1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2017 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * Unicode 9.0.0 Support: Character encoding, character type info, and
11 transliteration tables are all updated to Unicode 9.0.0, using
12 generator scripts contributed by Mike FABIAN (Red Hat).
14 * The rpcgen, librpcsvc and related headers will only be built and
15 installed when glibc is configured with --enable-obsolete-rpc.
16 This allows alternative RPC implementations, like TIRPC, to be used
17 by default. Applications needing features missing from TIRPC should
18 consider the rpcsvc-proto project developed by Thorsten Kukuk (SUSE).
20 * The NIS(+) name service modules, libnss_nis, libnss_nisplus, and
21 libnss_compat, are deprecated, and will not be built or installed by
22 default. Replacement implementations based on TIRPC, which
23 additionally support IPv6, are available from
24 <https://github.com/thkukuk/libnss_{compat,nis,nisplus}>.
26 * The NIS(+) support library, libnsl, is deprecated. By default, a
27 compatibility shared library will be built and installed, but not
28 headers or development libraries.
30 Only a few NIS-related programs require this library.
31 A replacement implementation based on TIRPC is available from
32 <https://github.com/thkukuk/libnsl>. Like the replacement NIS(+)
33 name service modules, the replacement supports IPv6, and it can be
34 coinstalled with the compatibility shared library from glibc.
36 * New configure option --enable-obsolete-nsl will cause libnsl's
37 headers, and the NIS(+) name service modules, to be built and
38 installed. This option may be removed in a future release.
40 Security related changes:
42 [Add security related changes here]
44 The following bugs are resolved with this release:
46 [The release manager will add the list generated by
47 scripts/list-fixed-bugs.py just before the release.]
52 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
53 24731-2:2010, is supported to enable declarations of functions from that
54 TR. Note that not all functions from that TR are supported by the GNU C
57 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
58 18661-1:2014, is supported to enable declarations of functions and macros
59 from that TS. Note that not all features from that TS are supported by
62 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
63 18661-4:2015, is supported to enable declarations of functions and macros
64 from that TS. Note that most features from that TS are not supported by
67 * The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
68 now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
69 Since the GNU C Library defaults to a much newer revision of POSIX, this
70 will only affect programs that specifically request an old conformance
71 mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
72 see a change in the visible declarations, but a program compiled with
73 just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
76 Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
77 defined by all multithreaded code, but glibc has not required this for
80 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
81 means that in a future release, the macros “major”, “minor”, and “makedev”
82 will only be available from <sys/sysmacros.h>.
84 These macros are not part of POSIX nor XSI, and their names frequently
85 collide with user code; see for instance glibc bug 19239 and Red Hat bug
86 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
87 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
90 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
91 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
92 femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
94 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
95 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
96 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
97 <stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
98 INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
99 UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
100 INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
101 UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
102 UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
103 UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
104 UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
107 * New <math.h> features are added from TS 18661-1:2014:
109 - Signaling NaN macros: SNANF, SNAN, SNANL.
111 - Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
112 fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
113 fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
115 - llogb functions: the llogb, llogbf and llogbl functions, and the
116 FP_LLOGB0 and FP_LLOGBNAN macros.
118 - Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
121 - Comparison macros: iseqsig.
123 - Classification macros: iscanonical, issubnormal, iszero.
125 - Total order functions: totalorder, totalorderf, totalorderl,
126 totalordermag, totalordermagf, totalordermagl.
128 - Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
130 - NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
131 setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
133 * The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
134 are added to libc. They convert a floating-point number into string.
136 * Most of glibc can now be built with the stack smashing protector enabled.
137 It is recommended to build glibc with --enable-stack-protector=strong.
138 Implemented by Nick Alcock (Oracle).
140 * The function explicit_bzero, from OpenBSD, has been added to libc. It is
141 intended to be used instead of memset() to erase sensitive data after use;
142 the compiler will not optimize out calls to explicit_bzero even if they
143 are "unnecessary" (in the sense that no _correct_ program can observe the
144 effects of the memory clear).
146 * On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
147 to float instead of double. This does not affect the ABI of any libraries
148 that are part of the GNU C Library, but may affect the ABI of other
149 libraries that use this type in their interfaces.
151 * On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
152 float_t and double_t types are now defined to long double instead of float
153 and double. These options are not the default, and this does not affect
154 the ABI of any libraries that are part of the GNU C Library, but it may
155 affect the ABI of other libraries that use this type in their interfaces,
156 if they are compiled or used with those options.
158 * The getentropy and getrandom functions, and the <sys/random.h> header file
161 * The buffer size for byte-oriented stdio streams is now limited to 8192
162 bytes by default. Previously, on Linux, the default buffer size on most
163 file systems was 4096 bytes (and thus remains unchanged), except on
164 network file systems, where the buffer size was unpredictable and could be
165 as large as several megabytes.
167 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
168 for the Linux quota interface which predates kernel version 2.4.22 has
171 * The malloc_get_state and malloc_set_state functions have been removed.
172 Already-existing binaries that dynamically link to these functions will
173 get a hidden implementation in which malloc_get_state is a stub. As far
174 as we know, these functions are used only by GNU Emacs and this change
175 will not adversely affect already-built Emacs executables. Any undumped
176 Emacs executables, which normally exist only during an Emacs build, should
177 be rebuilt by re-running “./configure; make” in the Emacs build tree.
179 * The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
180 corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
181 “no-ip6-dotint” had already been the default, and support for the
182 “ip6-dotint” option was removed from the Internet in 2006.
184 * The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
185 flag from <resolv.h> have been removed. The option relied on a
186 backwards-incompatible DNS extension which was never deployed on the
189 * The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
190 RES_BLAST defined in the <resolv.h> header file have been deprecated.
191 They were already unimplemented.
193 * The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
194 _res.flags are deprecated. The flag was standardized in RFC 2133, but
195 removed again from the IETF name lookup interface specification in RFC
196 2553. Applications should use getaddrinfo instead.
198 * DNSSEC-related declarations and definitions have been removed from the
199 <arpa/nameser.h> header file, and libresolv will no longer attempt to
200 decode the data part of DNSSEC record types. Previous versions of glibc
201 only implemented minimal support for the previous version of DNSSEC, which
202 is incompatible with the currently deployed version.
204 * The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
205 ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
206 <arpa/nameser.h> header file because the distinction between RR types and
207 meta-RR types is not officially standardized, subject to revision, and
208 thus not suitable for encoding in a macro.
210 * The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
211 and rhook members of the res_state type in <resolv.h> have been removed.
212 The glibc stub resolver did not support these hooks, but the header file
213 did not reflect that.
215 * For multi-arch support it is recommended to use a GCC which has
216 been built with support for GNU indirect functions. This ensures
217 that correct debugging information is generated for functions
218 selected by IFUNC resolvers. This support can either be enabled by
219 configuring GCC with '--enable-gnu-indirect-function', or by
220 enabling it by default by setting 'default_gnu_indirect_function'
221 variable for a particular architecture in the GCC source file
224 * GDB pretty printers have been added for mutex and condition variable
225 structures in POSIX Threads. When installed and loaded in gdb these pretty
226 printers show various pthread variables in human-readable form when read
227 using the 'print' or 'display' commands in gdb.
229 * Tunables feature added to allow tweaking of the runtime for an application
230 program. This feature can be enabled with the '--enable-tunables' configure
231 flag. The GNU C Library manual has details on usage and README.tunables has
232 instructions on adding new tunables to the library.
234 * A new version of condition variables functions have been implemented in
235 the NPTL implementation of POSIX Threads to provide stronger ordering
238 * A new version of pthread_rwlock functions have been implemented to use a more
239 scalable algorithm primarily through not using a critical section anymore to
242 Security related changes:
244 * On ARM EABI (32-bit), generating a backtrace for execution contexts which
245 have been created with makecontext could fail to terminate due to a
246 missing .cantunwind annotation. This has been observed to lead to a hang
247 (denial of service) in some Go applications compiled with gccgo. Reported
248 by Andreas Schwab. (CVE-2016-6323)
250 * The DNS stub resolver functions would crash due to a NULL pointer
251 dereference when processing a query with a valid DNS question type which
252 was used internally in the implementation. The stub resolver now uses a
253 question type which is outside the range of valid question type values.
256 The following bugs are resolved with this release:
258 [4099] stdio: Overly agressive caching by stream i/o functions.
259 [7065] build: Support building glibc with -fstack-protector or -fstack-
261 [9842] localedata: en_CA: incorrect date format
262 [13165] nptl: pthread_cond_wait() can consume a signal that was sent
263 before it started waiting
264 [14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
265 [15765] nptl: sem_open is wrongly a cancellation point
266 [16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
267 [16458] libc: endian.h and netinet/in.h byte order macros return values of
269 [16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
270 library linked with pthread
271 [16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
273 [16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
274 [17252] libc: getrandom and getentropy syscall
275 [17730] malloc: thread-local storage is sometimes improperly free()'d
276 after being __libc_memalign()'d
277 [18241] stdio: failed fseek on memstream does not set errno and can fail
279 [18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
281 [18463] nptl: pthread_cond_broadcast issue when surrounded by
282 PTHREAD_PRIO_INHERIT mutex on ARM
283 [18784] network: res_query and related function crash for special record
284 type queries (CVE-2015-5180)
285 [19380] math: strtod does not raise "inexact"
286 [19387] string: Integer overflow in memchr
287 [19390] string: Integer overflow in strncat
288 [19398] build: linknamespace tests fail with massively parallel build
289 [19402] nptl: Deadlock with robust shared mutex and asynchronous
291 [19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
292 [19473] malloc: Turn malloc_get_state etc. in compatibility symbols
293 [19514] libc: [PATCH] Fix spelling errors in spelling
294 "implement"/"implementation" in several places
295 [19582] network: Deprecate RES_USE_INET6
296 [19673] manual: clog10 docs appear to be erroneous
297 [19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
298 causes a segmentation fault
299 [19826] libc: invalid pointer returned from __tls_get_addr with static
301 [20016] network: resolv: Remove hooks support from the API
302 [20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
304 [20033] math: [x86_64] vectorized math function don't call the __finite
306 [20116] nptl: use after free in pthread_create
307 [20181] stdio: open_memstream(): writes not at end of stream corrupt data
308 [20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
310 [20311] nptl: please install proc_service.h
311 [20366] libc: Compilation errors in installed headers in strict-compliance
313 [20370] malloc: malloc: Arena free list management is still racy
314 (incorrect fix in bug 19243)
315 [20386] libc: assert (X = 0) does not result in GCC warning
316 [20432] malloc: malloc: Minimize interface required for interposition
317 [20435] libc: Missing unwind info in __startcontext causes infinite loop
318 in _Unwind_Backtrace (CVE-2016-6323)
319 [20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
320 [20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
322 [20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
323 [20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
324 [20477] network: resolv: incorrect double-checked locking related to
326 [20478] libc: libc_ifunc macro and similar usages leads to false debug-
328 [20495] math: x86_64 performance degradation due to AVX/SSE transition
330 [20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
331 [20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
332 cause transition penalty
333 [20517] math: sparcv9 missing fdiml compat symbol
334 [20524] manual: strverscmp is inconsistent
335 [20525] libc: <sys/quota.h> should be based on kernel headers
336 [20539] math: GCC 7 -static -lm fails to link at -O3
337 [20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
339 [20558] string: POSIX bcopy/bzero decls do not implement Object Size
341 [20591] network: Remove obsolete DNSSEC support
342 [20592] network: DNS resource record type classification macros in
343 <arpa/nameser.h> are incorrect
344 [20593] network: Update DNS RR type definitions
345 [20611] network: getaddrinfo accepts invalid numeric scope IDs
346 [20615] build: glibc build fails when using --with-cpu=power9 --enable-
348 [20629] network: libresolv: Remove support for bitstring labels
350 [20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
351 assertion: "maxidx >= 2"
352 [20660] math: [arm] Use VSQRT
353 [20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
354 -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
355 [20689] libc: Test for FMA should also check for AVX.
356 [20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
357 [20715] math: iszero macro breaks existing code
358 [20718] math: [powerpc] copysignl raises "invalid" for sNaN
359 [20728] libc: powerpc: Missing TOC stub in clone
360 [20729] build: glibc-2.24 fails to build for i486 with -Os
361 [20750] build: Build fails with default PIE enabled gcc-6.x
362 [20768] math: [alpha] sqrt fegetenv namespace
363 [20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
365 [20787] math: float_t is defined as float incorrectly on x86_64 even if
366 __FLT_EVAL_METHOD__ is 2
367 [20790] network: rpcgen buffer overrun in get_prog_declaration
368 [20822] nptl: race condition in __lll_unlock_elision on powerpc
369 [20829] libc: crypt snprintf namespace
370 [20847] libc: tst-vfork3 failure
371 [20855] math: Default bits/mathdef.h has inappropriate float_t
372 [20859] math: [sh4] FP_ILOGB0 invalid
373 [20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
374 U+20AC), not same as GBK
375 [20915] dynamic-link: global-dynamic TLS broken on aarch64
376 [20916] math: pow handling of sNaN arguments
377 [20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
378 [20919] math: Bad pow (qNaN, 0) result with -lieee
379 [20940] math: hypot sNaN handling
380 [20947] math: fmax, fmin sNaN handling
381 [20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
382 [20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
384 [20971] string: powerpc64/power7 memchr overflows internal pointer check
385 [20973] nptl: robust mutexes: Lost wake-ups
386 [20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
387 [20978] nis: strlen on null pointer in nss_nisplus
388 [20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
390 [21014] string: i686 memchr overflows internal pointer check
391 [21019] libc: [mips] n32 lseek incorrect on overflow
392 [21022] libc: [microblaze] __backtrace get_frame_size namespace
393 [21026] libc: [MIPS] readahead syscall is broken on n64
394 [21028] math: Fallback fesetexceptflag should always succeed
395 [21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
396 [21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
398 [21053] libc: [SH] Namespace pollution from sys/ucontext.h
399 [21061] librt: [microblaze] librt lost clock_* exports
400 [21073] libc: tunables: insecure environment variables passed to
401 subprocesses with AT_SECURE
402 [21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
406 * The minimum Linux kernel version that this version of the GNU C Library
407 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
408 kernel version 2.6.32 or later suffices (on architectures that already
409 required kernel versions more recent than 3.2, those requirements remain
410 unchanged). Linux 3.2 or later kernel headers are required on all
413 * The pap_AN locale has been deleted. This has been deprecated for a long
414 time. It has been replaced by pap_AW & pap_CW, both of which have long
415 been included in previous releases.
417 * The readdir_r and readdir64_r functions have been deprecated. It is
418 recommended to use readdir and readdir64 instead.
