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 * Extensive new collation tests for Hungarian locales based on
41 "The Rules of Hungarian Orthography, 12th edition" and the work of
42 Egmont Koblinger (Bug 18934).
44 * The DNS stub resolver no longer performs EDNS fallback. If EDNS or DNSSEC
45 support is enabled, the configured recursive resolver must support EDNS.
46 (Responding to EDNS-enabled queries with responses which are not
47 EDNS-enabled is fine, but FORMERR responses are not.)
49 * res_mkquery and res_nmkquery no longer support the IQUERY opcode. DNS
50 servers have not supported this opcode for a long time.
52 * The legacy cfree function has been removed. Applications should use the
53 free function instead.
55 * posix_spawnattr_setflags now supports POSIX_SPAWN_SETSID flag to create a
56 new session ID for the posix_spawn and posix_spawnp. It is scheduled to
57 be added on next major revision of POSIX, so current support is enabled
60 * The minimum Linux kernel version that this version of the GNU C Library
61 can be used with on i[4567]86 and x86_64 is 3.2. A Linux 3.2 or later
62 kernel was already required on all other architectures.
64 * The obsolete <sys/ultrasound.h> header file has been removed.
66 * The port to Native Client running on ARMv7-A (--host=arm-nacl) has been
69 * The reallocarray function has been added to libc. It is a realloc
70 replacement with a check for integer overflow when calculating total
73 * New preadv2 and pwritev2 has been added. They are Linux extensions to
74 preadv and pwritev with an additional flag argument where it is possible
75 to set high priority or use O_DSYNC or O_SYNC for a specific IO operation.
76 For complete support it requires Linux kernel version 4.6, otherwise a
77 compat implementation will be used (which refuses all flags and routes it
78 to preadv or pwritev).
80 * The stack_t type no longer has the name struct sigaltstack. This changes
81 the C++ name mangling for interfaces involving this type.
83 Security related changes:
85 * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
86 to avoid fragmentation-based spoofing attacks.
88 The following bugs are resolved with this release:
90 [The release manager will add the list generated by
91 scripts/list-fixed-bugs.py just before the release.]
96 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
97 24731-2:2010, is supported to enable declarations of functions from that
98 TR. Note that not all functions from that TR are supported by the GNU C
101 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
102 18661-1:2014, is supported to enable declarations of functions and macros
103 from that TS. Note that not all features from that TS are supported by
106 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
107 18661-4:2015, is supported to enable declarations of functions and macros
108 from that TS. Note that most features from that TS are not supported by
111 * The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
112 now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
113 Since the GNU C Library defaults to a much newer revision of POSIX, this
114 will only affect programs that specifically request an old conformance
115 mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
116 see a change in the visible declarations, but a program compiled with
117 just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
120 Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
121 defined by all multithreaded code, but glibc has not required this for
124 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
125 means that in a future release, the macros “major”, “minor”, and “makedev”
126 will only be available from <sys/sysmacros.h>.
128 These macros are not part of POSIX nor XSI, and their names frequently
129 collide with user code; see for instance glibc bug 19239 and Red Hat bug
130 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
131 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
134 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
135 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
136 femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
138 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
139 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
140 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
141 <stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
142 INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
143 UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
144 INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
145 UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
146 UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
147 UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
148 UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
151 * New <math.h> features are added from TS 18661-1:2014:
153 - Signaling NaN macros: SNANF, SNAN, SNANL.
155 - Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
156 fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
157 fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
159 - llogb functions: the llogb, llogbf and llogbl functions, and the
160 FP_LLOGB0 and FP_LLOGBNAN macros.
162 - Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
165 - Comparison macros: iseqsig.
167 - Classification macros: iscanonical, issubnormal, iszero.
169 - Total order functions: totalorder, totalorderf, totalorderl,
170 totalordermag, totalordermagf, totalordermagl.
172 - Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
174 - NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
175 setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
177 * The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
178 are added to libc. They convert a floating-point number into string.
180 * Most of glibc can now be built with the stack smashing protector enabled.
181 It is recommended to build glibc with --enable-stack-protector=strong.
182 Implemented by Nick Alcock (Oracle).
184 * The function explicit_bzero, from OpenBSD, has been added to libc. It is
185 intended to be used instead of memset() to erase sensitive data after use;
186 the compiler will not optimize out calls to explicit_bzero even if they
187 are "unnecessary" (in the sense that no _correct_ program can observe the
188 effects of the memory clear).
190 * On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
191 to float instead of double. This does not affect the ABI of any libraries
192 that are part of the GNU C Library, but may affect the ABI of other
193 libraries that use this type in their interfaces.
195 * On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
196 float_t and double_t types are now defined to long double instead of float
197 and double. These options are not the default, and this does not affect
198 the ABI of any libraries that are part of the GNU C Library, but it may
199 affect the ABI of other libraries that use this type in their interfaces,
200 if they are compiled or used with those options.
202 * The getentropy and getrandom functions, and the <sys/random.h> header file
205 * The buffer size for byte-oriented stdio streams is now limited to 8192
206 bytes by default. Previously, on Linux, the default buffer size on most
207 file systems was 4096 bytes (and thus remains unchanged), except on
208 network file systems, where the buffer size was unpredictable and could be
209 as large as several megabytes.
211 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
212 for the Linux quota interface which predates kernel version 2.4.22 has
215 * The malloc_get_state and malloc_set_state functions have been removed.
216 Already-existing binaries that dynamically link to these functions will
217 get a hidden implementation in which malloc_get_state is a stub. As far
218 as we know, these functions are used only by GNU Emacs and this change
219 will not adversely affect already-built Emacs executables. Any undumped
220 Emacs executables, which normally exist only during an Emacs build, should
221 be rebuilt by re-running “./configure; make” in the Emacs build tree.
223 * The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
224 corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
225 “no-ip6-dotint” had already been the default, and support for the
226 “ip6-dotint” option was removed from the Internet in 2006.
228 * The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
229 flag from <resolv.h> have been removed. The option relied on a
230 backwards-incompatible DNS extension which was never deployed on the
233 * The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
234 RES_BLAST defined in the <resolv.h> header file have been deprecated.
235 They were already unimplemented.
237 * The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
238 _res.flags are deprecated. The flag was standardized in RFC 2133, but
239 removed again from the IETF name lookup interface specification in RFC
240 2553. Applications should use getaddrinfo instead.
242 * DNSSEC-related declarations and definitions have been removed from the
243 <arpa/nameser.h> header file, and libresolv will no longer attempt to
244 decode the data part of DNSSEC record types. Previous versions of glibc
245 only implemented minimal support for the previous version of DNSSEC, which
246 is incompatible with the currently deployed version.
248 * The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
249 ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
250 <arpa/nameser.h> header file because the distinction between RR types and
251 meta-RR types is not officially standardized, subject to revision, and
252 thus not suitable for encoding in a macro.
254 * The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
255 and rhook members of the res_state type in <resolv.h> have been removed.
256 The glibc stub resolver did not support these hooks, but the header file
257 did not reflect that.
259 * For multi-arch support it is recommended to use a GCC which has
260 been built with support for GNU indirect functions. This ensures
261 that correct debugging information is generated for functions
262 selected by IFUNC resolvers. This support can either be enabled by
263 configuring GCC with '--enable-gnu-indirect-function', or by
264 enabling it by default by setting 'default_gnu_indirect_function'
265 variable for a particular architecture in the GCC source file
268 * GDB pretty printers have been added for mutex and condition variable
269 structures in POSIX Threads. When installed and loaded in gdb these pretty
270 printers show various pthread variables in human-readable form when read
271 using the 'print' or 'display' commands in gdb.
273 * Tunables feature added to allow tweaking of the runtime for an application
274 program. This feature can be enabled with the '--enable-tunables' configure
275 flag. The GNU C Library manual has details on usage and README.tunables has
276 instructions on adding new tunables to the library.
278 * A new version of condition variables functions have been implemented in
279 the NPTL implementation of POSIX Threads to provide stronger ordering
282 * A new version of pthread_rwlock functions have been implemented to use a more
283 scalable algorithm primarily through not using a critical section anymore to
286 Security related changes:
288 * On ARM EABI (32-bit), generating a backtrace for execution contexts which
289 have been created with makecontext could fail to terminate due to a
290 missing .cantunwind annotation. This has been observed to lead to a hang
291 (denial of service) in some Go applications compiled with gccgo. Reported
292 by Andreas Schwab. (CVE-2016-6323)
294 * The DNS stub resolver functions would crash due to a NULL pointer
295 dereference when processing a query with a valid DNS question type which
296 was used internally in the implementation. The stub resolver now uses a
297 question type which is outside the range of valid question type values.
300 The following bugs are resolved with this release:
302 [4099] stdio: Overly agressive caching by stream i/o functions.
303 [7065] build: Support building glibc with -fstack-protector or -fstack-
305 [9842] localedata: en_CA: incorrect date format
306 [13165] nptl: pthread_cond_wait() can consume a signal that was sent
307 before it started waiting
308 [14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
309 [15765] nptl: sem_open is wrongly a cancellation point
310 [16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
311 [16458] libc: endian.h and netinet/in.h byte order macros return values of
313 [16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
314 library linked with pthread
315 [16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
317 [16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
318 [17252] libc: getrandom and getentropy syscall
319 [17730] malloc: thread-local storage is sometimes improperly free()'d
320 after being __libc_memalign()'d
321 [18241] stdio: failed fseek on memstream does not set errno and can fail
323 [18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
325 [18463] nptl: pthread_cond_broadcast issue when surrounded by
326 PTHREAD_PRIO_INHERIT mutex on ARM
327 [18784] network: res_query and related function crash for special record
328 type queries (CVE-2015-5180)
329 [19380] math: strtod does not raise "inexact"
330 [19387] string: Integer overflow in memchr
331 [19390] string: Integer overflow in strncat
332 [19398] build: linknamespace tests fail with massively parallel build
333 [19402] nptl: Deadlock with robust shared mutex and asynchronous
335 [19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
336 [19473] malloc: Turn malloc_get_state etc. in compatibility symbols
337 [19514] libc: [PATCH] Fix spelling errors in spelling
338 "implement"/"implementation" in several places
339 [19582] network: Deprecate RES_USE_INET6
340 [19673] manual: clog10 docs appear to be erroneous
341 [19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
342 causes a segmentation fault
343 [19826] libc: invalid pointer returned from __tls_get_addr with static
345 [20016] network: resolv: Remove hooks support from the API
346 [20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
348 [20033] math: [x86_64] vectorized math function don't call the __finite
350 [20116] nptl: use after free in pthread_create
351 [20181] stdio: open_memstream(): writes not at end of stream corrupt data
352 [20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
354 [20311] nptl: please install proc_service.h
355 [20366] libc: Compilation errors in installed headers in strict-compliance
357 [20370] malloc: malloc: Arena free list management is still racy
358 (incorrect fix in bug 19243)
359 [20386] libc: assert (X = 0) does not result in GCC warning
360 [20432] malloc: malloc: Minimize interface required for interposition
361 [20435] libc: Missing unwind info in __startcontext causes infinite loop
362 in _Unwind_Backtrace (CVE-2016-6323)
363 [20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
364 [20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
366 [20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
367 [20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
368 [20477] network: resolv: incorrect double-checked locking related to
370 [20478] libc: libc_ifunc macro and similar usages leads to false debug-
372 [20495] math: x86_64 performance degradation due to AVX/SSE transition
374 [20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
375 [20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
376 cause transition penalty
377 [20517] math: sparcv9 missing fdiml compat symbol
378 [20524] manual: strverscmp is inconsistent
379 [20525] libc: <sys/quota.h> should be based on kernel headers
380 [20539] math: GCC 7 -static -lm fails to link at -O3
381 [20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
383 [20558] string: POSIX bcopy/bzero decls do not implement Object Size
385 [20591] network: Remove obsolete DNSSEC support
386 [20592] network: DNS resource record type classification macros in
387 <arpa/nameser.h> are incorrect
388 [20593] network: Update DNS RR type definitions
389 [20611] network: getaddrinfo accepts invalid numeric scope IDs
390 [20615] build: glibc build fails when using --with-cpu=power9 --enable-
392 [20629] network: libresolv: Remove support for bitstring labels
394 [20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
395 assertion: "maxidx >= 2"
396 [20660] math: [arm] Use VSQRT
397 [20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
398 -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
399 [20689] libc: Test for FMA should also check for AVX.
400 [20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
401 [20715] math: iszero macro breaks existing code
402 [20718] math: [powerpc] copysignl raises "invalid" for sNaN
403 [20728] libc: powerpc: Missing TOC stub in clone
404 [20729] build: glibc-2.24 fails to build for i486 with -Os
405 [20750] build: Build fails with default PIE enabled gcc-6.x
406 [20768] math: [alpha] sqrt fegetenv namespace
407 [20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
409 [20787] math: float_t is defined as float incorrectly on x86_64 even if
410 __FLT_EVAL_METHOD__ is 2
411 [20790] network: rpcgen buffer overrun in get_prog_declaration
412 [20822] nptl: race condition in __lll_unlock_elision on powerpc
413 [20829] libc: crypt snprintf namespace
414 [20847] libc: tst-vfork3 failure
415 [20855] math: Default bits/mathdef.h has inappropriate float_t
416 [20859] math: [sh4] FP_ILOGB0 invalid
417 [20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
418 U+20AC), not same as GBK
419 [20915] dynamic-link: global-dynamic TLS broken on aarch64
420 [20916] math: pow handling of sNaN arguments
421 [20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
422 [20919] math: Bad pow (qNaN, 0) result with -lieee
423 [20940] math: hypot sNaN handling
424 [20947] math: fmax, fmin sNaN handling
425 [20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
426 [20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
428 [20971] string: powerpc64/power7 memchr overflows internal pointer check
429 [20973] nptl: robust mutexes: Lost wake-ups
430 [20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
431 [20978] nis: strlen on null pointer in nss_nisplus
432 [20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
434 [21014] string: i686 memchr overflows internal pointer check
435 [21019] libc: [mips] n32 lseek incorrect on overflow
436 [21022] libc: [microblaze] __backtrace get_frame_size namespace
437 [21026] libc: [MIPS] readahead syscall is broken on n64
438 [21028] math: Fallback fesetexceptflag should always succeed
439 [21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
440 [21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
442 [21053] libc: [SH] Namespace pollution from sys/ucontext.h
443 [21061] librt: [microblaze] librt lost clock_* exports
444 [21073] libc: tunables: insecure environment variables passed to
445 subprocesses with AT_SECURE
446 [21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
450 * The minimum Linux kernel version that this version of the GNU C Library
451 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
452 kernel version 2.6.32 or later suffices (on architectures that already
453 required kernel versions more recent than 3.2, those requirements remain
454 unchanged). Linux 3.2 or later kernel headers are required on all
457 * The pap_AN locale has been deleted. This has been deprecated for a long
458 time. It has been replaced by pap_AW & pap_CW, both of which have long
459 been included in previous releases.
