1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2016 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 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
11 24731-2:2010, is supported to enable declarations of functions from that
12 TR. Note that not all functions from that TR are supported by the GNU C
15 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
16 18661-1:2014, is supported to enable declarations of functions and macros
17 from that TS. Note that most features from that TS are not supported by
20 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
21 18661-4:2015, is supported to enable declarations of functions and macros
22 from that TS. Note that most features from that TS are not supported by
25 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
26 means that in a future release, the macros “major”, “minor”, and “makedev”
27 will only be available from <sys/sysmacros.h>.
29 These macros are not part of POSIX nor XSI, and their names frequently
30 collide with user code; see for instance glibc bug 19239 and Red Hat bug
31 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
32 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
35 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
36 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions,
37 the femode_t type and the FE_DFL_MODE macro.
39 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
40 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
41 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH.
43 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
44 for the Linux quota interface which predates kernel version 2.4.22 has
47 Security related changes:
49 On ARM EABI (32-bit), generating a backtrace for execution contexts which
50 have been created with makecontext could fail to terminate due to a
51 missing .cantunwind annotation. This has been observed to lead to a hang
52 (denial of service) in some Go applications compiled with gccgo. Reported
53 by Andreas Schwab. (CVE-2016-6323)
55 The following bugs are resolved with this release:
57 [The release manager will add the list generated by
58 scripts/list-fixed-bugs.py just before the release.]
62 * The minimum Linux kernel version that this version of the GNU C Library
63 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
64 kernel version 2.6.32 or later suffices (on architectures that already
65 required kernel versions more recent than 3.2, those requirements remain
66 unchanged). Linux 3.2 or later kernel headers are required on all
69 * The pap_AN locale has been deleted. This has been deprecated for a long
70 time. It has been replaced by pap_AW & pap_CW, both of which have long
71 been included in previous releases.
73 * The readdir_r and readdir64_r functions have been deprecated. It is
74 recommended to use readdir and readdir64 instead.
76 * The type “union wait” has been removed. It was deprecated in the early
77 1990s and never part of POSIX. Application code should use the int type
78 instead of “union wait”.
80 * A new NSS action is added to facilitate large distributed system
81 administration. The action, MERGE, allows remote user stores like LDAP
82 to be merged into local user stores like /etc/groups in order to provide
83 easy to use, updated, and managed sets of merged credentials. The new
84 action can be used by configuring it in /etc/nsswitch.conf:
85 group: files [SUCCESS=merge] nis
86 Implemented by Stephen Gallagher (Red Hat).
88 * The deprecated __malloc_initialize_hook variable has been removed from the
91 * The long unused localedef --old-style option has been removed. It hasn't
92 done anything in over 16 years. Scripts using this option can safely
95 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
96 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
97 return the next representable value in the direction of positive infinity
98 and the nextdown functions return the next representable value in the
99 direction of negative infinity. These are currently enabled as GNU
102 Security related changes:
104 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
105 could result in a stack overflow when getnetbyname was called with an
106 overly long name. (CVE-2016-3075)
108 * Previously, getaddrinfo copied large amounts of address data to the stack,
109 even after the fix for CVE-2013-4458 has been applied, potentially
110 resulting in a stack overflow. getaddrinfo now uses a heap allocation
111 instead. Reported by Michael Petlan. (CVE-2016-3706)
113 * The glob function suffered from a stack-based buffer overflow when it was
114 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
115 Reported by Alexander Cherepanov. (CVE-2016-1234)
117 * The Sun RPC UDP client could exhaust all available stack space when
118 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
119 alloca plugin for GCC. (CVE-2016-4429)
121 * The IPv6 name server management code in libresolv could result in a memory
122 leak for each thread which is created, performs a failing naming lookup,
123 and exits. Over time, this could result in a denial of service due to
124 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
126 The following bugs are resolved with this release:
128 [1170] localedata: ne_NP: update Nepali locale definition file
129 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
131 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
132 [6796] math: fdim() does not set errno on overflow
133 [10354] libc: posix_spawn should use vfork() in more cases than presently
134 [11213] localedata: localedata: add copyright disclaimer to locale files
135 [12143] localedata: chr_US: new Cherokee locale
136 [12450] localedata: sgs_LT: new locale
137 [12676] localedata: ln_CD: new locale
138 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
140 [13304] math: fma, fmaf, fmal produce wrong results
141 [14259] build: --localedir arg to configure is ignored
142 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
143 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
144 [14934] localedata: es_CL: wrong first weekday chilean locale
145 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
147 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
149 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
150 [15368] nptl: raise() is not async-signal-safe
151 [15479] math: ceil, floor, round and trunc raise inexact exception
152 [15578] localedata: kk_KZ: various updates
153 [16003] localedata: pap_AN: punt old locale
154 [16137] localedata: iw_IL: punt old locale
155 [16190] localedata: eo: new esperanto locale
156 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
157 [16742] malloc: race condition: pthread_atfork() called before first
158 malloc() results in unexpected locking behaviour/deadlocks
159 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
161 [16983] localedata: postal_fmt does not allow %l and %n modifiers
162 [17565] localedata: pt_PT: wrong (work-)week start
163 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
164 [17950] build: Build fails with -msse
165 [18205] localedata: be_BY*: wrong first_weekday and first_workday
166 [18433] libc: posix_spawn does not return correctly upon failure to
168 [18453] localedata: charmaps/IBM875: incorrect codes
169 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
171 [18896] localedata: he_IL: improvements for currency
172 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
174 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
176 [19056] libc: Deprecate readdir_r
177 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
179 [19198] localedata: nl_NL: small improvements for Dutch locales
180 [19257] network: Per-thread memory leak in __res_vinit with IPv6
181 nameservers (CVE-2016-5417)
182 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
184 [19400] locale: Language missing in "iso-639.def", trivial fix in
186 [19431] malloc: Deadlock between fflush, getdelim, and fork
187 [19505] libc: Incorrect file descriptor validity checks in
188 posix_spawn_file_actions_add{open,close,dup2}
189 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
191 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
192 `intl/{gettextP,loadinfo}.h'
193 [19534] libc: execle, execlp may use malloc
194 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
195 [19573] network: res_nclose and __res_maybe_init disagree about name
196 server initialization, breaking Hesiod
197 [19575] localedata: Status of GB18030 tables
198 [19581] localedata: sr_* date_fmt string contains additional newline
199 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
201 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
202 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
203 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
204 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
206 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
208 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
210 [19610] dynamic-link: ldconfig -X removes stale symbolic links
211 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
212 [19633] locale: strfmon_l applies global locale to number formatting
213 [19642] network: Memory leak in getnameinfo
214 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
215 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
217 [19654] math: [x86_64] Need testcase for BZ #19590 fix
218 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
220 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
221 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
223 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
225 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
227 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
228 pointers and lengths in error-case.
229 [19727] locale: Converting from/to UTF-xx with iconv() does not always
230 report errors on UTF-16 surrogates values.
231 [19755] nscd: nscd assertion failure in gc
232 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
233 [19759] libc: mempcpy shouldn't be inlined
234 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
235 [19765] libc: s390 needs an optimized mempcpy
236 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
237 NAME_MAX limit assumption (CVE-2016-1234)
238 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
239 [19787] network: Missing and incorrect truncation checks in getnameinfo
240 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
242 [19791] network: Assertion failure in res_query.c with un-connectable name
244 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
245 [19822] math: libm.so install clobbers old version
246 [19825] network: resolv: send_vc can return uninitialized data in second
247 response to getaddrinfo
248 [19830] network: nss_dns: should check RDATA length against buffer length
249 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
250 confronted with A/AAAA records of invalid size
251 [19837] nss: nss_db: No retries for some long lines with a larger buffer
252 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
253 [19853] stdio: Printing IBM long double in decimal with high precision is
255 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
256 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
257 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
259 [19865] network: Assertion failure or memory leak in
260 _nss_dns_getcanonname_r
261 [19868] network: nss_dns: netent code does not skip over non-PTR records
262 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
264 [19881] string: Improve x86-64 memset
265 [19907] string: Incorrect memcpy tests
266 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
268 [19925] libc: termios.h XCASE namespace
269 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
270 [19929] libc: limits.h NL_NMAX namespace
271 [19931] stdio: Memory leak in vfprintf
272 [19957] libc: clone(CLONE_VM) access invalid parent memory
273 [19963] localedata: en_IL: New locale
274 [19989] stdio: stdio.h cuserid namespace
275 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
277 [19996] locale: langinfo.h nl_langinfo_l namespace
278 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
279 [20010] network: getaddrinfo: Stack overflow in hostent translation
281 [20012] stdio: libio: fmemopen append mode failure
282 [20014] stdio: stdio.h namespace for pre-threads POSIX
283 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
284 [20023] libc: fcntl.h timespec namespace
285 [20024] math: [x86_64] vectorized sincos trashes the stack
286 [20031] network: nss_hesiod: Heap overflow in get_txt_records
287 [20041] time: sys/time.h timespec namespace
288 [20043] libc: unistd.h missing cuserid for UNIX98 and before
289 [20044] libc: unistd.h missing pthread_atfork for UNIX98
290 [20051] libc: ttyslot in wrong header under wrong conditions
291 [20054] libc: gethostname not declared for XPG4
292 [20055] libc: termios.h missing tcgetsid for XPG4
293 [20072] dynamic-link: x86 init_cpu_features is called twice in static
295 [20073] libc: sys/stat.h fchmod namespace
296 [20074] libc: stdlib.h rand_r namespace
297 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
298 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
300 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
301 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
303 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
304 [20119] libc: Wrong mask for processors level type from CPUID
305 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
306 AS not supporting AVX512
307 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
309 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
310 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
312 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
313 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
314 [20178] libc: posix_spawn{p} should not call exit
315 [20191] stdio: libio: vtables hardening
316 [20195] string: FMA4 detection requires CPUID execution with register
318 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
319 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
321 [20212] math: acos (sNaN) returns sNaN
322 [20213] math: asin (sNaN) returns sNaN
323 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
324 [20218] math: [i386] asinhl (sNaN) returns sNaN
325 [20219] math: [i386] atanhl (sNaN) returns sNaN
326 [20222] stdio: fopencookie: Mangle function pointers
327 [20224] math: [i386] cbrtl (sNaN) returns sNaN
328 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
329 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
331 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
332 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
333 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
334 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
335 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
336 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
337 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
338 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
339 [20240] math: modf (sNaN) returns sNaN
340 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
341 [20250] math: frexp (sNaN) returns sNaN
342 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
343 [20255] math: [i386] fdim, fdimf return with excess range and precision /
345 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
346 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
347 subscript is below array bounds [-Werror=array-bounds]
348 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
349 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
351 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
352 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
354 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
356 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
357 [20316] localedata: id_ID: Februari instead of Pebruari
358 [20327] string: POWER8 strcasecmp returns incorrect result
359 [20347] math: Failure: Test: j0_downward (0xap+0)
360 [20348] libc: FAIL: misc/tst-preadvwritev64
361 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
362 [20350] libc: There is no test for p{read,write}64
363 [20357] math: Incorrect cos result for 1.5174239687223976
364 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
368 * Unicode 8.0.0 Support: Character encoding, character type info, and
369 transliteration tables are all updated to Unicode 8.0.0, using new
370 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
371 These updates cause user visible changes, such as the fixes for bugs
372 89, 16061, and 18568.
374 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
375 kernel-internal CPU set size. This means that requests that change the
376 CPU affinity which failed before (for example, an all-ones CPU mask) will
377 now succeed. Applications that need to determine the effective CPU
378 affinities need to call sched_getaffinity or pthread_getaffinity_np after
379 setting it because the kernel can adjust it (and the previous size check
380 would not detect this in the majority of cases).
382 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
383 the following new symbols are used: fts64_children, fts64_close,
384 fts64_open, fts64_read and fts64_set.
386 * getaddrinfo now detects certain invalid responses on an internal netlink
387 socket. If such responses are received, an affected process will
388 terminate with an error message of "Unexpected error <number> on netlink
389 descriptor <number>" or "Unexpected netlink response of size <number> on
390 descriptor <number>". The most likely cause for these errors is a
391 multi-threaded application which erroneously closes and reuses the netlink
392 file descriptor while it is used by getaddrinfo.
394 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
395 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
396 unnecessary serialization of memory allocation requests across threads.
397 The defect is now corrected. Users should see a substantial increase in
398 the concurent throughput of allocation requests for applications which
399 trigger this bug. Affected applications typically create and
400 destroy threads frequently. (Bug 19048 was reported and analyzed by
403 * There is now a --disable-timezone-tools configure option for disabling the
404 building and installing of the timezone related utilities (zic, zdump, and
405 tzselect). This is useful for people who build the timezone data and code
406 independent of the GNU C Library.
408 * The obsolete header <regexp.h> has been removed. Programs that require
409 this header must be updated to use <regex.h> instead.