420 * The type “union wait” has been removed. It was deprecated in the early
421 1990s and never part of POSIX. Application code should use the int type
422 instead of “union wait”.
424 * A new NSS action is added to facilitate large distributed system
425 administration. The action, MERGE, allows remote user stores like LDAP
426 to be merged into local user stores like /etc/groups in order to provide
427 easy to use, updated, and managed sets of merged credentials. The new
428 action can be used by configuring it in /etc/nsswitch.conf:
429 group: files [SUCCESS=merge] nis
430 Implemented by Stephen Gallagher (Red Hat).
432 * The deprecated __malloc_initialize_hook variable has been removed from the
435 * The long unused localedef --old-style option has been removed. It hasn't
436 done anything in over 16 years. Scripts using this option can safely
439 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
440 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
441 return the next representable value in the direction of positive infinity
442 and the nextdown functions return the next representable value in the
443 direction of negative infinity. These are currently enabled as GNU
446 Security related changes:
448 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
449 could result in a stack overflow when getnetbyname was called with an
450 overly long name. (CVE-2016-3075)
452 * Previously, getaddrinfo copied large amounts of address data to the stack,
453 even after the fix for CVE-2013-4458 has been applied, potentially
454 resulting in a stack overflow. getaddrinfo now uses a heap allocation
455 instead. Reported by Michael Petlan. (CVE-2016-3706)
457 * The glob function suffered from a stack-based buffer overflow when it was
458 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
459 Reported by Alexander Cherepanov. (CVE-2016-1234)
461 * The Sun RPC UDP client could exhaust all available stack space when
462 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
463 alloca plugin for GCC. (CVE-2016-4429)
465 * The IPv6 name server management code in libresolv could result in a memory
466 leak for each thread which is created, performs a failing naming lookup,
467 and exits. Over time, this could result in a denial of service due to
468 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
470 The following bugs are resolved with this release:
472 [1170] localedata: ne_NP: update Nepali locale definition file
473 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
475 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
476 [6796] math: fdim() does not set errno on overflow
477 [10354] libc: posix_spawn should use vfork() in more cases than presently
478 [11213] localedata: localedata: add copyright disclaimer to locale files
479 [12143] localedata: chr_US: new Cherokee locale
480 [12450] localedata: sgs_LT: new locale
481 [12676] localedata: ln_CD: new locale
482 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
484 [13304] math: fma, fmaf, fmal produce wrong results
485 [14259] build: --localedir arg to configure is ignored
486 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
487 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
488 [14934] localedata: es_CL: wrong first weekday chilean locale
489 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
491 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
493 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
494 [15368] nptl: raise() is not async-signal-safe
495 [15479] math: ceil, floor, round and trunc raise inexact exception
496 [15578] localedata: kk_KZ: various updates
497 [16003] localedata: pap_AN: punt old locale
498 [16137] localedata: iw_IL: punt old locale
499 [16190] localedata: eo: new esperanto locale
500 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
501 [16742] malloc: race condition: pthread_atfork() called before first
502 malloc() results in unexpected locking behaviour/deadlocks
503 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
505 [16983] localedata: postal_fmt does not allow %l and %n modifiers
506 [17565] localedata: pt_PT: wrong (work-)week start
507 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
508 [17950] build: Build fails with -msse
509 [18205] localedata: be_BY*: wrong first_weekday and first_workday
510 [18433] libc: posix_spawn does not return correctly upon failure to
512 [18453] localedata: charmaps/IBM875: incorrect codes
513 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
515 [18896] localedata: he_IL: improvements for currency
516 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
518 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
520 [19056] libc: Deprecate readdir_r
521 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
523 [19198] localedata: nl_NL: small improvements for Dutch locales
524 [19257] network: Per-thread memory leak in __res_vinit with IPv6
525 nameservers (CVE-2016-5417)
526 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
528 [19400] locale: Language missing in "iso-639.def", trivial fix in
530 [19431] malloc: Deadlock between fflush, getdelim, and fork
531 [19505] libc: Incorrect file descriptor validity checks in
532 posix_spawn_file_actions_add{open,close,dup2}
533 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
535 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
536 `intl/{gettextP,loadinfo}.h'
537 [19534] libc: execle, execlp may use malloc
538 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
539 [19573] network: res_nclose and __res_maybe_init disagree about name
540 server initialization, breaking Hesiod
541 [19575] localedata: Status of GB18030 tables
542 [19581] localedata: sr_* date_fmt string contains additional newline
543 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
545 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
546 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
547 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
548 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
550 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
552 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
554 [19610] dynamic-link: ldconfig -X removes stale symbolic links
555 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
556 [19633] locale: strfmon_l applies global locale to number formatting
557 [19642] network: Memory leak in getnameinfo
558 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
559 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
561 [19654] math: [x86_64] Need testcase for BZ #19590 fix
562 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
564 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
565 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
567 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
569 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
571 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
572 pointers and lengths in error-case.
573 [19727] locale: Converting from/to UTF-xx with iconv() does not always
574 report errors on UTF-16 surrogates values.
575 [19755] nscd: nscd assertion failure in gc
576 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
577 [19759] libc: mempcpy shouldn't be inlined
578 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
579 [19765] libc: s390 needs an optimized mempcpy
580 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
581 NAME_MAX limit assumption (CVE-2016-1234)
582 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
583 [19787] network: Missing and incorrect truncation checks in getnameinfo
584 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
586 [19791] network: Assertion failure in res_query.c with un-connectable name
588 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
589 [19822] math: libm.so install clobbers old version
590 [19825] network: resolv: send_vc can return uninitialized data in second
591 response to getaddrinfo
592 [19830] network: nss_dns: should check RDATA length against buffer length
593 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
594 confronted with A/AAAA records of invalid size
595 [19837] nss: nss_db: No retries for some long lines with a larger buffer
596 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
597 [19853] stdio: Printing IBM long double in decimal with high precision is
599 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
600 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
601 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
603 [19865] network: Assertion failure or memory leak in
604 _nss_dns_getcanonname_r
605 [19868] network: nss_dns: netent code does not skip over non-PTR records
606 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
608 [19881] string: Improve x86-64 memset
609 [19907] string: Incorrect memcpy tests
610 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
612 [19925] libc: termios.h XCASE namespace
613 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
614 [19929] libc: limits.h NL_NMAX namespace
615 [19931] stdio: Memory leak in vfprintf
616 [19957] libc: clone(CLONE_VM) access invalid parent memory
617 [19963] localedata: en_IL: New locale
618 [19989] stdio: stdio.h cuserid namespace
619 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
621 [19996] locale: langinfo.h nl_langinfo_l namespace
622 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
623 [20010] network: getaddrinfo: Stack overflow in hostent translation
625 [20012] stdio: libio: fmemopen append mode failure
626 [20014] stdio: stdio.h namespace for pre-threads POSIX
627 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
628 [20023] libc: fcntl.h timespec namespace
629 [20024] math: [x86_64] vectorized sincos trashes the stack
630 [20031] network: nss_hesiod: Heap overflow in get_txt_records
631 [20041] time: sys/time.h timespec namespace
632 [20043] libc: unistd.h missing cuserid for UNIX98 and before
633 [20044] libc: unistd.h missing pthread_atfork for UNIX98
634 [20051] libc: ttyslot in wrong header under wrong conditions
635 [20054] libc: gethostname not declared for XPG4
636 [20055] libc: termios.h missing tcgetsid for XPG4
637 [20072] dynamic-link: x86 init_cpu_features is called twice in static
639 [20073] libc: sys/stat.h fchmod namespace
640 [20074] libc: stdlib.h rand_r namespace
641 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
642 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
644 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
645 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
647 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
648 [20119] libc: Wrong mask for processors level type from CPUID
649 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
650 AS not supporting AVX512
651 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
653 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
654 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
656 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
657 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
658 [20178] libc: posix_spawn{p} should not call exit
659 [20191] stdio: libio: vtables hardening
660 [20195] string: FMA4 detection requires CPUID execution with register
662 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
663 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
665 [20212] math: acos (sNaN) returns sNaN
666 [20213] math: asin (sNaN) returns sNaN
667 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
668 [20218] math: [i386] asinhl (sNaN) returns sNaN
669 [20219] math: [i386] atanhl (sNaN) returns sNaN
670 [20222] stdio: fopencookie: Mangle function pointers
671 [20224] math: [i386] cbrtl (sNaN) returns sNaN
672 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
673 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
675 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
676 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
677 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
678 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
679 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
680 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
681 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
682 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
683 [20240] math: modf (sNaN) returns sNaN
684 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
685 [20250] math: frexp (sNaN) returns sNaN
686 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
687 [20255] math: [i386] fdim, fdimf return with excess range and precision /
689 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
690 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
691 subscript is below array bounds [-Werror=array-bounds]
692 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
693 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
695 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
696 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
698 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
700 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
701 [20316] localedata: id_ID: Februari instead of Pebruari
702 [20327] string: POWER8 strcasecmp returns incorrect result
703 [20347] math: Failure: Test: j0_downward (0xap+0)
704 [20348] libc: FAIL: misc/tst-preadvwritev64
705 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
706 [20350] libc: There is no test for p{read,write}64
707 [20357] math: Incorrect cos result for 1.5174239687223976
708 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
712 * Unicode 8.0.0 Support: Character encoding, character type info, and
713 transliteration tables are all updated to Unicode 8.0.0, using new
714 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
715 These updates cause user visible changes, such as the fixes for bugs
716 89, 16061, and 18568.
718 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
719 kernel-internal CPU set size. This means that requests that change the
720 CPU affinity which failed before (for example, an all-ones CPU mask) will
721 now succeed. Applications that need to determine the effective CPU
722 affinities need to call sched_getaffinity or pthread_getaffinity_np after
723 setting it because the kernel can adjust it (and the previous size check
724 would not detect this in the majority of cases).
726 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
727 the following new symbols are used: fts64_children, fts64_close,
728 fts64_open, fts64_read and fts64_set.
730 * getaddrinfo now detects certain invalid responses on an internal netlink
731 socket. If such responses are received, an affected process will
732 terminate with an error message of "Unexpected error <number> on netlink
733 descriptor <number>" or "Unexpected netlink response of size <number> on
734 descriptor <number>". The most likely cause for these errors is a
735 multi-threaded application which erroneously closes and reuses the netlink
736 file descriptor while it is used by getaddrinfo.
738 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
739 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
740 unnecessary serialization of memory allocation requests across threads.
741 The defect is now corrected. Users should see a substantial increase in
742 the concurent throughput of allocation requests for applications which
743 trigger this bug. Affected applications typically create and
744 destroy threads frequently. (Bug 19048 was reported and analyzed by
747 * There is now a --disable-timezone-tools configure option for disabling the
748 building and installing of the timezone related utilities (zic, zdump, and
749 tzselect). This is useful for people who build the timezone data and code
750 independent of the GNU C Library.
752 * The obsolete header <regexp.h> has been removed. Programs that require
753 this header must be updated to use <regex.h> instead.
755 * The obsolete functions bdflush, create_module, get_kernel_syms,
756 query_module and uselib are no longer available to newly linked binaries;
757 the header <sys/kdaemon.h> has been removed. These functions and header
758 were specific to systems using the Linux kernel and could not usefully be
759 used with the GNU C Library on systems with version 2.6 or later of the
762 * Optimized string, wcsmbs and memory functions for IBM z13.
763 Implemented by Stefan Liebler.
765 * Newly linked programs that define a variable called signgam will no longer
766 have it set by the lgamma, lgammaf and lgammal functions. Programs that
767 require signgam to be set by those functions must ensure that they use the
768 variable provided by the GNU C Library and declared in <math.h>, without
769 defining their own copy.
771 * The minimum GCC version that can be used to build this version of the GNU
772 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
773 still be used to compile programs using the GNU C Library.
775 Security related changes:
777 * An out-of-bounds value in a broken-out struct tm argument to strftime no
778 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
780 * The LD_POINTER_GUARD environment variable can no longer be used to disable
781 the pointer guard feature. It is always enabled. Previously,
782 LD_POINTER_GUARD could be used to disable security hardening in binaries
783 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
786 * An integer overflow in hcreate and hcreate_r could lead to an
787 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
789 * The catopen function no longer has unbounded stack usage. Reported by
792 * The nan, nanf and nanl functions no longer have unbounded stack usage
793 depending on the length of the string passed as an argument to the
794 functions. Reported by Joseph Myers. (CVE-2014-9761)
796 * A stack-based buffer overflow was found in libresolv when invoked from
797 libnss_dns, allowing specially crafted DNS responses to seize control
798 of execution flow in the DNS client. The buffer overflow occurs in
799 the functions send_dg (send datagram) and send_vc (send TCP) for the
800 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
801 family. The use of AF_UNSPEC triggers the low-level resolver code to
802 send out two parallel queries for A and AAAA. A mismanagement of the
803 buffers used for those queries could result in the response of a query
804 writing beyond the alloca allocated buffer created by
805 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
806 the overflow. Thanks to the Google Security Team and Red Hat for
807 reporting the security impact of this issue, and Robert Holiday of
808 Ciena for reporting the related bug 18665. (CVE-2015-7547)
810 The following bugs are resolved with this release:
812 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
813 [887] math: Math library function "logb" and "nextafter" inconsistent
814 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
815 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
816 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
817 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
819 [4404] localedata: German translation of "Alarm clock" is misleading
820 [6799] math: nextafter() and nexttoward() doen't set errno on
821 overflow/underflow errors
822 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
824 [10432] nis: _nss_nis_setnetgrent assertion failure
825 [11460] libc: fts has no LFS support
826 [12926] network: getaddrinfo()/make_request() may spin forever
827 [13065] nptl: Race condition in pthread barriers
828 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
829 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
831 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
832 [14912] libc: Rename non-installed bits/*.h headers
833 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
834 [15367] math: Let gcc use __builtin_isinf
835 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
836 [15421] math: lgamma wrongly sets signgam for ISO C
837 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
838 FE_INVALID with argument out of range
839 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
841 [15786] dynamic-link: ifunc resolver functions can smash function
843 [15918] math: Unnecessary check for equality in hypotf()
844 [16061] localedata: Review / update transliteration data
845 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
847 [16141] time: strptime %z offset restriction
848 [16171] math: drem should be alias of remainder
849 [16296] math: fegetround is pure?
