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 [Add important changes here]
12 Security related changes:
14 [Add security related changes here]
16 The following bugs are resolved with this release:
18 [The release manager will add the list generated by
19 scripts/list-fixed-bugs.py just before the release.]
23 * The minimum Linux kernel version that this version of the GNU C Library
24 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
25 kernel version 2.6.32 or later suffices (on architectures that already
26 required kernel versions more recent than 3.2, those requirements remain
27 unchanged). Linux 3.2 or later kernel headers are required on all
30 * The pap_AN locale has been deleted. This has been deprecated for a long
31 time. It has been replaced by pap_AW & pap_CW, both of which have long
32 been included in previous releases.
34 * The readdir_r and readdir64_r functions have been deprecated. It is
35 recommended to use readdir and readdir64 instead.
37 * The type “union wait” has been removed. It was deprecated in the early
38 1990s and never part of POSIX. Application code should use the int type
39 instead of “union wait”.
41 * A new NSS action is added to facilitate large distributed system
42 administration. The action, MERGE, allows remote user stores like LDAP
43 to be merged into local user stores like /etc/groups in order to provide
44 easy to use, updated, and managed sets of merged credentials. The new
45 action can be used by configuring it in /etc/nsswitch.conf:
46 group: files [SUCCESS=merge] nis
47 Implemented by Stephen Gallagher (Red Hat).
49 * The deprecated __malloc_initialize_hook variable has been removed from the
52 * The long unused localedef --old-style option has been removed. It hasn't
53 done anything in over 16 years. Scripts using this option can safely
56 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
57 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
58 return the next representable value in the direction of positive infinity
59 and the nextdown functions return the next representable value in the
60 direction of negative infinity. These are currently enabled as GNU
63 Security related changes:
65 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
66 could result in a stack overflow when getnetbyname was called with an
67 overly long name. (CVE-2016-3075)
69 * Previously, getaddrinfo copied large amounts of address data to the stack,
70 even after the fix for CVE-2013-4458 has been applied, potentially
71 resulting in a stack overflow. getaddrinfo now uses a heap allocation
72 instead. Reported by Michael Petlan. (CVE-2016-3706)
74 * The glob function suffered from a stack-based buffer overflow when it was
75 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
76 Reported by Alexander Cherepanov. (CVE-2016-1234)
78 * The Sun RPC UDP client could exhaust all available stack space when
79 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
80 alloca plugin for GCC. (CVE-2016-4429)
82 * The IPv6 name server management code in libresolv could result in a memory
83 leak for each thread which is created, performs a failing naming lookup,
84 and exits. Over time, this could result in a denial of service due to
85 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
87 The following bugs are resolved with this release:
89 [1170] localedata: ne_NP: update Nepali locale definition file
90 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
92 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
93 [6796] math: fdim() does not set errno on overflow
94 [10354] libc: posix_spawn should use vfork() in more cases than presently
95 [11213] localedata: localedata: add copyright disclaimer to locale files
96 [12143] localedata: chr_US: new Cherokee locale
97 [12450] localedata: sgs_LT: new locale
98 [12676] localedata: ln_CD: new locale
99 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
101 [13304] math: fma, fmaf, fmal produce wrong results
102 [14259] build: --localedir arg to configure is ignored
103 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
104 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
105 [14934] localedata: es_CL: wrong first weekday chilean locale
106 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
108 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
110 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
111 [15368] nptl: raise() is not async-signal-safe
112 [15479] math: ceil, floor, round and trunc raise inexact exception
113 [15578] localedata: kk_KZ: various updates
114 [16003] localedata: pap_AN: punt old locale
115 [16137] localedata: iw_IL: punt old locale
116 [16190] localedata: eo: new esperanto locale
117 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
118 [16742] malloc: race condition: pthread_atfork() called before first
119 malloc() results in unexpected locking behaviour/deadlocks
120 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
122 [16983] localedata: postal_fmt does not allow %l and %n modifiers
123 [17565] localedata: pt_PT: wrong (work-)week start
124 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
125 [17950] build: Build fails with -msse
126 [18205] localedata: be_BY*: wrong first_weekday and first_workday
127 [18433] libc: posix_spawn does not return correctly upon failure to
129 [18453] localedata: charmaps/IBM875: incorrect codes
130 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
132 [18896] localedata: he_IL: improvements for currency
133 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
135 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
137 [19056] libc: Deprecate readdir_r
138 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
140 [19198] localedata: nl_NL: small improvements for Dutch locales
141 [19257] network: Per-thread memory leak in __res_vinit with IPv6
142 nameservers (CVE-2016-5417)
143 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
145 [19400] locale: Language missing in "iso-639.def", trivial fix in
147 [19431] malloc: Deadlock between fflush, getdelim, and fork
148 [19505] libc: Incorrect file descriptor validity checks in
149 posix_spawn_file_actions_add{open,close,dup2}
150 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
152 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
153 `intl/{gettextP,loadinfo}.h'
154 [19534] libc: execle, execlp may use malloc
155 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
156 [19573] network: res_nclose and __res_maybe_init disagree about name
157 server initialization, breaking Hesiod
158 [19575] localedata: Status of GB18030 tables
159 [19581] localedata: sr_* date_fmt string contains additional newline
160 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
162 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
163 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
164 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
165 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
167 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
169 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
171 [19610] dynamic-link: ldconfig -X removes stale symbolic links
172 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
173 [19633] locale: strfmon_l applies global locale to number formatting
174 [19642] network: Memory leak in getnameinfo
175 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
176 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
178 [19654] math: [x86_64] Need testcase for BZ #19590 fix
179 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
181 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
182 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
184 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
186 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
188 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
189 pointers and lengths in error-case.