411 * The obsolete functions bdflush, create_module, get_kernel_syms,
412 query_module and uselib are no longer available to newly linked binaries;
413 the header <sys/kdaemon.h> has been removed. These functions and header
414 were specific to systems using the Linux kernel and could not usefully be
415 used with the GNU C Library on systems with version 2.6 or later of the
418 * Optimized string, wcsmbs and memory functions for IBM z13.
419 Implemented by Stefan Liebler.
421 * Newly linked programs that define a variable called signgam will no longer
422 have it set by the lgamma, lgammaf and lgammal functions. Programs that
423 require signgam to be set by those functions must ensure that they use the
424 variable provided by the GNU C Library and declared in <math.h>, without
425 defining their own copy.
427 * The minimum GCC version that can be used to build this version of the GNU
428 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
429 still be used to compile programs using the GNU C Library.
431 Security related changes:
433 * An out-of-bounds value in a broken-out struct tm argument to strftime no
434 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
436 * The LD_POINTER_GUARD environment variable can no longer be used to disable
437 the pointer guard feature. It is always enabled. Previously,
438 LD_POINTER_GUARD could be used to disable security hardening in binaries
439 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
442 * An integer overflow in hcreate and hcreate_r could lead to an
443 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
445 * The catopen function no longer has unbounded stack usage. Reported by
448 * The nan, nanf and nanl functions no longer have unbounded stack usage
449 depending on the length of the string passed as an argument to the
450 functions. Reported by Joseph Myers. (CVE-2014-9761)
452 * A stack-based buffer overflow was found in libresolv when invoked from
453 libnss_dns, allowing specially crafted DNS responses to seize control
454 of execution flow in the DNS client. The buffer overflow occurs in
455 the functions send_dg (send datagram) and send_vc (send TCP) for the
456 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
457 family. The use of AF_UNSPEC triggers the low-level resolver code to
458 send out two parallel queries for A and AAAA. A mismanagement of the
459 buffers used for those queries could result in the response of a query
460 writing beyond the alloca allocated buffer created by
461 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
462 the overflow. Thanks to the Google Security Team and Red Hat for
463 reporting the security impact of this issue, and Robert Holiday of
464 Ciena for reporting the related bug 18665. (CVE-2015-7547)
466 The following bugs are resolved with this release:
468 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
469 [887] math: Math library function "logb" and "nextafter" inconsistent
470 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
471 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
472 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
473 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
475 [4404] localedata: German translation of "Alarm clock" is misleading
476 [6799] math: nextafter() and nexttoward() doen't set errno on
477 overflow/underflow errors
478 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
480 [10432] nis: _nss_nis_setnetgrent assertion failure
481 [11460] libc: fts has no LFS support
482 [12926] network: getaddrinfo()/make_request() may spin forever
483 [13065] nptl: Race condition in pthread barriers
484 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
485 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
487 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
488 [14912] libc: Rename non-installed bits/*.h headers
489 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
490 [15367] math: Let gcc use __builtin_isinf
491 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
492 [15421] math: lgamma wrongly sets signgam for ISO C
493 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
494 FE_INVALID with argument out of range
495 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
497 [15786] dynamic-link: ifunc resolver functions can smash function
499 [15918] math: Unnecessary check for equality in hypotf()
500 [16061] localedata: Review / update transliteration data
501 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
503 [16141] time: strptime %z offset restriction
504 [16171] math: drem should be alias of remainder
505 [16296] math: fegetround is pure?
506 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
507 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
509 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
510 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
512 [16422] math: [powerpc] math-float, math-double failing llrint tests with
513 "Exception "Inexact" set" on ppc32
514 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
515 [16517] math: Missing underflow exception from tanf/tan/tanl
516 [16519] math: Missing underflow exception from sinhf
517 [16520] math: Missing underflow exception from tanhf
518 [16521] math: Missing underflow exception from exp2
519 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
521 [16734] stdio: fopen calls mmap to allocate its buffer
522 [16961] math: nan function incorrect handling of bad sequences
523 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
524 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
525 [16985] locale: localedef: confusing error message when opening output
527 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
528 [17197] locale: Redundant shift character in iconv conversion output at
530 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
531 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
532 [17250] dynamic-link: static linking breaks nss loading
533 (getaddrinfo/getpwnam/etc...)
534 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
536 [17441] math: isnan() should use __builtin_isnan() in GCC
537 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
538 (related to lock elision)
539 [17787] manual: Exponent on page 324 of the PDF ends prematurely
540 [17886] time: strptime should be able to parse "Z" as a timezone with %z
541 [17887] time: strptime should be able to parse "+01:00" style timezones
542 [17905] libc: catopen() Multiple unbounded stack allocations
544 [18084] libc: backtrace (..., 0) dumps core on x86
545 [18086] libc: nice() sets errno to 0 on success
546 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
547 is too large (CVE-2015-8778)
548 [18251] dynamic-link: SONAME missing when audit modules provides path
549 [18265] libc: add attributes for wchar string and memory functions
550 [18370] math: csqrt missing underflows
551 [18421] libc: [hppa] read-only segment has dynamic relocations
552 [18472] libc: Obsolete syscall wrappers should be compat symbols
553 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
554 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
555 [18525] localedata: Remove locale timezone information
556 [18560] libc: [powerpc] spurious bits/ipc.h definitions
557 [18568] localedata: Update locale data to Unicode 8.0
558 [18589] locale: sort-test.sh fails at random
559 [18595] math: ctan, ctanh missing underflows
560 [18604] libc: assert macro-expands its argument
561 [18610] math: S390: fetestexcept() reports any exception if DXC-code
562 contains a vector instruction exception.
563 [18611] math: j1, jn missing errno setting on underflow
564 [18618] localedata: sync Chechen locale definitions with other *_RU
566 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
567 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
568 [18665] network: In send_dg, the recvfrom function is NOT always using the
569 buffer size of a newly created buffer (CVE-2015-7547)
570 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
572 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
574 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
575 [18699] math: tilegx cproj() for various complex infinities does not yield
577 [18724] libc: Harden put*ent functions against data injection
578 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
579 [18755] build: build errors with -DNDEBUG
580 [18757] stdio: fmemopen fails to set errno on failure
581 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
583 [18781] libc: openat64 lacks O_LARGEFILE
584 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
585 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
586 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
587 [18790] math: [ldbl-128ibm] tanhl inaccurate
588 [18795] libc: stpncpy fortification misses buffer lengths that are
590 [18796] build: build fails for --disable-mathvec
591 [18803] math: hypot missing underflows
592 [18820] stdio: fmemopen may leak memory on failure
593 [18823] math: csqrt spurious underflows
594 [18824] math: fma spurious underflows
595 [18825] math: pow missing underflows
596 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
597 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
598 [18870] build: sem_open.c fails to compile with missing symbol
600 [18872] stdio: Fix memory leak in printf_positional
601 [18873] libc: posix_fallocate overflow check ineffective
602 [18875] math: Excess precision leads incorrect libm
603 [18877] libc: arm: mmap offset regression
604 [18887] libc: memory corruption when using getmntent on blank lines
605 [18918] localedata: hu_HU: change time to HH:MM:SS format
606 [18921] libc: Regression: extraneous stat() and fstat() performed by
608 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
609 binaries (CVE-2015-8777)
610 [18951] math: tgamma missing underflows
611 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
613 [18953] localedata: lt_LT: change currency symbol to the euro
614 [18956] math: powf inaccuracy
615 [18961] math: [i386] exp missing underflows
616 [18966] math: [i386] exp10 missing underflows
617 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
618 [18969] build: multiple string test failures due to missing locale
620 [18970] libc: Reference of pthread_setcancelstate in libc.a
621 [18977] math: float / long double Bessel functions not in XSI POSIX
622 [18980] math: i386 libm functions return with excess range and precision
623 [18981] math: i386 scalb*, ldexp return with excess range and precision
624 [18982] stdio: va_list and vprintf
625 [18985] time: Passing out of range data to strftime() causes a segfault
627 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
628 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
629 [19012] locale: iconv_open leaks memory on error path
630 [19016] math: clog, clog10 inaccuracy
631 [19018] nptl: Mangle function pointers in tls_dtor_list
632 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
633 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
634 [19048] malloc: malloc: arena free list can become cyclic, increasing
636 [19049] math: [powerpc] erfc incorrect zero sign
637 [19050] math: [powerpc] log* incorrect zero sign
638 [19058] math: [x86_64] Link fail with -fopenmp and -flto
639 [19059] math: nexttoward overflow incorrect in non-default rounding modes
640 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
641 [19074] network: Data race in _res_hconf_reorder_addrs
642 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
643 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
644 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
646 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
648 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
649 [19086] manual: posix_fallocate64 documented argument order is wrong.
650 [19088] math: lround, llround missing exceptions close to overflow
652 [19094] math: lrint, llrint missing exceptions close to overflow threshold
653 [19095] math: dbl-64 lrint incorrect for 64-bit long
654 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
655 [19124] dynamic-link: ld.so failed to build with older assmebler
656 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
657 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
658 [19134] math: [powerpc32] lround, lroundf spurious exceptions
659 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
660 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
661 pthread_setaffinity_np
662 [19156] math: [ldbl-128] j0l spurious underflows
663 [19164] nptl: tst-getcpu fails with many possible CPUs
664 [19168] math: math/test-ildoubl and math/test-ldouble failure
665 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
666 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
668 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
669 (FE_NOMASK_ENV) do not clear SSE exceptions
670 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
671 _int_new_arena/reused_arena
672 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
673 [19201] math: dbl-64 remainder incorrect sign of zero result
674 [19205] math: bits/math-finite.h conditions do not match math.h and
676 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
677 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
678 for C99-based standards
679 [19212] libc: features.h not -Wundef clean
680 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
682 [19214] libc: Family and model identification for AMD CPU's are incorrect.
683 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
684 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
686 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
688 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
690 [19242] libc: strtol incorrect in Turkish locales
691 [19243] malloc: reused_arena can pick an arena on the free list, leading
692 to an assertion failure and reference count corruption
693 [19253] time: tzset() ineffective when temporary TZ did not include DST
695 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
696 [19270] math: [hppa] Shared libm missing __isnanl
697 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
698 MAP_HUGETLB and MAP_STACK defines
699 [19313] nptl: Wrong __cpu_mask for x32
700 [19347] libc: grantpt: try to force a specific gid even without pt_chown
701 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
702 [19350] math: [ldbl-128ibm] sinhl spurious overflows
703 [19351] math: [ldbl-128ibm] logl inaccurate near 1
704 [19363] time: x32: times() return value wrongly truncates/sign extends
706 [19367] dynamic-link: Improve branch prediction on Silvermont
707 [19369] network: Default domain name not reset by res_ninit when "search"
708 / "domain" entry is removed from resolv.conf
709 [19375] math: powerpc: incorrect results for POWER7 logb with negative
711 [19385] localedata: bg_BG: time separator should be colon, not comma
712 [19408] libc: linux personality syscall wrapper may erroneously return an
713 error on 32-bit architectures
714 [19415] libc: dladdr returns wrong names on hppa
715 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
716 IBM905, IBM907, and IBM909
717 [19439] math: Unix98 isinf and isnan functions conflict with C++11
718 [19443] build: build failures with -DDEBUG
719 [19451] build: Make check fails on test-double-vlen2
720 [19462] libc: Glibc failed to build with -Os
721 [19465] math: Wrong code with -Os
722 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
724 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
726 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
727 [19486] math: S390: Math tests fail with "Exception Inexact set".
728 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
729 [19550] libc: [mips] mmap negative offset handling inconsistent with other
731 [19590] math: Fail to build shared objects that use libmvec.so functions.
735 * The following bugs are resolved with this release:
737 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
738 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
739 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
740 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
741 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
742 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
743 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
744 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
745 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
746 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
747 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
748 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
749 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
750 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
751 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
752 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
753 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
754 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
755 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
756 18657, 18676, 18694, 18696, 18887.
758 * Cache information can be queried via sysconf() function on s390 e.g. with
759 _SC_LEVEL1_ICACHE_SIZE as argument.
761 * A buffer overflow in gethostbyname_r and related functions performing DNS
762 requests has been fixed. If the NSS functions were called with a
763 misaligned buffer, the buffer length change due to pointer alignment was
764 not taken into account. This could result in application crashes or,
765 potentially arbitrary code execution, using crafted, but syntactically
766 valid DNS responses. (CVE-2015-1781)
768 * The time zone file parser has been made more robust against crafted time
769 zone files, avoiding heap buffer overflows related to the processing of
770 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
771 large time zone data files. Overly long time zone specifiers in the TZ
772 variable no longer result in stack overflows and crashes.
774 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
775 for LD and GD on x86 and x86-64, has been implemented. You will need
776 binutils-2.24 or later to enable this optimization.
778 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
779 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
780 Hat). These updates cause user visible changes, such as the fix for bug
783 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
784 and getXXbyYY NSS calls for the same database, causing a denial-of-service
785 condition in some applications.