850 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
851 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
853 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
854 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
856 [16422] math: [powerpc] math-float, math-double failing llrint tests with
857 "Exception "Inexact" set" on ppc32
858 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
859 [16517] math: Missing underflow exception from tanf/tan/tanl
860 [16519] math: Missing underflow exception from sinhf
861 [16520] math: Missing underflow exception from tanhf
862 [16521] math: Missing underflow exception from exp2
863 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
865 [16734] stdio: fopen calls mmap to allocate its buffer
866 [16961] math: nan function incorrect handling of bad sequences
867 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
868 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
869 [16985] locale: localedef: confusing error message when opening output
871 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
872 [17197] locale: Redundant shift character in iconv conversion output at
874 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
875 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
876 [17250] dynamic-link: static linking breaks nss loading
877 (getaddrinfo/getpwnam/etc...)
878 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
880 [17441] math: isnan() should use __builtin_isnan() in GCC
881 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
882 (related to lock elision)
883 [17787] manual: Exponent on page 324 of the PDF ends prematurely
884 [17886] time: strptime should be able to parse "Z" as a timezone with %z
885 [17887] time: strptime should be able to parse "+01:00" style timezones
886 [17905] libc: catopen() Multiple unbounded stack allocations
888 [18084] libc: backtrace (..., 0) dumps core on x86
889 [18086] libc: nice() sets errno to 0 on success
890 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
891 is too large (CVE-2015-8778)
892 [18251] dynamic-link: SONAME missing when audit modules provides path
893 [18265] libc: add attributes for wchar string and memory functions
894 [18370] math: csqrt missing underflows
895 [18421] libc: [hppa] read-only segment has dynamic relocations
896 [18472] libc: Obsolete syscall wrappers should be compat symbols
897 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
898 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
899 [18525] localedata: Remove locale timezone information
900 [18560] libc: [powerpc] spurious bits/ipc.h definitions
901 [18568] localedata: Update locale data to Unicode 8.0
902 [18589] locale: sort-test.sh fails at random
903 [18595] math: ctan, ctanh missing underflows
904 [18604] libc: assert macro-expands its argument
905 [18610] math: S390: fetestexcept() reports any exception if DXC-code
906 contains a vector instruction exception.
907 [18611] math: j1, jn missing errno setting on underflow
908 [18618] localedata: sync Chechen locale definitions with other *_RU
910 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
911 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
912 [18665] network: In send_dg, the recvfrom function is NOT always using the
913 buffer size of a newly created buffer (CVE-2015-7547)
914 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
916 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
918 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
919 [18699] math: tilegx cproj() for various complex infinities does not yield
921 [18724] libc: Harden put*ent functions against data injection
922 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
923 [18755] build: build errors with -DNDEBUG
924 [18757] stdio: fmemopen fails to set errno on failure
925 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
927 [18781] libc: openat64 lacks O_LARGEFILE
928 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
929 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
930 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
931 [18790] math: [ldbl-128ibm] tanhl inaccurate
932 [18795] libc: stpncpy fortification misses buffer lengths that are
934 [18796] build: build fails for --disable-mathvec
935 [18803] math: hypot missing underflows
936 [18820] stdio: fmemopen may leak memory on failure
937 [18823] math: csqrt spurious underflows
938 [18824] math: fma spurious underflows
939 [18825] math: pow missing underflows
940 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
941 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
942 [18870] build: sem_open.c fails to compile with missing symbol
944 [18872] stdio: Fix memory leak in printf_positional
945 [18873] libc: posix_fallocate overflow check ineffective
946 [18875] math: Excess precision leads incorrect libm
947 [18877] libc: arm: mmap offset regression
948 [18887] libc: memory corruption when using getmntent on blank lines
949 [18918] localedata: hu_HU: change time to HH:MM:SS format
950 [18921] libc: Regression: extraneous stat() and fstat() performed by
952 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
953 binaries (CVE-2015-8777)
954 [18951] math: tgamma missing underflows
955 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
957 [18953] localedata: lt_LT: change currency symbol to the euro
958 [18956] math: powf inaccuracy
959 [18961] math: [i386] exp missing underflows
960 [18966] math: [i386] exp10 missing underflows
961 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
962 [18969] build: multiple string test failures due to missing locale
964 [18970] libc: Reference of pthread_setcancelstate in libc.a
965 [18977] math: float / long double Bessel functions not in XSI POSIX
966 [18980] math: i386 libm functions return with excess range and precision
967 [18981] math: i386 scalb*, ldexp return with excess range and precision
968 [18982] stdio: va_list and vprintf
969 [18985] time: Passing out of range data to strftime() causes a segfault
971 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
972 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
973 [19012] locale: iconv_open leaks memory on error path
974 [19016] math: clog, clog10 inaccuracy
975 [19018] nptl: Mangle function pointers in tls_dtor_list
976 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
977 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
978 [19048] malloc: malloc: arena free list can become cyclic, increasing
980 [19049] math: [powerpc] erfc incorrect zero sign
981 [19050] math: [powerpc] log* incorrect zero sign
982 [19058] math: [x86_64] Link fail with -fopenmp and -flto
983 [19059] math: nexttoward overflow incorrect in non-default rounding modes
984 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
985 [19074] network: Data race in _res_hconf_reorder_addrs
986 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
987 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
988 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
990 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
992 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
993 [19086] manual: posix_fallocate64 documented argument order is wrong.
994 [19088] math: lround, llround missing exceptions close to overflow
996 [19094] math: lrint, llrint missing exceptions close to overflow threshold
997 [19095] math: dbl-64 lrint incorrect for 64-bit long
998 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
999 [19124] dynamic-link: ld.so failed to build with older assmebler
1000 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
1001 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
1002 [19134] math: [powerpc32] lround, lroundf spurious exceptions
1003 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
1004 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
1005 pthread_setaffinity_np
1006 [19156] math: [ldbl-128] j0l spurious underflows
1007 [19164] nptl: tst-getcpu fails with many possible CPUs
1008 [19168] math: math/test-ildoubl and math/test-ldouble failure
1009 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
1010 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
1012 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
1013 (FE_NOMASK_ENV) do not clear SSE exceptions
1014 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
1015 _int_new_arena/reused_arena
1016 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
1017 [19201] math: dbl-64 remainder incorrect sign of zero result
1018 [19205] math: bits/math-finite.h conditions do not match math.h and
1020 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
1021 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
1022 for C99-based standards
1023 [19212] libc: features.h not -Wundef clean
1024 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
1026 [19214] libc: Family and model identification for AMD CPU's are incorrect.
1027 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
1028 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
1030 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
1031 "inexact" exceptions
1032 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
1034 [19242] libc: strtol incorrect in Turkish locales
1035 [19243] malloc: reused_arena can pick an arena on the free list, leading
1036 to an assertion failure and reference count corruption
1037 [19253] time: tzset() ineffective when temporary TZ did not include DST
1039 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
1040 [19270] math: [hppa] Shared libm missing __isnanl
1041 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
1042 MAP_HUGETLB and MAP_STACK defines
1043 [19313] nptl: Wrong __cpu_mask for x32
1044 [19347] libc: grantpt: try to force a specific gid even without pt_chown
1045 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
1046 [19350] math: [ldbl-128ibm] sinhl spurious overflows
1047 [19351] math: [ldbl-128ibm] logl inaccurate near 1
1048 [19363] time: x32: times() return value wrongly truncates/sign extends
1050 [19367] dynamic-link: Improve branch prediction on Silvermont
1051 [19369] network: Default domain name not reset by res_ninit when "search"
1052 / "domain" entry is removed from resolv.conf
1053 [19375] math: powerpc: incorrect results for POWER7 logb with negative
1055 [19385] localedata: bg_BG: time separator should be colon, not comma
1056 [19408] libc: linux personality syscall wrapper may erroneously return an
1057 error on 32-bit architectures
1058 [19415] libc: dladdr returns wrong names on hppa
1059 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
1060 IBM905, IBM907, and IBM909
1061 [19439] math: Unix98 isinf and isnan functions conflict with C++11
1062 [19443] build: build failures with -DDEBUG
1063 [19451] build: Make check fails on test-double-vlen2
1064 [19462] libc: Glibc failed to build with -Os
1065 [19465] math: Wrong code with -Os
1066 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
1068 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
1070 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
1071 [19486] math: S390: Math tests fail with "Exception Inexact set".
1072 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
1073 [19550] libc: [mips] mmap negative offset handling inconsistent with other
1075 [19590] math: Fail to build shared objects that use libmvec.so functions.
1079 * The following bugs are resolved with this release:
1081 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
1082 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
1083 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
1084 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
1085 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
1086 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
1087 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
1088 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
1089 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
1090 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
1091 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
1092 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
1093 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
1094 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
1095 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
1096 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
1097 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
1098 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
1099 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
1100 18657, 18676, 18694, 18696, 18887.
1102 * Cache information can be queried via sysconf() function on s390 e.g. with
1103 _SC_LEVEL1_ICACHE_SIZE as argument.
1105 * A buffer overflow in gethostbyname_r and related functions performing DNS
1106 requests has been fixed. If the NSS functions were called with a
1107 misaligned buffer, the buffer length change due to pointer alignment was
1108 not taken into account. This could result in application crashes or,
1109 potentially arbitrary code execution, using crafted, but syntactically
1110 valid DNS responses. (CVE-2015-1781)
1112 * The time zone file parser has been made more robust against crafted time
1113 zone files, avoiding heap buffer overflows related to the processing of
1114 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
1115 large time zone data files. Overly long time zone specifiers in the TZ
1116 variable no longer result in stack overflows and crashes.
1118 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
1119 for LD and GD on x86 and x86-64, has been implemented. You will need
1120 binutils-2.24 or later to enable this optimization.
1122 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
1123 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
1124 Hat). These updates cause user visible changes, such as the fix for bug
1127 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
1128 and getXXbyYY NSS calls for the same database, causing a denial-of-service
1129 condition in some applications.
1131 * Added vector math library named libmvec with the following vectorized x86_64
1132 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
1134 The library can be disabled with --disable-mathvec. Use of the functions is
1135 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
1136 Shared library libmvec.so is linked in as needed when using -lm (no need to
1137 specify -lmvec explicitly for not static builds).
1138 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
1140 * A new fmemopen implementation has been added with the goal of POSIX
1141 compliance. The new implementation fixes the following long-standing
1142 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
1143 old implementation is still present for use be by existing binaries.
1145 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
1146 releases. It has been fixed to match 2.19 and older, but binaries built
1147 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
1149 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
1150 Contributed by Roland McGrath (Google).
1152 * The header <regexp.h> is deprecated, and will be removed in a future
1153 release. Use of this header will trigger a deprecation warning.
1154 Application developers should update their code to use <regex.h> instead.
1156 This header was formerly part of SUS, but was deprecated in 1994 and
1157 removed from the standard in 2001. Also, the glibc implementation
1158 leaks memory. See BZ#18681 for more details.
1162 * The following bugs are resolved with this release:
1164 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
1165 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
1166 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
1167 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
1168 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
1169 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
1170 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
1171 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
1172 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
1173 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
1176 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
1177 too little memory for the to-be-scanned arguments and overflow the
1178 allocated buffer. The implementation now correctly computes the required
1179 buffer size when using malloc, and switches to malloc from alloca as
1182 * A new semaphore algorithm has been implemented in generic C code for all
1183 machines. Previous custom assembly implementations of semaphore were
1184 difficult to reason about or ensure that they were safe. The new version
1185 of semaphore supports machines with 64-bit or 32-bit atomic operations.
1186 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
1187 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
1189 * Port to Altera Nios II has been contributed by Mentor Graphics.
1191 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
1192 implementations for powerpc64/powerpc64le.
1193 Implemented by Adhemerval Zanella (IBM).
1195 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
1196 and powerpc64le. This may improve lock scaling of existing programs on
1197 HTM capable systems. The lock elision code is only enabled with
1198 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
1199 powerpc will issue a transaction abort on every syscall to avoid side
1200 effects being visible outside transactions.
1202 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
1203 AArch64. Contributed by ARM Ltd.
1205 * i386 memcpy functions optimized with SSE2 unaligned load/store.
1207 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
1208 under certain input conditions resulting in the execution of a shell for
1209 command substitution when the application did not request it. The
1210 implementation now checks WRDE_NOCMD immediately before executing the
1211 shell and returns the error WRDE_CMDSUB as expected.
1213 * CVE-2012-3406 printf-style functions could run into a stack overflow when
1214 processing format strings with a large number of format specifiers.
1216 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
1217 infinite loop if the DNS response contained a PTR record of an unexpected
1220 * The minimum GCC version that can be used to build this version of the GNU
1221 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
1222 still be used to compile programs using the GNU C Library.
1224 * The GNU C Library is now built with -Werror by default. This can be
1225 disabled by configuring with --disable-werror.
1227 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
1229 * The obsolete sigvec function has been removed. This was the original
1230 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
1231 programs have been using instead for about 25 years. Of course, ABI
1232 compatibility for old binaries using sigvec remains intact.
1234 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
1235 with newer versions of bison.
1237 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
1238 The original MIPS o32 hard-float ABI requires an FPU where double-precision
1239 registers overlay two consecutive single-precision registers. MIPS32R2
1240 introduced a new FPU mode (FR=1) where double-precision registers extend the
1241 corresponding single-precision registers which is incompatible with the
1242 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
1243 require the use of FR=1 making a transition necessary. New o32 ABI
1244 extensions enable users to migrate over time from the original o32 ABI
1245 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
1246 tracks the ABI of any loaded object and verifies that new objects are
1247 compatible. Mode transitions will also be requested as required and
1248 unsupportable objects will be rejected. The ABI checks include both soft and
1249 hard float ABIs for o32, n32 and n64.
1251 GCC 5 with GNU binutils 2.25 onwards:
1252 It is strongly recommended that all o32 system libraries are built using the
1253 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
1254 with the original and all new o32 ABI extensions. Configure a MIPS GCC
1255 compiler using --with-fp-32=xx to set this by default.
1259 * The following bugs are resolved with this release:
1261 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
1262 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
1263 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
1264 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
1265 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
1266 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
1267 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
1268 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
1269 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
1270 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
1271 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
1272 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
1273 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
1274 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
1275 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
1277 * Reverted change of ABI data structures for s390 and s390x:
1278 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
1279 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
1280 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
1281 are preserved pointing straight to the same implementation as the old ones.
1282 Given that, new callers will simply provide a too-big buffer to these
1283 functions. Any applications/libraries out there that embed jmp_buf or
1284 ucontext_t in an ABI-relevant data structure that have already been rebuilt
1285 against 2.19 headers will have to rebuilt again. This is necessary in any
1286 case to revert the breakage in their ABI caused by the glibc change.
1288 * Support for file description locks is added to systems running the
1289 Linux kernel. The standard file locking interfaces are extended to
1290 operate on file descriptions, not file descriptors, via the use of
1291 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
1292 are associated with an open file instead of a process.