461 * The readdir_r and readdir64_r functions have been deprecated. It is
462 recommended to use readdir and readdir64 instead.
464 * The type “union wait” has been removed. It was deprecated in the early
465 1990s and never part of POSIX. Application code should use the int type
466 instead of “union wait”.
468 * A new NSS action is added to facilitate large distributed system
469 administration. The action, MERGE, allows remote user stores like LDAP
470 to be merged into local user stores like /etc/groups in order to provide
471 easy to use, updated, and managed sets of merged credentials. The new
472 action can be used by configuring it in /etc/nsswitch.conf:
473 group: files [SUCCESS=merge] nis
474 Implemented by Stephen Gallagher (Red Hat).
476 * The deprecated __malloc_initialize_hook variable has been removed from the
479 * The long unused localedef --old-style option has been removed. It hasn't
480 done anything in over 16 years. Scripts using this option can safely
483 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
484 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
485 return the next representable value in the direction of positive infinity
486 and the nextdown functions return the next representable value in the
487 direction of negative infinity. These are currently enabled as GNU
490 Security related changes:
492 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
493 could result in a stack overflow when getnetbyname was called with an
494 overly long name. (CVE-2016-3075)
496 * Previously, getaddrinfo copied large amounts of address data to the stack,
497 even after the fix for CVE-2013-4458 has been applied, potentially
498 resulting in a stack overflow. getaddrinfo now uses a heap allocation
499 instead. Reported by Michael Petlan. (CVE-2016-3706)
501 * The glob function suffered from a stack-based buffer overflow when it was
502 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
503 Reported by Alexander Cherepanov. (CVE-2016-1234)
505 * The Sun RPC UDP client could exhaust all available stack space when
506 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
507 alloca plugin for GCC. (CVE-2016-4429)
509 * The IPv6 name server management code in libresolv could result in a memory
510 leak for each thread which is created, performs a failing naming lookup,
511 and exits. Over time, this could result in a denial of service due to
512 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
514 The following bugs are resolved with this release:
516 [1170] localedata: ne_NP: update Nepali locale definition file
517 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
519 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
520 [6796] math: fdim() does not set errno on overflow
521 [10354] libc: posix_spawn should use vfork() in more cases than presently
522 [11213] localedata: localedata: add copyright disclaimer to locale files
523 [12143] localedata: chr_US: new Cherokee locale
524 [12450] localedata: sgs_LT: new locale
525 [12676] localedata: ln_CD: new locale
526 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
528 [13304] math: fma, fmaf, fmal produce wrong results
529 [14259] build: --localedir arg to configure is ignored
530 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
531 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
532 [14934] localedata: es_CL: wrong first weekday chilean locale
533 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
535 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
537 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
538 [15368] nptl: raise() is not async-signal-safe
539 [15479] math: ceil, floor, round and trunc raise inexact exception
540 [15578] localedata: kk_KZ: various updates
541 [16003] localedata: pap_AN: punt old locale
542 [16137] localedata: iw_IL: punt old locale
543 [16190] localedata: eo: new esperanto locale
544 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
545 [16742] malloc: race condition: pthread_atfork() called before first
546 malloc() results in unexpected locking behaviour/deadlocks
547 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
549 [16983] localedata: postal_fmt does not allow %l and %n modifiers
550 [17565] localedata: pt_PT: wrong (work-)week start
551 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
552 [17950] build: Build fails with -msse
553 [18205] localedata: be_BY*: wrong first_weekday and first_workday
554 [18433] libc: posix_spawn does not return correctly upon failure to
556 [18453] localedata: charmaps/IBM875: incorrect codes
557 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
559 [18896] localedata: he_IL: improvements for currency
560 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
562 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
564 [19056] libc: Deprecate readdir_r
565 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
567 [19198] localedata: nl_NL: small improvements for Dutch locales
568 [19257] network: Per-thread memory leak in __res_vinit with IPv6
569 nameservers (CVE-2016-5417)
570 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
572 [19400] locale: Language missing in "iso-639.def", trivial fix in
574 [19431] malloc: Deadlock between fflush, getdelim, and fork
575 [19505] libc: Incorrect file descriptor validity checks in
576 posix_spawn_file_actions_add{open,close,dup2}
577 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
579 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
580 `intl/{gettextP,loadinfo}.h'
581 [19534] libc: execle, execlp may use malloc
582 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
583 [19573] network: res_nclose and __res_maybe_init disagree about name
584 server initialization, breaking Hesiod
585 [19575] localedata: Status of GB18030 tables
586 [19581] localedata: sr_* date_fmt string contains additional newline
587 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
589 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
590 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
591 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
592 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
594 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
596 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
598 [19610] dynamic-link: ldconfig -X removes stale symbolic links
599 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
600 [19633] locale: strfmon_l applies global locale to number formatting
601 [19642] network: Memory leak in getnameinfo
602 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
603 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
605 [19654] math: [x86_64] Need testcase for BZ #19590 fix
606 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
608 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
609 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
611 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
613 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
615 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
616 pointers and lengths in error-case.
617 [19727] locale: Converting from/to UTF-xx with iconv() does not always
618 report errors on UTF-16 surrogates values.
619 [19755] nscd: nscd assertion failure in gc
620 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
621 [19759] libc: mempcpy shouldn't be inlined
622 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
623 [19765] libc: s390 needs an optimized mempcpy
624 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
625 NAME_MAX limit assumption (CVE-2016-1234)
626 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
627 [19787] network: Missing and incorrect truncation checks in getnameinfo
628 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
630 [19791] network: Assertion failure in res_query.c with un-connectable name
632 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
633 [19822] math: libm.so install clobbers old version
634 [19825] network: resolv: send_vc can return uninitialized data in second
635 response to getaddrinfo
636 [19830] network: nss_dns: should check RDATA length against buffer length
637 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
638 confronted with A/AAAA records of invalid size
639 [19837] nss: nss_db: No retries for some long lines with a larger buffer
640 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
641 [19853] stdio: Printing IBM long double in decimal with high precision is
643 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
644 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
645 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
647 [19865] network: Assertion failure or memory leak in
648 _nss_dns_getcanonname_r
649 [19868] network: nss_dns: netent code does not skip over non-PTR records
650 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
652 [19881] string: Improve x86-64 memset
653 [19907] string: Incorrect memcpy tests
654 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
656 [19925] libc: termios.h XCASE namespace
657 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
658 [19929] libc: limits.h NL_NMAX namespace
659 [19931] stdio: Memory leak in vfprintf
660 [19957] libc: clone(CLONE_VM) access invalid parent memory
661 [19963] localedata: en_IL: New locale
662 [19989] stdio: stdio.h cuserid namespace
663 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
665 [19996] locale: langinfo.h nl_langinfo_l namespace
666 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
667 [20010] network: getaddrinfo: Stack overflow in hostent translation
669 [20012] stdio: libio: fmemopen append mode failure
670 [20014] stdio: stdio.h namespace for pre-threads POSIX
671 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
672 [20023] libc: fcntl.h timespec namespace
673 [20024] math: [x86_64] vectorized sincos trashes the stack
674 [20031] network: nss_hesiod: Heap overflow in get_txt_records
675 [20041] time: sys/time.h timespec namespace
676 [20043] libc: unistd.h missing cuserid for UNIX98 and before
677 [20044] libc: unistd.h missing pthread_atfork for UNIX98
678 [20051] libc: ttyslot in wrong header under wrong conditions
679 [20054] libc: gethostname not declared for XPG4
680 [20055] libc: termios.h missing tcgetsid for XPG4
681 [20072] dynamic-link: x86 init_cpu_features is called twice in static
683 [20073] libc: sys/stat.h fchmod namespace
684 [20074] libc: stdlib.h rand_r namespace
685 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
686 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
688 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
689 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
691 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
692 [20119] libc: Wrong mask for processors level type from CPUID
693 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
694 AS not supporting AVX512
695 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
697 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
698 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
700 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
701 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
702 [20178] libc: posix_spawn{p} should not call exit
703 [20191] stdio: libio: vtables hardening
704 [20195] string: FMA4 detection requires CPUID execution with register
706 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
707 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
709 [20212] math: acos (sNaN) returns sNaN
710 [20213] math: asin (sNaN) returns sNaN
711 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
712 [20218] math: [i386] asinhl (sNaN) returns sNaN
713 [20219] math: [i386] atanhl (sNaN) returns sNaN
714 [20222] stdio: fopencookie: Mangle function pointers
715 [20224] math: [i386] cbrtl (sNaN) returns sNaN
716 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
717 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
719 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
720 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
721 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
722 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
723 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
724 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
725 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
726 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
727 [20240] math: modf (sNaN) returns sNaN
728 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
729 [20250] math: frexp (sNaN) returns sNaN
730 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
731 [20255] math: [i386] fdim, fdimf return with excess range and precision /
733 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
734 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
735 subscript is below array bounds [-Werror=array-bounds]
736 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
737 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
739 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
740 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
742 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
744 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
745 [20316] localedata: id_ID: Februari instead of Pebruari
746 [20327] string: POWER8 strcasecmp returns incorrect result
747 [20347] math: Failure: Test: j0_downward (0xap+0)
748 [20348] libc: FAIL: misc/tst-preadvwritev64
749 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
750 [20350] libc: There is no test for p{read,write}64
751 [20357] math: Incorrect cos result for 1.5174239687223976
752 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
756 * Unicode 8.0.0 Support: Character encoding, character type info, and
757 transliteration tables are all updated to Unicode 8.0.0, using new
758 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
759 These updates cause user visible changes, such as the fixes for bugs
760 89, 16061, and 18568.
762 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
763 kernel-internal CPU set size. This means that requests that change the
764 CPU affinity which failed before (for example, an all-ones CPU mask) will
765 now succeed. Applications that need to determine the effective CPU
766 affinities need to call sched_getaffinity or pthread_getaffinity_np after
767 setting it because the kernel can adjust it (and the previous size check
768 would not detect this in the majority of cases).
770 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
771 the following new symbols are used: fts64_children, fts64_close,
772 fts64_open, fts64_read and fts64_set.
774 * getaddrinfo now detects certain invalid responses on an internal netlink
775 socket. If such responses are received, an affected process will
776 terminate with an error message of "Unexpected error <number> on netlink
777 descriptor <number>" or "Unexpected netlink response of size <number> on
778 descriptor <number>". The most likely cause for these errors is a
779 multi-threaded application which erroneously closes and reuses the netlink
780 file descriptor while it is used by getaddrinfo.
782 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
783 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
784 unnecessary serialization of memory allocation requests across threads.
785 The defect is now corrected. Users should see a substantial increase in
786 the concurent throughput of allocation requests for applications which
787 trigger this bug. Affected applications typically create and
788 destroy threads frequently. (Bug 19048 was reported and analyzed by
791 * There is now a --disable-timezone-tools configure option for disabling the
792 building and installing of the timezone related utilities (zic, zdump, and
793 tzselect). This is useful for people who build the timezone data and code
794 independent of the GNU C Library.
796 * The obsolete header <regexp.h> has been removed. Programs that require
797 this header must be updated to use <regex.h> instead.
799 * The obsolete functions bdflush, create_module, get_kernel_syms,
800 query_module and uselib are no longer available to newly linked binaries;
801 the header <sys/kdaemon.h> has been removed. These functions and header
802 were specific to systems using the Linux kernel and could not usefully be
803 used with the GNU C Library on systems with version 2.6 or later of the
806 * Optimized string, wcsmbs and memory functions for IBM z13.
807 Implemented by Stefan Liebler.
809 * Newly linked programs that define a variable called signgam will no longer
810 have it set by the lgamma, lgammaf and lgammal functions. Programs that
811 require signgam to be set by those functions must ensure that they use the
812 variable provided by the GNU C Library and declared in <math.h>, without
813 defining their own copy.
815 * The minimum GCC version that can be used to build this version of the GNU
816 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
817 still be used to compile programs using the GNU C Library.
819 Security related changes:
821 * An out-of-bounds value in a broken-out struct tm argument to strftime no
822 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
824 * The LD_POINTER_GUARD environment variable can no longer be used to disable
825 the pointer guard feature. It is always enabled. Previously,
826 LD_POINTER_GUARD could be used to disable security hardening in binaries
827 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
830 * An integer overflow in hcreate and hcreate_r could lead to an
831 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
833 * The catopen function no longer has unbounded stack usage. Reported by
836 * The nan, nanf and nanl functions no longer have unbounded stack usage
837 depending on the length of the string passed as an argument to the
838 functions. Reported by Joseph Myers. (CVE-2014-9761)
840 * A stack-based buffer overflow was found in libresolv when invoked from
841 libnss_dns, allowing specially crafted DNS responses to seize control
842 of execution flow in the DNS client. The buffer overflow occurs in
843 the functions send_dg (send datagram) and send_vc (send TCP) for the
844 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
845 family. The use of AF_UNSPEC triggers the low-level resolver code to
846 send out two parallel queries for A and AAAA. A mismanagement of the
847 buffers used for those queries could result in the response of a query
848 writing beyond the alloca allocated buffer created by
849 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
850 the overflow. Thanks to the Google Security Team and Red Hat for
851 reporting the security impact of this issue, and Robert Holiday of
852 Ciena for reporting the related bug 18665. (CVE-2015-7547)
854 The following bugs are resolved with this release:
856 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
857 [887] math: Math library function "logb" and "nextafter" inconsistent
858 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
859 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
860 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
861 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
863 [4404] localedata: German translation of "Alarm clock" is misleading
864 [6799] math: nextafter() and nexttoward() doen't set errno on
865 overflow/underflow errors
866 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
868 [10432] nis: _nss_nis_setnetgrent assertion failure
869 [11460] libc: fts has no LFS support
870 [12926] network: getaddrinfo()/make_request() may spin forever
871 [13065] nptl: Race condition in pthread barriers
872 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
873 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
875 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
876 [14912] libc: Rename non-installed bits/*.h headers
877 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
878 [15367] math: Let gcc use __builtin_isinf
879 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
880 [15421] math: lgamma wrongly sets signgam for ISO C
881 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
882 FE_INVALID with argument out of range
883 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
885 [15786] dynamic-link: ifunc resolver functions can smash function
887 [15918] math: Unnecessary check for equality in hypotf()
888 [16061] localedata: Review / update transliteration data
889 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
891 [16141] time: strptime %z offset restriction
892 [16171] math: drem should be alias of remainder
893 [16296] math: fegetround is pure?