787 * Added vector math library named libmvec with the following vectorized x86_64
788 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
790 The library can be disabled with --disable-mathvec. Use of the functions is
791 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
792 Shared library libmvec.so is linked in as needed when using -lm (no need to
793 specify -lmvec explicitly for not static builds).
794 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
796 * A new fmemopen implementation has been added with the goal of POSIX
797 compliance. The new implementation fixes the following long-standing
798 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
799 old implementation is still present for use be by existing binaries.
801 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
802 releases. It has been fixed to match 2.19 and older, but binaries built
803 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
805 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
806 Contributed by Roland McGrath (Google).
808 * The header <regexp.h> is deprecated, and will be removed in a future
809 release. Use of this header will trigger a deprecation warning.
810 Application developers should update their code to use <regex.h> instead.
812 This header was formerly part of SUS, but was deprecated in 1994 and
813 removed from the standard in 2001. Also, the glibc implementation
814 leaks memory. See BZ#18681 for more details.
818 * The following bugs are resolved with this release:
820 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
821 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
822 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
823 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
824 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
825 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
826 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
827 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
828 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
829 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
832 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
833 too little memory for the to-be-scanned arguments and overflow the
834 allocated buffer. The implementation now correctly computes the required
835 buffer size when using malloc, and switches to malloc from alloca as
838 * A new semaphore algorithm has been implemented in generic C code for all
839 machines. Previous custom assembly implementations of semaphore were
840 difficult to reason about or ensure that they were safe. The new version
841 of semaphore supports machines with 64-bit or 32-bit atomic operations.
842 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
843 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
845 * Port to Altera Nios II has been contributed by Mentor Graphics.
847 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
848 implementations for powerpc64/powerpc64le.
849 Implemented by Adhemerval Zanella (IBM).
851 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
852 and powerpc64le. This may improve lock scaling of existing programs on
853 HTM capable systems. The lock elision code is only enabled with
854 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
855 powerpc will issue a transaction abort on every syscall to avoid side
856 effects being visible outside transactions.
858 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
859 AArch64. Contributed by ARM Ltd.
861 * i386 memcpy functions optimized with SSE2 unaligned load/store.
863 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
864 under certain input conditions resulting in the execution of a shell for
865 command substitution when the application did not request it. The
866 implementation now checks WRDE_NOCMD immediately before executing the
867 shell and returns the error WRDE_CMDSUB as expected.
869 * CVE-2012-3406 printf-style functions could run into a stack overflow when
870 processing format strings with a large number of format specifiers.
872 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
873 infinite loop if the DNS response contained a PTR record of an unexpected
876 * The minimum GCC version that can be used to build this version of the GNU
877 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
878 still be used to compile programs using the GNU C Library.
880 * The GNU C Library is now built with -Werror by default. This can be
881 disabled by configuring with --disable-werror.
883 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
885 * The obsolete sigvec function has been removed. This was the original
886 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
887 programs have been using instead for about 25 years. Of course, ABI
888 compatibility for old binaries using sigvec remains intact.
890 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
891 with newer versions of bison.
893 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
894 The original MIPS o32 hard-float ABI requires an FPU where double-precision
895 registers overlay two consecutive single-precision registers. MIPS32R2
896 introduced a new FPU mode (FR=1) where double-precision registers extend the
897 corresponding single-precision registers which is incompatible with the
898 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
899 require the use of FR=1 making a transition necessary. New o32 ABI
900 extensions enable users to migrate over time from the original o32 ABI
901 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
902 tracks the ABI of any loaded object and verifies that new objects are
903 compatible. Mode transitions will also be requested as required and
904 unsupportable objects will be rejected. The ABI checks include both soft and
905 hard float ABIs for o32, n32 and n64.
907 GCC 5 with GNU binutils 2.25 onwards:
908 It is strongly recommended that all o32 system libraries are built using the
909 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
910 with the original and all new o32 ABI extensions. Configure a MIPS GCC
911 compiler using --with-fp-32=xx to set this by default.
915 * The following bugs are resolved with this release:
917 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
918 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
919 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
920 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
921 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
922 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
923 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
924 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
925 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
926 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
927 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
928 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
929 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
930 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
931 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
933 * Reverted change of ABI data structures for s390 and s390x:
934 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
935 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
936 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
937 are preserved pointing straight to the same implementation as the old ones.
938 Given that, new callers will simply provide a too-big buffer to these
939 functions. Any applications/libraries out there that embed jmp_buf or
940 ucontext_t in an ABI-relevant data structure that have already been rebuilt
941 against 2.19 headers will have to rebuilt again. This is necessary in any
942 case to revert the breakage in their ABI caused by the glibc change.
944 * Support for file description locks is added to systems running the
945 Linux kernel. The standard file locking interfaces are extended to
946 operate on file descriptions, not file descriptors, via the use of
947 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
948 are associated with an open file instead of a process.
950 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
952 * The minimum Linux kernel version that this version of the GNU C Library
953 can be used with is 2.6.32.
955 * Running the testsuite no longer terminates as soon as a test fails.
956 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
957 with PASS or FAIL lines for individual tests. A summary of the results is
958 printed, including a list of failing lists, and "make check" exits with
959 error status if there were any unexpected failures. "make check
960 stop-on-test-failure=y" may be used to keep the old behavior.
962 * The am33 port, which had not worked for several years, has been removed
965 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
966 supported; they now act the same as _DEFAULT_SOURCE (but generate a
967 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
968 conflicted with POSIX (support for which was removed in 2.19), the
969 interfaces those macros enabled remain available when compiling with
970 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
973 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
975 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
976 This may improve lock scaling of existing programs on TX capable systems.
977 The lock elision code is only built with --enable-lock-elision=yes and
978 then requires a GCC version supporting the TX builtins. With lock elision
979 default mutexes are elided via __builtin_tbegin, if the cpu supports
980 transactions. By default lock elision is not enabled and the elision code
983 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
984 copy the path argument. This allowed programs to cause posix_spawn to
985 deference a dangling pointer, or use an unexpected pathname argument if
986 the string was modified after the posix_spawn_file_actions_addopen
989 * All supported architectures now use the main glibc sysdeps directory
990 instead of some being in a separate "ports" directory (which was
991 distributed separately before glibc 2.17).
993 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
994 On configurations that support it (all Linux configurations), it's now
995 used regardless of the --enable-add-ons switch to configure. It is no
996 longer possible to build such configurations without pthreads support.
998 * Locale names, including those obtained from environment variables (LANG
999 and the LC_* variables), are more tightly checked for proper syntax.
1000 setlocale will now fail (with EINVAL) for locale names that are overly
1001 long, contain slashes without starting with a slash, or contain ".." path
1002 components. (CVE-2014-0475) Previously, some valid locale names were
1003 silently replaced with the "C" locale when running in AT_SECURE mode
1004 (e.g., in a SUID program). This is no longer necessary because of the
1007 * On x86-64, the dynamic linker's lazy-binding support is now compatible
1008 with application code using Intel MPX instructions. (With all previous
1009 versions, the MPX register state could be clobbered when making calls
1010 into or out of a shared library.) Note that while the new dynamic
1011 linker is compatible with all known x86 hardware whether or not it
1012 supports Intel MPX, some x86 instruction-set emulators might fail to
1013 handle the new instruction encodings. This is known to affect Valgrind
1014 versions up through 3.9 (but will be fixed in the forthcoming 3.10
1015 release), and might affect other tools that do instruction emulation.
1017 * Support for loadable gconv transliteration modules has been removed.
1018 The support for transliteration modules has been non-functional for
1019 over a decade, and the removal is prompted by security defects. The
1020 normal gconv conversion modules are still supported. Transliteration
1021 with //TRANSLIT is still possible, and the //IGNORE specifier
1022 continues to be supported. (CVE-2014-5119)
1024 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
1025 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
1026 resulting a denial-of-service security vulnerability in applications which
1027 use functions related to iconv. (CVE-2014-6040)
1031 * The following bugs are resolved with this release:
1033 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
1034 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
1035 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
1036 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
1037 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
1038 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
1039 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
1040 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
1041 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
1042 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
1043 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
1044 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
1045 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
1046 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
1047 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
1048 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
1049 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
1050 16431, 16453, 16474, 16506, 16510, 16529
1052 * Slovenian translations for glibc messages have been contributed by the
1053 Translation Project's Slovenian team of translators.
1055 * The public headers no longer use __unused nor __block. This change is to
1056 support compiling programs that are derived from BSD sources and use
1057 __unused internally, and to support compiling with Clang's -fblock
1058 extension which uses __block.
1060 * CVE-2012-4412 The strcoll implementation caches indices and rules for
1061 large collation sequences to optimize multiple passes. This cache
1062 computation may overflow for large collation sequences and may cause a
1063 stack or buffer overflow. This is now fixed to use a slower algorithm
1064 which does not use a cache if there is an integer overflow.
1066 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
1067 rules for large collation sequences to optimize multiple passes and falls
1068 back to alloca if malloc fails, resulting in a possible stack overflow.
1069 The implementation now falls back to an uncached collation sequence lookup
1072 * CVE-2013-4788 The pointer guard used for pointer mangling was not
1073 initialized for static applications resulting in the security feature
1074 being disabled. The pointer guard is now correctly initialized to a
1075 random value for static applications. Existing static applications need
1076 to be recompiled to take advantage of the fix (bug 15754).
1078 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
1079 to the d_name member of struct dirent, or omit the terminating NUL
1080 character. (Bugzilla #14699).
1082 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
1083 aligned_alloc functions could allocate too few bytes or corrupt the
1084 heap when passed very large allocation size values (Bugzilla #15855,
1087 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
1088 for AF_INET6 has been fixed (Bugzilla #16072).
1090 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
1091 pap_CW, quz_PE, the_NP.
1093 * Substantially revised locales: gd_GB, ht_HT
1095 * The LC_ADDRESS field was updated to support country_car for almost all
1098 * ISO 1427 definitions were updated.
1100 * ISO 3166 definitions were updated.
1102 * The localedef utility now supports --big-endian and --little-endian
1103 command-line options to generate locales for a different system from that
1104 for which the C library was built.
1106 * Binary locale files now only depend on the endianness of the system for
1107 which they are generated and not on other properties of that system. As a
1108 consequence, binary files generated with new localedef may be incompatible
1109 with old versions of the GNU C Library, and binary files generated with
1110 old localedef may be incompatible with this version of the GNU C Library,
1111 in the following circumstances:
1113 + Locale files may be incompatible on m68k systems.
1115 + Locale archive files (but not separate files for individual locales) may
1116 be incompatible on systems where plain "char" is signed.
1118 * The configure option --disable-versioning has been removed. Builds with
1119 --disable-versioning had not worked for several years.
1121 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
1122 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
1124 * SystemTap probes for malloc have been introduced.
1126 * SystemTap probes for slow multiple precision fallback paths of
1127 transcendental functions have been introduced.
1129 * Support for powerpc64le has been added.
1131 * The soft-float powerpc port now supports e500 processors.
1133 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
1135 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
1136 set of header declarations that are enabled by default, even when other
1137 feature test macros or compiler options such as -std=c99 would otherwise
1138 disable some of those declarations.
1140 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
1141 conflict with POSIX. The libbsd-compat library (which was a dummy library
1142 that did nothing) has also been removed.
1144 * Preliminary documentation about Multi-Thread, Async-Signal and
1145 Async-Cancel Safety has been added.
1147 * Change of ABI data structures for s390 and s390x:
1148 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
1149 allow for future hardware extensions. All library functions that accept or
1150 return these structures were versioned in order to provide backwards
1151 compatibility with existing code. However, not all cases can be handled
1152 with interface versioning. If an application embeds either structure into
1153 another structure and that structure is passed to another compilation unit
1154 which expects the newer larger-sized object then any access to the new
1155 fields will result in undefined behaviour. Similarly any access to fields
1156 that were moved by the enlarging of the structures will cause undefined
1157 behaviour. To fix the undefined behaviour all objects that are part of the
1158 final in-memory image must agree on the size of structures, and this may
1159 require recompilation.
1163 * The following bugs are resolved with this release:
1165 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
1166 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
1167 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
1168 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
1169 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
1170 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
1171 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
1172 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
1173 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
1174 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
1175 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
1176 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
1177 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
1180 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
1181 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
1182 Distributions can re-enable building and using pt_chown via the new configure
1183 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
1184 considerable security risks and should only be used if the distribution
1185 understands and accepts the risks.
1187 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
1190 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
1191 fixed (Bugzilla #15330).
1193 * Add support for calling C++11 thread_local object destructors on thread
1194 and program exit. This needs compiler support for offloading C++11
1195 destructor calls to glibc.
1197 * Improved worst case performance of libm functions with double inputs and
1200 * Support for priority inherited mutexes in pthread condition variables on
1201 non-x86 architectures.
1203 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
1205 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
1207 * Optimized string functions for ARM. Implemented by Will Newton and
1210 * Optimized libm functions for SPARC. Implemented by David S. Miller.
