diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 14:12:05 +0000 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 14:12:05 +0000 |
| commit | 963c37d5c0eb62b38f8764b23931c0dcdd497a13 (patch) | |
| tree | 12a521ddf17b3e1bb26594656bbb05903c54afd0 /posix/regex.h | |
| parent | 7bb5f8a836b916d6ebf7b6921b136e99cea2442d (diff) | |
| parent | 3c03baca37fdcb52c3881e653ca392bba7a99c2b (diff) | |
Merge tag 'glibc-2.28' into baseline-2.28baseline
The GNU C Library
=================
The GNU C Library version 2.28 is now available.
The GNU C Library is used as *the* C library in the GNU system and
in GNU/Linux systems, as well as many other systems that use Linux
as the kernel.
The GNU C Library is primarily designed to be a portable
and high performance C library. It follows all relevant
standards including ISO C11 and POSIX.1-2008. It is also
internationalized and has one of the most complete
internationalization interfaces known.
The GNU C Library webpage is at http://www.gnu.org/software/libc/
Packages for the 2.28 release may be downloaded from:
http://ftpmirror.gnu.org/libc/
http://ftp.gnu.org/gnu/libc/
The mirror list is at http://www.gnu.org/order/ftp.html
NEWS for version 2.28
=====================
Major new features:
* The localization data for ISO 14651 is updated to match the 2016
Edition 4 release of the standard, this matches data provided by
Unicode 9.0.0. This update introduces significant improvements to the
collation of Unicode characters. This release deviates slightly from
the standard in that the collation element ordering for lowercase and
uppercase LATIN script characters is adjusted to ensure that regular
expressions with ranges like [a-z] and [A-Z] don't interleave e.g. A
is not matched by [a-z]. With the update many locales have been
updated to take advantage of the new collation information. The new
collation information has increased the size of the compiled locale
archive or binary locales.
* The GNU C Library can now be compiled with support for Intel CET, AKA
Intel Control-flow Enforcement Technology. When the library is built
with --enable-cet, the resulting glibc is protected with indirect
branch tracking (IBT) and shadow stack (SHSTK). CET-enabled glibc is
compatible with all existing executables and shared libraries. This
feature is currently supported on i386, x86_64 and x32 with GCC 8 and
binutils 2.29 or later. Note that CET-enabled glibc requires CPUs
capable of multi-byte NOPs, like x86-64 processors as well as Intel
Pentium Pro or newer. NOTE: --enable-cet has been tested for i686,
x86_64 and x32 on non-CET processors. --enable-cet has been tested
for x86_64 and x32 on CET SDVs, but Intel CET support hasn't been
validated for i686.
* The GNU C Library now has correct support for ABSOLUTE symbols
(SHN_ABS-relative symbols). Previously such ABSOLUTE symbols were
relocated incorrectly or in some cases discarded. The GNU linker can
make use of the newer semantics, but it must communicate it to the
dynamic loader by setting the ELF file's identification (EI_ABIVERSION
field) to indicate such support is required.
* Unicode 11.0.0 Support: Character encoding, character type info, and
transliteration tables are all updated to Unicode 11.0.0, using
generator scripts contributed by Mike FABIAN (Red Hat).
* <math.h> functions that round their results to a narrower type are added
from TS 18661-1:2014 and TS 18661-3:2015:
- fadd, faddl, daddl and corresponding fMaddfN, fMaddfNx, fMxaddfN and
fMxaddfNx functions.
- fsub, fsubl, dsubl and corresponding fMsubfN, fMsubfNx, fMxsubfN and
fMxsubfNx functions.
- fmul, fmull, dmull and corresponding fMmulfN, fMmulfNx, fMxmulfN and
fMxmulfNx functions.
- fdiv, fdivl, ddivl and corresponding fMdivfN, fMdivfNx, fMxdivfN and
fMxdivfNx functions.
* Two grammatical forms of month names are now supported for the following
languages: Armenian, Asturian, Catalan, Czech, Kashubian, Occitan, Ossetian,
Scottish Gaelic, Upper Sorbian, and Walloon. The following languages now
support two grammatical forms in abbreviated month names: Catalan, Greek,
and Kashubian.
* Newly added locales: Lower Sorbian (dsb_DE) and Yakut (sah_RU) also
include the support for two grammatical forms of month names.
* Building and running on GNU/Hurd systems now works without out-of-tree
patches.
* The renameat2 function has been added, a variant of the renameat function
which has a flags argument. If the flags are zero, the renameat2 function
acts like renameat. If the flag is not zero and there is no kernel
support for renameat2, the function will fail with an errno value of
EINVAL. This is different from the existing gnulib function renameatu,
which performs a plain rename operation in case of a RENAME_NOREPLACE
flags and a non-existing destination (and therefore has a race condition
that can clobber the destination inadvertently).
* The statx function has been added, a variant of the fstatat64
function with an additional flags argument. If there is no direct
kernel support for statx, glibc provides basic stat support based on
the fstatat64 function.
* IDN domain names in getaddrinfo and getnameinfo now use the system libidn2
library if installed. libidn2 version 2.0.5 or later is recommended. If
libidn2 is not available, internationalized domain names are not encoded
or decoded even if the AI_IDN or NI_IDN flags are passed to getaddrinfo or
getnameinfo. (getaddrinfo calls with non-ASCII names and AI_IDN will fail
with an encoding error.) Flags which used to change the IDN encoding and
decoding behavior (AI_IDN_ALLOW_UNASSIGNED, AI_IDN_USE_STD3_ASCII_RULES,
NI_IDN_ALLOW_UNASSIGNED, NI_IDN_USE_STD3_ASCII_RULES) have been
deprecated. They no longer have any effect.
* Parsing of dynamic string tokens in DT_RPATH, DT_RUNPATH, DT_NEEDED,
DT_AUXILIARY, and DT_FILTER has been expanded to support the full
range of ELF gABI expressions including such constructs as
'$ORIGIN$ORIGIN' (if valid). For SUID/GUID applications the rules
have been further restricted, and where in the past a dynamic string
token sequence may have been interpreted as a literal string it will
now cause a load failure. These load failures were always considered
unspecified behaviour from the perspective of the dynamic loader, and
for safety are now load errors e.g. /foo/${ORIGIN}.so in DT_NEEDED
results in a load failure now.