894 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
895 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
897 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
898 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
900 [16422] math: [powerpc] math-float, math-double failing llrint tests with
901 "Exception "Inexact" set" on ppc32
902 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
903 [16517] math: Missing underflow exception from tanf/tan/tanl
904 [16519] math: Missing underflow exception from sinhf
905 [16520] math: Missing underflow exception from tanhf
906 [16521] math: Missing underflow exception from exp2
907 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
909 [16734] stdio: fopen calls mmap to allocate its buffer
910 [16961] math: nan function incorrect handling of bad sequences
911 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
912 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
913 [16985] locale: localedef: confusing error message when opening output
915 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
916 [17197] locale: Redundant shift character in iconv conversion output at
918 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
919 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
920 [17250] dynamic-link: static linking breaks nss loading
921 (getaddrinfo/getpwnam/etc...)
922 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
924 [17441] math: isnan() should use __builtin_isnan() in GCC
925 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
926 (related to lock elision)
927 [17787] manual: Exponent on page 324 of the PDF ends prematurely
928 [17886] time: strptime should be able to parse "Z" as a timezone with %z
929 [17887] time: strptime should be able to parse "+01:00" style timezones
930 [17905] libc: catopen() Multiple unbounded stack allocations
932 [18084] libc: backtrace (..., 0) dumps core on x86
933 [18086] libc: nice() sets errno to 0 on success
934 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
935 is too large (CVE-2015-8778)
936 [18251] dynamic-link: SONAME missing when audit modules provides path
937 [18265] libc: add attributes for wchar string and memory functions
938 [18370] math: csqrt missing underflows
939 [18421] libc: [hppa] read-only segment has dynamic relocations
940 [18472] libc: Obsolete syscall wrappers should be compat symbols
941 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
942 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
943 [18525] localedata: Remove locale timezone information
944 [18560] libc: [powerpc] spurious bits/ipc.h definitions
945 [18568] localedata: Update locale data to Unicode 8.0
946 [18589] locale: sort-test.sh fails at random
947 [18595] math: ctan, ctanh missing underflows
948 [18604] libc: assert macro-expands its argument
949 [18610] math: S390: fetestexcept() reports any exception if DXC-code
950 contains a vector instruction exception.
951 [18611] math: j1, jn missing errno setting on underflow
952 [18618] localedata: sync Chechen locale definitions with other *_RU
954 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
955 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
956 [18665] network: In send_dg, the recvfrom function is NOT always using the
957 buffer size of a newly created buffer (CVE-2015-7547)
958 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
960 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
962 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
963 [18699] math: tilegx cproj() for various complex infinities does not yield
965 [18724] libc: Harden put*ent functions against data injection
966 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
967 [18755] build: build errors with -DNDEBUG
968 [18757] stdio: fmemopen fails to set errno on failure
969 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
971 [18781] libc: openat64 lacks O_LARGEFILE
972 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
973 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
974 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
975 [18790] math: [ldbl-128ibm] tanhl inaccurate
976 [18795] libc: stpncpy fortification misses buffer lengths that are
978 [18796] build: build fails for --disable-mathvec
979 [18803] math: hypot missing underflows
980 [18820] stdio: fmemopen may leak memory on failure
981 [18823] math: csqrt spurious underflows
982 [18824] math: fma spurious underflows
983 [18825] math: pow missing underflows
984 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
985 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
986 [18870] build: sem_open.c fails to compile with missing symbol
988 [18872] stdio: Fix memory leak in printf_positional
989 [18873] libc: posix_fallocate overflow check ineffective
990 [18875] math: Excess precision leads incorrect libm
991 [18877] libc: arm: mmap offset regression
992 [18887] libc: memory corruption when using getmntent on blank lines
993 [18918] localedata: hu_HU: change time to HH:MM:SS format
994 [18921] libc: Regression: extraneous stat() and fstat() performed by
996 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
997 binaries (CVE-2015-8777)
998 [18951] math: tgamma missing underflows
999 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
1001 [18953] localedata: lt_LT: change currency symbol to the euro
1002 [18956] math: powf inaccuracy
1003 [18961] math: [i386] exp missing underflows
1004 [18966] math: [i386] exp10 missing underflows
1005 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
1006 [18969] build: multiple string test failures due to missing locale
1008 [18970] libc: Reference of pthread_setcancelstate in libc.a
1009 [18977] math: float / long double Bessel functions not in XSI POSIX
1010 [18980] math: i386 libm functions return with excess range and precision
1011 [18981] math: i386 scalb*, ldexp return with excess range and precision
1012 [18982] stdio: va_list and vprintf
1013 [18985] time: Passing out of range data to strftime() causes a segfault
1015 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
1016 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
1017 [19012] locale: iconv_open leaks memory on error path
1018 [19016] math: clog, clog10 inaccuracy
1019 [19018] nptl: Mangle function pointers in tls_dtor_list
1020 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
1021 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
1022 [19048] malloc: malloc: arena free list can become cyclic, increasing
1024 [19049] math: [powerpc] erfc incorrect zero sign
1025 [19050] math: [powerpc] log* incorrect zero sign
1026 [19058] math: [x86_64] Link fail with -fopenmp and -flto
1027 [19059] math: nexttoward overflow incorrect in non-default rounding modes
1028 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
1029 [19074] network: Data race in _res_hconf_reorder_addrs
1030 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
1031 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
1032 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
1034 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
1036 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
1037 [19086] manual: posix_fallocate64 documented argument order is wrong.
1038 [19088] math: lround, llround missing exceptions close to overflow
1040 [19094] math: lrint, llrint missing exceptions close to overflow threshold
1041 [19095] math: dbl-64 lrint incorrect for 64-bit long
1042 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
1043 [19124] dynamic-link: ld.so failed to build with older assmebler
1044 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
1045 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
1046 [19134] math: [powerpc32] lround, lroundf spurious exceptions
1047 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
1048 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
1049 pthread_setaffinity_np
1050 [19156] math: [ldbl-128] j0l spurious underflows
1051 [19164] nptl: tst-getcpu fails with many possible CPUs
1052 [19168] math: math/test-ildoubl and math/test-ldouble failure
1053 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
1054 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
1056 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
1057 (FE_NOMASK_ENV) do not clear SSE exceptions
1058 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
1059 _int_new_arena/reused_arena
1060 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
1061 [19201] math: dbl-64 remainder incorrect sign of zero result
1062 [19205] math: bits/math-finite.h conditions do not match math.h and
1064 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
1065 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
1066 for C99-based standards
1067 [19212] libc: features.h not -Wundef clean
1068 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
1070 [19214] libc: Family and model identification for AMD CPU's are incorrect.
1071 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
1072 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
1074 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
1075 "inexact" exceptions
1076 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
1078 [19242] libc: strtol incorrect in Turkish locales
1079 [19243] malloc: reused_arena can pick an arena on the free list, leading
1080 to an assertion failure and reference count corruption
1081 [19253] time: tzset() ineffective when temporary TZ did not include DST
1083 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
1084 [19270] math: [hppa] Shared libm missing __isnanl
1085 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
1086 MAP_HUGETLB and MAP_STACK defines
1087 [19313] nptl: Wrong __cpu_mask for x32
1088 [19347] libc: grantpt: try to force a specific gid even without pt_chown
1089 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
1090 [19350] math: [ldbl-128ibm] sinhl spurious overflows
1091 [19351] math: [ldbl-128ibm] logl inaccurate near 1
1092 [19363] time: x32: times() return value wrongly truncates/sign extends
1094 [19367] dynamic-link: Improve branch prediction on Silvermont
1095 [19369] network: Default domain name not reset by res_ninit when "search"
1096 / "domain" entry is removed from resolv.conf
1097 [19375] math: powerpc: incorrect results for POWER7 logb with negative
1099 [19385] localedata: bg_BG: time separator should be colon, not comma
1100 [19408] libc: linux personality syscall wrapper may erroneously return an
1101 error on 32-bit architectures
1102 [19415] libc: dladdr returns wrong names on hppa
1103 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
1104 IBM905, IBM907, and IBM909
1105 [19439] math: Unix98 isinf and isnan functions conflict with C++11
1106 [19443] build: build failures with -DDEBUG
1107 [19451] build: Make check fails on test-double-vlen2
1108 [19462] libc: Glibc failed to build with -Os
1109 [19465] math: Wrong code with -Os
1110 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
1112 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
1114 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
1115 [19486] math: S390: Math tests fail with "Exception Inexact set".
1116 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
1117 [19550] libc: [mips] mmap negative offset handling inconsistent with other
1119 [19590] math: Fail to build shared objects that use libmvec.so functions.
1123 * The following bugs are resolved with this release:
1125 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
1126 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
1127 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
1128 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
1129 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
1130 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
1131 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
1132 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
1133 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
1134 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
1135 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
1136 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
1137 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
1138 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
1139 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
1140 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
1141 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
1142 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
1143 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
1144 18657, 18676, 18694, 18696, 18887.
1146 * Cache information can be queried via sysconf() function on s390 e.g. with
1147 _SC_LEVEL1_ICACHE_SIZE as argument.
1149 * A buffer overflow in gethostbyname_r and related functions performing DNS
1150 requests has been fixed. If the NSS functions were called with a
1151 misaligned buffer, the buffer length change due to pointer alignment was
1152 not taken into account. This could result in application crashes or,
1153 potentially arbitrary code execution, using crafted, but syntactically
1154 valid DNS responses. (CVE-2015-1781)
1156 * The time zone file parser has been made more robust against crafted time
1157 zone files, avoiding heap buffer overflows related to the processing of
1158 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
1159 large time zone data files. Overly long time zone specifiers in the TZ
1160 variable no longer result in stack overflows and crashes.
1162 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
1163 for LD and GD on x86 and x86-64, has been implemented. You will need
1164 binutils-2.24 or later to enable this optimization.
1166 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
1167 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
1168 Hat). These updates cause user visible changes, such as the fix for bug
1171 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
1172 and getXXbyYY NSS calls for the same database, causing a denial-of-service
1173 condition in some applications.
1175 * Added vector math library named libmvec with the following vectorized x86_64
1176 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
1178 The library can be disabled with --disable-mathvec. Use of the functions is
1179 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
1180 Shared library libmvec.so is linked in as needed when using -lm (no need to
1181 specify -lmvec explicitly for not static builds).
1182 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
1184 * A new fmemopen implementation has been added with the goal of POSIX
1185 compliance. The new implementation fixes the following long-standing
1186 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
1187 old implementation is still present for use be by existing binaries.
1189 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
1190 releases. It has been fixed to match 2.19 and older, but binaries built
1191 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
1193 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
1194 Contributed by Roland McGrath (Google).
1196 * The header <regexp.h> is deprecated, and will be removed in a future
1197 release. Use of this header will trigger a deprecation warning.
1198 Application developers should update their code to use <regex.h> instead.
1200 This header was formerly part of SUS, but was deprecated in 1994 and
1201 removed from the standard in 2001. Also, the glibc implementation
1202 leaks memory. See BZ#18681 for more details.
1206 * The following bugs are resolved with this release:
1208 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
1209 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
1210 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
1211 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
1212 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
1213 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
1214 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
1215 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
1216 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
1217 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
1220 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
1221 too little memory for the to-be-scanned arguments and overflow the
1222 allocated buffer. The implementation now correctly computes the required
1223 buffer size when using malloc, and switches to malloc from alloca as
1226 * A new semaphore algorithm has been implemented in generic C code for all
1227 machines. Previous custom assembly implementations of semaphore were
1228 difficult to reason about or ensure that they were safe. The new version
1229 of semaphore supports machines with 64-bit or 32-bit atomic operations.
1230 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
1231 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
1233 * Port to Altera Nios II has been contributed by Mentor Graphics.
1235 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
1236 implementations for powerpc64/powerpc64le.
1237 Implemented by Adhemerval Zanella (IBM).
1239 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
1240 and powerpc64le. This may improve lock scaling of existing programs on
1241 HTM capable systems. The lock elision code is only enabled with
1242 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
1243 powerpc will issue a transaction abort on every syscall to avoid side
1244 effects being visible outside transactions.
1246 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
1247 AArch64. Contributed by ARM Ltd.
1249 * i386 memcpy functions optimized with SSE2 unaligned load/store.
1251 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
1252 under certain input conditions resulting in the execution of a shell for
1253 command substitution when the application did not request it. The
1254 implementation now checks WRDE_NOCMD immediately before executing the
1255 shell and returns the error WRDE_CMDSUB as expected.
1257 * CVE-2012-3406 printf-style functions could run into a stack overflow when
1258 processing format strings with a large number of format specifiers.
1260 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
1261 infinite loop if the DNS response contained a PTR record of an unexpected
1264 * The minimum GCC version that can be used to build this version of the GNU
1265 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
1266 still be used to compile programs using the GNU C Library.
1268 * The GNU C Library is now built with -Werror by default. This can be
1269 disabled by configuring with --disable-werror.
1271 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
1273 * The obsolete sigvec function has been removed. This was the original
1274 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
1275 programs have been using instead for about 25 years. Of course, ABI
1276 compatibility for old binaries using sigvec remains intact.
1278 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
1279 with newer versions of bison.
1281 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
1282 The original MIPS o32 hard-float ABI requires an FPU where double-precision
1283 registers overlay two consecutive single-precision registers. MIPS32R2
1284 introduced a new FPU mode (FR=1) where double-precision registers extend the
1285 corresponding single-precision registers which is incompatible with the
1286 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
1287 require the use of FR=1 making a transition necessary. New o32 ABI
1288 extensions enable users to migrate over time from the original o32 ABI
1289 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
1290 tracks the ABI of any loaded object and verifies that new objects are
1291 compatible. Mode transitions will also be requested as required and
1292 unsupportable objects will be rejected. The ABI checks include both soft and
1293 hard float ABIs for o32, n32 and n64.
1295 GCC 5 with GNU binutils 2.25 onwards:
1296 It is strongly recommended that all o32 system libraries are built using the
1297 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
1298 with the original and all new o32 ABI extensions. Configure a MIPS GCC
1299 compiler using --with-fp-32=xx to set this by default.
1303 * The following bugs are resolved with this release:
1305 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
1306 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
1307 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
1308 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
1309 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
1310 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
1311 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
1312 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
1313 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
1314 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
1315 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
1316 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
1317 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
1318 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
1319 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
1321 * Reverted change of ABI data structures for s390 and s390x:
1322 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
1323 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
1324 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
1325 are preserved pointing straight to the same implementation as the old ones.
1326 Given that, new callers will simply provide a too-big buffer to these
1327 functions. Any applications/libraries out there that embed jmp_buf or
1328 ucontext_t in an ABI-relevant data structure that have already been rebuilt
1329 against 2.19 headers will have to rebuilt again. This is necessary in any
1330 case to revert the breakage in their ABI caused by the glibc change.