1212 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
1215 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
1216 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
1218 * Added a benchmark framework to track performance of functions in glibc.
1220 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
1221 It is based on draft TS 18661 and currently enabled as a GNU extension.
1223 * On Linux, the clock function now uses the clock_gettime system call
1224 for improved precision, rather than old times system call.
1226 * Added support for version-3 tz format files. This is needed when using
1227 the tz database release 2013e or later, and affects a few unusual cases --
1228 currently only TZ='America/Godthab' for time stamps after 2037.
1230 * Added new API functions pthread_getattr_default_np and
1231 pthread_setattr_default_np to get and set the default pthread
1232 attributes of a process.
1234 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
1235 This may improve lock scaling of existing programs on TSX capable systems.
1236 When the --enable-lock-elision=yes parameter is specified at configure
1237 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
1240 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
1241 availability). Implemented by Ryan S. Arnold.
1243 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
1247 * The following bugs are resolved with this release:
1249 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
1250 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
1251 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
1252 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
1253 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
1254 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
1255 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
1256 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
1257 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
1258 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
1259 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
1260 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
1261 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
1262 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
1263 14879, 14889, 14893, 14898, 14914.
1265 * Optimization of memcpy for MIPS.
1267 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
1268 EMFILE has been fixed (Bugzilla #14889).
1270 * The add-on ports collection is now distributed in the "ports" subdirectory
1271 of the main GNU C Library distribution, rather than separately.
1273 * Port to ARM AArch64 contributed by Linaro.
1275 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
1276 Optimized versions of memcpy, memset, and memcmp added for System z10 and
1278 Implemented by Andreas Krebbel.
1280 * The new function secure_getenv allows secure access to the environment,
1281 returning NULL if running in a SUID/SGID process. This function replaces
1282 the internal function __secure_getenv.
1284 * SystemTap static probes have been added into the dynamic linker.
1285 Implemented by Gary Benson.
1287 * Optimizations of string functions strstr, strcasestr and memmem.
1288 Implemented by Maxim Kuvyrkov.
1290 * The minimum Linux kernel version that this version of the GNU C Library
1291 can be used with is 2.6.16.
1293 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
1294 powerpc POWER7. Implemented by Will Schmidt.
1296 * New configure option --disable-nscd builds the C library such that it
1297 never attempts to contact the Name Service Caching Daemon (nscd).
1298 New configure option --disable-build-nscd avoids building nscd itself;
1299 this is the default if --disable-nscd is used.
1301 * Improved support for cross-compilation, including cross-testing and
1302 bootstrap builds without a previously built glibc.
1304 * Several testsuite tests are now able to test multiple IFUNC variants of an
1305 interface, rather than just testing the one that would be chooen by
1308 * New configure options --with-bugurl and --with-pkgversion, for
1309 distributors to use to embed their bug-reporting and package version
1310 information in --help and --version output.
1312 * The ttyname and ttyname_r functions on Linux now fall back to searching for
1313 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
1314 allows creation of chroots without the procfs mounted on /proc.
1316 * The `crypt' function now fails if passed salt bytes that violate the
1317 specification for those values. On Linux, the `crypt' function will
1318 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
1319 enabled, and fail on encrypted strings using the MD5 or DES algorithm
1320 when the mode is enabled.
1322 * The `clock_*' suite of functions (declared in <time.h>) is now available
1323 directly in the main C library. Previously it was necessary to link with
1324 -lrt to use these functions. This change has the effect that a
1325 single-threaded program that uses a function such as `clock_gettime' (and
1326 is not linked with -lrt) will no longer implicitly load the pthreads
1327 library at runtime and so will not suffer the overheads associated with
1328 multi-thread support in other code such as the C++ runtime library.
1330 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
1335 * The following bugs are resolved with this release:
1337 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
1338 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
1339 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
1340 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
1341 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
1342 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
1343 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
1344 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
1345 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
1346 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
1347 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
1348 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
1349 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
1350 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
1351 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
1352 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
1353 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
1354 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
1355 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
1356 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
1357 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
1358 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
1361 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
1362 configuring glibc with:
1363 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
1364 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
1365 Implemented by H.J. Lu.
1369 + define static_assert
1371 + do not declare gets
1373 + declare at_quick_exit and quick_exit also for ISO C11
1375 + aligned_alloc. NB: The code is deliberately allows the size parameter
1376 to not be a multiple of the alignment. This is a moronic requirement
1377 in the standard but it is only a requirement on the caller, not the
1380 + timespec_get added
1382 + uchar.h support added
1384 + CMPLX, CMPLXF, CMPLXL added
1386 Implemented by Ulrich Drepper.
1388 * Support for the IA-64 has been moved to ports.
1390 * Remove support for anything but ELF binary format
1392 * Checking versions of poll, ppoll added.
1393 Implemented by Ulrich Drepper.
1395 * More generic and 64-bit performance optimizations to math functions.
1396 Implemented by Ulrich Drepper.
1398 * New configure option --enable-obsolete-rpc makes the deprecated RPC
1399 headers and functions available at compile time as they were before
1400 version 2.14. This option will be removed at some time in the future
1401 after the TI-RPC library becomes fully sufficient for the needs of
1402 existing applications.
1404 * Compatibility code for Linux kernel versions before 2.4 has been removed.
1405 Note that glibc is not expected to work with any Linux kernel version
1408 * New header <sys/auxv.h> and function getauxval allowing easy access to
1409 the AT_* key-value pairs passed from the Linux kernel. The header also
1410 defines the HWCAP_* bits associated with the AT_HWCAP key.
1412 * New locales: mag_IN
1414 * New configure option --enable-systemtap builds SystemTap static probes
1415 into libc for setjmp and longjmp and into libpthread for various operations.
1416 So far the setjmp/longjmp probes and some of the libpthread probes are
1417 provided only for i*86 and x86_64.
1418 Implemented by Roland McGrath and Rayson Ho.
1420 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
1422 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
1425 * More optimized functions for SPARC. Implemented by David S. Miller.
1427 * Improved support for cross-compilation, especially bootstrap builds
1428 without a previously built glibc.
1430 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
1431 Chris Metcalf from Tilera.
1433 * Support for the old ARM ABI has been removed from ports. Only the EABI is
1434 now supported for ARM processors.
1436 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
1437 as the name of the dynamic linker, to distinguish it from the
1438 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
1440 * Support for CRIS has been removed from ports.
1442 * A new class of installed header has been documented for low-level
1443 platform-specific functionality. PowerPC added the first instance with a
1444 function to provide time base register access. Contributed by Tulio
1445 Magno Quites Machado Filho.
1447 * ix86 configurations now install header files that are consistent with
1448 what x86-64 configurations install. These same header files can be used
1449 for -m32, -m64, or -mx32 builds.
1450 Contributed by H.J. Lu.
1452 * Math library bug fixes. A thorough audit of all open math library bugs was
1453 conducted by Joseph Myers. Significant progress was made on many math
1454 library bugs resulting in more accurate exceptions and function results.
1455 Many thanks to all those that contributed including Andreas Jaeger for his
1456 patch review and work on the x87 trigonometric instruction issues.
1458 * Timezone data is no longer installed. Timezone-related binaries and scripts
1459 will continue to be installed. Users should obtain their timezone data from
1460 their distribution provider or from the tzdata package at
1461 <ftp://munnari.oz.au/pub/>.
1465 * The following bugs are resolved with this release:
1467 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
1468 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
1469 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
1470 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
1471 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
1472 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
1473 13484, 13506, 13515, 13523, 13524, 13538, 13540
1475 * New program pldd to list loaded object of a process
1476 Implemented by Ulrich Drepper.
1478 * Add nss_db support back to glibc. No more dependency on Berkeley db
1479 and support for initgroups lookups.
1480 Implemented by Ulrich Drepper.
1482 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
1483 Contributed by HJ Lu.
1485 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
1486 Contributed by HJ Lu.
1488 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
1489 on x86-32 and x86-64.
1490 Contributed by Liubov Dmitrieva.
1492 * Optimized strchr and strrchr for SSE on x86-32.
1493 Contributed by Liubov Dmitrieva.
1495 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
1496 for x86-64 and x86-32.
1497 Contributed by Liubov Dmitrieva.
1499 * New interfaces: scandirat, scandirat64
1500 Implemented by Ulrich Drepper.
1502 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
1503 Implemented by Ulrich Drepper.
1505 * nscd now also caches the netgroup database.
1506 Implemented by Ulrich Drepper.
1508 * Integrate libm with gcc's -ffinite-math-only option.
1509 Implemented by Ulrich Drepper.
1511 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
1512 to math functions. Implemented by Ulrich Drepper.
1514 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
1515 Implemented by Ulrich Drepper.
1517 * New Linux interfaces: process_vm_readv, process_vm_writev
1519 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
1520 Implemented by Ulrich Drepper.
1522 * Optimized nearbyint and strcasecmp for PPC.
1523 Implemented by Adhemerval Zanella.
1525 * New locales: bho_IN, unm_US, es_CU, ta_LK
1529 * The following bugs are resolved with this release:
1531 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
1532 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
1533 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
1534 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
1535 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
1536 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
1537 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
1538 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
1539 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
1540 12795, 12811, 12813, 12814, 12841
1542 * The RPC implementation in libc is obsoleted. Old programs keep working
1543 but new programs cannot be linked with the routines in libc anymore.
1544 Programs in need of RPC functionality must be linked against TI-RPC.
1545 The TI-RPC implementation is IPv6 enabled and there are other benefits.
1547 Visible changes of this change include (obviously) the inability to link
1548 programs using RPC functions without referencing the TI-RPC library and the
1549 removal of the RPC headers from the glibc headers.
1550 Implemented by Ulrich Drepper.
1552 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
1553 syncfs, setns, sendmmsg
1555 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
1556 yue_HK, lij_IT, mhr_RU
1558 * New encodings: CP770, CP771, CP772, CP773, CP774
1560 * New program sotruss to trace calls through PLTs
1561 Implemented by Ulrich Drepper.
1563 * The malloc hook implementation is marked deprecated and will be removed
1564 from the default implementation in the next version. The design never
1565 worked ever since the introduction of threads. Even programs which do
1566 not create threads themselves can use multiple threads created internally.
1570 * The following bugs are resolved with this release:
1572 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
1573 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
1574 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
1575 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
1578 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
1580 * POWER7 optimizations: memset, memcmp, strncmp
1582 * New optimized string functions for x86-64: strnlen (SSE2),
1583 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
1584 Implemented by Ulrich Drepper.
1588 * The following bugs are resolved with this release:
1590 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
1591 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
1592 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
1593 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
1594 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
1595 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
1596 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
1597 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
1599 * New interfaces: pthread_getname_np, pthread_setname_np
1601 * New Linux interface: recvmmsg
1603 * STT_GNU_IFUNC implemented for Sparc by David Miller.
1605 * The dynamic linker now recognizes supported ABI versions from the
1606 EI_ABIVERSION field in the ELF header.
1607 Implemented by Ulrich Drepper.
1609 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
1610 will not be used to fill in password fields in the passwd.byname replies.
1611 Instead it is used to synthesize the shadow.byname table, should it be
1612 missing. This is a useful mode in some installations involving Solaris.
1613 Implemented by Ulrich Drepper.
1615 * New locales: kok_IN, sq_MK, cv_RU
1619 * The following bugs are resolved with this release:
1621 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
1622 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
1623 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
1624 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
1625 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
1626 10789, 10817, 10823, 10840, 10847
1628 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
1630 Implemented by Ulrich Drepper.
1632 * Checking version of longjmp added that fails if an uninitialized stack
1633 frame would be created. Implemented by Ulrich Drepper.
1635 * STT_GNU_IFUNC is now supported in static executables.
1636 Implemented by H.J. Lu.
1638 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
1640 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
1641 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
1642 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
1643 Contributed by H.J. Lu.
1645 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
1646 Implemented by Ulrich Drepper.
1648 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
1650 Contributed by H.J. Lu.
1652 * Support for fma instruction in AVX on x86-64.
1653 Implemented by H.J. Lu and Ulrich Drepper.
1655 * AVX support in x86-64 auditing support in ld.so.
1656 Implemented by H.J. Lu.
1658 * STB_GNU_UNIQUE support added.
1659 Implemented by Ulrich Drepper.
1661 * Implement second fallback mode for optimized DNS lookup for even more
1662 broken environments. If two requests from the same port are not
1663 handled correctly close the socket and open a new one before sending
1664 the second request. The 'single-request-reopen' option in /etc/resolv.conf
1665 can be used to select this mode right away, instead of rediscovering the
1666 necessity is every process again.
1667 Implemented by Ulrich Drepper.
1669 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
1670 Implemented by Adam Tkac.
1672 * Optimized iconv conversions for S390x.
1673 Implemented by Andreas Krebbel.
1675 * Using condvars with PI mutexes is now more efficient due to kernel
1676 support for requeueing to PI futexes. NPTL support added for x86-64.