* Support for ISO C threads (ISO/IEC 9899:2011) has been added. The
implementation includes all the standard functions provided by
<threads.h>:
- thrd_current, thrd_equal, thrd_sleep, thrd_yield, thrd_create,
thrd_detach, thrd_exit, and thrd_join for thread management.
- mtx_init, mtx_lock, mtx_timedlock, mtx_trylock, mtx_unlock, and
mtx_destroy for mutual exclusion.
- call_once for function call synchronization.
- cnd_broadcast, cnd_destroy, cnd_init, cnd_signal, cnd_timedwait, and
cnd_wait for conditional variables.
- tss_create, tss_delete, tss_get, and tss_set for thread-local storage.
Application developers must link against libpthread to use ISO C threads.
Deprecated and removed features, and other changes affecting compatibility:
* The nonstandard header files <libio.h> and <_G_config.h> are no longer
installed. Software that was using either header should be updated to
use standard <stdio.h> interfaces instead.
* The stdio functions 'getc' and 'putc' are no longer defined as macros.
This was never required by the C standard, and the macros just expanded
to call alternative names for the same functions. If you hoped getc and
putc would provide performance improvements over fgetc and fputc, instead
investigate using (f)getc_unlocked and (f)putc_unlocked, and, if
necessary, flockfile and funlockfile.
* All stdio functions now treat end-of-file as a sticky condition. If you
read from a file until EOF, and then the file is enlarged by another
process, you must call clearerr or another function with the same effect
(e.g. fseek, rewind) before you can read the additional data. This
corrects a longstanding C99 conformance bug. It is most likely to affect
programs that use stdio to read interactive input from a terminal.
(Bug #1190.)
* The macros 'major', 'minor', and 'makedev' are now only available from
the header <sys/sysmacros.h>; not from <sys/types.h> or various other
headers that happen to include <sys/types.h>. These macros are rarely
used, not part of POSIX nor XSI, and their names frequently collide with
user code; see https://sourceware.org/bugzilla/show_bug.cgi?id=19239 for
further explanation.
<sys/sysmacros.h> is a GNU extension. Portable programs that require
these macros should first include <sys/types.h>, and then include
<sys/sysmacros.h> if __GNU_LIBRARY__ is defined.
* The tilegx*-*-linux-gnu configurations are no longer supported.
* The obsolete function ustat is no longer available to newly linked
binaries; the headers <ustat.h> and <sys/ustat.h> have been removed. This
function has been deprecated in favor of fstatfs and statfs.
* The obsolete function nfsservctl is no longer available to newly linked
binaries. This function was specific to systems using the Linux kernel
and could not usefully be used with the GNU C Library on systems with
version 3.1 or later of the Linux kernel.
* The obsolete function name llseek is no longer available to newly linked
binaries. This function was specific to systems using the Linux kernel
and was not declared in a header. Programs should use the lseek64 name
for this function instead.
* The AI_IDN_ALLOW_UNASSIGNED and NI_IDN_ALLOW_UNASSIGNED flags for the
getaddrinfo and getnameinfo functions have been deprecated. The behavior
previously selected by them is now always enabled.
* The AI_IDN_USE_STD3_ASCII_RULES and NI_IDN_USE_STD3_ASCII_RULES flags for
the getaddrinfo and getnameinfo functions have been deprecated. The STD3
restriction (rejecting '_' in host names, among other things) has been
removed, for increased compatibility with non-IDN name resolution.
* The fcntl function now have a Long File Support variant named fcntl64. It
is added to fix some Linux Open File Description (OFD) locks usage on non
LFS mode. As for others *64 functions, fcntl64 semantics are analogous with
fcntl and LFS support is handled transparently. Also for Linux, the OFD
locks act as a cancellation entrypoint.
* The obsolete functions encrypt, encrypt_r, setkey, setkey_r, cbc_crypt,
ecb_crypt, and des_setparity are no longer available to newly linked
binaries, and the headers <rpc/des_crypt.h> and <rpc/rpc_des.h> are no
longer installed. These functions encrypted and decrypted data with the
DES block cipher, which is no longer considered secure. Software that
still uses these functions should switch to a modern cryptography library,
such as libgcrypt.
* Reflecting the removal of the encrypt and setkey functions above, the
macro _XOPEN_CRYPT is no longer defined. As a consequence, the crypt
function is no longer declared unless _DEFAULT_SOURCE or _GNU_SOURCE is
enabled.
* The obsolete function fcrypt is no longer available to newly linked
binaries. It was just another name for the standard function crypt,
and it has not appeared in any header file in many years.
* We have tentative plans to hand off maintenance of the passphrase-hashing
library, libcrypt, to a separate development project that will, we hope,
keep up better with new passphrase-hashing algorithms. We will continue
to declare 'crypt' in <unistd.h>, and programs that use 'crypt' or
'crypt_r' should not need to change at all; however, distributions will
need to install <crypt.h> and libcrypt from a separate project.
In this release, if the configure option --disable-crypt is used, glibc
will not install <crypt.h> or libcrypt, making room for the separate
project's versions of these files. The plan is to make this the default
behavior in a future release.
Changes to build and runtime requirements:
GNU make 4.0 or later is now required to build glibc.
Security related changes:
CVE-2016-6261, CVE-2016-6263, CVE-2017-14062: Various vulnerabilities have
been fixed by removing the glibc-internal IDNA implementation and using
the system-provided libidn2 library instead. Originally reported by Hanno
Böck and Christian Weisgerber.
CVE-2017-18269: An SSE2-based memmove implementation for the i386
architecture could corrupt memory. Reported by Max Horn.
CVE-2018-11236: Very long pathname arguments to realpath function could
result in an integer overflow and buffer overflow. Reported by Alexey
Izbyshev.
CVE-2018-11237: The mempcpy implementation for the Intel Xeon Phi
architecture could write beyond the target buffer, resulting in a buffer
overflow. Reported by Andreas Schwab.