1332 * Support for file description locks is added to systems running the
1333 Linux kernel. The standard file locking interfaces are extended to
1334 operate on file descriptions, not file descriptors, via the use of
1335 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
1336 are associated with an open file instead of a process.
1338 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
1340 * The minimum Linux kernel version that this version of the GNU C Library
1341 can be used with is 2.6.32.
1343 * Running the testsuite no longer terminates as soon as a test fails.
1344 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
1345 with PASS or FAIL lines for individual tests. A summary of the results is
1346 printed, including a list of failing lists, and "make check" exits with
1347 error status if there were any unexpected failures. "make check
1348 stop-on-test-failure=y" may be used to keep the old behavior.
1350 * The am33 port, which had not worked for several years, has been removed
1353 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
1354 supported; they now act the same as _DEFAULT_SOURCE (but generate a
1355 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
1356 conflicted with POSIX (support for which was removed in 2.19), the
1357 interfaces those macros enabled remain available when compiling with
1358 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
1359 test macros defined.
1361 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
1363 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
1364 This may improve lock scaling of existing programs on TX capable systems.
1365 The lock elision code is only built with --enable-lock-elision=yes and
1366 then requires a GCC version supporting the TX builtins. With lock elision
1367 default mutexes are elided via __builtin_tbegin, if the cpu supports
1368 transactions. By default lock elision is not enabled and the elision code
1371 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
1372 copy the path argument. This allowed programs to cause posix_spawn to
1373 deference a dangling pointer, or use an unexpected pathname argument if
1374 the string was modified after the posix_spawn_file_actions_addopen
1377 * All supported architectures now use the main glibc sysdeps directory
1378 instead of some being in a separate "ports" directory (which was
1379 distributed separately before glibc 2.17).
1381 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
1382 On configurations that support it (all Linux configurations), it's now
1383 used regardless of the --enable-add-ons switch to configure. It is no
1384 longer possible to build such configurations without pthreads support.
1386 * Locale names, including those obtained from environment variables (LANG
1387 and the LC_* variables), are more tightly checked for proper syntax.
1388 setlocale will now fail (with EINVAL) for locale names that are overly
1389 long, contain slashes without starting with a slash, or contain ".." path
1390 components. (CVE-2014-0475) Previously, some valid locale names were
1391 silently replaced with the "C" locale when running in AT_SECURE mode
1392 (e.g., in a SUID program). This is no longer necessary because of the
1395 * On x86-64, the dynamic linker's lazy-binding support is now compatible
1396 with application code using Intel MPX instructions. (With all previous
1397 versions, the MPX register state could be clobbered when making calls
1398 into or out of a shared library.) Note that while the new dynamic
1399 linker is compatible with all known x86 hardware whether or not it
1400 supports Intel MPX, some x86 instruction-set emulators might fail to
1401 handle the new instruction encodings. This is known to affect Valgrind
1402 versions up through 3.9 (but will be fixed in the forthcoming 3.10
1403 release), and might affect other tools that do instruction emulation.
1405 * Support for loadable gconv transliteration modules has been removed.
1406 The support for transliteration modules has been non-functional for
1407 over a decade, and the removal is prompted by security defects. The
1408 normal gconv conversion modules are still supported. Transliteration
1409 with //TRANSLIT is still possible, and the //IGNORE specifier
1410 continues to be supported. (CVE-2014-5119)
1412 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
1413 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
1414 resulting a denial-of-service security vulnerability in applications which
1415 use functions related to iconv. (CVE-2014-6040)
1419 * The following bugs are resolved with this release:
1421 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
1422 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
1423 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
1424 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
1425 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
1426 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
1427 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
1428 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
1429 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
1430 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
1431 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
1432 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
1433 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
1434 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
1435 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
1436 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
1437 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
1438 16431, 16453, 16474, 16506, 16510, 16529
1440 * Slovenian translations for glibc messages have been contributed by the
1441 Translation Project's Slovenian team of translators.
1443 * The public headers no longer use __unused nor __block. This change is to
1444 support compiling programs that are derived from BSD sources and use
1445 __unused internally, and to support compiling with Clang's -fblock
1446 extension which uses __block.
1448 * CVE-2012-4412 The strcoll implementation caches indices and rules for
1449 large collation sequences to optimize multiple passes. This cache
1450 computation may overflow for large collation sequences and may cause a
1451 stack or buffer overflow. This is now fixed to use a slower algorithm
1452 which does not use a cache if there is an integer overflow.
1454 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
1455 rules for large collation sequences to optimize multiple passes and falls
1456 back to alloca if malloc fails, resulting in a possible stack overflow.
1457 The implementation now falls back to an uncached collation sequence lookup
1460 * CVE-2013-4788 The pointer guard used for pointer mangling was not
1461 initialized for static applications resulting in the security feature
1462 being disabled. The pointer guard is now correctly initialized to a
1463 random value for static applications. Existing static applications need
1464 to be recompiled to take advantage of the fix (bug 15754).
1466 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
1467 to the d_name member of struct dirent, or omit the terminating NUL
1468 character. (Bugzilla #14699).
1470 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
1471 aligned_alloc functions could allocate too few bytes or corrupt the
1472 heap when passed very large allocation size values (Bugzilla #15855,
1475 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
1476 for AF_INET6 has been fixed (Bugzilla #16072).
1478 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
1479 pap_CW, quz_PE, the_NP.
1481 * Substantially revised locales: gd_GB, ht_HT
1483 * The LC_ADDRESS field was updated to support country_car for almost all
1486 * ISO 1427 definitions were updated.
1488 * ISO 3166 definitions were updated.
1490 * The localedef utility now supports --big-endian and --little-endian
1491 command-line options to generate locales for a different system from that
1492 for which the C library was built.
1494 * Binary locale files now only depend on the endianness of the system for
1495 which they are generated and not on other properties of that system. As a
1496 consequence, binary files generated with new localedef may be incompatible
1497 with old versions of the GNU C Library, and binary files generated with
1498 old localedef may be incompatible with this version of the GNU C Library,
1499 in the following circumstances:
1501 + Locale files may be incompatible on m68k systems.
1503 + Locale archive files (but not separate files for individual locales) may
1504 be incompatible on systems where plain "char" is signed.
1506 * The configure option --disable-versioning has been removed. Builds with
1507 --disable-versioning had not worked for several years.
1509 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
1510 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
1512 * SystemTap probes for malloc have been introduced.
1514 * SystemTap probes for slow multiple precision fallback paths of
1515 transcendental functions have been introduced.
1517 * Support for powerpc64le has been added.
1519 * The soft-float powerpc port now supports e500 processors.
1521 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
1523 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
1524 set of header declarations that are enabled by default, even when other
1525 feature test macros or compiler options such as -std=c99 would otherwise
1526 disable some of those declarations.
1528 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
1529 conflict with POSIX. The libbsd-compat library (which was a dummy library
1530 that did nothing) has also been removed.
1532 * Preliminary documentation about Multi-Thread, Async-Signal and
1533 Async-Cancel Safety has been added.
1535 * Change of ABI data structures for s390 and s390x:
1536 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
1537 allow for future hardware extensions. All library functions that accept or
1538 return these structures were versioned in order to provide backwards
1539 compatibility with existing code. However, not all cases can be handled
1540 with interface versioning. If an application embeds either structure into
1541 another structure and that structure is passed to another compilation unit
1542 which expects the newer larger-sized object then any access to the new
1543 fields will result in undefined behaviour. Similarly any access to fields
1544 that were moved by the enlarging of the structures will cause undefined
1545 behaviour. To fix the undefined behaviour all objects that are part of the
1546 final in-memory image must agree on the size of structures, and this may
1547 require recompilation.
1551 * The following bugs are resolved with this release:
1553 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
1554 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
1555 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
1556 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
1557 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
1558 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
1559 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
1560 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
1561 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
1562 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
1563 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
1564 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
1565 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
1568 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
1569 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
1570 Distributions can re-enable building and using pt_chown via the new configure
1571 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
1572 considerable security risks and should only be used if the distribution
1573 understands and accepts the risks.
1575 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
1578 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
1579 fixed (Bugzilla #15330).
1581 * Add support for calling C++11 thread_local object destructors on thread
1582 and program exit. This needs compiler support for offloading C++11
1583 destructor calls to glibc.
1585 * Improved worst case performance of libm functions with double inputs and
1588 * Support for priority inherited mutexes in pthread condition variables on
1589 non-x86 architectures.
1591 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
1593 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
1595 * Optimized string functions for ARM. Implemented by Will Newton and
1598 * Optimized libm functions for SPARC. Implemented by David S. Miller.
1600 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
1603 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
1604 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
1606 * Added a benchmark framework to track performance of functions in glibc.
1608 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
1609 It is based on draft TS 18661 and currently enabled as a GNU extension.
1611 * On Linux, the clock function now uses the clock_gettime system call
1612 for improved precision, rather than old times system call.
1614 * Added support for version-3 tz format files. This is needed when using
1615 the tz database release 2013e or later, and affects a few unusual cases --
1616 currently only TZ='America/Godthab' for time stamps after 2037.
1618 * Added new API functions pthread_getattr_default_np and
1619 pthread_setattr_default_np to get and set the default pthread
1620 attributes of a process.
1622 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
1623 This may improve lock scaling of existing programs on TSX capable systems.
1624 When the --enable-lock-elision=yes parameter is specified at configure
1625 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
1628 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
1629 availability). Implemented by Ryan S. Arnold.
1631 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
1635 * The following bugs are resolved with this release:
1637 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
1638 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
1639 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
1640 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
1641 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
1642 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
1643 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
1644 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
1645 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
1646 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
1647 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
1648 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
1649 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
1650 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
1651 14879, 14889, 14893, 14898, 14914.
1653 * Optimization of memcpy for MIPS.
1655 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
1656 EMFILE has been fixed (Bugzilla #14889).
1658 * The add-on ports collection is now distributed in the "ports" subdirectory
1659 of the main GNU C Library distribution, rather than separately.
1661 * Port to ARM AArch64 contributed by Linaro.
1663 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
1664 Optimized versions of memcpy, memset, and memcmp added for System z10 and
1666 Implemented by Andreas Krebbel.
1668 * The new function secure_getenv allows secure access to the environment,
1669 returning NULL if running in a SUID/SGID process. This function replaces
1670 the internal function __secure_getenv.
1672 * SystemTap static probes have been added into the dynamic linker.
1673 Implemented by Gary Benson.
1675 * Optimizations of string functions strstr, strcasestr and memmem.
1676 Implemented by Maxim Kuvyrkov.
1678 * The minimum Linux kernel version that this version of the GNU C Library
1679 can be used with is 2.6.16.
1681 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
1682 powerpc POWER7. Implemented by Will Schmidt.
1684 * New configure option --disable-nscd builds the C library such that it
1685 never attempts to contact the Name Service Caching Daemon (nscd).
1686 New configure option --disable-build-nscd avoids building nscd itself;
1687 this is the default if --disable-nscd is used.
1689 * Improved support for cross-compilation, including cross-testing and
1690 bootstrap builds without a previously built glibc.
1692 * Several testsuite tests are now able to test multiple IFUNC variants of an
1693 interface, rather than just testing the one that would be chooen by
1696 * New configure options --with-bugurl and --with-pkgversion, for
1697 distributors to use to embed their bug-reporting and package version
1698 information in --help and --version output.
1700 * The ttyname and ttyname_r functions on Linux now fall back to searching for
1701 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
1702 allows creation of chroots without the procfs mounted on /proc.
1704 * The `crypt' function now fails if passed salt bytes that violate the
1705 specification for those values. On Linux, the `crypt' function will
1706 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
1707 enabled, and fail on encrypted strings using the MD5 or DES algorithm
1708 when the mode is enabled.
1710 * The `clock_*' suite of functions (declared in <time.h>) is now available
1711 directly in the main C library. Previously it was necessary to link with
1712 -lrt to use these functions. This change has the effect that a
1713 single-threaded program that uses a function such as `clock_gettime' (and
1714 is not linked with -lrt) will no longer implicitly load the pthreads
1715 library at runtime and so will not suffer the overheads associated with
1716 multi-thread support in other code such as the C++ runtime library.
1718 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
1723 * The following bugs are resolved with this release:
1725 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
1726 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
1727 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
1728 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
1729 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
1730 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
1731 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
1732 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
1733 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
1734 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
1735 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
1736 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
1737 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
1738 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
1739 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
1740 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
1741 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
1742 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
1743 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
1744 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
1745 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
1746 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
1749 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
1750 configuring glibc with:
1751 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
1752 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
1753 Implemented by H.J. Lu.
1757 + define static_assert
1759 + do not declare gets
1761 + declare at_quick_exit and quick_exit also for ISO C11
1763 + aligned_alloc. NB: The code is deliberately allows the size parameter
1764 to not be a multiple of the alignment. This is a moronic requirement
1765 in the standard but it is only a requirement on the caller, not the
1768 + timespec_get added
1770 + uchar.h support added
1772 + CMPLX, CMPLXF, CMPLXL added
1774 Implemented by Ulrich Drepper.
1776 * Support for the IA-64 has been moved to ports.
1778 * Remove support for anything but ELF binary format
1780 * Checking versions of poll, ppoll added.
1781 Implemented by Ulrich Drepper.
1783 * More generic and 64-bit performance optimizations to math functions.
1784 Implemented by Ulrich Drepper.
1786 * New configure option --enable-obsolete-rpc makes the deprecated RPC
1787 headers and functions available at compile time as they were before
1788 version 2.14. This option will be removed at some time in the future
1789 after the TI-RPC library becomes fully sufficient for the needs of
1790 existing applications.
1792 * Compatibility code for Linux kernel versions before 2.4 has been removed.
1793 Note that glibc is not expected to work with any Linux kernel version
1796 * New header <sys/auxv.h> and function getauxval allowing easy access to
1797 the AT_* key-value pairs passed from the Linux kernel. The header also
1798 defines the HWCAP_* bits associated with the AT_HWCAP key.
1800 * New locales: mag_IN
1802 * New configure option --enable-systemtap builds SystemTap static probes
1803 into libc for setjmp and longjmp and into libpthread for various operations.
1804 So far the setjmp/longjmp probes and some of the libpthread probes are
1805 provided only for i*86 and x86_64.
1806 Implemented by Roland McGrath and Rayson Ho.
1808 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
1810 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
1813 * More optimized functions for SPARC. Implemented by David S. Miller.
1815 * Improved support for cross-compilation, especially bootstrap builds
1816 without a previously built glibc.
1818 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
1819 Chris Metcalf from Tilera.
1821 * Support for the old ARM ABI has been removed from ports. Only the EABI is
1822 now supported for ARM processors.