1677 Implemented by Ulrich Drepper.
1679 * New locales: ps_AF, my_MM
1683 * The following bugs are resolved with this release:
1685 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
1686 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
1687 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
1688 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
1689 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
1691 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
1692 Implemented by Ulrich Drepper.
1694 * New Linux interfaces: accept4, fallocate, fallocate64.
1695 Implemented by Ulrich Drepper.
1697 * Correct declarations of string function when used in C++ code. This
1698 could lead to compile errors for invalid C++ code.
1700 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
1703 * New POSIX 2008 interface: psiginfo
1704 Implemented by Ulrich Drepper.
1706 * New ISO C++1x interfaces: quick_exit, at_quick_exit
1707 Implemented by Ulrich Drepper.
1709 * Support for selecting between multiple function definitions at runtime
1710 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
1712 * The libcrypt library can now use the hash function implementations in
1713 NSS. Implemented by Ulrich Drepper.
1715 * The malloc implementation can be compiled to be less memory efficient
1716 but higher performing in multi-threaded programs.
1717 Implemented by Ulrich Drepper.
1719 * New locales: nan_TW@latin, ks_IN
1721 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
1722 Implemented by Ulrich Drepper.
1724 * Extended printf hook support. It is possible to use user-defined types
1725 and extend existing format specifiers.
1726 Implemented by Ulrich Drepper.
1728 * Handling for group shadow files has been added.
1729 Implemented by Ulrich Drepper.
1731 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
1732 servers (the case, e.g., for some people using the built-in DNS
1733 server in ADSL modems/routers). There is a once-per-process timeout
1734 in case of a broken server. To avoid it, users can run nscd or put
1735 'options single-request' in /etc/resolv.conf.
1736 Implemented by Ulrich Drepper.
1740 * The following bugs are resolved with this release:
1742 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
1743 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
1744 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
1745 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
1746 6968, 6974, 6980, 6995, 7008, 7009, 7029
1748 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
1749 up at the same time. Implemented by Ulrich Drepper.
1751 * TLS descriptors for LD and GD on x86 and x86-64.
1752 Implemented by Alexandre Oliva.
1754 * getaddrinfo now handles DCCP and UDPlite.
1755 Implemented by Ulrich Drepper.
1757 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
1758 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
1759 Implemented by Ulrich Drepper.
1761 * New implementation of memmem, strstr, and strcasestr which is O(n).
1762 Implemented by Eric Blake.
1764 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
1766 * Implement "e" option for popen to open file descriptor with the
1767 close-on-exec flag set. Implemented by Ulrich Drepper.
1769 * Implement "b" mode for fmemopen. In this mode writes writes don't
1770 implicitly add a NUL byte and seeks from the end of the buffer really
1771 use the buffer end, not the string length as the basis.
1772 Implemented by Ulrich Drepper.
1774 * Many functions, exported and internal, now atomically set the close-on-exec
1775 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
1777 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
1779 Implemented by Pravin Satpute.
1781 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
1785 * The following bugs are resolved with this release:
1787 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
1788 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
1789 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
1790 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
1791 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
1792 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
1793 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
1795 * New locales: bo_CN, bo_IN, shs_CA.
1797 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
1799 * Sorting rules for some Indian languages (Devanagari and Gujarati).
1800 Implemented by Pravin Satpute.
1802 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
1804 * nscd caches now all timeouts for DNS entries
1805 Implemented by Ulrich Drepper.
1807 * nscd is more efficient and wakes up less often.
1808 Implemented by Ulrich Drepper.
1810 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
1811 vdprintf, and obstack_vprintf.
1812 Implemented by Jakub Jelinek.
1814 * Faster memset for x86-64.
1815 Implemented by Harsha Jagasia and H.J. Lu.
1817 * Faster memcpy on x86.
1818 Implemented by Ulrich Drepper.
1820 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
1821 Implemented by Ulrich Drepper.
1823 * Faster sqrt and sqrtf implemention for some PPC variants.
1824 Implemented by Steven Munroe.
1828 * The following bugs are resolved with this release:
1830 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
1831 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
1832 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
1833 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
1834 5071, 5103, 5104, 5112, 5113, 5184, 5186
1836 * More checking functions: fread, fread_unlocked, open*, mq_open.
1837 Implemented by Jakub Jelinek and Ulrich Drepper.
1839 * Extend fortification to C++. Implemented by Jakub Jelinek.
1841 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
1842 by not recognizing 'a' as a modifier when those specs are requested.
1843 Implemented by Jakub Jelinek.
1845 * PPC optimizations to math and string functions.
1846 Implemented by Steven Munroe.
1848 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
1849 options to be passed. Implemented by Ulrich Drepper.
1851 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
1853 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
1854 Implemented by Ulrich Drepper.
1856 * Handle private futexes in the NPTL implementation.
1857 Implemented by Jakub Jelinek and Ulrich Drepper.
1859 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
1860 Implemented by Roland McGrath and Ulrich Drepper.
1862 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
1864 * SHA-256 and SHA-512 based password encryption.
1865 Implemented by Ulrich Drepper.
1867 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1868 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1871 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1872 Implemented by Ulrich Drepper.
1876 * The following bugs are resolved with this release:
1878 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1879 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1880 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1881 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1882 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1883 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1884 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1887 * New Linux interfaces: epoll_pwait, sched_getcpu.
1889 * New generic interfaces: strerror_l.
1891 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1895 * The following bugs are resolved with this release:
1897 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1898 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1899 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1900 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1901 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1902 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1903 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1904 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1905 3225, 3251, 3252, 3253, 3273
1907 * For Linux, the sorting of addresses returned by getaddrinfo now also
1908 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1909 Implemented by Ulrich Drepper.
1911 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1912 Implemented by Ulrich Drepper.
1914 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1916 * New iconv module for MIK. Contributed by Alexander Shopov.
1918 * For sites with broken group and/or passwd database, the auto-propagate
1919 option of nscd can prevent creating ID lookup entries from the results
1920 of a name lookup and vice versa. This usually is no problem but some
1921 site might have problems with the default behavior.
1922 Implemented by Ulrich Drepper.
1924 * Iterating over entire database in NIS can be slow. With the
1925 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1926 to trade time for memory. The entire database will be read at once.
1927 Implemented by Ulrich Drepper.
1929 * The interfaces introduced in RFC 3542 have been implemented by
1932 * Support for the new ELF hash table format was added by Ulrich Drepper.
1934 * Support for priority inheritance mutexes added by Jakub Jelinek and
1937 * Support for priority protected mutexes added by Jakub Jelinek.
1939 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1940 or_IN, csb_PL, fy_NL, sr_ME.
1944 * More overflow detection functions.
1946 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1947 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1949 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1950 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1951 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1952 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1953 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1954 by Masahide Washizawa.
1956 * It is now possible to install audit libraries for the dynamic linker using
1957 LD_AUDIT. Implemented by Ulrich Drepper.
1959 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1960 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1961 For a libc and libpthread that works well on Linux 2.4 kernels, we
1962 recommend using the stable 2.3 branch.
1964 * The new function open_wmemstream acts like open_memstream,
1965 but uses a wchar_t wide character buffer.
1967 * The new function ppoll is an improved version of poll, similar to pselect.
1969 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1970 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1971 renameat, unlinkat, linkat, symlinkat, readlinkat.
1973 * New Linux kernel system calls: unshare,
1974 inotify_init, inotify_add_watch, inotify_rm_watch.
1976 * The euidaccess function is now also known by the alias eaccess,
1977 for compatibility with some other systems.
1979 * Timezone data updated to 2006b version.
1983 * The following bugs are resolved with this release:
1985 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1986 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1987 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1988 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1989 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1990 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1992 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1994 * As of this release, GCC 4 can be used to compile the C Library.
1996 * Timezone data updated to 2005m version.
2000 * The following bugs are resolved with this release:
2002 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
2003 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
2004 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
2005 777, 787, 821, 822, 823, 825
2007 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2011 * Support for RFC 3678. Real implementations exist only for Linux so far.
2012 Implemented by Ulrich Drepper.
2014 * nscd can now cache entries persistently. Expiring entries are reloaded.
2015 For speedups the cache can be shared in memory with client processes.
2016 Implemented by Ulrich Drepper.
2018 * nscd can now perform SELinux checks.
2019 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
2021 * getaddrinfo queries are now cached. Canonical name lookup is performed
2023 Implemented by Ulrich Drepper.
2025 * The nothrow function attribute is used when headers are used by gcc when
2026 compiling C code. This can avoid significant amounts of exception
2029 * The malloc functions perform more error checking and are stricter when
2030 it comes to reacting on errors. The default action is to terminate
2031 the process after showing an error message. Implemented by Ulrich Drepper.
2033 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
2034 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
2036 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
2037 namespaces using the new function dlmopen(). This feature is of course,
2038 like most other dynamic loading functionality, not available in statically
2039 linked applications. Implemented by Ulrich Drepper.
2041 * Low-overhead boundary checking variants of string and some stdio functions
2042 were added. These are to be used in conjunction with a gcc patch by
2043 Jakub Jelinek which adds calls to these functions if possible.
2044 Implemented by Jakub Jelinek and Ulrich Drepper.
2046 * Old code for several operating systems and machine architectures that
2047 have not been in working condition in a long time have been removed from
2048 the main source tree maintained by the GNU C Library's maintainers.
2049 These files are now reside in the separate `ports' source module
2050 that is usable as an add-on when building the library.
2054 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
2055 interrogate the dynamic linker, compatible with the Solaris interface.
2057 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
2058 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
2060 * getifaddrs now uses the netlink interface on Linux to get its information.
2061 Implemented by Thorsten Kukuk.
2063 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
2064 Implemented by Ulrich Drepper.
2066 * support for non-executable stacks on x86 has been added. Changes mostly
2069 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
2072 * getaddrinfo now performs destination address selection according to
2077 * Thread-safe interfaces for many functions that access locale data
2078 were added in version 2.3, but these features were omitted from NEWS.
2079 Many functions have variants with an `_l' suffix that take a `locale_t'
2080 object as a parameter rather than consulting the current locale.
2081 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
2082 create and maintain `locale_t' objects. Additionally, the new function
2083 `uselocale' sets "the current locale" (as used by functions not so
2084 parameterized) set for an individual thread. These features were added
2085 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
2087 * The functions getresuid, getresgid, setresuid, and setresgid, which
2088 have long been available on Linux, are now declared in <unistd.h>
2089 and are now also available on the Hurd.
2091 * ELF thread-local storage support (TLS) now works on x86-64.
2093 * The new dynamic string token $LIB is expanded in shared library names.
2094 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
2096 * Aldy Hernandez contributed complete software floating point support for
2097 PowerPC machines with no FPU.
2099 * fexecve is implemented on Linux.
2101 * The `btowc' function should work at least twice as fast due to
2102 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
2104 * With approriate thread add-ons cancelable functions are now implemented
2105 in libc.so as well. No need to call the function in libpthread. This
2106 change allowed to finally disable the incorrect and expensive handling
2107 of weak definition in ld.so.
2109 * Yet more PLT entries in libc.so have been removed. We finally arrived
2110 at the bare minimum. Startup times improved appropriately.
2112 * Support for the new Linux/x86 system call interface was added. The
2113 AT_SYSINFO auxiliary vector entry is recognized and handled.
2117 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
2120 * iconv (the program and the interface) now accepts empty names (excluding
2121 options like //TRANSLIT) to mean "use charset of current locale".
2123 * localedef can now transliterate characters in strings which are not in
2124 the provided charmap. The information from the input locale is used.
2126 * Prelinking support was added for ELF targets. This requires additional
2127 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
2129 * Read-only stdio streams now use mmap to speed up operation by eliminating
2130 copying and buffer underflows. To use add 'm' to the mode string of
2131 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
2133 * The malloc functions were completely rewritten by Wolfram Gloger based
2134 on Doug Lea's malloc-2.7.0.c.
2136 * Isamu Hasegawa contributed a completely new and POSIX-conformant
2137 implementation of regex.
2139 * Bruno Haible upgraded the iconv and locale implementation to support
2142 * Contents of the LC_* and LANG environment variables in the CEN style are
2143 not recognized anymore. It never was used. Change by Ulrich Drepper.
2145 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
2146 thread-local storage (TLS) ABI on some platforms.
2147 Changes by Ulrich Drepper. SH support by Kaz Kojima.
2149 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
2150 EUC-JISX0213, and TSCII.
2152 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
2153 BSD-compatible interface for getting all network interface addresses.
2154 Implementation for IPv4 by Roland McGrath.
2156 * Loading of locale data is faster due to the introduction of a locale
2157 archive. Implemented by Roland McGrath and Ulrich Drepper.
2159 * Startup times are significantly reduced by not using exported functions
2160 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
2163 * Steven Munroe contributed a port to PowerPC64/Linux.