The following bugs are resolved with this release:
[1190] stdio: fgetc()/fread() behaviour is not POSIX compliant
[6889] manual: 'PWD' mentioned but not specified
[13575] libc: SSIZE_MAX defined as LONG_MAX is inconsistent with ssize_t,
when __WORDSIZE != 64
[13762] regex: re_search etc. should return -2 on memory exhaustion
[13888] build: /tmp usage during testing
[13932] math: dbl-64 pow unexpectedly slow for some inputs
[14092] nptl: Support C11 threads
[14095] localedata: Review / update collation data from Unicode / ISO
14651
[14508] libc: -Wformat warnings
[14553] libc: Namespace pollution loff_t in sys/types.h
[14890] libc: Make NT_PRFPREG canonical.
[15105] libc: Extra PLT references with -Os
[15512] libc: __bswap_constant_16 not compiled when -Werror -Wsign-
conversion is given
[16335] manual: Feature test macro documentation incomplete and out of
date
[16552] libc: Unify umount implementations in terms of umount2
[17082] libc: htons et al.: statement-expressions prevent use on global
scope with -O1 and higher
[17343] libc: Signed integer overflow in /stdlib/random_r.c
[17438] localedata: pt_BR: wrong d_fmt delimiter
[17662] libc: please implement binding for the new renameat2 syscall
[17721] libc: __restrict defined as /* Ignore */ even in c11
[17979] libc: inconsistency between uchar.h and stdint.h
[18018] dynamic-link: Additional $ORIGIN handling issues (CVE-2011-0536)
[18023] libc: extend_alloca is broken (questionable pointer comparison,
horrible machine code)
[18124] libc: hppa: setcontext erroneously returns -1 as exit code for
last constant.
[18471] libc: llseek should be a compat symbol
[18473] soft-fp: [powerpc-nofpu] __sqrtsf2, __sqrtdf2 should be compat
symbols
[18991] nss: nss_files skips large entry in database
[19239] libc: Including stdlib.h ends up with macros major and minor being
defined
[19463] libc: linknamespace failures when compiled with -Os
[19485] localedata: csb_PL: Update month translations + add yesstr/nostr
[19527] locale: Normalized charset name not recognized by setlocale
[19667] string: Missing Sanity Check for malloc calls in file 'testcopy.c'
[19668] libc: Missing Sanity Check for malloc() in file 'tst-setcontext-
fpscr.c'
[19728] network: out of bounds stack read in libidn function
idna_to_ascii_4i (CVE-2016-6261)
[19729] network: out of bounds heap read on invalid utf-8 inputs in
stringprep_utf8_nfkc_normalize (CVE-2016-6263)
[19818] dynamic-link: Absolute (SHN_ABS) symbols incorrectly relocated by
the base address
[20079] libc: Add SHT_X86_64_UNWIND to elf.h
[20251] libc: 32bit programs pass garbage in struct flock for OFD locks
[20419] dynamic-link: files with large allocated notes crash in
open_verify
[20530] libc: bswap_16 should use __builtin_bswap16() when available
[20890] dynamic-link: ldconfig: fsync the files before atomic rename
[20980] manual: CFLAGS environment variable replaces vital options
[21163] regex: Assertion failure in pop_fail_stack when executing a
malformed regexp (CVE-2015-8985)
[21234] manual: use of CFLAGS makes glibc detect no optimization
[21269] dynamic-link: i386 sigaction sa_restorer handling is wrong
[21313] build: Compile Error GCC 5.4.0 MIPS with -0S
[21314] build: Compile Error GCC 5.2.0 MIPS with -0s
[21508] locale: intl/tst-gettext failure with latest msgfmt
[21547] localedata: Tibetan script collation broken (Dzongkha and Tibetan)
[21812] network: getifaddrs() returns entries with ifa_name == NULL
[21895] libc: ppc64 setjmp/longjmp not fully interoperable with static
dlopen
[21942] dynamic-link: _dl_dst_substitute incorrectly handles $ORIGIN: with
AT_SECURE=1
[22241] localedata: New locale: Yakut (Sakha) locale for Russia (sah_RU)
[22247] network: Integer overflow in the decode_digit function in
puny_decode.c in libidn (CVE-2017-14062)
[22342] nscd: NSCD not properly caching netgroup
[22391] nptl: Signal function clear NPTL internal symbols inconsistently
[22550] localedata: es_ES locale (and other es_* locales): collation
should treat ñ as a primary different character, sync the collation
for Spanish with CLDR
[22638] dynamic-link: sparc: static binaries are broken if glibc is built
by gcc configured with --enable-default-pie
[22639] time: year 2039 bug for localtime etc. on 64-bit platforms
[22644] string: memmove-sse2-unaligned on 32bit x86 produces garbage when
crossing 2GB threshold (CVE-2017-18269)
[22646] localedata: redundant data (LC_TIME) for es_CL, es_CU, es_EC and
es_BO
[22735] time: Misleading typo in time.h source comment regarding
CLOCKS_PER_SECOND
[22753] libc: preadv2/pwritev2 fallback code should handle offset=-1
[22761] libc: No trailing `%n' conversion specifier in FMT passed from
`__assert_perror_fail ()' to `__assert_fail_base ()'
[22766] libc: all glibc internal dlopen should use RTLD_NOW for robust
dlopen failures
[22786] libc: Stack buffer overflow in realpath() if input size is close
to SSIZE_MAX (CVE-2018-11236)
[22787] dynamic-link: _dl_check_caller returns false when libc is linked
through an absolute DT_NEEDED path
[22792] build: tcb-offsets.h dependency dropped
[22797] libc: pkey_get() uses non-reserved name of argument
[22807] libc: PTRACE_* constants missing for powerpc
[22818] glob: posix/tst-glob_lstat_compat failure on alpha
[22827] dynamic-link: RISC-V ELF64 parser mis-reads flag in ldconfig
[22830] malloc: malloc_stats doesn't restore cancellation state on stderr
[22848] localedata: ca_ES: update date definitions from CLDR