1294 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
1296 * The minimum Linux kernel version that this version of the GNU C Library
1297 can be used with is 2.6.32.
1299 * Running the testsuite no longer terminates as soon as a test fails.
1300 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
1301 with PASS or FAIL lines for individual tests. A summary of the results is
1302 printed, including a list of failing lists, and "make check" exits with
1303 error status if there were any unexpected failures. "make check
1304 stop-on-test-failure=y" may be used to keep the old behavior.
1306 * The am33 port, which had not worked for several years, has been removed
1309 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
1310 supported; they now act the same as _DEFAULT_SOURCE (but generate a
1311 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
1312 conflicted with POSIX (support for which was removed in 2.19), the
1313 interfaces those macros enabled remain available when compiling with
1314 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
1315 test macros defined.
1317 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
1319 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
1320 This may improve lock scaling of existing programs on TX capable systems.
1321 The lock elision code is only built with --enable-lock-elision=yes and
1322 then requires a GCC version supporting the TX builtins. With lock elision
1323 default mutexes are elided via __builtin_tbegin, if the cpu supports
1324 transactions. By default lock elision is not enabled and the elision code
1327 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
1328 copy the path argument. This allowed programs to cause posix_spawn to
1329 deference a dangling pointer, or use an unexpected pathname argument if
1330 the string was modified after the posix_spawn_file_actions_addopen
1333 * All supported architectures now use the main glibc sysdeps directory
1334 instead of some being in a separate "ports" directory (which was
1335 distributed separately before glibc 2.17).
1337 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
1338 On configurations that support it (all Linux configurations), it's now
1339 used regardless of the --enable-add-ons switch to configure. It is no
1340 longer possible to build such configurations without pthreads support.
1342 * Locale names, including those obtained from environment variables (LANG
1343 and the LC_* variables), are more tightly checked for proper syntax.
1344 setlocale will now fail (with EINVAL) for locale names that are overly
1345 long, contain slashes without starting with a slash, or contain ".." path
1346 components. (CVE-2014-0475) Previously, some valid locale names were
1347 silently replaced with the "C" locale when running in AT_SECURE mode
1348 (e.g., in a SUID program). This is no longer necessary because of the
1351 * On x86-64, the dynamic linker's lazy-binding support is now compatible
1352 with application code using Intel MPX instructions. (With all previous
1353 versions, the MPX register state could be clobbered when making calls
1354 into or out of a shared library.) Note that while the new dynamic
1355 linker is compatible with all known x86 hardware whether or not it
1356 supports Intel MPX, some x86 instruction-set emulators might fail to
1357 handle the new instruction encodings. This is known to affect Valgrind
1358 versions up through 3.9 (but will be fixed in the forthcoming 3.10
1359 release), and might affect other tools that do instruction emulation.
1361 * Support for loadable gconv transliteration modules has been removed.
1362 The support for transliteration modules has been non-functional for
1363 over a decade, and the removal is prompted by security defects. The
1364 normal gconv conversion modules are still supported. Transliteration
1365 with //TRANSLIT is still possible, and the //IGNORE specifier
1366 continues to be supported. (CVE-2014-5119)
1368 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
1369 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
1370 resulting a denial-of-service security vulnerability in applications which
1371 use functions related to iconv. (CVE-2014-6040)
1375 * The following bugs are resolved with this release:
1377 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
1378 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
1379 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
1380 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
1381 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
1382 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
1383 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
1384 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
1385 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
1386 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
1387 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
1388 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
1389 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
1390 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
1391 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
1392 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
1393 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
1394 16431, 16453, 16474, 16506, 16510, 16529
1396 * Slovenian translations for glibc messages have been contributed by the
1397 Translation Project's Slovenian team of translators.
1399 * The public headers no longer use __unused nor __block. This change is to
1400 support compiling programs that are derived from BSD sources and use
1401 __unused internally, and to support compiling with Clang's -fblock
1402 extension which uses __block.
1404 * CVE-2012-4412 The strcoll implementation caches indices and rules for
1405 large collation sequences to optimize multiple passes. This cache
1406 computation may overflow for large collation sequences and may cause a
1407 stack or buffer overflow. This is now fixed to use a slower algorithm
1408 which does not use a cache if there is an integer overflow.
1410 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
1411 rules for large collation sequences to optimize multiple passes and falls
1412 back to alloca if malloc fails, resulting in a possible stack overflow.
1413 The implementation now falls back to an uncached collation sequence lookup
1416 * CVE-2013-4788 The pointer guard used for pointer mangling was not
1417 initialized for static applications resulting in the security feature
1418 being disabled. The pointer guard is now correctly initialized to a
1419 random value for static applications. Existing static applications need
1420 to be recompiled to take advantage of the fix (bug 15754).
1422 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
1423 to the d_name member of struct dirent, or omit the terminating NUL
1424 character. (Bugzilla #14699).
1426 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
1427 aligned_alloc functions could allocate too few bytes or corrupt the
1428 heap when passed very large allocation size values (Bugzilla #15855,
1431 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
1432 for AF_INET6 has been fixed (Bugzilla #16072).
1434 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
1435 pap_CW, quz_PE, the_NP.
1437 * Substantially revised locales: gd_GB, ht_HT
1439 * The LC_ADDRESS field was updated to support country_car for almost all
1442 * ISO 1427 definitions were updated.
1444 * ISO 3166 definitions were updated.
1446 * The localedef utility now supports --big-endian and --little-endian
1447 command-line options to generate locales for a different system from that
1448 for which the C library was built.
1450 * Binary locale files now only depend on the endianness of the system for
1451 which they are generated and not on other properties of that system. As a
1452 consequence, binary files generated with new localedef may be incompatible
1453 with old versions of the GNU C Library, and binary files generated with
1454 old localedef may be incompatible with this version of the GNU C Library,
1455 in the following circumstances:
1457 + Locale files may be incompatible on m68k systems.
1459 + Locale archive files (but not separate files for individual locales) may
1460 be incompatible on systems where plain "char" is signed.
1462 * The configure option --disable-versioning has been removed. Builds with
1463 --disable-versioning had not worked for several years.
1465 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
1466 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
1468 * SystemTap probes for malloc have been introduced.
1470 * SystemTap probes for slow multiple precision fallback paths of
1471 transcendental functions have been introduced.
1473 * Support for powerpc64le has been added.
1475 * The soft-float powerpc port now supports e500 processors.
1477 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
1479 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
1480 set of header declarations that are enabled by default, even when other
1481 feature test macros or compiler options such as -std=c99 would otherwise
1482 disable some of those declarations.
1484 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
1485 conflict with POSIX. The libbsd-compat library (which was a dummy library
1486 that did nothing) has also been removed.
1488 * Preliminary documentation about Multi-Thread, Async-Signal and
1489 Async-Cancel Safety has been added.
1491 * Change of ABI data structures for s390 and s390x:
1492 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
1493 allow for future hardware extensions. All library functions that accept or
1494 return these structures were versioned in order to provide backwards
1495 compatibility with existing code. However, not all cases can be handled
1496 with interface versioning. If an application embeds either structure into
1497 another structure and that structure is passed to another compilation unit
1498 which expects the newer larger-sized object then any access to the new
1499 fields will result in undefined behaviour. Similarly any access to fields
1500 that were moved by the enlarging of the structures will cause undefined
1501 behaviour. To fix the undefined behaviour all objects that are part of the
1502 final in-memory image must agree on the size of structures, and this may
1503 require recompilation.
1507 * The following bugs are resolved with this release:
1509 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
1510 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
1511 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
1512 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
1513 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
1514 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
1515 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
1516 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
1517 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
1518 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
1519 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
1520 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
1521 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
1524 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
1525 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
1526 Distributions can re-enable building and using pt_chown via the new configure
1527 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
1528 considerable security risks and should only be used if the distribution
1529 understands and accepts the risks.
1531 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
1534 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
1535 fixed (Bugzilla #15330).
1537 * Add support for calling C++11 thread_local object destructors on thread
1538 and program exit. This needs compiler support for offloading C++11
1539 destructor calls to glibc.
1541 * Improved worst case performance of libm functions with double inputs and
1544 * Support for priority inherited mutexes in pthread condition variables on
1545 non-x86 architectures.
1547 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
1549 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
1551 * Optimized string functions for ARM. Implemented by Will Newton and
1554 * Optimized libm functions for SPARC. Implemented by David S. Miller.
1556 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
1559 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
1560 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
1562 * Added a benchmark framework to track performance of functions in glibc.
1564 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
1565 It is based on draft TS 18661 and currently enabled as a GNU extension.
1567 * On Linux, the clock function now uses the clock_gettime system call
1568 for improved precision, rather than old times system call.
1570 * Added support for version-3 tz format files. This is needed when using
1571 the tz database release 2013e or later, and affects a few unusual cases --
1572 currently only TZ='America/Godthab' for time stamps after 2037.
1574 * Added new API functions pthread_getattr_default_np and
1575 pthread_setattr_default_np to get and set the default pthread
1576 attributes of a process.
1578 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
1579 This may improve lock scaling of existing programs on TSX capable systems.
1580 When the --enable-lock-elision=yes parameter is specified at configure
1581 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
1584 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
1585 availability). Implemented by Ryan S. Arnold.
1587 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
1591 * The following bugs are resolved with this release:
1593 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
1594 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
1595 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
1596 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
1597 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
1598 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
1599 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
1600 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
1601 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
1602 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
1603 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
1604 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
1605 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
1606 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
1607 14879, 14889, 14893, 14898, 14914.
1609 * Optimization of memcpy for MIPS.
1611 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
1612 EMFILE has been fixed (Bugzilla #14889).
1614 * The add-on ports collection is now distributed in the "ports" subdirectory
1615 of the main GNU C Library distribution, rather than separately.
1617 * Port to ARM AArch64 contributed by Linaro.
1619 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
1620 Optimized versions of memcpy, memset, and memcmp added for System z10 and
1622 Implemented by Andreas Krebbel.
1624 * The new function secure_getenv allows secure access to the environment,
1625 returning NULL if running in a SUID/SGID process. This function replaces
1626 the internal function __secure_getenv.
1628 * SystemTap static probes have been added into the dynamic linker.
1629 Implemented by Gary Benson.
1631 * Optimizations of string functions strstr, strcasestr and memmem.
1632 Implemented by Maxim Kuvyrkov.
1634 * The minimum Linux kernel version that this version of the GNU C Library
1635 can be used with is 2.6.16.
1637 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
1638 powerpc POWER7. Implemented by Will Schmidt.
1640 * New configure option --disable-nscd builds the C library such that it
1641 never attempts to contact the Name Service Caching Daemon (nscd).
1642 New configure option --disable-build-nscd avoids building nscd itself;
1643 this is the default if --disable-nscd is used.
1645 * Improved support for cross-compilation, including cross-testing and
1646 bootstrap builds without a previously built glibc.
1648 * Several testsuite tests are now able to test multiple IFUNC variants of an
1649 interface, rather than just testing the one that would be chooen by
1652 * New configure options --with-bugurl and --with-pkgversion, for
1653 distributors to use to embed their bug-reporting and package version
1654 information in --help and --version output.
1656 * The ttyname and ttyname_r functions on Linux now fall back to searching for
1657 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
1658 allows creation of chroots without the procfs mounted on /proc.
1660 * The `crypt' function now fails if passed salt bytes that violate the
1661 specification for those values. On Linux, the `crypt' function will
1662 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
1663 enabled, and fail on encrypted strings using the MD5 or DES algorithm
1664 when the mode is enabled.
1666 * The `clock_*' suite of functions (declared in <time.h>) is now available
1667 directly in the main C library. Previously it was necessary to link with
1668 -lrt to use these functions. This change has the effect that a
1669 single-threaded program that uses a function such as `clock_gettime' (and
1670 is not linked with -lrt) will no longer implicitly load the pthreads
1671 library at runtime and so will not suffer the overheads associated with
1672 multi-thread support in other code such as the C++ runtime library.
1674 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
1679 * The following bugs are resolved with this release:
1681 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
1682 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
1683 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
1684 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
1685 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
1686 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
1687 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
1688 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
1689 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
1690 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
1691 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
1692 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
1693 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
1694 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
1695 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
1696 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
1697 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
1698 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
1699 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
1700 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
1701 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
1702 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
1705 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
1706 configuring glibc with:
1707 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
1708 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
1709 Implemented by H.J. Lu.
1713 + define static_assert
1715 + do not declare gets
1717 + declare at_quick_exit and quick_exit also for ISO C11
1719 + aligned_alloc. NB: The code is deliberately allows the size parameter
1720 to not be a multiple of the alignment. This is a moronic requirement
1721 in the standard but it is only a requirement on the caller, not the
1724 + timespec_get added
1726 + uchar.h support added
1728 + CMPLX, CMPLXF, CMPLXL added
1730 Implemented by Ulrich Drepper.
1732 * Support for the IA-64 has been moved to ports.
1734 * Remove support for anything but ELF binary format
1736 * Checking versions of poll, ppoll added.
1737 Implemented by Ulrich Drepper.
1739 * More generic and 64-bit performance optimizations to math functions.
1740 Implemented by Ulrich Drepper.
1742 * New configure option --enable-obsolete-rpc makes the deprecated RPC
1743 headers and functions available at compile time as they were before
1744 version 2.14. This option will be removed at some time in the future
1745 after the TI-RPC library becomes fully sufficient for the needs of
1746 existing applications.
1748 * Compatibility code for Linux kernel versions before 2.4 has been removed.
1749 Note that glibc is not expected to work with any Linux kernel version
1752 * New header <sys/auxv.h> and function getauxval allowing easy access to
1753 the AT_* key-value pairs passed from the Linux kernel. The header also
1754 defines the HWCAP_* bits associated with the AT_HWCAP key.
1756 * New locales: mag_IN
1758 * New configure option --enable-systemtap builds SystemTap static probes
1759 into libc for setjmp and longjmp and into libpthread for various operations.
1760 So far the setjmp/longjmp probes and some of the libpthread probes are
1761 provided only for i*86 and x86_64.
1762 Implemented by Roland McGrath and Rayson Ho.
1764 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
1766 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
1769 * More optimized functions for SPARC. Implemented by David S. Miller.
1771 * Improved support for cross-compilation, especially bootstrap builds
1772 without a previously built glibc.
1774 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
1775 Chris Metcalf from Tilera.
1777 * Support for the old ARM ABI has been removed from ports. Only the EABI is
1778 now supported for ARM processors.
1780 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
1781 as the name of the dynamic linker, to distinguish it from the
1782 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
1784 * Support for CRIS has been removed from ports.