2167 * The Hurd now uses the GNU libio implementation of stdio rather than the
2168 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
2170 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
2171 with the same behavior as the Linux system call of the same name.
2175 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
2176 128-bit long double format.
2178 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
2179 IBM1161, and IBM1162 charsets.
2181 * Andreas Jaeger contributed a port to x86-64/Linux.
2183 * Peter Bruin contributed a port to PowerPC/Hurd.
2185 * libc functions using I/O streams now can handle wide-oriented streams
2188 * optimizations in the dynamic linker. Binaries created by recent binutils
2189 versions start up quicker due to reduced time spent on relocations.
2191 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
2195 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
2196 asinh, atanh, j0 for the 128-bit long double format.
2198 * Bruno Haible updated all the code handling Unicode in some form to
2199 support Unicode 3.1.
2201 * Speed of regex for single-byte locales is back to previous levels.
2202 Patch by Isamu Hasegawa.
2204 * Alpha, SPARC, and IA-64 now also using floating stacks.
2206 * Startup time of internationalized applications greatly improved through
2207 iconv cache. Use iconvconfig to generate the cache file.
2208 Contributed by Ulrich Drepper.
2210 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
2211 severe performance problems. Patch by David Mosberger.
2213 * The Hurd port got a lot more functionality like AIO, various stdio
2214 extensions, etc. Mainly done by Roland McGrath.
2216 * mtrace can now lookup symbols in shared libraries.
2220 * Intel's IA-64 math library is largely integrated. It provides fast and
2221 accurate implementatations for most basic and standard math functions
2222 in float, double, and long double format.
2224 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
2225 and asin for the 96-bit long double format and asin, log, tan for the
2226 128-bit long double format.
2228 * The beginning of a last-bit accurate math library by IBM Haifa were added.
2229 The basic double functions exist today. Contributed by Abraham Ziv
2230 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
2231 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
2233 * An asynchronous name lookup library was added. The interface is designed
2234 after POSIX AIO. The proposal was circulated beforehand to get comments.
2235 No negative ones came in. Implemented by Ulrich Drepper.
2237 * Port to S390/64bit contributed by Martin Schwidefsky
2238 <schwidefsky@de.ibm.com>.
2240 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
2241 of functions for Linux/IA-64.
2243 * The RPC code is now thread safe. Threads can now use the same service
2244 of different services at the same time. Patch by Eric Norum
2245 <eric.norum@usask.ca> with some help by Ulrich Drepper.
2247 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
2248 family of functions for Linux/S390.
2250 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
2251 of functions for Linux/x86.
2253 * Port to Linux/CRIS contributed by Axis Communications.
2257 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
2258 we can now check for namespace violations and missing declarations. The
2259 result is that almost all headers are now Unix-compliant (as defined in
2260 the upcoming XPG6). The negative side is that some programs might need
2261 corrections, too, if they depend on the incorrect form of the headers in
2262 previous versions which defined too many symbols and included too many
2265 * regex now handles multibyte character sets correctly.
2266 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
2268 * iconv (the program) does now conform to the upcoming XPG6 and handles
2269 charmaps. Instead of the charset names the path of charmaps can be
2270 provided and the conversion happens based on this data.
2271 Contributed by Ulrich Drepper.
2273 * The locale program now provides detailed information about the installed
2278 only lists the names of the supported locales
2282 provides details such as country, language, and codeset name.
2283 Contributed by Ulrich Drepper.
2287 * The gencat program now parses the input file according to the charset
2288 selected by the LC_CTYPE category. This is important for stateful
2289 character sets. To make generating catalogs easier there is a way
2290 to overwrite the charset selected by the locale: before the first
2291 message or $ quote line the catalog can contain a line like
2293 $ codeset=ISO-8859-2
2295 to select the charset (ISO-8859-2 in this case).
2297 Implemented by Shinya Hanataka and Ulrich Drepper.
2299 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
2300 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
2301 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
2303 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
2304 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
2306 * The LANGUAGE environment variable is now ignored unless the locale is
2307 changed from the default "C" locale.
2309 * The usual bug fixes.
2313 * Greg McGary added runtime support for bounds checking using gcc's
2314 new -fbounded-pointers option. ix86 target is complete. PowerPC
2317 * Thorsten Kukuk added secure mode support to nscd.
2319 * The Berkeley db libraries have been removed.
2321 Related, the nss_db module is now in a separate package since it
2322 obviously requires a database library being available.
2324 * Wide character I/O streams implemented by Ulrich Drepper.
2326 * Functions from the extended socket API added by Ulrich Drepper.
2328 * Functions feenableexcept and fedisableexcept to control the
2329 behaviour of individual exceptions have been added by Andreas Jaeger.
2331 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
2333 * The resolver code has been updated from bind 8.2.3-T5B which supports
2334 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
2337 This change could in some situations effect backward compatibility. Since
2338 now `_res' is a thread-local instead of a global variable, modifying it
2339 in one thread does not have any effect in other threads.
2341 The resolver library was also extended to allow IPv6 as the transport
2342 protocol for the requests. This work was done by Stig Venaas.
2344 * Compatibility code for K&R C compilers has been removed from the
2345 header files. A ISO C compiler is needed to use the library
2346 (conforming to either C89 or C99 standard).
2348 * Complete rewrite of the localedef program to support multibyte character
2349 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
2350 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
2351 Implemented by Ulrich Drepper.
2353 Bruno Haible significantly improved the generation and use of the data
2354 structures for the wide character tables.
2356 * Plural handling in gettext implemented by Ulrich Drepper.
2358 * The utmp daemon has been removed.
2360 * The port to MIPS-Linux has been finished by Andreas Jaeger.
2362 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
2365 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
2367 * POSIX barriers implemented by Kaz Kylheku.
2369 * POSIX spawn function family implemented by Ulrich Drepper.
2371 * POSIX spinlocks are now available.
2373 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
2375 * the configure option --enable-kernel=X.Y.Z allows to strip out
2376 compatibility for kernel versions before X.Y.Z. This is currently only
2377 implemented for Linux.
2379 * the sockaddr_in6 structure changed. The IPv6 working group added a new
2380 field sin6_scope_id. This means that all programs using IPv6 should be
2381 recompiled. Don't expect binary compatibility with previous glibc
2384 * various conversion modules for IBM character sets contributed by
2387 * IA-64 port by Jes Sorensen and HJ Lu.
2401 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
2403 * New xdr functions are added; some rpc functions are now 64bit clean.
2405 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
2407 * Fixed known incompatibilities with glibc 2.0.
2409 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
2411 * Optimized a number of functions (especially the ELF dynamic loader).
2413 * Update timezone data files.
2415 * lots of charmaps corrections
2417 * some new locale definitions and charmaps
2422 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
2423 conform to POSIX member type requirements. Symbol versions have been
2424 adjusted as needed within the library, and for direct use by applications,
2425 but there is potential for problems if third-party libraries use
2426 struct timeval as part of their interface. This does not present
2427 a problem for X and other "essential" system libraries.
2429 * An additional locale model to support C++ Standard Library locale
2430 model and probably more was implemented by Ulrich Drepper.
2432 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
2435 * Miles Bader provided the `argp' function family to support hierachical
2436 command line argument parsing, layered on top of getopt.
2438 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
2440 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
2443 * scanf recognizes the %a and %A format for scanning floating point numbers.
2445 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
2446 information and interfaces for the available integer types.
2448 * about 130 new math functions were added to implement the ISO C9x math
2451 * the new header <complex.h> contains definitions of the complex math
2452 functions from ISO C 9X.
2454 * the new header <tgmath.h> defines generic macros to use complex or
2455 real valued functions.
2457 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
2459 * Andreas Jaeger provided a test suite for the math library.
2461 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
2463 * Ulrich Drepper added character set conversion functions (iconv).
2465 * Optimized string functions have been added.
2467 * The localedata addon is now part of glibc.
2469 * An implementation of profiling shared libraries was added by Ulrich Drepper.
2471 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
2472 daemon for NSS (nscd).
2474 Missing a better place here are some numbers on improvements. Under
2475 Linux 2.1.125 un-tar-ing the kernel sources takes
2479 using local files 12.19s 6.88s 22.91s
2481 using NIS 13.92s 8.91s 26.34s
2483 using NIS & nscd 10.37s 7.34s 25.30s
2485 using NIS+ 27.57s 30.37s 640.46s
2487 using NIS+ & nscd 10.25s 7.83s 26.51s
2489 using NIS & old nscd [1] 13.83s 8.32s 29.60s
2491 Keep in mind that non-namelookup related operations dominate above times.
2492 It was just a common complain that using NIS+ unpacking the kernel is
2495 [1] The old nscd implementation is not available anymore since it was
2496 distributed with glibc up to version 2.0.98 and thus is now replaced.
2498 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
2500 * Mark Kettenis provided a Hesiod NSS module.
2502 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
2503 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
2505 * rcmd can now handle netgroups (Dick Streefland).
2507 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
2510 * Support for the IPv6 protocol has been added to the socket API, as per the
2511 latest draft standards.
2513 * Support for Linux 2.2 has been added.
2515 * Interface changes relative to the latest 2.0.x release:
2516 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2517 addseverity NEW: Unix98
2518 alphasort64 NEW: LFS
2519 argp_err_exit_status NEW: argp, GNU ext
2520 argp_error NEW: argp, GNU ext
2521 argp_failure NEW: argp, GNU ext
2522 argp_help NEW: argp, GNU ext
2523 argp_parse NEW: argp, GNU ext
2524 argp_program_bug_address NEW: argp, GNU ext
2525 argp_program_version NEW: argp, GNU ext
2526 argp_program_version_hook NEW: argp, GNU ext
2527 argp_state_help NEW: argp, GNU ext
2528 argp_usage NEW: argp, GNU ext
2529 authdes_create NEW: Secure RPC
2530 authdes_getucred NEW: Secure RPC
2531 authdes_pk_create NEW: Secure RPC
2532 backtrace NEW: GNU ext.
2533 backtrace_symbols NEW: GNU ext.
2534 backtrace_symbols_fd NEW: GNU ext.
2536 cacosf NEW: ISO C 9x
2537 cacosh NEW: ISO C 9x
2538 cacoshf NEW: ISO C 9x
2539 cacoshl NEW: ISO C 9x
2540 cacosl NEW: ISO C 9x
2547 casinf NEW: ISO C 9x
2548 casinh NEW: ISO C 9x
2549 casinhf NEW: ISO C 9x
2550 casinhl NEW: ISO C 9x
2551 casinl NEW: ISO C 9x
2553 catanf NEW: ISO C 9x
2554 catanh NEW: ISO C 9x
2555 catanhf NEW: ISO C 9x
2556 catanhl NEW: ISO C 9x
2557 catanl NEW: ISO C 9x
2558 cbc_crypt NEW: Secure RPC
2562 ccoshf NEW: ISO C 9x
2563 ccoshl NEW: ISO C 9x
2569 cimagf NEW: ISO C 9x
2570 cimagl NEW: ISO C 9x
2571 clearerr_locked REMOVED
2572 clntunix_create NEW: sunrpc ext
2574 clog10 NEW: ISO C 9x
2575 clog10f NEW: ISO C 9x
2576 clog10l NEW: ISO C 9x
2586 cprojf NEW: ISO C 9x
2587 cprojl NEW: ISO C 9x
2589 crealf NEW: ISO C 9x
2590 creall NEW: ISO C 9x
2595 csinhf NEW: ISO C 9x
2596 csinhl NEW: ISO C 9x
2599 csqrtf NEW: ISO C 9x
2600 csqrtl NEW: ISO C 9x
2604 ctanhf NEW: ISO C 9x
2605 ctanhl NEW: ISO C 9x
2607 des_setparity NEW: Secure RPC
2608 ecb_crypt NEW: Secure RPC
2609 endutxent NEW: Unix98
2611 exp10f NEW: ISO C 9x
2612 exp10l NEW: ISO C 9x
2616 fattach NEW: STREAMS
2617 fdetach NEW: STREAMS
2621 feclearexcept NEW: ISO C 9x
2622 fegetenv NEW: ISO C 9x
2623 fegetexceptflag NEW: ISO C 9x
2624 fegetround NEW: ISO C 9x
2625 feholdexcept NEW: ISO C 9x
2627 feraiseexcept NEW: ISO C 9x
2628 ferror_locked REMOVED
2629 fesetenv NEW: ISO C 9x
2630 fesetexceptflag NEW: ISO C 9x
2631 fesetround NEW: ISO C 9x
2632 fetestexcept NEW: ISO C 9x
2633 feupdateenv NEW: ISO C 9x
2634 fflush_locked REMOVED
2638 fgets_unlocked NEW: GNU ext.
2639 fileno_locked REMOVED
2651 fputc_locked REMOVED
2652 fputs_unlocked NEW: GNU ext.
2653 fread_unlocked NEW: GNU ext.
2658 fstatvfs NEW: Unix98
2662 ftruncate64 NEW: LFS
2664 fwrite_unlocked NEW: GNU ext.