[22862] build: _DEFAULT_SOURCE is defined even when _ISOC11_SOURCE is
[22884] math: RISCV fmax/fmin handle signalling NANs incorrectly
[22896] localedata: Update locale data for an_ES
[22902] math: float128 test failures with GCC 8
[22918] libc: multiple common of `__nss_shadow_database'
[22919] libc: sparc32: backtrace yields infinite backtrace with
makecontext
[22926] libc: FTBFS on powerpcspe
[22932] localedata: lt_LT: Update of abbreviated month names from CLDR
required
[22937] localedata: Greek (el_GR, el_CY) locales actually need ab_alt_mon
[22947] libc: FAIL: misc/tst-preadvwritev2
[22963] localedata: cs_CZ: Add alternative month names
[22987] math: [powerpc/sparc] fdim inlines errno, exceptions handling
[22996] localedata: change LC_PAPER to en_US in es_BO locale
[22998] dynamic-link: execstack tests are disabled when SELinux is
disabled
[23005] network: Crash in __res_context_send after memory allocation
failure
[23007] math: strtod cannot handle -nan
[23024] nss: getlogin_r is performing NSS lookups when loginid isn't set
[23036] regex: regex equivalence class regression
[23037] libc: initialize msg_flags to zero for sendmmsg() calls
[23069] libc: sigaction broken on riscv64-linux-gnu
[23094] localedata: hr_HR: wrong thousands_sep and mon_thousands_sep
[23102] dynamic-link: Incorrect parsing of multiple consecutive $variable
patterns in runpath entries (e.g. $ORIGIN$ORIGIN)
[23137] nptl: s390: pthread_join sometimes block indefinitely (on 31bit
and libc build with -Os)
[23140] localedata: More languages need two forms of month names
[23145] libc: _init/_fini aren't marked as hidden
[23152] localedata: gd_GB: Fix typo in "May" (abbreviated)
[23171] math: C++ iseqsig for long double converts arguments to double
[23178] nscd: sudo will fail when it is run in concurrent with commands
that changes /etc/passwd
[23196] string: __mempcpy_avx512_no_vzeroupper mishandles large copies
(CVE-2018-11237)
[23206] dynamic-link: static-pie + dlopen breaks debugger interaction
[23208] localedata: New locale - Lower Sorbian (dsb)
[23233] regex: Memory leak in build_charclass_op function in file
posix/regcomp.c
[23236] stdio: Harden function pointers in _IO_str_fields
[23250] nptl: Offset of __private_ss differs from GCC
[23253] math: tgamma test suite failures on i686 with -march=x86-64
-mtune=generic -mfpmath=sse
[23259] dynamic-link: Unsubstituted ${ORIGIN} remains in DT_NEEDED for
AT_SECURE
[23264] libc: posix_spawnp wrongly executes ENOEXEC in non compat mode
[23266] nis: stringop-truncation warning with new gcc8.1 in nisplus-
parser.c
[23272] math: fma(INFINITY,INFIITY,0.0) should be INFINITY
[23277] math: nan function should not have const attribute
[23279] math: scanf and strtod wrong for some hex floating-point
[23280] math: wscanf rounds wrong; wcstod is ok for negative numbers and
directed rounding
[23290] localedata: IBM273 is not equivalent to ISO-8859-1
[23303] build: undefined reference to symbol
'__parse_hwcap_and_convert_at_platform@@GLIBC_2.23'
[23307] dynamic-link: Absolute symbols whose value is zero ignored in
lookup
[23313] stdio: libio vtables validation and standard file object
interposition
[23329] libc: The __libc_freeres infrastructure is not properly run across
DSO boundaries.
[23349] libc: Various glibc headers no longer compatible with
<linux/time.h>
[23351] malloc: Remove unused code related to heap dumps and malloc
checking
[23363] stdio: stdio-common/tst-printf.c has non-free license
[23396] regex: Regex equivalence regression in single-byte locales
[23422] localedata: oc_FR: More updates of locale data
[23442] build: New warning with GCC 8
[23448] libc: Out of bounds access in IBM-1390 converter
[23456] libc: Wrong index_cpu_LZCNT
[23458] build: tst-get-cpu-features-static isn't added to tests
[23459] libc: COMMON_CPUID_INDEX_80000001 isn't populated for Intel
processors
[23467] dynamic-link: x86/CET: A property note parser bug
Release Notes
=============
https://sourceware.org/glibc/wiki/Release/2.28
Contributors
============
This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports. These include:
Adhemerval Zanella
Agustina Arzille
Alan Modra
Alexandre Oliva
Amit Pawar
Andreas Schwab
Andrew Senkevich
Andrew Waterman
Aurelien Jarno
Carlos O'Donell
Chung-Lin Tang
DJ Delorie
Daniel Alvarez
David Michael
Dmitry V. Levin
Dragan Stanojevic - Nevidljivi
Florian Weimer
Flávio Cruz
Francois Goichon
Gabriel F. T. Gomes
H.J. Lu
Herman ten Brugge
Hongbo Zhang
Igor Gnatenko
Jesse Hathaway
John David Anglin
Joseph Myers
Leonardo Sandoval
Maciej W. Rozycki
Mark Wielaard
Martin Sebor
Michael Wolf
Mike FABIAN
Patrick McGehearty
Patsy Franklin
Paul Pluzhnikov
Quentin PAGÈS
Rafal Luzynski
Rajalakshmi Srinivasaraghavan
Raymond Nicholson
Rical Jasan
Richard Braun
Robert Buj
Rogerio Alves
Samuel Thibault
Sean McKean
Siddhesh Poyarekar
Stefan Liebler
Steve Ellcey
Sylvain Lesage
Szabolcs Nagy
Thomas Schwinge
Tulio Magno Quites Machado Filho
Valery Timiriliyev
Vincent Chen
Wilco Dijkstra
Zack Weinberg
Zong Li
Diffstat (limited to 'posix/regex.h')
| -rw-r--r-- | posix/regex.h | 337 |
1 files changed, 207 insertions, 130 deletions
