <jakub@redhat.com>
* sysdeps/generic/mp_clz_tab.c: New file.
* sysdeps/i386/mp_clz_tab.c: New file.
* sysdeps/hppa/mp_clz_tab.c: New file.
* sysdeps/powerpc/mp_clz_tab.c: New file.
* stdlib/Makefile (aux): Revert last patch.
* math/Makefile (gmp-objs): Likewise.
2002-03-13 Paul Eggert <eggert@twinsun.com>
* time/strftime.c: Comment fixes for references to obsolescent
standards, In most cases the simplest fix is to remove the
confusing comments. Cross-referencing all the standards properly
is a bit of a pain, and it should be enough to put that info in
the documentation as I did in my recent time.texi patch.
2002-03-13 Paul Eggert <eggert@twinsun.com>
* manual/time.texi (Formatting Calendar Time):
ISO C99 also specifies the E and O modifiers.
%P is a GNU extension, and is not in ISO C99.
Mention that %r is equivalent to %I:%M:%S %p in the POSIX locale.
%T is also in ISO C99.
The RFC 822 example is not valid in arbitrary locales.
Reword the POSIX.2 wording slightly, to make it a bit clearer
that POSIX.2 formats are also supported by later POSIX versions.
If a format was introduced in ISO C99 it is also required by
POSIX.1-2001.