2665 gai_strerror NEW: IPv6
2669 getchar_locked REMOVED
2671 getdate_err NEW: Unix98
2672 getdate_r NEW: GNU ext.
2674 getnameinfo NEW: IPv6
2675 getnetname NEW: Secure RPC
2676 getpmsg NEW: STREAMS
2677 getpt NEW: Unix98 PTY
2678 getrlimit64 NEW: LFS
2679 getutxent NEW: Unix98
2680 getutxid NEW: Unix98
2681 getutxline NEW: Unix98
2682 glob64 NEW: GNU ext.
2683 globfree64 NEW: GNU ext.
2684 gnu_get_libc_release NEW: GNU ext.
2685 gnu_get_libc_version NEW: GNU ext.
2686 grantpt NEW: Unix98 PTY
2687 host2netname NEW: Secure RPC
2689 iconv_close NEW: iconv
2690 iconv_open NEW: iconv
2691 if_freenameindex NEW: IPv6
2692 if_indextoname NEW: IPv6
2693 if_nameindex NEW: IPv6
2694 if_nametoindex NEW: IPv6
2695 in6addr_any NEW: IPv6
2696 in6addr_loopback NEW: IPv6
2697 inet6_isipv4mapped NEW: IPv6
2698 isastream NEW: STREAMS
2699 iswblank NEW: GNU ext.
2700 key_decryptsession NEW: Secure RPC
2701 key_decryptsession_pk NEW: Secure RPC
2702 key_encryptsession NEW: Secure RPC
2703 key_encryptsession_pk NEW: Secure RPC
2704 key_gendes NEW: Secure RPC
2705 key_get_conv NEW: Secure RPC
2706 key_secretkey_is_set NEW: Secure RPC
2707 key_setnet NEW: Secure RPC
2708 key_setsecret NEW: Secure RPC
2709 llrint NEW: ISO C 9x
2710 llrintf NEW: ISO C 9x
2711 llrintl NEW: ISO C 9x
2712 llround NEW: ISO C 9x
2713 llroundf NEW: ISO C 9x
2714 llroundl NEW: ISO C 9x
2719 lrintf NEW: ISO C 9x
2720 lrintl NEW: ISO C 9x
2721 lround NEW: ISO C 9x
2722 lroundf NEW: ISO C 9x
2723 lroundl NEW: ISO C 9x
2725 makecontext NEW: Unix98
2726 mempcpy NEW: GNU ext.
2729 modify_ldt NEW: kernel
2733 nearbyint NEW: ISO C 9x
2734 nearbyintf NEW: ISO C 9x
2735 nearbyintl NEW: ISO C 9x
2736 netname2host NEW: Secure RPC
2737 netname2user NEW: Secure RPC
2738 nexttoward NEW: ISO C 9x
2739 nexttowardf NEW: ISO C 9x
2740 nexttowardl NEW: ISO C 9x
2744 passwd2des NEW: Secure RPC
2746 pow10f NEW: GNU ext.
2747 pow10l NEW: GNU ext.
2750 printf_size NEW: GNU ext.
2751 printf_size_info NEW: GNU ext.
2752 profil_counter REMOVED
2753 pthread_mutexattr_getkind_np REPLACED
2754 pthread_mutexattr_setkind_np REPLACED
2755 ptsname NEW: Unix98 PTY
2756 ptsname_r NEW: Unix98 PTY
2758 putchar_locked REMOVED
2759 putgrent NEW: GNU ext.
2761 putpmsg NEW: STREAMS
2762 pututxline NEW: Unix98
2766 readdir64_r NEW: LFS
2767 remquo NEW: ISO C 9x
2768 remquof NEW: ISO C 9x
2769 remquol NEW: ISO C 9x
2771 roundf NEW: ISO C 9x
2772 roundl NEW: ISO C 9x
2774 scalbln NEW: ISO C 9x
2775 scalblnf NEW: ISO C 9x
2776 scalblnl NEW: ISO C 9x
2778 sendfile NEW: kernel
2779 setcontext NEW: Unix98
2780 setrlimit64 NEW: LFS
2781 setutxent NEW: Unix98
2783 sigignore NEW: Unix98
2784 sigqueue NEW: POSIX.1b
2785 sigrelse NEW: Unix98
2786 sigset NEW: POSIX.1b
2787 sigtimedwait NEW: POSIX.1b
2788 sigwaitinfo NEW: POSIX.1b
2789 sincos NEW: GNU ext.
2790 sincosf NEW: GNU ext.
2791 sincosl NEW: GNU ext.
2795 strcasestr NEW: GNU ext.
2796 strtoimax NEW: ISO C 9x
2797 strtoumax NEW: ISO C 9x
2798 strverscmp NEW: GNU ext.
2799 svcauthdes_stats NEW: Secure RPC
2800 svcunix_create NEW: sunrpc etx
2801 svcunixfd_create NEW: sunrpc ext
2802 swapcontext NEW: Unix98
2803 tcgetsid NEW: Unix98 PTY
2804 tdestroy NEW: GNU ext.
2805 tgamma NEW: ISO C 9x
2806 tgammaf NEW: ISO C 9x
2807 tgammal NEW: ISO C 9x
2811 truncf NEW: ISO C 9x
2812 truncl NEW: ISO C 9x
2814 unlockpt NEW: Unix98 PTY
2815 updwtmpx NEW: Unix98
2816 user2netname NEW: Secure RPC
2817 utmpxname NEW: Unix98
2818 versionsort NEW: GNU ext.
2819 versionsort64 NEW: GNU ext.
2821 wcscasecmp NEW: GNU ext.
2822 wcsncasecmp NEW: GNU ext.
2823 wcsnlen NEW: GNU ext.
2824 wcstoimax NEW: ISO C 9x
2825 wcstoll NEW: ISO C 9x
2826 wcstoull NEW: ISO C 9x
2827 wcstoumax NEW: ISO C 9x
2829 wordexp NEW: POSIX.2
2830 wordfree NEW: POSIX.2
2831 write_profiling REMOVED
2832 xdecrypt NEW: Secure RPC
2833 xdr_authdes_cred NEW: Secure RPC
2834 xdr_authdes_verf NEW: Secure RPC
2835 xdr_cryptkeyarg NEW: Secure RPC
2836 xdr_cryptkeyarg2 NEW: Secure RPC
2837 xdr_cryptkeyres NEW: Secure RPC
2838 xdr_getcredres NEW: Secure RPC
2839 xdr_key_netstarg NEW: Secure RPC
2840 xdr_key_netstres NEW: Secure RPC
2841 xdr_keybuf NEW: Secure RPC
2842 xdr_keystatus NEW: Secure RPC
2843 xdr_netnamestr NEW: Secure RPC
2844 xdr_sizeof NEW: Secure RPC
2845 xdr_unixcred NEW: sunrpc ext
2846 xencrypt NEW: Secure RPC
2847 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2858 * inet_ntoa is thread-safe
2860 * updwtmp is moved from libutil to libc
2862 * rewrite of cbrt function
2864 * update of timezone data
2878 * add atoll function
2880 * fix complex problems in Berkeley DB code
2882 * fix math functions
2886 * fixed lots of header problems (especially Linux/GNU specific)
2888 * dynamic loader preserves all registers
2890 * Roland McGrath provided support for handling of auxiliary objects in
2891 the ELF dynamic loader.
2893 * support for parallel builds is improved
2897 * GNU extensions are no longer declared by default. To enable them you
2898 must define the macro `_GNU_SOURCE' in your program or compile with
2901 * The library has changed from using GNU ld symbol aliases to using weak
2902 symbols where available. The ELF object file format supports weak
2903 symbols; GNU ld also supports weak symbols in the a.out format. (There
2904 is also now support for other GNU ld extensions in ELF. Use the
2905 `--with-elf' option to configure to indicate you have ELF, and
2906 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2907 of many files which contained only symbol aliases, reducing the size of
2908 the source and the compiled library; many other files were renamed to
2909 less cryptic names previously occupied by the symbol alias files.
2910 There is a new header file <elf.h> for programs which operate on
2911 files in the ELF format.
2913 * Converted to Autoconf version 2, so `configure' has more options.
2914 Run `configure --help' to see the details.
2916 * The library can now be configured to build profiling, highly-optimized
2917 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2918 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2919 `configure' enable building these extra libraries. The shared library is
2920 built by default when using both ELF and GNU ld. When shared libraries
2921 are enabled, the new library `-ldl' is available for arbitrary run-time
2922 loading of shared objects; its interface is defined in <dlfcn.h>. The
2923 new header file <link.h> gives access to the internals of the run-time
2924 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2925 application of same name on other systems and it provides information
2926 about dynamically linked binaries.
2928 * The C library now provides the run-time support code for profiling
2929 executables compiled with `-pg'. Programs can control the profiling code
2930 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2931 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2932 the support for this file format was contributed by David Mosberger-Tang.
2934 * The math code has been replaced with a math library based on fdlibm from
2935 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2936 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2937 functions. The math functions now reside in a separate library, so
2938 programs using them will need to use `-lm' their linking commands.
2940 * John C. Bowman contributed optimized ix87 assembler inline functions.
2942 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2943 mechanism similar to that found in Solaris 2. This is now used for the
2944 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2945 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2946 file controls what services are used for each individual database. This
2947 works by loading shared libraries with names specified in `nsswitch.conf',
2948 so service modules can be changed or added at any time without even
2949 relinking any program. Currently there are the file, db, and NIS based
2950 NSS services available.
2952 * The new functions `strtoq' and `strtouq' parse integer values from
2953 strings, like `strtol' and `strtoul', but they return `long long int' and
2954 `unsigned long long int' values, respectively (64-bit quantities).
2956 * The new functions `strtof' and `strtold' parse floating-point values from
2957 strings, like `strtod', but they return `float' and `long double' values,
2958 respectively (on some machines `double' and `long double' are the same).
2960 * Ulrich Drepper has contributed new implementations of the floating-point
2961 printing and reading code used in the `printf' family of functions and
2962 `strtod', `strtof', and `strtold'. These new functions are perfectly
2963 accurate, and much faster than the old ones.
2965 * The implementation of the POSIX locale model was completely rewritten by
2966 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2967 to compile the POSIX locale definition.
2969 * The former dummy implementations of the strcoll and strxfrm function are
2970 now replaced by fully functional code contributed by Ulrich Drepper. The
2971 collation information comes from the POSIX locale definitions.
2973 * The new header <langinfo.h> defines an interface for accessing
2974 various locale-dependent data (using the locale chosen with `setlocale').
2976 * Ulrich Drepper has contributed a new suite of functions for operation on
2977 wide-character and multibyte-character strings, in <wchar.h>;
2978 and classification and case conversion of wide characters, in <wctype.h>.
2979 These new functions are conforming to the ISO C, Amendement 1 specification.
2981 * There is now a second implementation of the standard I/O library available.
2982 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2983 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2985 * You can now use positional parameter specifications in format strings
2986 for the `printf' and `scanf' families of functions. For example,
2987 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2988 ``Number 6, Mr Jones''. This is mainly useful when providing different
2989 format strings for different languages, whose grammars may dictate
2990 different orderings of the values being printed. To support this
2991 feature, the interface for `register_printf_handler' has changed; see
2992 the header file <printf.h> for details.
2994 * The `printf' and `scanf' families of functions now understand a new
2995 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2996 to group numbers as indicated by the locale; for `scanf' and friends, this
2997 says to accept as valid only a number with all the proper grouping
2998 separators in the right places. In the default "C" locale, numbers are
2999 not grouped; but locales for specific countries will define the usual
3000 conventions (i.e. separate thousands with `,' in the US locale).
3002 * The pgrp functions have been regularized, slightly incompatibly but much
3003 less confusingly. The core functions are now `getpgid' and `setpgid',
3004 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
3005 argument) and BSD `setpgrp' (identical to `setpgid') functions are
3006 provided for compatibility. There is no longer an incompatible `getpgrp'
3007 with an argument declared under _BSD_SOURCE; no BSD code uses it.
3009 * The new header file <fts.h> and suite of functions simplify programs that
3010 operate on directory trees. This code comes from 4.4 BSD.
3012 * The resolver code has been updated from the BIND 4.9.5-P1 release.
3013 Parts of the code were heavily modified by Ulrich Drepper to fit in the
3014 NSS scheme used in glibc.
3016 * There is a new malloc debugging hook `__memalign_hook'.
3018 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
3019 `unsigned int' in <sys/types.h>. These are for compatibility only and
3020 their use is discouraged.
3022 * The `-lmcheck' library to enable standard malloc debugging hooks is now
3023 done differently, so that it works even without GNU ld.
3025 * New function `euidaccess' checks allowed access to a file like `access',
3026 but using the effective IDs instead of the real IDs.
3028 * The time zone data files have been updated for the latest and greatest
3029 local time conventions of the countries of the world.