diff --git a/posix/regex.h b/posix/regex.h index 90f0851790..32933bc6d5 100644 --- a/posix/regex.h +++ b/posix/regex.h @@ -1,6 +1,6 @@ /* Definitions for data structures and routines for the regular expression library. - Copyright (C) 1985, 1989-2016 Free Software Foundation, Inc. + Copyright (C) 1985, 1989-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -15,7 +15,7 @@ You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ + <https://www.gnu.org/licenses/>. */ #ifndef _REGEX_H #define _REGEX_H 1 @@ -27,6 +27,36 @@ extern "C" { #endif +/* Define __USE_GNU to declare GNU extensions that violate the + POSIX name space rules. */ +#ifdef _GNU_SOURCE +# define __USE_GNU 1 +#endif + +#ifdef _REGEX_LARGE_OFFSETS + +/* Use types and values that are wide enough to represent signed and + unsigned byte offsets in memory. This currently works only when + the regex code is used outside of the GNU C library; it is not yet + supported within glibc itself, and glibc users should not define + _REGEX_LARGE_OFFSETS. */ + +/* The type of object sizes. */ +typedef size_t __re_size_t; + +/* The type of object sizes, in places where the traditional code + uses unsigned long int. */ +typedef size_t __re_long_size_t; + +#else + +/* The traditional GNU regex implementation mishandles strings longer + than INT_MAX. */ +typedef unsigned int __re_size_t; +typedef unsigned long int __re_long_size_t; + +#endif + /* The following two types have to be signed and unsigned integer type wide enough to hold a value of a pointer. For most ANSI compilers ptrdiff_t and size_t should be likely OK. Still size of these two @@ -108,9 +138,9 @@ typedef unsigned long int reg_syntax_t; If not set, newline is literal. */ # define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1) -/* If this bit is set, then `{...}' defines an interval, and \{ and \} +/* If this bit is set, then '{...}' defines an interval, and \{ and \} are literals. - If not set, then `\{...\}' defines an interval. */ + If not set, then '\{...\}' defines an interval. */ # define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1) /* If this bit is set, (...) defines a group, and \( and \) are literals. @@ -165,8 +195,8 @@ typedef unsigned long int reg_syntax_t; whether ^ should be special. */ # define RE_CARET_ANCHORS_HERE (RE_ICASE << 1) -/* If this bit is set, then \{ cannot be first in an bre or - immediately after an alternation or begin-group operator. */ +/* If this bit is set, then \{ cannot be first in a regex or + immediately after an alternation, open-group or \} operator. */ # define RE_CONTEXT_INVALID_DUP (RE_CARET_ANCHORS_HERE << 1) /* If this bit is set, then no_sub will be set to 1 during @@ -185,9 +215,9 @@ extern reg_syntax_t re_syntax_options; (The [[[ comments delimit what gets put into the Texinfo file, so don't delete them!) */ /* [[[begin syntaxes]]] */ -#define RE_SYNTAX_EMACS 0 +# define RE_SYNTAX_EMACS 0 -#define RE_SYNTAX_AWK \ +# define RE_SYNTAX_AWK \ (RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DOT_NOT_NULL \ | RE_NO_BK_PARENS | RE_NO_BK_REFS \ | RE_NO_BK_VBAR | RE_NO_EMPTY_RANGES \ @@ -195,52 +225,49 @@ extern reg_syntax_t re_syntax_options; | RE_CHAR_CLASSES \ | RE_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS) -#define RE_SYNTAX_GNU_AWK \ +# define RE_SYNTAX_GNU_AWK \ ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS \ | RE_INVALID_INTERVAL_ORD) \ & ~(RE_DOT_NOT_NULL | RE_CONTEXT_INDEP_OPS \ | RE_CONTEXT_INVALID_OPS )) -#define RE_SYNTAX_POSIX_AWK \ +# define RE_SYNTAX_POSIX_AWK \ (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS \ | RE_INTERVALS | RE_NO_GNU_OPS \ | RE_INVALID_INTERVAL_ORD) -#define RE_SYNTAX_GREP \ - (RE_BK_PLUS_QM | RE_CHAR_CLASSES \ - | RE_HAT_LISTS_NOT_NEWLINE | RE_INTERVALS \ - | RE_NEWLINE_ALT) +# define RE_SYNTAX_GREP \ + ((RE_SYNTAX_POSIX_BASIC | RE_NEWLINE_ALT) \ + & ~(RE_CONTEXT_INVALID_DUP | RE_DOT_NOT_NULL)) -#define RE_SYNTAX_EGREP \ - (RE_CHAR_CLASSES | RE_CONTEXT_INDEP_ANCHORS \ - | RE_CONTEXT_INDEP_OPS | RE_HAT_LISTS_NOT_NEWLINE \ - | RE_NEWLINE_ALT | RE_NO_BK_PARENS \ - | RE_NO_BK_VBAR) +# define RE_SYNTAX_EGREP \ + ((RE_SYNTAX_POSIX_EXTENDED | RE_INVALID_INTERVAL_ORD | RE_NEWLINE_ALT) \ + & ~(RE_CONTEXT_INVALID_OPS | RE_DOT_NOT_NULL)) -#define RE_SYNTAX_POSIX_EGREP \ - (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES \ - | RE_INVALID_INTERVAL_ORD) +/* POSIX grep -E behavior is no longer incompatible with GNU. */ +# define RE_SYNTAX_POSIX_EGREP \ + RE_SYNTAX_EGREP /* P1003.2/D11.2, section 4.20.7.1, lines 5078ff. */ -#define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC +# define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC -#define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC +# define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC /* Syntax bits common to both basic and extended POSIX regex syntax. */ -#define _RE_SYNTAX_POSIX_COMMON \ +# define _RE_SYNTAX_POSIX_COMMON \ (RE_CHAR_CLASSES | RE_DOT_NEWLINE | RE_DOT_NOT_NULL \ | RE_INTERVALS | RE_NO_EMPTY_RANGES) -#define RE_SYNTAX_POSIX_BASIC \ +# define RE_SYNTAX_POSIX_BASIC \ (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM | RE_CONTEXT_INVALID_DUP) /* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes RE_LIMITED_OPS, i.e., \? \+ \| are not recognized. Actually, this isn't minimal, since other operators, such as \`, aren't disabled. */ -#define RE_SYNTAX_POSIX_MINIMAL_BASIC \ +# define RE_SYNTAX_POSIX_MINIMAL_BASIC \ (_RE_SYNTAX_POSIX_COMMON | RE_LIMITED_OPS) -#define RE_SYNTAX_POSIX_EXTENDED \ +# define RE_SYNTAX_POSIX_EXTENDED \ (_RE_SYNTAX_POSIX_COMMON | RE_CONTEXT_INDEP_ANCHORS \ | RE_CONTEXT_INDEP_OPS | RE_NO_BK_BRACES \ | RE_NO_BK_PARENS | RE_NO_BK_VBAR \ @@ -248,25 +275,35 @@ extern reg_syntax_t