1786 * A new class of installed header has been documented for low-level
1787 platform-specific functionality. PowerPC added the first instance with a
1788 function to provide time base register access. Contributed by Tulio
1789 Magno Quites Machado Filho.
1791 * ix86 configurations now install header files that are consistent with
1792 what x86-64 configurations install. These same header files can be used
1793 for -m32, -m64, or -mx32 builds.
1794 Contributed by H.J. Lu.
1796 * Math library bug fixes. A thorough audit of all open math library bugs was
1797 conducted by Joseph Myers. Significant progress was made on many math
1798 library bugs resulting in more accurate exceptions and function results.
1799 Many thanks to all those that contributed including Andreas Jaeger for his
1800 patch review and work on the x87 trigonometric instruction issues.
1802 * Timezone data is no longer installed. Timezone-related binaries and scripts
1803 will continue to be installed. Users should obtain their timezone data from
1804 their distribution provider or from the tzdata package at
1805 <ftp://munnari.oz.au/pub/>.
1809 * The following bugs are resolved with this release:
1811 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
1812 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
1813 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
1814 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
1815 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
1816 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
1817 13484, 13506, 13515, 13523, 13524, 13538, 13540
1819 * New program pldd to list loaded object of a process
1820 Implemented by Ulrich Drepper.
1822 * Add nss_db support back to glibc. No more dependency on Berkeley db
1823 and support for initgroups lookups.
1824 Implemented by Ulrich Drepper.
1826 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
1827 Contributed by HJ Lu.
1829 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
1830 Contributed by HJ Lu.
1832 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
1833 on x86-32 and x86-64.
1834 Contributed by Liubov Dmitrieva.
1836 * Optimized strchr and strrchr for SSE on x86-32.
1837 Contributed by Liubov Dmitrieva.
1839 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
1840 for x86-64 and x86-32.
1841 Contributed by Liubov Dmitrieva.
1843 * New interfaces: scandirat, scandirat64
1844 Implemented by Ulrich Drepper.
1846 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
1847 Implemented by Ulrich Drepper.
1849 * nscd now also caches the netgroup database.
1850 Implemented by Ulrich Drepper.
1852 * Integrate libm with gcc's -ffinite-math-only option.
1853 Implemented by Ulrich Drepper.
1855 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
1856 to math functions. Implemented by Ulrich Drepper.
1858 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
1859 Implemented by Ulrich Drepper.
1861 * New Linux interfaces: process_vm_readv, process_vm_writev
1863 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
1864 Implemented by Ulrich Drepper.
1866 * Optimized nearbyint and strcasecmp for PPC.
1867 Implemented by Adhemerval Zanella.
1869 * New locales: bho_IN, unm_US, es_CU, ta_LK
1873 * The following bugs are resolved with this release:
1875 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
1876 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
1877 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
1878 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
1879 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
1880 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
1881 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
1882 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
1883 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
1884 12795, 12811, 12813, 12814, 12841
1886 * The RPC implementation in libc is obsoleted. Old programs keep working
1887 but new programs cannot be linked with the routines in libc anymore.
1888 Programs in need of RPC functionality must be linked against TI-RPC.
1889 The TI-RPC implementation is IPv6 enabled and there are other benefits.
1891 Visible changes of this change include (obviously) the inability to link
1892 programs using RPC functions without referencing the TI-RPC library and the
1893 removal of the RPC headers from the glibc headers.
1894 Implemented by Ulrich Drepper.
1896 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
1897 syncfs, setns, sendmmsg
1899 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
1900 yue_HK, lij_IT, mhr_RU
1902 * New encodings: CP770, CP771, CP772, CP773, CP774
1904 * New program sotruss to trace calls through PLTs
1905 Implemented by Ulrich Drepper.
1907 * The malloc hook implementation is marked deprecated and will be removed
1908 from the default implementation in the next version. The design never
1909 worked ever since the introduction of threads. Even programs which do
1910 not create threads themselves can use multiple threads created internally.
1914 * The following bugs are resolved with this release:
1916 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
1917 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
1918 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
1919 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
1922 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
1924 * POWER7 optimizations: memset, memcmp, strncmp
1926 * New optimized string functions for x86-64: strnlen (SSE2),
1927 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
1928 Implemented by Ulrich Drepper.
1932 * The following bugs are resolved with this release:
1934 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
1935 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
1936 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
1937 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
1938 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
1939 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
1940 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
1941 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
1943 * New interfaces: pthread_getname_np, pthread_setname_np
1945 * New Linux interface: recvmmsg
1947 * STT_GNU_IFUNC implemented for Sparc by David Miller.
1949 * The dynamic linker now recognizes supported ABI versions from the
1950 EI_ABIVERSION field in the ELF header.
1951 Implemented by Ulrich Drepper.
1953 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
1954 will not be used to fill in password fields in the passwd.byname replies.
1955 Instead it is used to synthesize the shadow.byname table, should it be
1956 missing. This is a useful mode in some installations involving Solaris.
1957 Implemented by Ulrich Drepper.
1959 * New locales: kok_IN, sq_MK, cv_RU
1963 * The following bugs are resolved with this release:
1965 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
1966 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
1967 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
1968 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
1969 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
1970 10789, 10817, 10823, 10840, 10847
1972 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
1974 Implemented by Ulrich Drepper.
1976 * Checking version of longjmp added that fails if an uninitialized stack
1977 frame would be created. Implemented by Ulrich Drepper.
1979 * STT_GNU_IFUNC is now supported in static executables.
1980 Implemented by H.J. Lu.
1982 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
1984 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
1985 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
1986 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
1987 Contributed by H.J. Lu.
1989 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
1990 Implemented by Ulrich Drepper.
1992 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
1994 Contributed by H.J. Lu.
1996 * Support for fma instruction in AVX on x86-64.
1997 Implemented by H.J. Lu and Ulrich Drepper.
1999 * AVX support in x86-64 auditing support in ld.so.
2000 Implemented by H.J. Lu.
2002 * STB_GNU_UNIQUE support added.
2003 Implemented by Ulrich Drepper.
2005 * Implement second fallback mode for optimized DNS lookup for even more
2006 broken environments. If two requests from the same port are not
2007 handled correctly close the socket and open a new one before sending
2008 the second request. The 'single-request-reopen' option in /etc/resolv.conf
2009 can be used to select this mode right away, instead of rediscovering the
2010 necessity is every process again.
2011 Implemented by Ulrich Drepper.
2013 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
2014 Implemented by Adam Tkac.
2016 * Optimized iconv conversions for S390x.
2017 Implemented by Andreas Krebbel.
2019 * Using condvars with PI mutexes is now more efficient due to kernel
2020 support for requeueing to PI futexes. NPTL support added for x86-64.
2021 Implemented by Ulrich Drepper.
2023 * New locales: ps_AF, my_MM
2027 * The following bugs are resolved with this release:
2029 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
2030 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
2031 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
2032 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
2033 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
2035 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
2036 Implemented by Ulrich Drepper.
2038 * New Linux interfaces: accept4, fallocate, fallocate64.
2039 Implemented by Ulrich Drepper.
2041 * Correct declarations of string function when used in C++ code. This
2042 could lead to compile errors for invalid C++ code.
2044 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
2047 * New POSIX 2008 interface: psiginfo
2048 Implemented by Ulrich Drepper.
2050 * New ISO C++1x interfaces: quick_exit, at_quick_exit
2051 Implemented by Ulrich Drepper.
2053 * Support for selecting between multiple function definitions at runtime
2054 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
2056 * The libcrypt library can now use the hash function implementations in
2057 NSS. Implemented by Ulrich Drepper.
2059 * The malloc implementation can be compiled to be less memory efficient
2060 but higher performing in multi-threaded programs.
2061 Implemented by Ulrich Drepper.
2063 * New locales: nan_TW@latin, ks_IN
2065 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
2066 Implemented by Ulrich Drepper.
2068 * Extended printf hook support. It is possible to use user-defined types
2069 and extend existing format specifiers.
2070 Implemented by Ulrich Drepper.
2072 * Handling for group shadow files has been added.
2073 Implemented by Ulrich Drepper.
2075 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
2076 servers (the case, e.g., for some people using the built-in DNS
2077 server in ADSL modems/routers). There is a once-per-process timeout
2078 in case of a broken server. To avoid it, users can run nscd or put
2079 'options single-request' in /etc/resolv.conf.
2080 Implemented by Ulrich Drepper.
2084 * The following bugs are resolved with this release:
2086 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
2087 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
2088 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
2089 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
2090 6968, 6974, 6980, 6995, 7008, 7009, 7029
2092 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
2093 up at the same time. Implemented by Ulrich Drepper.
2095 * TLS descriptors for LD and GD on x86 and x86-64.
2096 Implemented by Alexandre Oliva.
2098 * getaddrinfo now handles DCCP and UDPlite.
2099 Implemented by Ulrich Drepper.
2101 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
2102 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
2103 Implemented by Ulrich Drepper.
2105 * New implementation of memmem, strstr, and strcasestr which is O(n).
2106 Implemented by Eric Blake.
2108 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
2110 * Implement "e" option for popen to open file descriptor with the
2111 close-on-exec flag set. Implemented by Ulrich Drepper.
2113 * Implement "b" mode for fmemopen. In this mode writes writes don't
2114 implicitly add a NUL byte and seeks from the end of the buffer really
2115 use the buffer end, not the string length as the basis.
2116 Implemented by Ulrich Drepper.
2118 * Many functions, exported and internal, now atomically set the close-on-exec
2119 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
2121 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
2123 Implemented by Pravin Satpute.
2125 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
2129 * The following bugs are resolved with this release:
2131 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
2132 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
2133 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
2134 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
2135 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
2136 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
2137 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
2139 * New locales: bo_CN, bo_IN, shs_CA.
2141 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
2143 * Sorting rules for some Indian languages (Devanagari and Gujarati).
2144 Implemented by Pravin Satpute.
2146 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
2148 * nscd caches now all timeouts for DNS entries
2149 Implemented by Ulrich Drepper.
2151 * nscd is more efficient and wakes up less often.
2152 Implemented by Ulrich Drepper.
2154 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
2155 vdprintf, and obstack_vprintf.
2156 Implemented by Jakub Jelinek.
2158 * Faster memset for x86-64.
2159 Implemented by Harsha Jagasia and H.J. Lu.
2161 * Faster memcpy on x86.
2162 Implemented by Ulrich Drepper.
2164 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
2165 Implemented by Ulrich Drepper.
2167 * Faster sqrt and sqrtf implemention for some PPC variants.
2168 Implemented by Steven Munroe.
2172 * The following bugs are resolved with this release:
2174 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
2175 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
2176 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
2177 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
2178 5071, 5103, 5104, 5112, 5113, 5184, 5186
2180 * More checking functions: fread, fread_unlocked, open*, mq_open.
2181 Implemented by Jakub Jelinek and Ulrich Drepper.
2183 * Extend fortification to C++. Implemented by Jakub Jelinek.
2185 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
2186 by not recognizing 'a' as a modifier when those specs are requested.
2187 Implemented by Jakub Jelinek.
2189 * PPC optimizations to math and string functions.
2190 Implemented by Steven Munroe.
2192 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
2193 options to be passed. Implemented by Ulrich Drepper.
2195 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
2197 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
2198 Implemented by Ulrich Drepper.
2200 * Handle private futexes in the NPTL implementation.
2201 Implemented by Jakub Jelinek and Ulrich Drepper.
2203 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
2204 Implemented by Roland McGrath and Ulrich Drepper.
2206 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
2208 * SHA-256 and SHA-512 based password encryption.
2209 Implemented by Ulrich Drepper.
2211 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
2212 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
2215 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
2216 Implemented by Ulrich Drepper.
2220 * The following bugs are resolved with this release:
2222 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
2223 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
2224 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
2225 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
2226 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
2227 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
2228 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
2231 * New Linux interfaces: epoll_pwait, sched_getcpu.
2233 * New generic interfaces: strerror_l.
2235 * nscd can now cache the services database. Implemented by Ulrich Drepper.
2239 * The following bugs are resolved with this release:
2241 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
2242 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
2243 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
2244 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
2245 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
2246 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
2247 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
2248 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
2249 3225, 3251, 3252, 3253, 3273
2251 * For Linux, the sorting of addresses returned by getaddrinfo now also
2252 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
2253 Implemented by Ulrich Drepper.
2255 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
2256 Implemented by Ulrich Drepper.
2258 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
2260 * New iconv module for MIK. Contributed by Alexander Shopov.
2262 * For sites with broken group and/or passwd database, the auto-propagate
2263 option of nscd can prevent creating ID lookup entries from the results
2264 of a name lookup and vice versa. This usually is no problem but some
2265 site might have problems with the default behavior.
2266 Implemented by Ulrich Drepper.
2268 * Iterating over entire database in NIS can be slow. With the
2269 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
2270 to trade time for memory. The entire database will be read at once.
2271 Implemented by Ulrich Drepper.
2273 * The interfaces introduced in RFC 3542 have been implemented by
2276 * Support for the new ELF hash table format was added by Ulrich Drepper.
2278 * Support for priority inheritance mutexes added by Jakub Jelinek and
2281 * Support for priority protected mutexes added by Jakub Jelinek.
2283 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
2284 or_IN, csb_PL, fy_NL, sr_ME.
2288 * More overflow detection functions.
2290 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
2291 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
2293 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
2294 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
2295 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
2296 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
2297 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
2298 by Masahide Washizawa.
2300 * It is now possible to install audit libraries for the dynamic linker using
2301 LD_AUDIT. Implemented by Ulrich Drepper.
2303 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
2304 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
2305 For a libc and libpthread that works well on Linux 2.4 kernels, we
2306 recommend using the stable 2.3 branch.
2308 * The new function open_wmemstream acts like open_memstream,
2309 but uses a wchar_t wide character buffer.
2311 * The new function ppoll is an improved version of poll, similar to pselect.
2313 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
2314 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
2315 renameat, unlinkat, linkat, symlinkat, readlinkat.
2317 * New Linux kernel system calls: unshare,
2318 inotify_init, inotify_add_watch, inotify_rm_watch.
2320 * The euidaccess function is now also known by the alias eaccess,
2321 for compatibility with some other systems.
2323 * Timezone data updated to 2006b version.
2327 * The following bugs are resolved with this release:
2329 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
2330 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
2331 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
2332 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
2333 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
2334 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
2336 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2338 * As of this release, GCC 4 can be used to compile the C Library.
2340 * Timezone data updated to 2005m version.
2344 * The following bugs are resolved with this release:
2346 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
2347 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
2348 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
2349 777, 787, 821, 822, 823, 825
2351 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2355 * Support for RFC 3678. Real implementations exist only for Linux so far.