3031 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
3034 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
3035 for formatting floating-point numbers. They are provided only for
3036 compatibility; new programs should use `sprintf' instead. There are
3037 also equivalent function for the `long double' floating-point type and
3038 all functions also exist in a reentrant form.
3040 * The new auxiliary library `-lutil' from 4.4 BSD contains various
3041 functions for maintaining the login-record files (primarily of use to
3042 system programs such as `login'), and convenient functions for
3043 allocating and initializing a pseudo-terminal (pty) device.
3045 * Ulrich Drepper has contributed new support for System V style
3046 shared memory and IPC on systems that support it.
3048 * Ulrich Drepper has contributed several miscellaneous new functions found
3049 in System V: The `hsearch' family of functions provide an effective
3050 implementation of hash tables; `a64l' and `l64a' provide a very simple
3051 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
3054 * Ulrich Drepper has contributed new reentrant counterparts for the
3055 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
3057 * Ulrich Drepper has contributed new, highly-optimized versions of several
3058 string functions for the i486/Pentium family of processors.
3060 * Ulrich Drepper has updated the Linux-specific code, based largely
3061 on work done in Hongjiu Lu's version of GNU libc for Linux.
3062 The GNU library now supports Linux versions 2.0.10 and later,
3063 using the ELF object file format (i[3456]86-*-linux).
3065 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
3067 * David Mosberger-Tang and Richard Henderson have ported the C library
3068 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
3069 dynamic linking support for ELF/Alpha.
3071 * Richard Henderson contributed several Alpha optimized assembler function
3072 for arithmetic and string handling.
3074 * Ulrich Drepper has contributed a new set of message catalog functions to
3075 support multiple languages using the <libintl.h> interface, for use with
3076 his new package GNU gettext. Translation volunteers have contributed
3077 catalogs of the library's messages in Spanish, German, and Korean.
3079 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
3080 program and the `catgets' function for reading the catalog files it
3081 creates. (The <libintl.h> interface is preferred; we include the
3082 <nl_types.h> interface using `catgets' only for source compatibility with
3083 programs already written to use it.)
3085 * New header file <values.h> gives SVID-compatible names for <limits.h>
3088 * Various new macros, declarations, and small header files for compatibility
3091 * New function `group_member' is a convenient way to check if a process has
3092 a given effective group ID.
3094 * When using GCC 2.7 and later, the socket functions are now declared in a
3095 special way so that passing an argument of type `struct sockaddr_in *',
3096 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
3097 `struct sockaddr *' type, does not generate a type-clash warning.
3099 * New function `error' declared in header file <error.h> is a convenient
3100 function for printing error messages and optionally exiting; this is the
3101 canonical function used in GNU programs. The new functions `err', `warn',
3102 and friends in header file <err.h> are the canonical 4.4 BSD interface for
3103 doing the same thing.
3105 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
3106 POSIX.2 `glob' function to do ~ and {...} expansion.
3108 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
3109 `clearenv' which is used in POSIX.9 is also available.
3111 * New function `getsid' returns session ID number on systems that support it.
3113 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
3114 files <db.h> and <mpool.h> provide a rich set of functions for several
3115 types of simple databases stored in memory and in files, and <ndbm.h> is
3116 an old `ndbm'-compatible interface using the `db' functions. Link with
3117 `-ldb' to get these functions.
3119 * New macro `strdupa' copies a string like `strdup', but uses local stack
3120 space from `alloca' instead of dynamic heap space from `malloc'.
3122 * New function `strnlen' is like `strlen' but searches only a given maximum
3123 number of characters for the null terminator. `stpncpy', `strndup' and
3124 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
3127 * New function `statfs' in header <sys/statfs.h>.
3129 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
3130 provide convenient functions for operating on blocks of null-terminated
3133 * A new suite of functions in <utmp.h> handle all the details of reading
3134 and writing the utmp file.
3136 * An implementation of the NIS/YP(tm) based NSS service was contributed by
3139 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
3140 completely POSIX compliant and also implemented the extended functionality
3141 to handle alternate digit representation and alternate era date formats.
3143 * Ulrich Drepper provided an implementation of the `strptime' function
3144 defined in XPG4.2 which transforms a string into a `struct tm' value.
3146 * Paul Eggert provided the tzselect shell script as part of the timezone
3147 code. The shell script makes it easy to select the correct timezone
3150 * The implementation of the malloc family of functions is completely replaced
3151 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
3152 The implementation uses the mmap function (if available) and it is
3153 optimized for the use in multi threaded programs.
3155 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
3156 functions. This new functionality is usable by specifying a special
3157 salt string and it is compatible with implementation on *BSD systems.
3159 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
3160 `getsubopt' to handle second level command line options, `bsd_signal'
3161 to access BSD style `signal' functionality, the obsolete `regexp' style
3164 * the `lchown' function is available on system which support this
3167 * The implementation of the shadow password handling function was contributed
3170 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
3172 * POSIX.1g support was added. The <sys/select.h> header is available,
3173 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
3174 implementation of `getaddrinfo'.
3178 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
3180 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
3181 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
3183 * The new function `daemon' from 4.4 BSD is useful for server programs that
3184 want to put themselves in the background.
3186 * Joel Sherrill has contributed support for several standalone boards that
3187 run without an operating system.
3189 * `printf', `scanf' and friends now accept a `q' type modifier for long
3190 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
3192 * All of the code taken from BSD (notably most of the math and networking
3193 routines) has been updated from the BSD 4.4-Lite release.
3195 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
3197 * The new functions `getdomainname' and `setdomainname' fetch or change the
3198 YP/NIS domain name. These are system calls which exist on systems which
3201 * The time zone data files have been updated for the latest international
3204 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
3205 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
3209 * The C library now includes support for Sun RPC, from Sun's free
3210 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
3211 are included. (There is still no support for YP.)
3213 * Tom Quinn has contributed a port of the C library to SGI machines running
3214 Irix 4 (mips-sgi-irix4).
3216 * The new `lockf' function is a simplified interface to the locking
3217 facilities of `fcntl', included for compatibility.
3219 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
3221 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
3223 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
3226 * The error message printed by `assert' for a failed assertion now includes
3227 the name of the program (if using GNU ld) and the name of the calling
3228 function (with versions of GCC that support this).
3230 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
3232 * The library now includes the <sys/mman.h> header file and memory
3233 management functions `mmap', `munmap', `mprotect', `msync', and
3234 `madvise', on systems that support those facilities.
3236 * The interface for `mcheck' has changed slightly: the function called to
3237 abort the program when an allocation inconsistency is detected now takes
3238 an argument that indicates the type of failure. The new function
3239 `mprobe' lets you request a consistency check for a particular block at
3240 any time (checks are normally done only when you call `free' or `realloc'
3243 * It is now possible to easily cross-compile the C library, building on one
3244 system a library to run on another machine and/or operating system. All
3245 you need to do is set the variable `HOST_CC' in `configparms' to the
3246 native compiler for programs to run on the machine you are building on (a
3247 few generator programs are used on Unix systems); set `CC' to the
3250 * The new function `fexecve' (only implemented on the GNU system) executes
3251 a program file given a file descriptor already open on the file.
3255 * Brendan Kehoe has contributed most of a port to the DEC Alpha
3256 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
3258 * You can set the variable `libprefix' in `configparms' to specify a prefix
3259 to be prepended to installed library files; this makes it easy to install
3260 the GNU C library to be linked as `-lgnuc' or whatever.
3262 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
3263 copies a limited number of characters from a string, and returns the
3264 address of the last character written.
3266 * You no longer need to check for whether the installed `stddef.h' is
3267 compatible with the GNU C library. configure now checks for you.
3269 * You can now define a per-stream `fileno' function to convert the
3270 stream's cookie into an integral file descriptor.
3272 * ``malloc (0)'' no longer returns a null pointer. Instead, it
3273 allocates zero bytes of storage, and returns a unique pointer which
3274 you can pass to `realloc' or `free'. The behavior is undefined if
3275 you dereference this pointer.
3277 * The C library now runs on Sony NEWS m68k machines running either
3278 NewsOS 3 or NewsOS 4.
3280 * The new `syscall' function is a system-dependent primitive function
3281 for invoking system calls. It has the canonical behavior on Unix
3282 systems, including unreliable return values for some calls (such as
3283 `pipe', `fork' and `getppid').
3285 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
3286 to `EAGAIN', which is the preferred name. On systems whose kernels
3287 use two distinct codes, the C library now translates EWOULDBLOCK to
3288 EAGAIN in every system call function.
3292 * The GNU C Library Reference Manual is now distributed with the library.
3293 `make dvi' will produce a DVI file of the printed manual.
3294 `make info' will produce Info files that you can read on line using C-h i
3295 in Emacs or the `info' program.
3296 Please send comments on the manual to bug-glibc-manual@gnu.org.
3298 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
3300 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
3302 * Jason Merrill has contributed a port to the Sequent Symmetry running
3303 Dynix version 3 (i386-sequent-dynix).
3305 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
3306 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
3308 * New function `memory_warnings' lets you arrange to get warnings when
3309 malloc is running out of memory to allocate, like Emacs gives you.
3311 * The C library now contains the relocating allocator used in Emacs 19 for
3312 its editing buffers. This allocator (ralloc) minimizes allocation
3313 overhead and fragmentation by moving allocated regions around whenever it
3314 needs to. You always refer to a ralloc'd region with a "handle" (a
3315 pointer to a pointer--an object of type `void **').
3317 * There is a new `printf' format: `%m' gives you the string corresponding
3318 to the error code in `errno'.
3320 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
3321 or `%[' conversion, but instead of filling in a fixed-sized buffer you
3322 pass, the `a' modifier says to fill in a `char **' you pass with a
3325 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
3326 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
3327 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
3329 * `mkstemp' is a traditional Unix function to atomically create and open a
3330 uniquely-named temporary file.
3334 * The standard location for the file that says what the local timezone is
3335 has changed again. It is now `/usr/local/etc/localtime' (or more
3336 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
3338 * The distribution no longer contains any files with names longer than 14
3341 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
3342 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
3344 * New functions `ttyslot' and `syslog' from 4.4 BSD.
3348 * The configuration process has changed quite a bit. The `configure'
3349 script is now used just like the configuration scripts for other GNU
3350 packages. The `sysdeps' directory hierarchy is much rearranged.
3351 The file `INSTALL' explains the new scheme in detail.
3353 * The header files no longer need to be processed into ANSI C and
3354 traditional C versions. There is just one set of files to install, and
3355 it will work with ANSI or old C compilers (including `gcc -traditional').
3357 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
3358 MIPS DECStation running Ultrix 4.
3360 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
3361 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
3362 made itself into a shared library.
3364 * Yet further improved support for the i386, running 4.3 BSD-like systems
3365 (such as Mach 3 with the Unix single-server), or System V.
3367 * New function `strncasecmp' to do case-insensitive string comparison
3368 with limited length.
3370 * New function `strsep' is a reentrant alternative to `strtok'.
3372 * New functions `scandir' and `alphasort' for searching directories.
3374 * New function `setenv' is a better interface to `putenv'.
3376 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
3377 function for traversing a directory tree.
3379 * The GNU obstack package is now also part of the C library.
3380 The new function `open_obstack_stream' creates a stdio stream that
3381 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
3382 formatted output directly to an obstack.
3384 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
3385 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
3387 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
3389 * The new functions `strfry' and `memfrob' do mysterious and wonderful
3390 things to your strings.
3392 * There are some new test programs: test-fseek, testmb, and testrand.
3394 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
3395 These ports are not finished, but are a good starting place for really
3396 supporting those systems.
3398 * `/etc/localtime' is now the standard location for the file that says what
3399 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
3400 This follows the general principle that `/etc' is the place for all local
3401 configuration files.
3403 * The C library header files now use `extern "C"' when used by the C++
3404 compiler, so the C library should now work with C++ code.
3406 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
3407 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
3410 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
3411 function which uses the `merge sort' algorithm, and is said to be
3412 significantly faster than the old GNU `qsort' function. Merge sort is
3413 now the standard `qsort' function. The new algorithm can require a lot
3414 of temporary storage; so, the old sorting function is called when the
3415 required storage is not available.
3417 * The C library now includes Michael Glad's Ultra Fast Crypt, which
3418 provides the Unix `crypt' function, plus some other entry points.
3420 * The code and header files taken from 4.4 BSD have been updated with the
3421 latest files released from Berkeley.
3423 ----------------------------------------------------------------------
3424 Copyright information:
3426 Copyright (C) 1992-2016 Free Software Foundation, Inc.
3428 Permission is granted to anyone to make or distribute verbatim copies
3429 of this document as received, in any medium, provided that the
3430 copyright notice and this permission notice are preserved,
3431 thus giving the recipient permission to redistribute in turn.
3433 Permission is granted to distribute modified versions
3434 of this document, or of portions of it,
3435 under the above conditions, provided also that they
3436 carry prominent notices stating who last changed them.
3439 version-control: never