re_syntax_options; /* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INDEP_OPS is removed and RE_NO_BK_REFS is added. */ -#define RE_SYNTAX_POSIX_MINIMAL_EXTENDED \ +# define RE_SYNTAX_POSIX_MINIMAL_EXTENDED \ (_RE_SYNTAX_POSIX_COMMON | RE_CONTEXT_INDEP_ANCHORS \ | RE_CONTEXT_INVALID_OPS | RE_NO_BK_BRACES \ | RE_NO_BK_PARENS | RE_NO_BK_REFS \ | RE_NO_BK_VBAR | RE_UNMATCHED_RIGHT_PAREN_ORD) /* [[[end syntaxes]]] */ - -/* Maximum number of duplicates an interval can allow. Some systems - (erroneously) define this in other header files, but we want our + +/* Maximum number of duplicates an interval can allow. POSIX-conforming + systems might define this in <limits.h>, but we want our value, so remove any previous define. */ +# ifdef _REGEX_INCLUDE_LIMITS_H +# include <limits.h> +# endif # ifdef RE_DUP_MAX # undef RE_DUP_MAX # endif -/* If sizeof(int) == 2, then ((1 << 15) - 1) overflows. */ + +/* RE_DUP_MAX is 2**15 - 1 because an earlier implementation stored + the counter as a 2-byte signed integer. This is no longer true, so + RE_DUP_MAX could be increased to (INT_MAX / 10 - 1), or to + ((SIZE_MAX - 9) / 10) if _REGEX_LARGE_OFFSETS is defined. + However, there would be a huge performance problem if someone + actually used a pattern like a\{214748363\}, so RE_DUP_MAX retains + its historical value. */ # define RE_DUP_MAX (0x7fff) #endif -/* POSIX `cflags' bits (i.e., information for `regcomp'). */ +/* POSIX 'cflags' bits (i.e., information for 'regcomp'). */ /* If this bit is set, then use extended regular expression syntax. If not set, then use basic regular expression syntax. */ @@ -274,19 +311,19 @@ extern reg_syntax_t re_syntax_options; /* If this bit is set, then ignore case when matching. If not set, then case is significant. */ -#define REG_ICASE (REG_EXTENDED << 1) +#define REG_ICASE (1 << 1) /* If this bit is set, then anchors do not match at newline characters in the string. If not set, then anchors do match at newlines. */ -#define REG_NEWLINE (REG_ICASE << 1) +#define REG_NEWLINE (1 << 2) /* If this bit is set, then report only success or fail in regexec. If not set, then returns differ between not matching and errors. */ -#define REG_NOSUB (REG_NEWLINE << 1) +#define REG_NOSUB (1 << 3) -/* POSIX `eflags' bits (i.e., information for regexec). */ +/* POSIX 'eflags' bits (i.e., information for regexec). */ /* If this bit is set, then the beginning-of-line operator doesn't match the beginning of the string (presumably because it's not the @@ -304,41 +341,60 @@ extern reg_syntax_t re_syntax_options; /* If any error codes are removed, changed, or added, update the - `re_error_msg' table in regex.c. */ + '__re_error_msgid' table in regcomp.c. */ + typedef enum { -#if defined _XOPEN_SOURCE || defined __USE_XOPEN2K - REG_ENOSYS = -1, /* This will never happen for this implementation. */ -#endif - - REG_NOERROR = 0, /* Success. */ - REG_NOMATCH, /* Didn't find a match (for regexec). */ + _REG_ENOSYS = -1, /* This will never happen for this implementation. */ + _REG_NOERROR = 0, /* Success. */ + _REG_NOMATCH, /* Didn't find a match (for regexec). */ /* POSIX regcomp return error codes. (In the order listed in the standard.) */ - REG_BADPAT, /* Invalid pattern. */ - REG_ECOLLATE, /* Inalid collating element. */ - REG_ECTYPE, /* Invalid character class name. */ - REG_EESCAPE, /* Trailing backslash. */ - REG_ESUBREG, /* Invalid back reference. */ - REG_EBRACK, /* Unmatched left bracket. */ - REG_EPAREN, /* Parenthesis imbalance. */ - REG_EBRACE, /* Unmatched \{. */ - REG_BADBR, /* Invalid contents of \{\}. */ - REG_ERANGE, /* Invalid range end. */ - REG_ESPACE, /* Ran out of memory. */ - REG_BADRPT, /* No preceding re for repetition op. */ + _REG_BADPAT, /* Invalid pattern. */ + _REG_ECOLLATE, /* Invalid collating element. */ + _REG_ECTYPE, /* Invalid character class name. */ + _REG_EESCAPE, /* Trailing backslash. */ + _REG_ESUBREG, /* Invalid back reference. */ + _REG_EBRACK, /* Unmatched left bracket. */ + _REG_EPAREN, /* Parenthesis imbalance. */ + _REG_EBRACE, /* Unmatched \{. */ + _REG_BADBR, /* Invalid contents of \{\}. */ + _REG_ERANGE, /* Invalid range end. */ + _REG_ESPACE, /* Ran out of memory. */ + _REG_BADRPT, /* No preceding re for repetition op. */ /* Error codes we've added. */ - REG_EEND, /* Premature end. */ - REG_ESIZE, /* Compiled pattern bigger than 2^16 bytes. */ - REG_ERPAREN /* Unmatched ) or \); not returned from regcomp. */ + _REG_EEND, /* Premature end. */ + _REG_ESIZE, /* Too large (e.g., repeat count too large). */ + _REG_ERPAREN /* Unmatched ) or \); not returned from regcomp. */ } reg_errcode_t; + +#if defined _XOPEN_SOURCE || defined __USE_XOPEN2K +# define REG_ENOSYS _REG_ENOSYS +#endif +#define REG_NOERROR _REG_NOERROR +#define REG_NOMATCH _REG_NOMATCH +#define REG_BADPAT _REG_BADPAT +#define REG_ECOLLATE _REG_ECOLLATE +#define REG_ECTYPE _REG_ECTYPE +#define REG_EESCAPE _REG_EESCAPE +#define REG_ESUBREG _REG_ESUBREG +#define REG_EBRACK _REG_EBRACK +#define REG_EPAREN _REG_EPAREN +#define REG_EBRACE _REG_EBRACE +#define REG_BADBR _REG_BADBR +#define REG_ERANGE _REG_ERANGE +#define REG_ESPACE _REG_ESPACE +#define REG_BADRPT _REG_BADRPT +#define REG_EEND _REG_EEND +#define REG_ESIZE _REG_ESIZE +#define REG_ERPAREN _REG_ERPAREN /* This data structure represents a compiled pattern. Before calling - the pattern compiler, the fields `buffer', `allocated', `fastmap', - and `translate' can be set. After the pattern