2356 Implemented by Ulrich Drepper.
2358 * nscd can now cache entries persistently. Expiring entries are reloaded.
2359 For speedups the cache can be shared in memory with client processes.
2360 Implemented by Ulrich Drepper.
2362 * nscd can now perform SELinux checks.
2363 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
2365 * getaddrinfo queries are now cached. Canonical name lookup is performed
2367 Implemented by Ulrich Drepper.
2369 * The nothrow function attribute is used when headers are used by gcc when
2370 compiling C code. This can avoid significant amounts of exception
2373 * The malloc functions perform more error checking and are stricter when
2374 it comes to reacting on errors. The default action is to terminate
2375 the process after showing an error message. Implemented by Ulrich Drepper.
2377 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
2378 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
2380 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
2381 namespaces using the new function dlmopen(). This feature is of course,
2382 like most other dynamic loading functionality, not available in statically
2383 linked applications. Implemented by Ulrich Drepper.
2385 * Low-overhead boundary checking variants of string and some stdio functions
2386 were added. These are to be used in conjunction with a gcc patch by
2387 Jakub Jelinek which adds calls to these functions if possible.
2388 Implemented by Jakub Jelinek and Ulrich Drepper.
2390 * Old code for several operating systems and machine architectures that
2391 have not been in working condition in a long time have been removed from
2392 the main source tree maintained by the GNU C Library's maintainers.
2393 These files are now reside in the separate `ports' source module
2394 that is usable as an add-on when building the library.
2398 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
2399 interrogate the dynamic linker, compatible with the Solaris interface.
2401 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
2402 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
2404 * getifaddrs now uses the netlink interface on Linux to get its information.
2405 Implemented by Thorsten Kukuk.
2407 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
2408 Implemented by Ulrich Drepper.
2410 * support for non-executable stacks on x86 has been added. Changes mostly
2413 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
2416 * getaddrinfo now performs destination address selection according to
2421 * Thread-safe interfaces for many functions that access locale data
2422 were added in version 2.3, but these features were omitted from NEWS.
2423 Many functions have variants with an `_l' suffix that take a `locale_t'
2424 object as a parameter rather than consulting the current locale.
2425 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
2426 create and maintain `locale_t' objects. Additionally, the new function
2427 `uselocale' sets "the current locale" (as used by functions not so
2428 parameterized) set for an individual thread. These features were added
2429 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
2431 * The functions getresuid, getresgid, setresuid, and setresgid, which
2432 have long been available on Linux, are now declared in <unistd.h>
2433 and are now also available on the Hurd.
2435 * ELF thread-local storage support (TLS) now works on x86-64.
2437 * The new dynamic string token $LIB is expanded in shared library names.
2438 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
2440 * Aldy Hernandez contributed complete software floating point support for
2441 PowerPC machines with no FPU.
2443 * fexecve is implemented on Linux.
2445 * The `btowc' function should work at least twice as fast due to
2446 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
2448 * With approriate thread add-ons cancelable functions are now implemented
2449 in libc.so as well. No need to call the function in libpthread. This
2450 change allowed to finally disable the incorrect and expensive handling
2451 of weak definition in ld.so.
2453 * Yet more PLT entries in libc.so have been removed. We finally arrived
2454 at the bare minimum. Startup times improved appropriately.
2456 * Support for the new Linux/x86 system call interface was added. The
2457 AT_SYSINFO auxiliary vector entry is recognized and handled.
2461 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
2464 * iconv (the program and the interface) now accepts empty names (excluding
2465 options like //TRANSLIT) to mean "use charset of current locale".
2467 * localedef can now transliterate characters in strings which are not in
2468 the provided charmap. The information from the input locale is used.
2470 * Prelinking support was added for ELF targets. This requires additional
2471 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
2473 * Read-only stdio streams now use mmap to speed up operation by eliminating
2474 copying and buffer underflows. To use add 'm' to the mode string of
2475 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
2477 * The malloc functions were completely rewritten by Wolfram Gloger based
2478 on Doug Lea's malloc-2.7.0.c.
2480 * Isamu Hasegawa contributed a completely new and POSIX-conformant
2481 implementation of regex.
2483 * Bruno Haible upgraded the iconv and locale implementation to support
2486 * Contents of the LC_* and LANG environment variables in the CEN style are
2487 not recognized anymore. It never was used. Change by Ulrich Drepper.
2489 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
2490 thread-local storage (TLS) ABI on some platforms.
2491 Changes by Ulrich Drepper. SH support by Kaz Kojima.
2493 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
2494 EUC-JISX0213, and TSCII.
2496 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
2497 BSD-compatible interface for getting all network interface addresses.
2498 Implementation for IPv4 by Roland McGrath.
2500 * Loading of locale data is faster due to the introduction of a locale
2501 archive. Implemented by Roland McGrath and Ulrich Drepper.
2503 * Startup times are significantly reduced by not using exported functions
2504 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
2507 * Steven Munroe contributed a port to PowerPC64/Linux.
2511 * The Hurd now uses the GNU libio implementation of stdio rather than the
2512 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
2514 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
2515 with the same behavior as the Linux system call of the same name.
2519 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
2520 128-bit long double format.
2522 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
2523 IBM1161, and IBM1162 charsets.
2525 * Andreas Jaeger contributed a port to x86-64/Linux.
2527 * Peter Bruin contributed a port to PowerPC/Hurd.
2529 * libc functions using I/O streams now can handle wide-oriented streams
2532 * optimizations in the dynamic linker. Binaries created by recent binutils
2533 versions start up quicker due to reduced time spent on relocations.
2535 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
2539 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
2540 asinh, atanh, j0 for the 128-bit long double format.
2542 * Bruno Haible updated all the code handling Unicode in some form to
2543 support Unicode 3.1.
2545 * Speed of regex for single-byte locales is back to previous levels.
2546 Patch by Isamu Hasegawa.
2548 * Alpha, SPARC, and IA-64 now also using floating stacks.
2550 * Startup time of internationalized applications greatly improved through
2551 iconv cache. Use iconvconfig to generate the cache file.
2552 Contributed by Ulrich Drepper.
2554 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
2555 severe performance problems. Patch by David Mosberger.
2557 * The Hurd port got a lot more functionality like AIO, various stdio
2558 extensions, etc. Mainly done by Roland McGrath.
2560 * mtrace can now lookup symbols in shared libraries.
2564 * Intel's IA-64 math library is largely integrated. It provides fast and
2565 accurate implementatations for most basic and standard math functions
2566 in float, double, and long double format.
2568 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
2569 and asin for the 96-bit long double format and asin, log, tan for the
2570 128-bit long double format.
2572 * The beginning of a last-bit accurate math library by IBM Haifa were added.
2573 The basic double functions exist today. Contributed by Abraham Ziv
2574 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
2575 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
2577 * An asynchronous name lookup library was added. The interface is designed
2578 after POSIX AIO. The proposal was circulated beforehand to get comments.
2579 No negative ones came in. Implemented by Ulrich Drepper.
2581 * Port to S390/64bit contributed by Martin Schwidefsky
2582 <schwidefsky@de.ibm.com>.
2584 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
2585 of functions for Linux/IA-64.
2587 * The RPC code is now thread safe. Threads can now use the same service
2588 of different services at the same time. Patch by Eric Norum
2589 <eric.norum@usask.ca> with some help by Ulrich Drepper.
2591 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
2592 family of functions for Linux/S390.
2594 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
2595 of functions for Linux/x86.
2597 * Port to Linux/CRIS contributed by Axis Communications.
2601 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
2602 we can now check for namespace violations and missing declarations. The
2603 result is that almost all headers are now Unix-compliant (as defined in
2604 the upcoming XPG6). The negative side is that some programs might need
2605 corrections, too, if they depend on the incorrect form of the headers in
2606 previous versions which defined too many symbols and included too many
2609 * regex now handles multibyte character sets correctly.
2610 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
2612 * iconv (the program) does now conform to the upcoming XPG6 and handles
2613 charmaps. Instead of the charset names the path of charmaps can be
2614 provided and the conversion happens based on this data.
2615 Contributed by Ulrich Drepper.
2617 * The locale program now provides detailed information about the installed
2622 only lists the names of the supported locales
2626 provides details such as country, language, and codeset name.
2627 Contributed by Ulrich Drepper.
2631 * The gencat program now parses the input file according to the charset
2632 selected by the LC_CTYPE category. This is important for stateful
2633 character sets. To make generating catalogs easier there is a way
2634 to overwrite the charset selected by the locale: before the first
2635 message or $ quote line the catalog can contain a line like
2637 $ codeset=ISO-8859-2
2639 to select the charset (ISO-8859-2 in this case).
2641 Implemented by Shinya Hanataka and Ulrich Drepper.
2643 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
2644 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
2645 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
2647 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
2648 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
2650 * The LANGUAGE environment variable is now ignored unless the locale is
2651 changed from the default "C" locale.
2653 * The usual bug fixes.
2657 * Greg McGary added runtime support for bounds checking using gcc's
2658 new -fbounded-pointers option. ix86 target is complete. PowerPC
2661 * Thorsten Kukuk added secure mode support to nscd.
2663 * The Berkeley db libraries have been removed.
2665 Related, the nss_db module is now in a separate package since it
2666 obviously requires a database library being available.
2668 * Wide character I/O streams implemented by Ulrich Drepper.
2670 * Functions from the extended socket API added by Ulrich Drepper.
2672 * Functions feenableexcept and fedisableexcept to control the
2673 behaviour of individual exceptions have been added by Andreas Jaeger.
2675 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
2677 * The resolver code has been updated from bind 8.2.3-T5B which supports
2678 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
2681 This change could in some situations effect backward compatibility. Since
2682 now `_res' is a thread-local instead of a global variable, modifying it
2683 in one thread does not have any effect in other threads.
2685 The resolver library was also extended to allow IPv6 as the transport
2686 protocol for the requests. This work was done by Stig Venaas.
2688 * Compatibility code for K&R C compilers has been removed from the
2689 header files. A ISO C compiler is needed to use the library
2690 (conforming to either C89 or C99 standard).
2692 * Complete rewrite of the localedef program to support multibyte character
2693 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
2694 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
2695 Implemented by Ulrich Drepper.
2697 Bruno Haible significantly improved the generation and use of the data
2698 structures for the wide character tables.
2700 * Plural handling in gettext implemented by Ulrich Drepper.
2702 * The utmp daemon has been removed.
2704 * The port to MIPS-Linux has been finished by Andreas Jaeger.
2706 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
2709 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
2711 * POSIX barriers implemented by Kaz Kylheku.
2713 * POSIX spawn function family implemented by Ulrich Drepper.
2715 * POSIX spinlocks are now available.
2717 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
2719 * the configure option --enable-kernel=X.Y.Z allows to strip out
2720 compatibility for kernel versions before X.Y.Z. This is currently only
2721 implemented for Linux.
2723 * the sockaddr_in6 structure changed. The IPv6 working group added a new
2724 field sin6_scope_id. This means that all programs using IPv6 should be
2725 recompiled. Don't expect binary compatibility with previous glibc
2728 * various conversion modules for IBM character sets contributed by
2731 * IA-64 port by Jes Sorensen and HJ Lu.
2745 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
2747 * New xdr functions are added; some rpc functions are now 64bit clean.
2749 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
2751 * Fixed known incompatibilities with glibc 2.0.
2753 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
2755 * Optimized a number of functions (especially the ELF dynamic loader).
2757 * Update timezone data files.
2759 * lots of charmaps corrections
2761 * some new locale definitions and charmaps
2766 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
2767 conform to POSIX member type requirements. Symbol versions have been
2768 adjusted as needed within the library, and for direct use by applications,
2769 but there is potential for problems if third-party libraries use
2770 struct timeval as part of their interface. This does not present
2771 a problem for X and other "essential" system libraries.
2773 * An additional locale model to support C++ Standard Library locale
2774 model and probably more was implemented by Ulrich Drepper.
2776 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
2779 * Miles Bader provided the `argp' function family to support hierachical
2780 command line argument parsing, layered on top of getopt.
2782 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
2784 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
2787 * scanf recognizes the %a and %A format for scanning floating point numbers.
2789 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
2790 information and interfaces for the available integer types.
2792 * about 130 new math functions were added to implement the ISO C9x math
2795 * the new header <complex.h> contains definitions of the complex math
2796 functions from ISO C 9X.
2798 * the new header <tgmath.h> defines generic macros to use complex or
2799 real valued functions.
2801 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
2803 * Andreas Jaeger provided a test suite for the math library.
2805 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
2807 * Ulrich Drepper added character set conversion functions (iconv).
2809 * Optimized string functions have been added.
2811 * The localedata addon is now part of glibc.
2813 * An implementation of profiling shared libraries was added by Ulrich Drepper.
2815 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
2816 daemon for NSS (nscd).
2818 Missing a better place here are some numbers on improvements. Under
2819 Linux 2.1.125 un-tar-ing the kernel sources takes
2823 using local files 12.19s 6.88s 22.91s
2825 using NIS 13.92s 8.91s 26.34s
2827 using NIS & nscd 10.37s 7.34s 25.30s
2829 using NIS+ 27.57s 30.37s 640.46s
2831 using NIS+ & nscd 10.25s 7.83s 26.51s
2833 using NIS & old nscd [1] 13.83s 8.32s 29.60s
2835 Keep in mind that non-namelookup related operations dominate above times.
2836 It was just a common complain that using NIS+ unpacking the kernel is
2839 [1] The old nscd implementation is not available anymore since it was
2840 distributed with glibc up to version 2.0.98 and thus is now replaced.
2842 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
2844 * Mark Kettenis provided a Hesiod NSS module.
2846 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
2847 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
2849 * rcmd can now handle netgroups (Dick Streefland).
2851 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
2854 * Support for the IPv6 protocol has been added to the socket API, as per the
2855 latest draft standards.
2857 * Support for Linux 2.2 has been added.
2859 * Interface changes relative to the latest 2.0.x release:
2860 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2861 addseverity NEW: Unix98
2862 alphasort64 NEW: LFS
2863 argp_err_exit_status NEW: argp, GNU ext
2864 argp_error NEW: argp, GNU ext
2865 argp_failure NEW: argp, GNU ext
2866 argp_help NEW: argp, GNU ext
2867 argp_parse NEW: argp, GNU ext
2868 argp_program_bug_address NEW: argp, GNU ext
2869 argp_program_version NEW: argp, GNU ext
2870 argp_program_version_hook NEW: argp, GNU ext
2871 argp_state_help NEW: argp, GNU ext
2872 argp_usage NEW: argp, GNU ext
2873 authdes_create NEW: Secure RPC
2874 authdes_getucred NEW: Secure RPC
2875 authdes_pk_create NEW: Secure RPC
2876 backtrace NEW: GNU ext.