1824 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
1825 as the name of the dynamic linker, to distinguish it from the
1826 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
1828 * Support for CRIS has been removed from ports.
1830 * A new class of installed header has been documented for low-level
1831 platform-specific functionality. PowerPC added the first instance with a
1832 function to provide time base register access. Contributed by Tulio
1833 Magno Quites Machado Filho.
1835 * ix86 configurations now install header files that are consistent with
1836 what x86-64 configurations install. These same header files can be used
1837 for -m32, -m64, or -mx32 builds.
1838 Contributed by H.J. Lu.
1840 * Math library bug fixes. A thorough audit of all open math library bugs was
1841 conducted by Joseph Myers. Significant progress was made on many math
1842 library bugs resulting in more accurate exceptions and function results.
1843 Many thanks to all those that contributed including Andreas Jaeger for his
1844 patch review and work on the x87 trigonometric instruction issues.
1846 * Timezone data is no longer installed. Timezone-related binaries and scripts
1847 will continue to be installed. Users should obtain their timezone data from
1848 their distribution provider or from the tzdata package at
1849 <ftp://munnari.oz.au/pub/>.
1853 * The following bugs are resolved with this release:
1855 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
1856 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
1857 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
1858 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
1859 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
1860 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
1861 13484, 13506, 13515, 13523, 13524, 13538, 13540
1863 * New program pldd to list loaded object of a process
1864 Implemented by Ulrich Drepper.
1866 * Add nss_db support back to glibc. No more dependency on Berkeley db
1867 and support for initgroups lookups.
1868 Implemented by Ulrich Drepper.
1870 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
1871 Contributed by HJ Lu.
1873 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
1874 Contributed by HJ Lu.
1876 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
1877 on x86-32 and x86-64.
1878 Contributed by Liubov Dmitrieva.
1880 * Optimized strchr and strrchr for SSE on x86-32.
1881 Contributed by Liubov Dmitrieva.
1883 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
1884 for x86-64 and x86-32.
1885 Contributed by Liubov Dmitrieva.
1887 * New interfaces: scandirat, scandirat64
1888 Implemented by Ulrich Drepper.
1890 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
1891 Implemented by Ulrich Drepper.
1893 * nscd now also caches the netgroup database.
1894 Implemented by Ulrich Drepper.
1896 * Integrate libm with gcc's -ffinite-math-only option.
1897 Implemented by Ulrich Drepper.
1899 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
1900 to math functions. Implemented by Ulrich Drepper.
1902 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
1903 Implemented by Ulrich Drepper.
1905 * New Linux interfaces: process_vm_readv, process_vm_writev
1907 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
1908 Implemented by Ulrich Drepper.
1910 * Optimized nearbyint and strcasecmp for PPC.
1911 Implemented by Adhemerval Zanella.
1913 * New locales: bho_IN, unm_US, es_CU, ta_LK
1917 * The following bugs are resolved with this release:
1919 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
1920 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
1921 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
1922 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
1923 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
1924 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
1925 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
1926 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
1927 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
1928 12795, 12811, 12813, 12814, 12841
1930 * The RPC implementation in libc is obsoleted. Old programs keep working
1931 but new programs cannot be linked with the routines in libc anymore.
1932 Programs in need of RPC functionality must be linked against TI-RPC.
1933 The TI-RPC implementation is IPv6 enabled and there are other benefits.
1935 Visible changes of this change include (obviously) the inability to link
1936 programs using RPC functions without referencing the TI-RPC library and the
1937 removal of the RPC headers from the glibc headers.
1938 Implemented by Ulrich Drepper.
1940 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
1941 syncfs, setns, sendmmsg
1943 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
1944 yue_HK, lij_IT, mhr_RU
1946 * New encodings: CP770, CP771, CP772, CP773, CP774
1948 * New program sotruss to trace calls through PLTs
1949 Implemented by Ulrich Drepper.
1951 * The malloc hook implementation is marked deprecated and will be removed
1952 from the default implementation in the next version. The design never
1953 worked ever since the introduction of threads. Even programs which do
1954 not create threads themselves can use multiple threads created internally.
1958 * The following bugs are resolved with this release:
1960 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
1961 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
1962 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
1963 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
1966 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
1968 * POWER7 optimizations: memset, memcmp, strncmp
1970 * New optimized string functions for x86-64: strnlen (SSE2),
1971 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
1972 Implemented by Ulrich Drepper.
1976 * The following bugs are resolved with this release:
1978 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
1979 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
1980 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
1981 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
1982 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
1983 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
1984 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
1985 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
1987 * New interfaces: pthread_getname_np, pthread_setname_np
1989 * New Linux interface: recvmmsg
1991 * STT_GNU_IFUNC implemented for Sparc by David Miller.
1993 * The dynamic linker now recognizes supported ABI versions from the
1994 EI_ABIVERSION field in the ELF header.
1995 Implemented by Ulrich Drepper.
1997 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
1998 will not be used to fill in password fields in the passwd.byname replies.
1999 Instead it is used to synthesize the shadow.byname table, should it be
2000 missing. This is a useful mode in some installations involving Solaris.
2001 Implemented by Ulrich Drepper.
2003 * New locales: kok_IN, sq_MK, cv_RU
2007 * The following bugs are resolved with this release:
2009 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
2010 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
2011 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
2012 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
2013 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
2014 10789, 10817, 10823, 10840, 10847
2016 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
2018 Implemented by Ulrich Drepper.
2020 * Checking version of longjmp added that fails if an uninitialized stack
2021 frame would be created. Implemented by Ulrich Drepper.
2023 * STT_GNU_IFUNC is now supported in static executables.
2024 Implemented by H.J. Lu.
2026 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
2028 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
2029 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
2030 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
2031 Contributed by H.J. Lu.
2033 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
2034 Implemented by Ulrich Drepper.
2036 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
2038 Contributed by H.J. Lu.
2040 * Support for fma instruction in AVX on x86-64.
2041 Implemented by H.J. Lu and Ulrich Drepper.
2043 * AVX support in x86-64 auditing support in ld.so.
2044 Implemented by H.J. Lu.
2046 * STB_GNU_UNIQUE support added.
2047 Implemented by Ulrich Drepper.
2049 * Implement second fallback mode for optimized DNS lookup for even more
2050 broken environments. If two requests from the same port are not
2051 handled correctly close the socket and open a new one before sending
2052 the second request. The 'single-request-reopen' option in /etc/resolv.conf
2053 can be used to select this mode right away, instead of rediscovering the
2054 necessity is every process again.
2055 Implemented by Ulrich Drepper.
2057 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
2058 Implemented by Adam Tkac.
2060 * Optimized iconv conversions for S390x.
2061 Implemented by Andreas Krebbel.
2063 * Using condvars with PI mutexes is now more efficient due to kernel
2064 support for requeueing to PI futexes. NPTL support added for x86-64.
2065 Implemented by Ulrich Drepper.
2067 * New locales: ps_AF, my_MM
2071 * The following bugs are resolved with this release:
2073 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
2074 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
2075 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
2076 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
2077 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
2079 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
2080 Implemented by Ulrich Drepper.
2082 * New Linux interfaces: accept4, fallocate, fallocate64.
2083 Implemented by Ulrich Drepper.
2085 * Correct declarations of string function when used in C++ code. This
2086 could lead to compile errors for invalid C++ code.
2088 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
2091 * New POSIX 2008 interface: psiginfo
2092 Implemented by Ulrich Drepper.
2094 * New ISO C++1x interfaces: quick_exit, at_quick_exit
2095 Implemented by Ulrich Drepper.
2097 * Support for selecting between multiple function definitions at runtime
2098 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
2100 * The libcrypt library can now use the hash function implementations in
2101 NSS. Implemented by Ulrich Drepper.
2103 * The malloc implementation can be compiled to be less memory efficient
2104 but higher performing in multi-threaded programs.
2105 Implemented by Ulrich Drepper.
2107 * New locales: nan_TW@latin, ks_IN
2109 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
2110 Implemented by Ulrich Drepper.
2112 * Extended printf hook support. It is possible to use user-defined types
2113 and extend existing format specifiers.
2114 Implemented by Ulrich Drepper.
2116 * Handling for group shadow files has been added.
2117 Implemented by Ulrich Drepper.
2119 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
2120 servers (the case, e.g., for some people using the built-in DNS
2121 server in ADSL modems/routers). There is a once-per-process timeout
2122 in case of a broken server. To avoid it, users can run nscd or put
2123 'options single-request' in /etc/resolv.conf.
2124 Implemented by Ulrich Drepper.
2128 * The following bugs are resolved with this release:
2130 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
2131 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
2132 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
2133 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
2134 6968, 6974, 6980, 6995, 7008, 7009, 7029
2136 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
2137 up at the same time. Implemented by Ulrich Drepper.
2139 * TLS descriptors for LD and GD on x86 and x86-64.
2140 Implemented by Alexandre Oliva.
2142 * getaddrinfo now handles DCCP and UDPlite.
2143 Implemented by Ulrich Drepper.
2145 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
2146 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
2147 Implemented by Ulrich Drepper.
2149 * New implementation of memmem, strstr, and strcasestr which is O(n).
2150 Implemented by Eric Blake.
2152 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
2154 * Implement "e" option for popen to open file descriptor with the
2155 close-on-exec flag set. Implemented by Ulrich Drepper.
2157 * Implement "b" mode for fmemopen. In this mode writes writes don't
2158 implicitly add a NUL byte and seeks from the end of the buffer really
2159 use the buffer end, not the string length as the basis.
2160 Implemented by Ulrich Drepper.
2162 * Many functions, exported and internal, now atomically set the close-on-exec
2163 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
2165 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
2167 Implemented by Pravin Satpute.
2169 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
2173 * The following bugs are resolved with this release:
2175 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
2176 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
2177 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
2178 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
2179 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
2180 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
2181 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
2183 * New locales: bo_CN, bo_IN, shs_CA.
2185 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
2187 * Sorting rules for some Indian languages (Devanagari and Gujarati).
2188 Implemented by Pravin Satpute.
2190 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
2192 * nscd caches now all timeouts for DNS entries
2193 Implemented by Ulrich Drepper.
2195 * nscd is more efficient and wakes up less often.
2196 Implemented by Ulrich Drepper.
2198 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
2199 vdprintf, and obstack_vprintf.
2200 Implemented by Jakub Jelinek.
2202 * Faster memset for x86-64.
2203 Implemented by Harsha Jagasia and H.J. Lu.
2205 * Faster memcpy on x86.
2206 Implemented by Ulrich Drepper.
2208 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
2209 Implemented by Ulrich Drepper.
2211 * Faster sqrt and sqrtf implemention for some PPC variants.
2212 Implemented by Steven Munroe.
2216 * The following bugs are resolved with this release:
2218 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
2219 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
2220 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
2221 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
2222 5071, 5103, 5104, 5112, 5113, 5184, 5186
2224 * More checking functions: fread, fread_unlocked, open*, mq_open.
2225 Implemented by Jakub Jelinek and Ulrich Drepper.
2227 * Extend fortification to C++. Implemented by Jakub Jelinek.
2229 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
2230 by not recognizing 'a' as a modifier when those specs are requested.
2231 Implemented by Jakub Jelinek.
2233 * PPC optimizations to math and string functions.
2234 Implemented by Steven Munroe.
2236 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
2237 options to be passed. Implemented by Ulrich Drepper.
2239 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
2241 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
2242 Implemented by Ulrich Drepper.
2244 * Handle private futexes in the NPTL implementation.
2245 Implemented by Jakub Jelinek and Ulrich Drepper.
2247 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
2248 Implemented by Roland McGrath and Ulrich Drepper.
2250 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
2252 * SHA-256 and SHA-512 based password encryption.
2253 Implemented by Ulrich Drepper.
2255 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
2256 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
2259 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
2260 Implemented by Ulrich Drepper.
2264 * The following bugs are resolved with this release:
2266 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
2267 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
2268 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
2269 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
2270 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
2271 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
2272 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
2275 * New Linux interfaces: epoll_pwait, sched_getcpu.
2277 * New generic interfaces: strerror_l.
2279 * nscd can now cache the services database. Implemented by Ulrich Drepper.
2283 * The following bugs are resolved with this release:
2285 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
2286 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
2287 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
2288 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
2289 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
2290 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
2291 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
2292 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
2293 3225, 3251, 3252, 3253, 3273
2295 * For Linux, the sorting of addresses returned by getaddrinfo now also
2296 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
2297 Implemented by Ulrich Drepper.
2299 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
2300 Implemented by Ulrich Drepper.
2302 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
2304 * New iconv module for MIK. Contributed by Alexander Shopov.
2306 * For sites with broken group and/or passwd database, the auto-propagate
2307 option of nscd can prevent creating ID lookup entries from the results
2308 of a name lookup and vice versa. This usually is no problem but some
2309 site might have problems with the default behavior.
2310 Implemented by Ulrich Drepper.
2312 * Iterating over entire database in NIS can be slow. With the
2313 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
2314 to trade time for memory. The entire database will be read at once.
2315 Implemented by Ulrich Drepper.
2317 * The interfaces introduced in RFC 3542 have been implemented by
2320 * Support for the new ELF hash table format was added by Ulrich Drepper.
2322 * Support for priority inheritance mutexes added by Jakub Jelinek and
2325 * Support for priority protected mutexes added by Jakub Jelinek.
2327 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
2328 or_IN, csb_PL, fy_NL, sr_ME.
2332 * More overflow detection functions.
2334 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
2335 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
2337 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
2338 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
2339 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
2340 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
2341 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
2342 by Masahide Washizawa.
2344 * It is now possible to install audit libraries for the dynamic linker using
2345 LD_AUDIT. Implemented by Ulrich Drepper.
2347 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
2348 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
2349 For a libc and libpthread that works well on Linux 2.4 kernels, we
2350 recommend using the stable 2.3 branch.
2352 * The new function open_wmemstream acts like open_memstream,
2353 but uses a wchar_t wide character buffer.
2355 * The new function ppoll is an improved version of poll, similar to pselect.
2357 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
2358 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
2359 renameat, unlinkat, linkat, symlinkat, readlinkat.
2361 * New Linux kernel system calls: unshare,
2362 inotify_init, inotify_add_watch, inotify_rm_watch.
2364 * The euidaccess function is now also known by the alias eaccess,
2365 for compatibility with some other systems.
2367 * Timezone data updated to 2006b version.
2371 * The following bugs are resolved with this release:
2373 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
2374 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
2375 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
2376 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
2377 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
2378 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
2380 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2382 * As of this release, GCC 4 can be used to compile the C Library.
2384 * Timezone data updated to 2005m version.