has been compiled, - the fields `re_nsub', `not_bol' and `not_eol' are available. All + the pattern compiler, the fields 'buffer', 'allocated', 'fastmap', + and 'translate' can be set. After the pattern has been compiled, + the fields 're_nsub', 'not_bol' and 'not_eol' are available. All other fields are private to the regex routines. */ #ifndef RE_TRANSLATE_TYPE @@ -356,16 +412,15 @@ typedef enum struct re_pattern_buffer { - /* Space that holds the compiled pattern. It is declared as - `unsigned char *' because its elements are sometimes used as - array indexes. */ - unsigned char *__REPB_PREFIX(buffer); + /* Space that holds the compiled pattern. The type + 'struct re_dfa_t' is private and is not declared here. */ + struct re_dfa_t *__REPB_PREFIX(buffer); - /* Number of bytes to which `buffer' points. */ - unsigned long int __REPB_PREFIX(allocated); + /* Number of bytes to which 'buffer' points. */ + __re_long_size_t __REPB_PREFIX(allocated); - /* Number of bytes actually used in `buffer'. */ - unsigned long int __REPB_PREFIX(used); + /* Number of bytes actually used in 'buffer'. */ + __re_long_size_t __REPB_PREFIX(used); /* Syntax setting with which the pattern was compiled. */ reg_syntax_t __REPB_PREFIX(syntax); @@ -385,13 +440,13 @@ struct re_pattern_buffer size_t re_nsub; /* Zero if this pattern cannot match the empty string, one else. - Well, in truth it's used only in `re_search_2', to see whether or + Well, in truth it's used only in 're_search_2', to see whether or not we should use the fastmap, so we don't set this absolutely - perfectly; see `re_compile_fastmap' (the `duplicate' case). */ + perfectly; see 're_compile_fastmap' (the "duplicate" case). */ unsigned __REPB_PREFIX(can_be_null) : 1; - /* If REGS_UNALLOCATED, allocate space in the `regs' structure - for `max (RE_NREGS, re_nsub + 1)' groups. + /* If REGS_UNALLOCATED, allocate space in the 'regs' structure + for 'max (RE_NREGS, re_nsub + 1)' groups. If REGS_REALLOCATE, reallocate space if necessary. If REGS_FIXED, use what's there. */ #ifdef __USE_GNU @@ -401,11 +456,11 @@ struct re_pattern_buffer #endif unsigned __REPB_PREFIX(regs_allocated) : 2; - /* Set to zero when `regex_compile' compiles a pattern; set to one - by `re_compile_fastmap' if it updates the fastmap. */ + /* Set to zero when 're_compile_pattern' compiles a pattern; set to + one by 're_compile_fastmap' if it updates the fastmap. */ unsigned __REPB_PREFIX(fastmap_accurate) : 1; - /* If set, `re_match_2' does not return information about + /* If set, 're_match_2' does not return information about subexpressions. */ unsigned __REPB_PREFIX(no_sub) : 1; @@ -423,7 +478,17 @@ struct re_pattern_buffer typedef struct re_pattern_buffer regex_t; /* Type for byte offsets within the string. POSIX mandates this. */ +#ifdef _REGEX_LARGE_OFFSETS +/* POSIX 1003.1-2008 requires that regoff_t be at least as wide as + ptrdiff_t and ssize_t. We don't know of any hosts where ptrdiff_t + is wider than ssize_t, so ssize_t is safe. ptrdiff_t is not + visible here, so use ssize_t. */ +typedef ssize_t regoff_t; +#else +/* The traditional GNU regex implementation mishandles strings longer + than INT_MAX. */ typedef int regoff_t; +#endif #ifdef __USE_GNU @@ -431,15 +496,15 @@ typedef int regoff_t; regex.texinfo for a full description of what registers match. */ struct re_registers { - unsigned num_regs; + __re_size_t num_regs; regoff_t *start; regoff_t *end; }; -/* If `regs_allocated' is REGS_UNALLOCATED in the pattern buffer, - `re_match_2' returns information about at least this many registers - the first time a `regs' structure is passed. */ +/* If 'regs_allocated' is REGS_UNALLOCATED in the pattern buffer, + 're_match_2' returns information about at least this many registers + the first time a 'regs' structure is passed. */ # ifndef RE_NREGS # define RE_NREGS 30 # endif @@ -447,7 +512,7 @@ struct re_registers /* POSIX specification for registers. Aside from the different names than - `re_registers', POSIX uses an array of structures, instead of a + 're_registers', POSIX uses an array of structures, instead of a structure of arrays. */ typedef struct { @@ -459,17 +524,17 @@ typedef struct #ifdef __USE_GNU /* Sets the current default syntax to SYNTAX, and return the old syntax. - You can also simply assign to the `re_syntax_options' variable. */ + You can also simply assign to the 're_syntax_options' variable. */ extern reg_syntax_t re_set_syntax (reg_syntax_t __syntax); /* Compile the regular expression PATTERN, with length LENGTH - and syntax given by the global `re_syntax_options', into the buffer + and syntax given by the global 're_syntax_options', into the buffer BUFFER. Return NULL if successful, and an error string if not. - To free the allocated storage, you must call `regfree' on BUFFER. - Note that the translate table must either have been initialised by - `regcomp', with a malloc'ed value, or set to NULL before calling - `regfree'. */ + To free the allocated storage, you must call 'regfree' on BUFFER. + Note that the translate table must either have been initialized by + 'regcomp', with a malloc'ed value, or set to NULL before calling + 'regfree'. */ extern const char *re_compile_pattern (const char *__pattern, size_t __length, struct re_pattern_buffer *__buffer); @@ -485,47 +550,52 @@ extern int re_compile_fastmap (struct re_pattern_buffer *__buffer); characters. Return the starting position of the match, -1 for no