2877 backtrace_symbols NEW: GNU ext.
2878 backtrace_symbols_fd NEW: GNU ext.
2880 cacosf NEW: ISO C 9x
2881 cacosh NEW: ISO C 9x
2882 cacoshf NEW: ISO C 9x
2883 cacoshl NEW: ISO C 9x
2884 cacosl NEW: ISO C 9x
2891 casinf NEW: ISO C 9x
2892 casinh NEW: ISO C 9x
2893 casinhf NEW: ISO C 9x
2894 casinhl NEW: ISO C 9x
2895 casinl NEW: ISO C 9x
2897 catanf NEW: ISO C 9x
2898 catanh NEW: ISO C 9x
2899 catanhf NEW: ISO C 9x
2900 catanhl NEW: ISO C 9x
2901 catanl NEW: ISO C 9x
2902 cbc_crypt NEW: Secure RPC
2906 ccoshf NEW: ISO C 9x
2907 ccoshl NEW: ISO C 9x
2913 cimagf NEW: ISO C 9x
2914 cimagl NEW: ISO C 9x
2915 clearerr_locked REMOVED
2916 clntunix_create NEW: sunrpc ext
2918 clog10 NEW: ISO C 9x
2919 clog10f NEW: ISO C 9x
2920 clog10l NEW: ISO C 9x
2930 cprojf NEW: ISO C 9x
2931 cprojl NEW: ISO C 9x
2933 crealf NEW: ISO C 9x
2934 creall NEW: ISO C 9x
2939 csinhf NEW: ISO C 9x
2940 csinhl NEW: ISO C 9x
2943 csqrtf NEW: ISO C 9x
2944 csqrtl NEW: ISO C 9x
2948 ctanhf NEW: ISO C 9x
2949 ctanhl NEW: ISO C 9x
2951 des_setparity NEW: Secure RPC
2952 ecb_crypt NEW: Secure RPC
2953 endutxent NEW: Unix98
2955 exp10f NEW: ISO C 9x
2956 exp10l NEW: ISO C 9x
2960 fattach NEW: STREAMS
2961 fdetach NEW: STREAMS
2965 feclearexcept NEW: ISO C 9x
2966 fegetenv NEW: ISO C 9x
2967 fegetexceptflag NEW: ISO C 9x
2968 fegetround NEW: ISO C 9x
2969 feholdexcept NEW: ISO C 9x
2971 feraiseexcept NEW: ISO C 9x
2972 ferror_locked REMOVED
2973 fesetenv NEW: ISO C 9x
2974 fesetexceptflag NEW: ISO C 9x
2975 fesetround NEW: ISO C 9x
2976 fetestexcept NEW: ISO C 9x
2977 feupdateenv NEW: ISO C 9x
2978 fflush_locked REMOVED
2982 fgets_unlocked NEW: GNU ext.
2983 fileno_locked REMOVED
2995 fputc_locked REMOVED
2996 fputs_unlocked NEW: GNU ext.
2997 fread_unlocked NEW: GNU ext.
3002 fstatvfs NEW: Unix98
3006 ftruncate64 NEW: LFS
3008 fwrite_unlocked NEW: GNU ext.
3009 gai_strerror NEW: IPv6
3013 getchar_locked REMOVED
3015 getdate_err NEW: Unix98
3016 getdate_r NEW: GNU ext.
3018 getnameinfo NEW: IPv6
3019 getnetname NEW: Secure RPC
3020 getpmsg NEW: STREAMS
3021 getpt NEW: Unix98 PTY
3022 getrlimit64 NEW: LFS
3023 getutxent NEW: Unix98
3024 getutxid NEW: Unix98
3025 getutxline NEW: Unix98
3026 glob64 NEW: GNU ext.
3027 globfree64 NEW: GNU ext.
3028 gnu_get_libc_release NEW: GNU ext.
3029 gnu_get_libc_version NEW: GNU ext.
3030 grantpt NEW: Unix98 PTY
3031 host2netname NEW: Secure RPC
3033 iconv_close NEW: iconv
3034 iconv_open NEW: iconv
3035 if_freenameindex NEW: IPv6
3036 if_indextoname NEW: IPv6
3037 if_nameindex NEW: IPv6
3038 if_nametoindex NEW: IPv6
3039 in6addr_any NEW: IPv6
3040 in6addr_loopback NEW: IPv6
3041 inet6_isipv4mapped NEW: IPv6
3042 isastream NEW: STREAMS
3043 iswblank NEW: GNU ext.
3044 key_decryptsession NEW: Secure RPC
3045 key_decryptsession_pk NEW: Secure RPC
3046 key_encryptsession NEW: Secure RPC
3047 key_encryptsession_pk NEW: Secure RPC
3048 key_gendes NEW: Secure RPC
3049 key_get_conv NEW: Secure RPC
3050 key_secretkey_is_set NEW: Secure RPC
3051 key_setnet NEW: Secure RPC
3052 key_setsecret NEW: Secure RPC
3053 llrint NEW: ISO C 9x
3054 llrintf NEW: ISO C 9x
3055 llrintl NEW: ISO C 9x
3056 llround NEW: ISO C 9x
3057 llroundf NEW: ISO C 9x
3058 llroundl NEW: ISO C 9x
3063 lrintf NEW: ISO C 9x
3064 lrintl NEW: ISO C 9x
3065 lround NEW: ISO C 9x
3066 lroundf NEW: ISO C 9x
3067 lroundl NEW: ISO C 9x
3069 makecontext NEW: Unix98
3070 mempcpy NEW: GNU ext.
3073 modify_ldt NEW: kernel
3077 nearbyint NEW: ISO C 9x
3078 nearbyintf NEW: ISO C 9x
3079 nearbyintl NEW: ISO C 9x
3080 netname2host NEW: Secure RPC
3081 netname2user NEW: Secure RPC
3082 nexttoward NEW: ISO C 9x
3083 nexttowardf NEW: ISO C 9x
3084 nexttowardl NEW: ISO C 9x
3088 passwd2des NEW: Secure RPC
3090 pow10f NEW: GNU ext.
3091 pow10l NEW: GNU ext.
3094 printf_size NEW: GNU ext.
3095 printf_size_info NEW: GNU ext.
3096 profil_counter REMOVED
3097 pthread_mutexattr_getkind_np REPLACED
3098 pthread_mutexattr_setkind_np REPLACED
3099 ptsname NEW: Unix98 PTY
3100 ptsname_r NEW: Unix98 PTY
3102 putchar_locked REMOVED
3103 putgrent NEW: GNU ext.
3105 putpmsg NEW: STREAMS
3106 pututxline NEW: Unix98
3110 readdir64_r NEW: LFS
3111 remquo NEW: ISO C 9x
3112 remquof NEW: ISO C 9x
3113 remquol NEW: ISO C 9x
3115 roundf NEW: ISO C 9x
3116 roundl NEW: ISO C 9x
3118 scalbln NEW: ISO C 9x
3119 scalblnf NEW: ISO C 9x
3120 scalblnl NEW: ISO C 9x
3122 sendfile NEW: kernel
3123 setcontext NEW: Unix98
3124 setrlimit64 NEW: LFS
3125 setutxent NEW: Unix98
3127 sigignore NEW: Unix98
3128 sigqueue NEW: POSIX.1b
3129 sigrelse NEW: Unix98
3130 sigset NEW: POSIX.1b
3131 sigtimedwait NEW: POSIX.1b
3132 sigwaitinfo NEW: POSIX.1b
3133 sincos NEW: GNU ext.
3134 sincosf NEW: GNU ext.
3135 sincosl NEW: GNU ext.
3139 strcasestr NEW: GNU ext.
3140 strtoimax NEW: ISO C 9x
3141 strtoumax NEW: ISO C 9x
3142 strverscmp NEW: GNU ext.
3143 svcauthdes_stats NEW: Secure RPC
3144 svcunix_create NEW: sunrpc etx
3145 svcunixfd_create NEW: sunrpc ext
3146 swapcontext NEW: Unix98
3147 tcgetsid NEW: Unix98 PTY
3148 tdestroy NEW: GNU ext.
3149 tgamma NEW: ISO C 9x
3150 tgammaf NEW: ISO C 9x
3151 tgammal NEW: ISO C 9x
3155 truncf NEW: ISO C 9x
3156 truncl NEW: ISO C 9x
3158 unlockpt NEW: Unix98 PTY
3159 updwtmpx NEW: Unix98
3160 user2netname NEW: Secure RPC
3161 utmpxname NEW: Unix98
3162 versionsort NEW: GNU ext.
3163 versionsort64 NEW: GNU ext.
3165 wcscasecmp NEW: GNU ext.
3166 wcsncasecmp NEW: GNU ext.
3167 wcsnlen NEW: GNU ext.
3168 wcstoimax NEW: ISO C 9x
3169 wcstoll NEW: ISO C 9x
3170 wcstoull NEW: ISO C 9x
3171 wcstoumax NEW: ISO C 9x
3173 wordexp NEW: POSIX.2
3174 wordfree NEW: POSIX.2
3175 write_profiling REMOVED
3176 xdecrypt NEW: Secure RPC
3177 xdr_authdes_cred NEW: Secure RPC
3178 xdr_authdes_verf NEW: Secure RPC
3179 xdr_cryptkeyarg NEW: Secure RPC
3180 xdr_cryptkeyarg2 NEW: Secure RPC
3181 xdr_cryptkeyres NEW: Secure RPC
3182 xdr_getcredres NEW: Secure RPC
3183 xdr_key_netstarg NEW: Secure RPC
3184 xdr_key_netstres NEW: Secure RPC
3185 xdr_keybuf NEW: Secure RPC
3186 xdr_keystatus NEW: Secure RPC
3187 xdr_netnamestr NEW: Secure RPC
3188 xdr_sizeof NEW: Secure RPC
3189 xdr_unixcred NEW: sunrpc ext
3190 xencrypt NEW: Secure RPC
3191 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3202 * inet_ntoa is thread-safe
3204 * updwtmp is moved from libutil to libc
3206 * rewrite of cbrt function
3208 * update of timezone data
3222 * add atoll function
3224 * fix complex problems in Berkeley DB code
3226 * fix math functions
3230 * fixed lots of header problems (especially Linux/GNU specific)
3232 * dynamic loader preserves all registers
3234 * Roland McGrath provided support for handling of auxiliary objects in
3235 the ELF dynamic loader.
3237 * support for parallel builds is improved
3241 * GNU extensions are no longer declared by default. To enable them you
3242 must define the macro `_GNU_SOURCE' in your program or compile with
3245 * The library has changed from using GNU ld symbol aliases to using weak
3246 symbols where available. The ELF object file format supports weak
3247 symbols; GNU ld also supports weak symbols in the a.out format. (There
3248 is also now support for other GNU ld extensions in ELF. Use the
3249 `--with-elf' option to configure to indicate you have ELF, and
3250 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
3251 of many files which contained only symbol aliases, reducing the size of
3252 the source and the compiled library; many other files were renamed to
3253 less cryptic names previously occupied by the symbol alias files.
3254 There is a new header file <elf.h> for programs which operate on
3255 files in the ELF format.
3257 * Converted to Autoconf version 2, so `configure' has more options.
3258 Run `configure --help' to see the details.
3260 * The library can now be configured to build profiling, highly-optimized
3261 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
3262 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
3263 `configure' enable building these extra libraries. The shared library is
3264 built by default when using both ELF and GNU ld. When shared libraries
3265 are enabled, the new library `-ldl' is available for arbitrary run-time
3266 loading of shared objects; its interface is defined in <dlfcn.h>. The
3267 new header file <link.h> gives access to the internals of the run-time
3268 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
3269 application of same name on other systems and it provides information
3270 about dynamically linked binaries.
3272 * The C library now provides the run-time support code for profiling
3273 executables compiled with `-pg'. Programs can control the profiling code
3274 through the interface in <sys/gmon.h>. The `gmon.out' files written by
3275 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
3276 the support for this file format was contributed by David Mosberger-Tang.
3278 * The math code has been replaced with a math library based on fdlibm from
3279 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
3280 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
3281 functions. The math functions now reside in a separate library, so
3282 programs using them will need to use `-lm' their linking commands.
3284 * John C. Bowman contributed optimized ix87 assembler inline functions.
3286 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
3287 mechanism similar to that found in Solaris 2. This is now used for the
3288 group, passwd, hosts, networks, services, protocols, rpc, ethers,
3289 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
3290 file controls what services are used for each individual database. This
3291 works by loading shared libraries with names specified in `nsswitch.conf',
3292 so service modules can be changed or added at any time without even
3293 relinking any program. Currently there are the file, db, and NIS based
3294 NSS services available.
3296 * The new functions `strtoq' and `strtouq' parse integer values from
3297 strings, like `strtol' and `strtoul', but they return `long long int' and
3298 `unsigned long long int' values, respectively (64-bit quantities).
3300 * The new functions `strtof' and `strtold' parse floating-point values from
3301 strings, like `strtod', but they return `float' and `long double' values,
3302 respectively (on some machines `double' and `long double' are the same).
3304 * Ulrich Drepper has contributed new implementations of the floating-point
3305 printing and reading code used in the `printf' family of functions and
3306 `strtod', `strtof', and `strtold'. These new functions are perfectly
3307 accurate, and much faster than the old ones.
3309 * The implementation of the POSIX locale model was completely rewritten by
3310 Ulrich Drepper. This includes the new programs `localedef' and `locale'
3311 to compile the POSIX locale definition.
3313 * The former dummy implementations of the strcoll and strxfrm function are
3314 now replaced by fully functional code contributed by Ulrich Drepper. The
3315 collation information comes from the POSIX locale definitions.
3317 * The new header <langinfo.h> defines an interface for accessing
3318 various locale-dependent data (using the locale chosen with `setlocale').
3320 * Ulrich Drepper has contributed a new suite of functions for operation on
3321 wide-character and multibyte-character strings, in <wchar.h>;
3322 and classification and case conversion of wide characters, in <wctype.h>.
3323 These new functions are conforming to the ISO C, Amendement 1 specification.
3325 * There is now a second implementation of the standard I/O library available.
3326 It comes from GNU libg++ as was written by Per Bothner, heavily modified
3327 by Hongjiu Lu and made thread safe by Ulrich Drepper.
3329 * You can now use positional parameter specifications in format strings
3330 for the `printf' and `scanf' families of functions. For example,
3331 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
3332 ``Number 6, Mr Jones''. This is mainly useful when providing different
3333 format strings for different languages, whose grammars may dictate
3334 different orderings of the values being printed. To support this
3335 feature, the interface for `register_printf_handler' has changed; see
3336 the header file <printf.h> for details.