2388 * The following bugs are resolved with this release:
2390 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
2391 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
2392 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
2393 777, 787, 821, 822, 823, 825
2395 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2399 * Support for RFC 3678. Real implementations exist only for Linux so far.
2400 Implemented by Ulrich Drepper.
2402 * nscd can now cache entries persistently. Expiring entries are reloaded.
2403 For speedups the cache can be shared in memory with client processes.
2404 Implemented by Ulrich Drepper.
2406 * nscd can now perform SELinux checks.
2407 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
2409 * getaddrinfo queries are now cached. Canonical name lookup is performed
2411 Implemented by Ulrich Drepper.
2413 * The nothrow function attribute is used when headers are used by gcc when
2414 compiling C code. This can avoid significant amounts of exception
2417 * The malloc functions perform more error checking and are stricter when
2418 it comes to reacting on errors. The default action is to terminate
2419 the process after showing an error message. Implemented by Ulrich Drepper.
2421 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
2422 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
2424 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
2425 namespaces using the new function dlmopen(). This feature is of course,
2426 like most other dynamic loading functionality, not available in statically
2427 linked applications. Implemented by Ulrich Drepper.
2429 * Low-overhead boundary checking variants of string and some stdio functions
2430 were added. These are to be used in conjunction with a gcc patch by
2431 Jakub Jelinek which adds calls to these functions if possible.
2432 Implemented by Jakub Jelinek and Ulrich Drepper.
2434 * Old code for several operating systems and machine architectures that
2435 have not been in working condition in a long time have been removed from
2436 the main source tree maintained by the GNU C Library's maintainers.
2437 These files are now reside in the separate `ports' source module
2438 that is usable as an add-on when building the library.
2442 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
2443 interrogate the dynamic linker, compatible with the Solaris interface.
2445 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
2446 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
2448 * getifaddrs now uses the netlink interface on Linux to get its information.
2449 Implemented by Thorsten Kukuk.
2451 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
2452 Implemented by Ulrich Drepper.
2454 * support for non-executable stacks on x86 has been added. Changes mostly
2457 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
2460 * getaddrinfo now performs destination address selection according to
2465 * Thread-safe interfaces for many functions that access locale data
2466 were added in version 2.3, but these features were omitted from NEWS.
2467 Many functions have variants with an `_l' suffix that take a `locale_t'
2468 object as a parameter rather than consulting the current locale.
2469 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
2470 create and maintain `locale_t' objects. Additionally, the new function
2471 `uselocale' sets "the current locale" (as used by functions not so
2472 parameterized) set for an individual thread. These features were added
2473 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
2475 * The functions getresuid, getresgid, setresuid, and setresgid, which
2476 have long been available on Linux, are now declared in <unistd.h>
2477 and are now also available on the Hurd.
2479 * ELF thread-local storage support (TLS) now works on x86-64.
2481 * The new dynamic string token $LIB is expanded in shared library names.
2482 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
2484 * Aldy Hernandez contributed complete software floating point support for
2485 PowerPC machines with no FPU.
2487 * fexecve is implemented on Linux.
2489 * The `btowc' function should work at least twice as fast due to
2490 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
2492 * With approriate thread add-ons cancelable functions are now implemented
2493 in libc.so as well. No need to call the function in libpthread. This
2494 change allowed to finally disable the incorrect and expensive handling
2495 of weak definition in ld.so.
2497 * Yet more PLT entries in libc.so have been removed. We finally arrived
2498 at the bare minimum. Startup times improved appropriately.
2500 * Support for the new Linux/x86 system call interface was added. The
2501 AT_SYSINFO auxiliary vector entry is recognized and handled.
2505 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
2508 * iconv (the program and the interface) now accepts empty names (excluding
2509 options like //TRANSLIT) to mean "use charset of current locale".
2511 * localedef can now transliterate characters in strings which are not in
2512 the provided charmap. The information from the input locale is used.
2514 * Prelinking support was added for ELF targets. This requires additional
2515 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
2517 * Read-only stdio streams now use mmap to speed up operation by eliminating
2518 copying and buffer underflows. To use add 'm' to the mode string of
2519 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
2521 * The malloc functions were completely rewritten by Wolfram Gloger based
2522 on Doug Lea's malloc-2.7.0.c.
2524 * Isamu Hasegawa contributed a completely new and POSIX-conformant
2525 implementation of regex.
2527 * Bruno Haible upgraded the iconv and locale implementation to support
2530 * Contents of the LC_* and LANG environment variables in the CEN style are
2531 not recognized anymore. It never was used. Change by Ulrich Drepper.
2533 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
2534 thread-local storage (TLS) ABI on some platforms.
2535 Changes by Ulrich Drepper. SH support by Kaz Kojima.
2537 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
2538 EUC-JISX0213, and TSCII.
2540 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
2541 BSD-compatible interface for getting all network interface addresses.
2542 Implementation for IPv4 by Roland McGrath.
2544 * Loading of locale data is faster due to the introduction of a locale
2545 archive. Implemented by Roland McGrath and Ulrich Drepper.
2547 * Startup times are significantly reduced by not using exported functions
2548 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
2551 * Steven Munroe contributed a port to PowerPC64/Linux.
2555 * The Hurd now uses the GNU libio implementation of stdio rather than the
2556 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
2558 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
2559 with the same behavior as the Linux system call of the same name.
2563 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
2564 128-bit long double format.
2566 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
2567 IBM1161, and IBM1162 charsets.
2569 * Andreas Jaeger contributed a port to x86-64/Linux.
2571 * Peter Bruin contributed a port to PowerPC/Hurd.
2573 * libc functions using I/O streams now can handle wide-oriented streams
2576 * optimizations in the dynamic linker. Binaries created by recent binutils
2577 versions start up quicker due to reduced time spent on relocations.
2579 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
2583 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
2584 asinh, atanh, j0 for the 128-bit long double format.
2586 * Bruno Haible updated all the code handling Unicode in some form to
2587 support Unicode 3.1.
2589 * Speed of regex for single-byte locales is back to previous levels.
2590 Patch by Isamu Hasegawa.
2592 * Alpha, SPARC, and IA-64 now also using floating stacks.
2594 * Startup time of internationalized applications greatly improved through
2595 iconv cache. Use iconvconfig to generate the cache file.
2596 Contributed by Ulrich Drepper.
2598 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
2599 severe performance problems. Patch by David Mosberger.
2601 * The Hurd port got a lot more functionality like AIO, various stdio
2602 extensions, etc. Mainly done by Roland McGrath.
2604 * mtrace can now lookup symbols in shared libraries.
2608 * Intel's IA-64 math library is largely integrated. It provides fast and
2609 accurate implementatations for most basic and standard math functions
2610 in float, double, and long double format.
2612 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
2613 and asin for the 96-bit long double format and asin, log, tan for the
2614 128-bit long double format.
2616 * The beginning of a last-bit accurate math library by IBM Haifa were added.
2617 The basic double functions exist today. Contributed by Abraham Ziv
2618 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
2619 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
2621 * An asynchronous name lookup library was added. The interface is designed
2622 after POSIX AIO. The proposal was circulated beforehand to get comments.
2623 No negative ones came in. Implemented by Ulrich Drepper.
2625 * Port to S390/64bit contributed by Martin Schwidefsky
2626 <schwidefsky@de.ibm.com>.
2628 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
2629 of functions for Linux/IA-64.
2631 * The RPC code is now thread safe. Threads can now use the same service
2632 of different services at the same time. Patch by Eric Norum
2633 <eric.norum@usask.ca> with some help by Ulrich Drepper.
2635 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
2636 family of functions for Linux/S390.
2638 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
2639 of functions for Linux/x86.
2641 * Port to Linux/CRIS contributed by Axis Communications.
2645 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
2646 we can now check for namespace violations and missing declarations. The
2647 result is that almost all headers are now Unix-compliant (as defined in
2648 the upcoming XPG6). The negative side is that some programs might need
2649 corrections, too, if they depend on the incorrect form of the headers in
2650 previous versions which defined too many symbols and included too many
2653 * regex now handles multibyte character sets correctly.
2654 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
2656 * iconv (the program) does now conform to the upcoming XPG6 and handles
2657 charmaps. Instead of the charset names the path of charmaps can be
2658 provided and the conversion happens based on this data.
2659 Contributed by Ulrich Drepper.
2661 * The locale program now provides detailed information about the installed
2666 only lists the names of the supported locales
2670 provides details such as country, language, and codeset name.
2671 Contributed by Ulrich Drepper.
2675 * The gencat program now parses the input file according to the charset
2676 selected by the LC_CTYPE category. This is important for stateful
2677 character sets. To make generating catalogs easier there is a way
2678 to overwrite the charset selected by the locale: before the first
2679 message or $ quote line the catalog can contain a line like
2681 $ codeset=ISO-8859-2
2683 to select the charset (ISO-8859-2 in this case).
2685 Implemented by Shinya Hanataka and Ulrich Drepper.
2687 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
2688 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
2689 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
2691 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
2692 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
2694 * The LANGUAGE environment variable is now ignored unless the locale is
2695 changed from the default "C" locale.
2697 * The usual bug fixes.
2701 * Greg McGary added runtime support for bounds checking using gcc's
2702 new -fbounded-pointers option. ix86 target is complete. PowerPC
2705 * Thorsten Kukuk added secure mode support to nscd.
2707 * The Berkeley db libraries have been removed.
2709 Related, the nss_db module is now in a separate package since it
2710 obviously requires a database library being available.
2712 * Wide character I/O streams implemented by Ulrich Drepper.
2714 * Functions from the extended socket API added by Ulrich Drepper.
2716 * Functions feenableexcept and fedisableexcept to control the
2717 behaviour of individual exceptions have been added by Andreas Jaeger.
2719 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
2721 * The resolver code has been updated from bind 8.2.3-T5B which supports
2722 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
2725 This change could in some situations effect backward compatibility. Since
2726 now `_res' is a thread-local instead of a global variable, modifying it
2727 in one thread does not have any effect in other threads.
2729 The resolver library was also extended to allow IPv6 as the transport
2730 protocol for the requests. This work was done by Stig Venaas.
2732 * Compatibility code for K&R C compilers has been removed from the
2733 header files. A ISO C compiler is needed to use the library
2734 (conforming to either C89 or C99 standard).
2736 * Complete rewrite of the localedef program to support multibyte character
2737 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
2738 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
2739 Implemented by Ulrich Drepper.
2741 Bruno Haible significantly improved the generation and use of the data
2742 structures for the wide character tables.
2744 * Plural handling in gettext implemented by Ulrich Drepper.
2746 * The utmp daemon has been removed.
2748 * The port to MIPS-Linux has been finished by Andreas Jaeger.
2750 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
2753 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
2755 * POSIX barriers implemented by Kaz Kylheku.
2757 * POSIX spawn function family implemented by Ulrich Drepper.
2759 * POSIX spinlocks are now available.
2761 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
2763 * the configure option --enable-kernel=X.Y.Z allows to strip out
2764 compatibility for kernel versions before X.Y.Z. This is currently only
2765 implemented for Linux.
2767 * the sockaddr_in6 structure changed. The IPv6 working group added a new
2768 field sin6_scope_id. This means that all programs using IPv6 should be
2769 recompiled. Don't expect binary compatibility with previous glibc
2772 * various conversion modules for IBM character sets contributed by
2775 * IA-64 port by Jes Sorensen and HJ Lu.
2789 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
2791 * New xdr functions are added; some rpc functions are now 64bit clean.
2793 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
2795 * Fixed known incompatibilities with glibc 2.0.
2797 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
2799 * Optimized a number of functions (especially the ELF dynamic loader).
2801 * Update timezone data files.
2803 * lots of charmaps corrections
2805 * some new locale definitions and charmaps
2810 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
2811 conform to POSIX member type requirements. Symbol versions have been
2812 adjusted as needed within the library, and for direct use by applications,
2813 but there is potential for problems if third-party libraries use
2814 struct timeval as part of their interface. This does not present
2815 a problem for X and other "essential" system libraries.
2817 * An additional locale model to support C++ Standard Library locale
2818 model and probably more was implemented by Ulrich Drepper.
2820 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
2823 * Miles Bader provided the `argp' function family to support hierachical
2824 command line argument parsing, layered on top of getopt.
2826 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
2828 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
2831 * scanf recognizes the %a and %A format for scanning floating point numbers.
2833 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
2834 information and interfaces for the available integer types.
2836 * about 130 new math functions were added to implement the ISO C9x math
2839 * the new header <complex.h> contains definitions of the complex math
2840 functions from ISO C 9X.
2842 * the new header <tgmath.h> defines generic macros to use complex or
2843 real valued functions.
2845 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
2847 * Andreas Jaeger provided a test suite for the math library.
2849 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
2851 * Ulrich Drepper added character set conversion functions (iconv).
2853 * Optimized string functions have been added.
2855 * The localedata addon is now part of glibc.
2857 * An implementation of profiling shared libraries was added by Ulrich Drepper.
2859 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
2860 daemon for NSS (nscd).
2862 Missing a better place here are some numbers on improvements. Under
2863 Linux 2.1.125 un-tar-ing the kernel sources takes
2867 using local files 12.19s 6.88s 22.91s
2869 using NIS 13.92s 8.91s 26.34s
2871 using NIS & nscd 10.37s 7.34s 25.30s
2873 using NIS+ 27.57s 30.37s 640.46s
2875 using NIS+ & nscd 10.25s 7.83s 26.51s
2877 using NIS & old nscd [1] 13.83s 8.32s 29.60s
2879 Keep in mind that non-namelookup related operations dominate above times.
2880 It was just a common complain that using NIS+ unpacking the kernel is
2883 [1] The old nscd implementation is not available anymore since it was
2884 distributed with glibc up to version 2.0.98 and thus is now replaced.
2886 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
2888 * Mark Kettenis provided a Hesiod NSS module.
2890 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
2891 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
2893 * rcmd can now handle netgroups (Dick Streefland).
2895 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
2898 * Support for the IPv6 protocol has been added to the socket API, as per the
2899 latest draft standards.
2901 * Support for Linux 2.2 has been added.
2903 * Interface changes relative to the latest 2.0.x release:
2904 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2905 addseverity NEW: Unix98
2906 alphasort64 NEW: LFS
2907 argp_err_exit_status NEW: argp, GNU ext
2908 argp_error NEW: argp, GNU ext
2909 argp_failure NEW: argp, GNU ext
2910 argp_help NEW: argp, GNU ext
2911 argp_parse NEW: argp, GNU ext
2912 argp_program_bug_address NEW: argp, GNU ext
2913 argp_program_version NEW: argp, GNU ext
2914 argp_program_version_hook NEW: argp, GNU ext
2915 argp_state_help NEW: argp, GNU ext
2916 argp_usage NEW: argp, GNU ext
2917 authdes_create NEW: Secure RPC
2918 authdes_getucred NEW: Secure RPC
2919 authdes_pk_create NEW: Secure RPC
2920 backtrace NEW: GNU ext.