match, or -2 for an internal error. Also return register information in REGS (if REGS and BUFFER->no_sub are nonzero). */ -extern int re_search (struct re_pattern_buffer *__buffer, const char *__string, - int __length, int __start, int __range, - struct re_registers *__regs); +extern regoff_t re_search (struct re_pattern_buffer *__buffer, + const char *__String, regoff_t __length, + regoff_t __start, regoff_t __range, + struct re_registers *__regs); -/* Like `re_search', but search in the concatenation of STRING1 and +/* Like 're_search', but search in the concatenation of STRING1 and STRING2. Also, stop searching at index START + STOP. */ -extern int re_search_2 (struct re_pattern_buffer *__buffer, - const char *__string1, int __length1, - const char *__string2, int __length2, int __start, - int __range, struct re_registers *__regs, int __stop); +extern regoff_t re_search_2 (struct re_pattern_buffer *__buffer, + const char *__string1, regoff_t __length1, + const char *__string2, regoff_t __length2, + regoff_t __start, regoff_t __range, + struct re_registers *__regs, + regoff_t __stop); -/* Like `re_search', but return how many characters in STRING the regexp +/* Like 're_search', but return how many characters in STRING the regexp in BUFFER matched, starting at position START. */ -extern int re_match (struct re_pattern_buffer *__buffer, const char *__string, - int __length, int __start, struct re_registers *__regs); +extern regoff_t re_match (struct re_pattern_buffer *__buffer, + const char *__String, regoff_t __length, + regoff_t __start, struct re_registers *__regs); -/* Relates to `re_match' as `re_search_2' relates to `re_search'. */ -extern int re_match_2 (struct re_pattern_buffer *__buffer, - const char *__string1, int __length1, - const char *__string2, int __length2, int __start, - struct re_registers *__regs, int __stop); +/* Relates to 're_match' as 're_search_2' relates to 're_search'. */ +extern regoff_t re_match_2 (struct re_pattern_buffer *__buffer, + const char *__string1, regoff_t __length1, + const char *__string2, regoff_t __length2, + regoff_t __start, struct re_registers *__regs, + regoff_t __stop); /* Set REGS to hold NUM_REGS registers, storing them in STARTS and ENDS. Subsequent matches using BUFFER and REGS will use this memory for recording register information. STARTS and ENDS must be - allocated with malloc, and must each be at least `NUM_REGS * sizeof + allocated with malloc, and must each be at least 'NUM_REGS * sizeof (regoff_t)' bytes long. If NUM_REGS == 0, then subsequent matches should allocate their own register data. Unless this function is called, the first search or match using - PATTERN_BUFFER will allocate its own register data, without + BUFFER will allocate its own register data, without freeing the old data. */ extern void re_set_registers (struct re_pattern_buffer *__buffer, struct re_registers *__regs, - unsigned int __num_regs, + __re_size_t __num_regs, regoff_t *__starts, regoff_t *__ends); #endif /* Use GNU */ @@ -537,39 +607,46 @@ extern int re_exec (const char *); # endif #endif -/* GCC 2.95 and later have "__restrict"; C99 compilers have - "restrict", and "configure" may have defined "restrict". */ -#ifndef __restrict -# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__)) -# if defined restrict || 199901L <= __STDC_VERSION__ -# define __restrict restrict -# else -# define __restrict -# endif +/* For plain 'restrict', use glibc's __restrict if defined. + Otherwise, GCC 2.95 and later have "__restrict"; C99 compilers have + "restrict", and "configure" may have defined "restrict". + Other compilers use __restrict, __restrict__, and _Restrict, and + 'configure' might #define 'restrict' to those words, so pick a + different name. */ +#ifndef _Restrict_ +# if defined __restrict || 2 < __GNUC__ + (95 <= __GNUC_MINOR__) +# define _Restrict_ __restrict +# elif 199901L <= __STDC_VERSION__ || defined restrict +# define _Restrict_ restrict +# else +# define _Restrict_ # endif #endif -/* gcc 3.1 and up support the [restrict] syntax. */ -#ifndef __restrict_arr -# if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) \ - && !defined __GNUG__ -# define __restrict_arr __restrict +/* For [restrict], use glibc's __restrict_arr if available. + Otherwise, GCC 3.1 (not in C++ mode) and C99 support [restrict]. */ +#ifndef _Restrict_arr_ +# ifdef __restrict_arr +# define _Restrict_arr_ __restrict_arr +# elif ((199901L <= __STDC_VERSION__ || 3 < __GNUC__ + (1 <= __GNUC_MINOR__)) \ + && !defined __GNUG__) +# define _Restrict_arr_ _Restrict_ # else -# define __restrict_arr +# define _Restrict_arr_ # endif #endif /* POSIX compatibility. */ -extern int regcomp (regex_t *__restrict __preg, - const char *__restrict __pattern, +extern int regcomp (regex_t *_Restrict_ __preg, + const char *_Restrict_ __pattern, int __cflags); -extern int regexec (const regex_t *__restrict __preg, - const char *__restrict __string, size_t __nmatch, - regmatch_t __pmatch[__restrict_arr], +extern int regexec (const regex_t *_Restrict_ __preg, + const char *_Restrict_ __String, size_t __nmatch, + regmatch_t __pmatch[_Restrict_arr_], int __eflags); -extern size_t regerror (int __errcode, const regex_t *__restrict __preg, - char *__restrict __errbuf, size_t __errbuf_size); +extern size_t regerror (int __errcode, const regex_t *_Restrict_ __preg, + char *_Restrict_ __errbuf, size_t __errbuf_size); extern void regfree (regex_t *__preg); |