3338 * The `printf' and `scanf' families of functions now understand a new
3339 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
3340 to group numbers as indicated by the locale; for `scanf' and friends, this
3341 says to accept as valid only a number with all the proper grouping
3342 separators in the right places. In the default "C" locale, numbers are
3343 not grouped; but locales for specific countries will define the usual
3344 conventions (i.e. separate thousands with `,' in the US locale).
3346 * The pgrp functions have been regularized, slightly incompatibly but much
3347 less confusingly. The core functions are now `getpgid' and `setpgid',
3348 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
3349 argument) and BSD `setpgrp' (identical to `setpgid') functions are
3350 provided for compatibility. There is no longer an incompatible `getpgrp'
3351 with an argument declared under _BSD_SOURCE; no BSD code uses it.
3353 * The new header file <fts.h> and suite of functions simplify programs that
3354 operate on directory trees. This code comes from 4.4 BSD.
3356 * The resolver code has been updated from the BIND 4.9.5-P1 release.
3357 Parts of the code were heavily modified by Ulrich Drepper to fit in the
3358 NSS scheme used in glibc.
3360 * There is a new malloc debugging hook `__memalign_hook'.
3362 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
3363 `unsigned int' in <sys/types.h>. These are for compatibility only and
3364 their use is discouraged.
3366 * The `-lmcheck' library to enable standard malloc debugging hooks is now
3367 done differently, so that it works even without GNU ld.
3369 * New function `euidaccess' checks allowed access to a file like `access',
3370 but using the effective IDs instead of the real IDs.
3372 * The time zone data files have been updated for the latest and greatest
3373 local time conventions of the countries of the world.
3375 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
3378 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
3379 for formatting floating-point numbers. They are provided only for
3380 compatibility; new programs should use `sprintf' instead. There are
3381 also equivalent function for the `long double' floating-point type and
3382 all functions also exist in a reentrant form.
3384 * The new auxiliary library `-lutil' from 4.4 BSD contains various
3385 functions for maintaining the login-record files (primarily of use to
3386 system programs such as `login'), and convenient functions for
3387 allocating and initializing a pseudo-terminal (pty) device.
3389 * Ulrich Drepper has contributed new support for System V style
3390 shared memory and IPC on systems that support it.
3392 * Ulrich Drepper has contributed several miscellaneous new functions found
3393 in System V: The `hsearch' family of functions provide an effective
3394 implementation of hash tables; `a64l' and `l64a' provide a very simple
3395 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
3398 * Ulrich Drepper has contributed new reentrant counterparts for the
3399 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
3401 * Ulrich Drepper has contributed new, highly-optimized versions of several
3402 string functions for the i486/Pentium family of processors.
3404 * Ulrich Drepper has updated the Linux-specific code, based largely
3405 on work done in Hongjiu Lu's version of GNU libc for Linux.
3406 The GNU library now supports Linux versions 2.0.10 and later,
3407 using the ELF object file format (i[3456]86-*-linux).
3409 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
3411 * David Mosberger-Tang and Richard Henderson have ported the C library
3412 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
3413 dynamic linking support for ELF/Alpha.
3415 * Richard Henderson contributed several Alpha optimized assembler function
3416 for arithmetic and string handling.
3418 * Ulrich Drepper has contributed a new set of message catalog functions to
3419 support multiple languages using the <libintl.h> interface, for use with
3420 his new package GNU gettext. Translation volunteers have contributed
3421 catalogs of the library's messages in Spanish, German, and Korean.
3423 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
3424 program and the `catgets' function for reading the catalog files it
3425 creates. (The <libintl.h> interface is preferred; we include the
3426 <nl_types.h> interface using `catgets' only for source compatibility with
3427 programs already written to use it.)
3429 * New header file <values.h> gives SVID-compatible names for <limits.h>
3432 * Various new macros, declarations, and small header files for compatibility
3435 * New function `group_member' is a convenient way to check if a process has
3436 a given effective group ID.
3438 * When using GCC 2.7 and later, the socket functions are now declared in a
3439 special way so that passing an argument of type `struct sockaddr_in *',
3440 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
3441 `struct sockaddr *' type, does not generate a type-clash warning.
3443 * New function `error' declared in header file <error.h> is a convenient
3444 function for printing error messages and optionally exiting; this is the
3445 canonical function used in GNU programs. The new functions `err', `warn',
3446 and friends in header file <err.h> are the canonical 4.4 BSD interface for
3447 doing the same thing.
3449 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
3450 POSIX.2 `glob' function to do ~ and {...} expansion.
3452 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
3453 `clearenv' which is used in POSIX.9 is also available.
3455 * New function `getsid' returns session ID number on systems that support it.
3457 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
3458 files <db.h> and <mpool.h> provide a rich set of functions for several
3459 types of simple databases stored in memory and in files, and <ndbm.h> is
3460 an old `ndbm'-compatible interface using the `db' functions. Link with
3461 `-ldb' to get these functions.
3463 * New macro `strdupa' copies a string like `strdup', but uses local stack
3464 space from `alloca' instead of dynamic heap space from `malloc'.
3466 * New function `strnlen' is like `strlen' but searches only a given maximum
3467 number of characters for the null terminator. `stpncpy', `strndup' and
3468 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
3471 * New function `statfs' in header <sys/statfs.h>.
3473 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
3474 provide convenient functions for operating on blocks of null-terminated
3477 * A new suite of functions in <utmp.h> handle all the details of reading
3478 and writing the utmp file.
3480 * An implementation of the NIS/YP(tm) based NSS service was contributed by
3483 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
3484 completely POSIX compliant and also implemented the extended functionality
3485 to handle alternate digit representation and alternate era date formats.
3487 * Ulrich Drepper provided an implementation of the `strptime' function
3488 defined in XPG4.2 which transforms a string into a `struct tm' value.
3490 * Paul Eggert provided the tzselect shell script as part of the timezone
3491 code. The shell script makes it easy to select the correct timezone
3494 * The implementation of the malloc family of functions is completely replaced
3495 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
3496 The implementation uses the mmap function (if available) and it is
3497 optimized for the use in multi threaded programs.
3499 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
3500 functions. This new functionality is usable by specifying a special
3501 salt string and it is compatible with implementation on *BSD systems.
3503 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
3504 `getsubopt' to handle second level command line options, `bsd_signal'
3505 to access BSD style `signal' functionality, the obsolete `regexp' style
3508 * the `lchown' function is available on system which support this
3511 * The implementation of the shadow password handling function was contributed
3514 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
3516 * POSIX.1g support was added. The <sys/select.h> header is available,
3517 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
3518 implementation of `getaddrinfo'.
3522 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
3524 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
3525 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
3527 * The new function `daemon' from 4.4 BSD is useful for server programs that
3528 want to put themselves in the background.
3530 * Joel Sherrill has contributed support for several standalone boards that
3531 run without an operating system.
3533 * `printf', `scanf' and friends now accept a `q' type modifier for long
3534 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
3536 * All of the code taken from BSD (notably most of the math and networking
3537 routines) has been updated from the BSD 4.4-Lite release.
3539 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
3541 * The new functions `getdomainname' and `setdomainname' fetch or change the
3542 YP/NIS domain name. These are system calls which exist on systems which
3545 * The time zone data files have been updated for the latest international
3548 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
3549 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
3553 * The C library now includes support for Sun RPC, from Sun's free
3554 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
3555 are included. (There is still no support for YP.)
3557 * Tom Quinn has contributed a port of the C library to SGI machines running
3558 Irix 4 (mips-sgi-irix4).
3560 * The new `lockf' function is a simplified interface to the locking
3561 facilities of `fcntl', included for compatibility.
3563 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
3565 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
3567 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
3570 * The error message printed by `assert' for a failed assertion now includes
3571 the name of the program (if using GNU ld) and the name of the calling
3572 function (with versions of GCC that support this).
3574 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
3576 * The library now includes the <sys/mman.h> header file and memory
3577 management functions `mmap', `munmap', `mprotect', `msync', and
3578 `madvise', on systems that support those facilities.
3580 * The interface for `mcheck' has changed slightly: the function called to
3581 abort the program when an allocation inconsistency is detected now takes
3582 an argument that indicates the type of failure. The new function
3583 `mprobe' lets you request a consistency check for a particular block at
3584 any time (checks are normally done only when you call `free' or `realloc'
3587 * It is now possible to easily cross-compile the C library, building on one
3588 system a library to run on another machine and/or operating system. All
3589 you need to do is set the variable `HOST_CC' in `configparms' to the
3590 native compiler for programs to run on the machine you are building on (a
3591 few generator programs are used on Unix systems); set `CC' to the
3594 * The new function `fexecve' (only implemented on the GNU system) executes
3595 a program file given a file descriptor already open on the file.
3599 * Brendan Kehoe has contributed most of a port to the DEC Alpha
3600 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
3602 * You can set the variable `libprefix' in `configparms' to specify a prefix
3603 to be prepended to installed library files; this makes it easy to install
3604 the GNU C library to be linked as `-lgnuc' or whatever.
3606 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
3607 copies a limited number of characters from a string, and returns the
3608 address of the last character written.
3610 * You no longer need to check for whether the installed `stddef.h' is
3611 compatible with the GNU C library. configure now checks for you.
3613 * You can now define a per-stream `fileno' function to convert the
3614 stream's cookie into an integral file descriptor.
3616 * ``malloc (0)'' no longer returns a null pointer. Instead, it
3617 allocates zero bytes of storage, and returns a unique pointer which
3618 you can pass to `realloc' or `free'. The behavior is undefined if
3619 you dereference this pointer.
3621 * The C library now runs on Sony NEWS m68k machines running either
3622 NewsOS 3 or NewsOS 4.
3624 * The new `syscall' function is a system-dependent primitive function
3625 for invoking system calls. It has the canonical behavior on Unix
3626 systems, including unreliable return values for some calls (such as
3627 `pipe', `fork' and `getppid').
3629 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
3630 to `EAGAIN', which is the preferred name. On systems whose kernels
3631 use two distinct codes, the C library now translates EWOULDBLOCK to
3632 EAGAIN in every system call function.
3636 * The GNU C Library Reference Manual is now distributed with the library.
3637 `make dvi' will produce a DVI file of the printed manual.
3638 `make info' will produce Info files that you can read on line using C-h i
3639 in Emacs or the `info' program.
3640 Please send comments on the manual to bug-glibc-manual@gnu.org.
3642 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
3644 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
3646 * Jason Merrill has contributed a port to the Sequent Symmetry running
3647 Dynix version 3 (i386-sequent-dynix).
3649 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
3650 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
3652 * New function `memory_warnings' lets you arrange to get warnings when
3653 malloc is running out of memory to allocate, like Emacs gives you.
3655 * The C library now contains the relocating allocator used in Emacs 19 for
3656 its editing buffers. This allocator (ralloc) minimizes allocation
3657 overhead and fragmentation by moving allocated regions around whenever it
3658 needs to. You always refer to a ralloc'd region with a "handle" (a
3659 pointer to a pointer--an object of type `void **').
3661 * There is a new `printf' format: `%m' gives you the string corresponding
3662 to the error code in `errno'.
3664 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
3665 or `%[' conversion, but instead of filling in a fixed-sized buffer you
3666 pass, the `a' modifier says to fill in a `char **' you pass with a
3669 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
3670 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
3671 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
3673 * `mkstemp' is a traditional Unix function to atomically create and open a
3674 uniquely-named temporary file.
3678 * The standard location for the file that says what the local timezone is
3679 has changed again. It is now `/usr/local/etc/localtime' (or more
3680 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
3682 * The distribution no longer contains any files with names longer than 14
3685 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
3686 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
3688 * New functions `ttyslot' and `syslog' from 4.4 BSD.
3692 * The configuration process has changed quite a bit. The `configure'
3693 script is now used just like the configuration scripts for other GNU
3694 packages. The `sysdeps' directory hierarchy is much rearranged.
3695 The file `INSTALL' explains the new scheme in detail.
3697 * The header files no longer need to be processed into ANSI C and
3698 traditional C versions. There is just one set of files to install, and
3699 it will work with ANSI or old C compilers (including `gcc -traditional').
3701 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
3702 MIPS DECStation running Ultrix 4.
3704 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
3705 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
3706 made itself into a shared library.
3708 * Yet further improved support for the i386, running 4.3 BSD-like systems
3709 (such as Mach 3 with the Unix single-server), or System V.
3711 * New function `strncasecmp' to do case-insensitive string comparison
3712 with limited length.
3714 * New function `strsep' is a reentrant alternative to `strtok'.
3716 * New functions `scandir' and `alphasort' for searching directories.
3718 * New function `setenv' is a better interface to `putenv'.
3720 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
3721 function for traversing a directory tree.
3723 * The GNU obstack package is now also part of the C library.
3724 The new function `open_obstack_stream' creates a stdio stream that
3725 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
3726 formatted output directly to an obstack.
3728 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
3729 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
3731 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
3733 * The new functions `strfry' and `memfrob' do mysterious and wonderful
3734 things to your strings.
3736 * There are some new test programs: test-fseek, testmb, and testrand.
3738 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
3739 These ports are not finished, but are a good starting place for really
3740 supporting those systems.
3742 * `/etc/localtime' is now the standard location for the file that says what
3743 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
3744 This follows the general principle that `/etc' is the place for all local
3745 configuration files.
3747 * The C library header files now use `extern "C"' when used by the C++
3748 compiler, so the C library should now work with C++ code.
3750 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
3751 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
3754 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
3755 function which uses the `merge sort' algorithm, and is said to be
3756 significantly faster than the old GNU `qsort' function. Merge sort is
3757 now the standard `qsort' function. The new algorithm can require a lot
3758 of temporary storage; so, the old sorting function is called when the
3759 required storage is not available.
3761 * The C library now includes Michael Glad's Ultra Fast Crypt, which
3762 provides the Unix `crypt' function, plus some other entry points.
3764 * The code and header files taken from 4.4 BSD have been updated with the
3765 latest files released from Berkeley.
3767 ----------------------------------------------------------------------
3768 Copyright information:
3770 Copyright (C) 1992-2017 Free Software Foundation, Inc.
3772 Permission is granted to anyone to make or distribute verbatim copies
3773 of this document as received, in any medium, provided that the
3774 copyright notice and this permission notice are preserved,
3775 thus giving the recipient permission to redistribute in turn.
3777 Permission is granted to distribute modified versions
3778 of this document, or of portions of it,
3779 under the above conditions, provided also that they
3780 carry prominent notices stating who last changed them.
3783 version-control: never