2921 backtrace_symbols NEW: GNU ext.
2922 backtrace_symbols_fd NEW: GNU ext.
2924 cacosf NEW: ISO C 9x
2925 cacosh NEW: ISO C 9x
2926 cacoshf NEW: ISO C 9x
2927 cacoshl NEW: ISO C 9x
2928 cacosl NEW: ISO C 9x
2935 casinf NEW: ISO C 9x
2936 casinh NEW: ISO C 9x
2937 casinhf NEW: ISO C 9x
2938 casinhl NEW: ISO C 9x
2939 casinl NEW: ISO C 9x
2941 catanf NEW: ISO C 9x
2942 catanh NEW: ISO C 9x
2943 catanhf NEW: ISO C 9x
2944 catanhl NEW: ISO C 9x
2945 catanl NEW: ISO C 9x
2946 cbc_crypt NEW: Secure RPC
2950 ccoshf NEW: ISO C 9x
2951 ccoshl NEW: ISO C 9x
2957 cimagf NEW: ISO C 9x
2958 cimagl NEW: ISO C 9x
2959 clearerr_locked REMOVED
2960 clntunix_create NEW: sunrpc ext
2962 clog10 NEW: ISO C 9x
2963 clog10f NEW: ISO C 9x
2964 clog10l NEW: ISO C 9x
2974 cprojf NEW: ISO C 9x
2975 cprojl NEW: ISO C 9x
2977 crealf NEW: ISO C 9x
2978 creall NEW: ISO C 9x
2983 csinhf NEW: ISO C 9x
2984 csinhl NEW: ISO C 9x
2987 csqrtf NEW: ISO C 9x
2988 csqrtl NEW: ISO C 9x
2992 ctanhf NEW: ISO C 9x
2993 ctanhl NEW: ISO C 9x
2995 des_setparity NEW: Secure RPC
2996 ecb_crypt NEW: Secure RPC
2997 endutxent NEW: Unix98
2999 exp10f NEW: ISO C 9x
3000 exp10l NEW: ISO C 9x
3004 fattach NEW: STREAMS
3005 fdetach NEW: STREAMS
3009 feclearexcept NEW: ISO C 9x
3010 fegetenv NEW: ISO C 9x
3011 fegetexceptflag NEW: ISO C 9x
3012 fegetround NEW: ISO C 9x
3013 feholdexcept NEW: ISO C 9x
3015 feraiseexcept NEW: ISO C 9x
3016 ferror_locked REMOVED
3017 fesetenv NEW: ISO C 9x
3018 fesetexceptflag NEW: ISO C 9x
3019 fesetround NEW: ISO C 9x
3020 fetestexcept NEW: ISO C 9x
3021 feupdateenv NEW: ISO C 9x
3022 fflush_locked REMOVED
3026 fgets_unlocked NEW: GNU ext.
3027 fileno_locked REMOVED
3039 fputc_locked REMOVED
3040 fputs_unlocked NEW: GNU ext.
3041 fread_unlocked NEW: GNU ext.
3046 fstatvfs NEW: Unix98
3050 ftruncate64 NEW: LFS
3052 fwrite_unlocked NEW: GNU ext.
3053 gai_strerror NEW: IPv6
3057 getchar_locked REMOVED
3059 getdate_err NEW: Unix98
3060 getdate_r NEW: GNU ext.
3062 getnameinfo NEW: IPv6
3063 getnetname NEW: Secure RPC
3064 getpmsg NEW: STREAMS
3065 getpt NEW: Unix98 PTY
3066 getrlimit64 NEW: LFS
3067 getutxent NEW: Unix98
3068 getutxid NEW: Unix98
3069 getutxline NEW: Unix98
3070 glob64 NEW: GNU ext.
3071 globfree64 NEW: GNU ext.
3072 gnu_get_libc_release NEW: GNU ext.
3073 gnu_get_libc_version NEW: GNU ext.
3074 grantpt NEW: Unix98 PTY
3075 host2netname NEW: Secure RPC
3077 iconv_close NEW: iconv
3078 iconv_open NEW: iconv
3079 if_freenameindex NEW: IPv6
3080 if_indextoname NEW: IPv6
3081 if_nameindex NEW: IPv6
3082 if_nametoindex NEW: IPv6
3083 in6addr_any NEW: IPv6
3084 in6addr_loopback NEW: IPv6
3085 inet6_isipv4mapped NEW: IPv6
3086 isastream NEW: STREAMS
3087 iswblank NEW: GNU ext.
3088 key_decryptsession NEW: Secure RPC
3089 key_decryptsession_pk NEW: Secure RPC
3090 key_encryptsession NEW: Secure RPC
3091 key_encryptsession_pk NEW: Secure RPC
3092 key_gendes NEW: Secure RPC
3093 key_get_conv NEW: Secure RPC
3094 key_secretkey_is_set NEW: Secure RPC
3095 key_setnet NEW: Secure RPC
3096 key_setsecret NEW: Secure RPC
3097 llrint NEW: ISO C 9x
3098 llrintf NEW: ISO C 9x
3099 llrintl NEW: ISO C 9x
3100 llround NEW: ISO C 9x
3101 llroundf NEW: ISO C 9x
3102 llroundl NEW: ISO C 9x
3107 lrintf NEW: ISO C 9x
3108 lrintl NEW: ISO C 9x
3109 lround NEW: ISO C 9x
3110 lroundf NEW: ISO C 9x
3111 lroundl NEW: ISO C 9x
3113 makecontext NEW: Unix98
3114 mempcpy NEW: GNU ext.
3117 modify_ldt NEW: kernel
3121 nearbyint NEW: ISO C 9x
3122 nearbyintf NEW: ISO C 9x
3123 nearbyintl NEW: ISO C 9x
3124 netname2host NEW: Secure RPC
3125 netname2user NEW: Secure RPC
3126 nexttoward NEW: ISO C 9x
3127 nexttowardf NEW: ISO C 9x
3128 nexttowardl NEW: ISO C 9x
3132 passwd2des NEW: Secure RPC
3134 pow10f NEW: GNU ext.
3135 pow10l NEW: GNU ext.
3138 printf_size NEW: GNU ext.
3139 printf_size_info NEW: GNU ext.
3140 profil_counter REMOVED
3141 pthread_mutexattr_getkind_np REPLACED
3142 pthread_mutexattr_setkind_np REPLACED
3143 ptsname NEW: Unix98 PTY
3144 ptsname_r NEW: Unix98 PTY
3146 putchar_locked REMOVED
3147 putgrent NEW: GNU ext.
3149 putpmsg NEW: STREAMS
3150 pututxline NEW: Unix98
3154 readdir64_r NEW: LFS
3155 remquo NEW: ISO C 9x
3156 remquof NEW: ISO C 9x
3157 remquol NEW: ISO C 9x
3159 roundf NEW: ISO C 9x
3160 roundl NEW: ISO C 9x
3162 scalbln NEW: ISO C 9x
3163 scalblnf NEW: ISO C 9x
3164 scalblnl NEW: ISO C 9x
3166 sendfile NEW: kernel
3167 setcontext NEW: Unix98
3168 setrlimit64 NEW: LFS
3169 setutxent NEW: Unix98
3171 sigignore NEW: Unix98
3172 sigqueue NEW: POSIX.1b
3173 sigrelse NEW: Unix98
3174 sigset NEW: POSIX.1b
3175 sigtimedwait NEW: POSIX.1b
3176 sigwaitinfo NEW: POSIX.1b
3177 sincos NEW: GNU ext.
3178 sincosf NEW: GNU ext.
3179 sincosl NEW: GNU ext.
3183 strcasestr NEW: GNU ext.
3184 strtoimax NEW: ISO C 9x
3185 strtoumax NEW: ISO C 9x
3186 strverscmp NEW: GNU ext.
3187 svcauthdes_stats NEW: Secure RPC
3188 svcunix_create NEW: sunrpc etx
3189 svcunixfd_create NEW: sunrpc ext
3190 swapcontext NEW: Unix98
3191 tcgetsid NEW: Unix98 PTY
3192 tdestroy NEW: GNU ext.
3193 tgamma NEW: ISO C 9x
3194 tgammaf NEW: ISO C 9x
3195 tgammal NEW: ISO C 9x
3199 truncf NEW: ISO C 9x
3200 truncl NEW: ISO C 9x
3202 unlockpt NEW: Unix98 PTY
3203 updwtmpx NEW: Unix98
3204 user2netname NEW: Secure RPC
3205 utmpxname NEW: Unix98
3206 versionsort NEW: GNU ext.
3207 versionsort64 NEW: GNU ext.
3209 wcscasecmp NEW: GNU ext.
3210 wcsncasecmp NEW: GNU ext.
3211 wcsnlen NEW: GNU ext.
3212 wcstoimax NEW: ISO C 9x
3213 wcstoll NEW: ISO C 9x
3214 wcstoull NEW: ISO C 9x
3215 wcstoumax NEW: ISO C 9x
3217 wordexp NEW: POSIX.2
3218 wordfree NEW: POSIX.2
3219 write_profiling REMOVED
3220 xdecrypt NEW: Secure RPC
3221 xdr_authdes_cred NEW: Secure RPC
3222 xdr_authdes_verf NEW: Secure RPC
3223 xdr_cryptkeyarg NEW: Secure RPC
3224 xdr_cryptkeyarg2 NEW: Secure RPC
3225 xdr_cryptkeyres NEW: Secure RPC
3226 xdr_getcredres NEW: Secure RPC
3227 xdr_key_netstarg NEW: Secure RPC
3228 xdr_key_netstres NEW: Secure RPC
3229 xdr_keybuf NEW: Secure RPC
3230 xdr_keystatus NEW: Secure RPC
3231 xdr_netnamestr NEW: Secure RPC
3232 xdr_sizeof NEW: Secure RPC
3233 xdr_unixcred NEW: sunrpc ext
3234 xencrypt NEW: Secure RPC
3235 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3246 * inet_ntoa is thread-safe
3248 * updwtmp is moved from libutil to libc
3250 * rewrite of cbrt function
3252 * update of timezone data
3266 * add atoll function
3268 * fix complex problems in Berkeley DB code
3270 * fix math functions
3274 * fixed lots of header problems (especially Linux/GNU specific)
3276 * dynamic loader preserves all registers
3278 * Roland McGrath provided support for handling of auxiliary objects in
3279 the ELF dynamic loader.
3281 * support for parallel builds is improved
3285 * GNU extensions are no longer declared by default. To enable them you
3286 must define the macro `_GNU_SOURCE' in your program or compile with
3289 * The library has changed from using GNU ld symbol aliases to using weak
3290 symbols where available. The ELF object file format supports weak
3291 symbols; GNU ld also supports weak symbols in the a.out format. (There
3292 is also now support for other GNU ld extensions in ELF. Use the
3293 `--with-elf' option to configure to indicate you have ELF, and
3294 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
3295 of many files which contained only symbol aliases, reducing the size of
3296 the source and the compiled library; many other files were renamed to
3297 less cryptic names previously occupied by the symbol alias files.
3298 There is a new header file <elf.h> for programs which operate on
3299 files in the ELF format.
3301 * Converted to Autoconf version 2, so `configure' has more options.
3302 Run `configure --help' to see the details.
3304 * The library can now be configured to build profiling, highly-optimized
3305 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
3306 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
3307 `configure' enable building these extra libraries. The shared library is
3308 built by default when using both ELF and GNU ld. When shared libraries
3309 are enabled, the new library `-ldl' is available for arbitrary run-time
3310 loading of shared objects; its interface is defined in <dlfcn.h>. The
3311 new header file <link.h> gives access to the internals of the run-time
3312 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
3313 application of same name on other systems and it provides information
3314 about dynamically linked binaries.
3316 * The C library now provides the run-time support code for profiling
3317 executables compiled with `-pg'. Programs can control the profiling code
3318 through the interface in <sys/gmon.h>. The `gmon.out' files written by
3319 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
3320 the support for this file format was contributed by David Mosberger-Tang.
3322 * The math code has been replaced with a math library based on fdlibm from
3323 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
3324 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
3325 functions. The math functions now reside in a separate library, so
3326 programs using them will need to use `-lm' their linking commands.
3328 * John C. Bowman contributed optimized ix87 assembler inline functions.
3330 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
3331 mechanism similar to that found in Solaris 2. This is now used for the
3332 group, passwd, hosts, networks, services, protocols, rpc, ethers,
3333 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
3334 file controls what services are used for each individual database. This
3335 works by loading shared libraries with names specified in `nsswitch.conf',
3336 so service modules can be changed or added at any time without even
3337 relinking any program. Currently there are the file, db, and NIS based
3338 NSS services available.
3340 * The new functions `strtoq' and `strtouq' parse integer values from
3341 strings, like `strtol' and `strtoul', but they return `long long int' and
3342 `unsigned long long int' values, respectively (64-bit quantities).
3344 * The new functions `strtof' and `strtold' parse floating-point values from
3345 strings, like `strtod', but they return `float' and `long double' values,
3346 respectively (on some machines `double' and `long double' are the same).
3348 * Ulrich Drepper has contributed new implementations of the floating-point
3349 printing and reading code used in the `printf' family of functions and
3350 `strtod', `strtof', and `strtold'. These new functions are perfectly
3351 accurate, and much faster than the old ones.
3353 * The implementation of the POSIX locale model was completely rewritten by
3354 Ulrich Drepper. This includes the new programs `localedef' and `locale'
3355 to compile the POSIX locale definition.
3357 * The former dummy implementations of the strcoll and strxfrm function are
3358 now replaced by fully functional code contributed by Ulrich Drepper. The
3359 collation information comes from the POSIX locale definitions.
3361 * The new header <langinfo.h> defines an interface for accessing
3362 various locale-dependent data (using the locale chosen with `setlocale').
3364 * Ulrich Drepper has contributed a new suite of functions for operation on
3365 wide-character and multibyte-character strings, in <wchar.h>;
3366 and classification and case conversion of wide characters, in <wctype.h>.
3367 These new functions are conforming to the ISO C, Amendement 1 specification.
3369 * There is now a second implementation of the standard I/O library available.
3370 It comes from GNU libg++ as was written by Per Bothner, heavily modified
3371 by Hongjiu Lu and made thread safe by Ulrich Drepper.
3373 * You can now use positional parameter specifications in format strings
3374 for the `printf' and `scanf' families of functions. For example,
3375 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
3376 ``Number 6, Mr Jones''. This is mainly useful when providing different
3377 format strings for different languages, whose grammars may dictate
3378 different orderings of the values being printed. To support this
3379 feature, the interface for `register_printf_handler' has changed; see
3380 the header file <printf.h> for details.
3382 * The `printf' and `scanf' families of functions now understand a new
3383 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
3384 to group numbers as indicated by the locale; for `scanf' and friends, this
3385 says to accept as valid only a number with all the proper grouping
3386 separators in the right places. In the default "C" locale, numbers are
3387 not grouped; but locales for specific countries will define the usual
3388 conventions (i.e. separate thousands with `,' in the US locale).
3390 * The pgrp functions have been regularized, slightly incompatibly but much
3391 less confusingly. The core functions are now `getpgid' and `setpgid',
3392 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
3393 argument) and BSD `setpgrp' (identical to `setpgid') functions are
3394 provided for compatibility. There is no longer an incompatible `getpgrp'
3395 with an argument declared under _BSD_SOURCE; no BSD code uses it.
3397 * The new header file <fts.h> and suite of functions simplify programs that
3398 operate on directory trees. This code comes from 4.4 BSD.
3400 * The resolver code has been updated from the BIND 4.9.5-P1 release.
3401 Parts of the code were heavily modified by Ulrich Drepper to fit in the
3402 NSS scheme used in glibc.
3404 * There is a new malloc debugging hook `__memalign_hook'.
3406 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
3407 `unsigned int' in <sys/types.h>. These are for compatibility only and
3408 their use is discouraged.
3410 * The `-lmcheck' library to enable standard malloc debugging hooks is now
3411 done differently, so that it works even without GNU ld.
3413 * New function `euidaccess' checks allowed access to a file like `access',
3414 but using the effective IDs instead of the real IDs.
3416 * The time zone data files have been updated for the latest and greatest
3417 local time conventions of the countries of the world.
3419 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
3422 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
3423 for formatting floating-point numbers. They are provided only for
3424 compatibility; new programs should use `sprintf' instead. There are
3425 also equivalent function for the `long double' floating-point type and
3426 all functions also exist in a reentrant form.
3428 * The new auxiliary library `-lutil' from 4.4 BSD contains various
3429 functions for maintaining the login-record files (primarily of use to
3430 system programs such as `login'), and convenient functions for
3431 allocating and initializing a pseudo-terminal (pty) device.
3433 * Ulrich Drepper has contributed new support for System V style
3434 shared memory and IPC on systems that support it.
3436 * Ulrich Drepper has contributed several miscellaneous new functions found
3437 in System V: The `hsearch' family of functions provide an effective
3438 implementation of hash tables; `a64l' and `l64a' provide a very simple
3439 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
3442 * Ulrich Drepper has contributed new reentrant counterparts for the
3443 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
3445 * Ulrich Drepper has contributed new, highly-optimized versions of several
3446 string functions for the i486/Pentium family of processors.
3448 * Ulrich Drepper has updated the Linux-specific code, based largely
3449 on work done in Hongjiu Lu's version of GNU libc for Linux.
3450 The GNU library now supports Linux versions 2.0.10 and later,
3451 using the ELF object file format (i[3456]86-*-linux).
3453 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
3455 * David Mosberger-Tang and Richard Henderson have ported the C library
3456 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
3457 dynamic linking support for ELF/Alpha.
3459 * Richard Henderson contributed several Alpha optimized assembler function
3460 for arithmetic and string handling.
3462 * Ulrich Drepper has contributed a new set of message catalog functions to
3463 support multiple languages using the <libintl.h> interface, for use with
3464 his new package GNU gettext. Translation volunteers have contributed
3465 catalogs of the library's messages in Spanish, German, and Korean.
3467 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
3468 program and the `catgets' function for reading the catalog files it
3469 creates. (The <libintl.h> interface is preferred; we include the
3470 <nl_types.h> interface using `catgets' only for source compatibility with
3471 programs already written to use it.)
3473 * New header file <values.h> gives SVID-compatible names for <limits.h>
3476 * Various new macros, declarations, and small header files for compatibility
3479 * New function `group_member' is a convenient way to check if a process has
3480 a given effective group ID.
3482 * When using GCC 2.7 and later, the socket functions are now declared in a
3483 special way so that passing an argument of type `struct sockaddr_in *',
3484 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
3485 `struct sockaddr *' type, does not generate a type-clash warning.
3487 * New function `error' declared in header file <error.h> is a convenient
3488 function for printing error messages and optionally exiting; this is the
3489 canonical function used in GNU programs. The new functions `err', `warn',
3490 and friends in header file <err.h> are the canonical 4.4 BSD interface for
3491 doing the same thing.
3493 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
3494 POSIX.2 `glob' function to do ~ and {...} expansion.
3496 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
3497 `clearenv' which is used in POSIX.9 is also available.
3499 * New function `getsid' returns session ID number on systems that support it.
3501 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
3502 files <db.h> and <mpool.h> provide a rich set of functions for several
3503 types of simple databases stored in memory and in files, and <ndbm.h> is
3504 an old `ndbm'-compatible interface using the `db' functions. Link with
3505 `-ldb' to get these functions.
3507 * New macro `strdupa' copies a string like `strdup', but uses local stack
3508 space from `alloca' instead of dynamic heap space from `malloc'.
3510 * New function `strnlen' is like `strlen' but searches only a given maximum
3511 number of characters for the null terminator. `stpncpy', `strndup' and
3512 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
3515 * New function `statfs' in header <sys/statfs.h>.
3517 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
3518 provide convenient functions for operating on blocks of null-terminated
3521 * A new suite of functions in <utmp.h> handle all the details of reading
3522 and writing the utmp file.
3524 * An implementation of the NIS/YP(tm) based NSS service was contributed by
3527 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
3528 completely POSIX compliant and also implemented the extended functionality
3529 to handle alternate digit representation and alternate era date formats.
3531 * Ulrich Drepper provided an implementation of the `strptime' function
3532 defined in XPG4.2 which transforms a string into a `struct tm' value.
3534 * Paul Eggert provided the tzselect shell script as part of the timezone
3535 code. The shell script makes it easy to select the correct timezone
3538 * The implementation of the malloc family of functions is completely replaced
3539 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
3540 The implementation uses the mmap function (if available) and it is
3541 optimized for the use in multi threaded programs.
3543 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
3544 functions. This new functionality is usable by specifying a special
3545 salt string and it is compatible with implementation on *BSD systems.
3547 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
3548 `getsubopt' to handle second level command line options, `bsd_signal'
3549 to access BSD style `signal' functionality, the obsolete `regexp' style
3552 * the `lchown' function is available on system which support this
3555 * The implementation of the shadow password handling function was contributed
3558 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
3560 * POSIX.1g support was added. The <sys/select.h> header is available,
3561 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
3562 implementation of `getaddrinfo'.
3566 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
3568 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
3569 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
3571 * The new function `daemon' from 4.4 BSD is useful for server programs that
3572 want to put themselves in the background.
3574 * Joel Sherrill has contributed support for several standalone boards that
3575 run without an operating system.
3577 * `printf', `scanf' and friends now accept a `q' type modifier for long
3578 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
3580 * All of the code taken from BSD (notably most of the math and networking
3581 routines) has been updated from the BSD 4.4-Lite release.
3583 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
3585 * The new functions `getdomainname' and `setdomainname' fetch or change the
3586 YP/NIS domain name. These are system calls which exist on systems which
3589 * The time zone data files have been updated for the latest international
3592 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
3593 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
3597 * The C library now includes support for Sun RPC, from Sun's free
3598 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
3599 are included. (There is still no support for YP.)
3601 * Tom Quinn has contributed a port of the C library to SGI machines running
3602 Irix 4 (mips-sgi-irix4).
3604 * The new `lockf' function is a simplified interface to the locking
3605 facilities of `fcntl', included for compatibility.
3607 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
3609 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
3611 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
3614 * The error message printed by `assert' for a failed assertion now includes
3615 the name of the program (if using GNU ld) and the name of the calling
3616 function (with versions of GCC that support this).
3618 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
3620 * The library now includes the <sys/mman.h> header file and memory
3621 management functions `mmap', `munmap', `mprotect', `msync', and
3622 `madvise', on systems that support those facilities.
3624 * The interface for `mcheck' has changed slightly: the function called to
3625 abort the program when an allocation inconsistency is detected now takes
3626 an argument that indicates the type of failure. The new function
3627 `mprobe' lets you request a consistency check for a particular block at
3628 any time (checks are normally done only when you call `free' or `realloc'
3631 * It is now possible to easily cross-compile the C library, building on one
3632 system a library to run on another machine and/or operating system. All
3633 you need to do is set the variable `HOST_CC' in `configparms' to the
3634 native compiler for programs to run on the machine you are building on (a
3635 few generator programs are used on Unix systems); set `CC' to the
3638 * The new function `fexecve' (only implemented on the GNU system) executes
3639 a program file given a file descriptor already open on the file.
3643 * Brendan Kehoe has contributed most of a port to the DEC Alpha
3644 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
3646 * You can set the variable `libprefix' in `configparms' to specify a prefix
3647 to be prepended to installed library files; this makes it easy to install
3648 the GNU C library to be linked as `-lgnuc' or whatever.
3650 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
3651 copies a limited number of characters from a string, and returns the
3652 address of the last character written.
3654 * You no longer need to check for whether the installed `stddef.h' is
3655 compatible with the GNU C library. configure now checks for you.
3657 * You can now define a per-stream `fileno' function to convert the
3658 stream's cookie into an integral file descriptor.
3660 * ``malloc (0)'' no longer returns a null pointer. Instead, it
3661 allocates zero bytes of storage, and returns a unique pointer which
3662 you can pass to `realloc' or `free'. The behavior is undefined if
3663 you dereference this pointer.
3665 * The C library now runs on Sony NEWS m68k machines running either
3666 NewsOS 3 or NewsOS 4.
3668 * The new `syscall' function is a system-dependent primitive function
3669 for invoking system calls. It has the canonical behavior on Unix
3670 systems, including unreliable return values for some calls (such as
3671 `pipe', `fork' and `getppid').
3673 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
3674 to `EAGAIN', which is the preferred name. On systems whose kernels
3675 use two distinct codes, the C library now translates EWOULDBLOCK to
3676 EAGAIN in every system call function.
3680 * The GNU C Library Reference Manual is now distributed with the library.
3681 `make dvi' will produce a DVI file of the printed manual.
3682 `make info' will produce Info files that you can read on line using C-h i
3683 in Emacs or the `info' program.
3684 Please send comments on the manual to bug-glibc-manual@gnu.org.
3686 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
3688 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
3690 * Jason Merrill has contributed a port to the Sequent Symmetry running
3691 Dynix version 3 (i386-sequent-dynix).
3693 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
3694 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
3696 * New function `memory_warnings' lets you arrange to get warnings when
3697 malloc is running out of memory to allocate, like Emacs gives you.
3699 * The C library now contains the relocating allocator used in Emacs 19 for
3700 its editing buffers. This allocator (ralloc) minimizes allocation
3701 overhead and fragmentation by moving allocated regions around whenever it
3702 needs to. You always refer to a ralloc'd region with a "handle" (a
3703 pointer to a pointer--an object of type `void **').
3705 * There is a new `printf' format: `%m' gives you the string corresponding
3706 to the error code in `errno'.
3708 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
3709 or `%[' conversion, but instead of filling in a fixed-sized buffer you
3710 pass, the `a' modifier says to fill in a `char **' you pass with a
3713 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
3714 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
3715 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
3717 * `mkstemp' is a traditional Unix function to atomically create and open a
3718 uniquely-named temporary file.
3722 * The standard location for the file that says what the local timezone is
3723 has changed again. It is now `/usr/local/etc/localtime' (or more
3724 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
3726 * The distribution no longer contains any files with names longer than 14
3729 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
3730 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
3732 * New functions `ttyslot' and `syslog' from 4.4 BSD.
3736 * The configuration process has changed quite a bit. The `configure'
3737 script is now used just like the configuration scripts for other GNU
3738 packages. The `sysdeps' directory hierarchy is much rearranged.
3739 The file `INSTALL' explains the new scheme in detail.
3741 * The header files no longer need to be processed into ANSI C and
3742 traditional C versions. There is just one set of files to install, and
3743 it will work with ANSI or old C compilers (including `gcc -traditional').
3745 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
3746 MIPS DECStation running Ultrix 4.
3748 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
3749 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
3750 made itself into a shared library.
3752 * Yet further improved support for the i386, running 4.3 BSD-like systems
3753 (such as Mach 3 with the Unix single-server), or System V.
3755 * New function `strncasecmp' to do case-insensitive string comparison
3756 with limited length.
3758 * New function `strsep' is a reentrant alternative to `strtok'.
3760 * New functions `scandir' and `alphasort' for searching directories.
3762 * New function `setenv' is a better interface to `putenv'.
3764 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
3765 function for traversing a directory tree.
3767 * The GNU obstack package is now also part of the C library.
3768 The new function `open_obstack_stream' creates a stdio stream that
3769 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
3770 formatted output directly to an obstack.
3772 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
3773 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
3775 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
3777 * The new functions `strfry' and `memfrob' do mysterious and wonderful
3778 things to your strings.
3780 * There are some new test programs: test-fseek, testmb, and testrand.
3782 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
3783 These ports are not finished, but are a good starting place for really
3784 supporting those systems.
3786 * `/etc/localtime' is now the standard location for the file that says what
3787 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
3788 This follows the general principle that `/etc' is the place for all local
3789 configuration files.
3791 * The C library header files now use `extern "C"' when used by the C++
3792 compiler, so the C library should now work with C++ code.
3794 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
3795 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
3798 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
3799 function which uses the `merge sort' algorithm, and is said to be
3800 significantly faster than the old GNU `qsort' function. Merge sort is
3801 now the standard `qsort' function. The new algorithm can require a lot
3802 of temporary storage; so, the old sorting function is called when the
3803 required storage is not available.
3805 * The C library now includes Michael Glad's Ultra Fast Crypt, which
3806 provides the Unix `crypt' function, plus some other entry points.
3808 * The code and header files taken from 4.4 BSD have been updated with the
3809 latest files released from Berkeley.
3811 ----------------------------------------------------------------------
3812 Copyright information:
3814 Copyright (C) 1992-2017 Free Software Foundation, Inc.
3816 Permission is granted to anyone to make or distribute verbatim copies
3817 of this document as received, in any medium, provided that the
3818 copyright notice and this permission notice are preserved,
3819 thus giving the recipient permission to redistribute in turn.
3821 Permission is granted to distribute modified versions
3822 of this document, or of portions of it,
3823 under the above conditions, provided also that they
3824 carry prominent notices stating who last changed them.
3827 version-control: never