190 [19727] locale: Converting from/to UTF-xx with iconv() does not always
191 report errors on UTF-16 surrogates values.
192 [19755] nscd: nscd assertion failure in gc
193 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
194 [19759] libc: mempcpy shouldn't be inlined
195 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
196 [19765] libc: s390 needs an optimized mempcpy
197 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
198 NAME_MAX limit assumption (CVE-2016-1234)
199 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
200 [19787] network: Missing and incorrect truncation checks in getnameinfo
201 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
203 [19791] network: Assertion failure in res_query.c with un-connectable name
205 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
206 [19822] math: libm.so install clobbers old version
207 [19825] network: resolv: send_vc can return uninitialized data in second
208 response to getaddrinfo
209 [19830] network: nss_dns: should check RDATA length against buffer length
210 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
211 confronted with A/AAAA records of invalid size
212 [19837] nss: nss_db: No retries for some long lines with a larger buffer
213 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
214 [19853] stdio: Printing IBM long double in decimal with high precision is
216 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
217 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
218 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
220 [19865] network: Assertion failure or memory leak in
221 _nss_dns_getcanonname_r
222 [19868] network: nss_dns: netent code does not skip over non-PTR records
223 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
225 [19881] string: Improve x86-64 memset
226 [19907] string: Incorrect memcpy tests
227 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
229 [19925] libc: termios.h XCASE namespace
230 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
231 [19929] libc: limits.h NL_NMAX namespace
232 [19931] stdio: Memory leak in vfprintf
233 [19957] libc: clone(CLONE_VM) access invalid parent memory
234 [19963] localedata: en_IL: New locale
235 [19989] stdio: stdio.h cuserid namespace
236 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
238 [19996] locale: langinfo.h nl_langinfo_l namespace
239 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
240 [20010] network: getaddrinfo: Stack overflow in hostent translation
242 [20012] stdio: libio: fmemopen append mode failure
243 [20014] stdio: stdio.h namespace for pre-threads POSIX
244 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
245 [20023] libc: fcntl.h timespec namespace
246 [20024] math: [x86_64] vectorized sincos trashes the stack
247 [20031] network: nss_hesiod: Heap overflow in get_txt_records
248 [20041] time: sys/time.h timespec namespace
249 [20043] libc: unistd.h missing cuserid for UNIX98 and before
250 [20044] libc: unistd.h missing pthread_atfork for UNIX98
251 [20051] libc: ttyslot in wrong header under wrong conditions
252 [20054] libc: gethostname not declared for XPG4
253 [20055] libc: termios.h missing tcgetsid for XPG4
254 [20072] dynamic-link: x86 init_cpu_features is called twice in static
256 [20073] libc: sys/stat.h fchmod namespace
257 [20074] libc: stdlib.h rand_r namespace
258 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
259 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
261 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
262 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
264 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
265 [20119] libc: Wrong mask for processors level type from CPUID
266 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
267 AS not supporting AVX512
268 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
270 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
271 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
273 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
274 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
275 [20178] libc: posix_spawn{p} should not call exit
276 [20191] stdio: libio: vtables hardening
277 [20195] string: FMA4 detection requires CPUID execution with register
279 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
280 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
282 [20212] math: acos (sNaN) returns sNaN
283 [20213] math: asin (sNaN) returns sNaN
284 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
285 [20218] math: [i386] asinhl (sNaN) returns sNaN
286 [20219] math: [i386] atanhl (sNaN) returns sNaN
287 [20222] stdio: fopencookie: Mangle function pointers
288 [20224] math: [i386] cbrtl (sNaN) returns sNaN
289 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
290 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
292 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
293 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
294 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
295 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
296 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
297 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
298 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
299 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
300 [20240] math: modf (sNaN) returns sNaN
301 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
302 [20250] math: frexp (sNaN) returns sNaN
303 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
304 [20255] math: [i386] fdim, fdimf return with excess range and precision /
306 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
307 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
308 subscript is below array bounds [-Werror=array-bounds]
309 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
310 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
312 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
313 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
315 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
317 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
318 [20316] localedata: id_ID: Februari instead of Pebruari
319 [20327] string: POWER8 strcasecmp returns incorrect result
320 [20347] math: Failure: Test: j0_downward (0xap+0)
321 [20348] libc: FAIL: misc/tst-preadvwritev64
322 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
323 [20350] libc: There is no test for p{read,write}64
324 [20357] math: Incorrect cos result for 1.5174239687223976
325 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
329 * Unicode 8.0.0 Support: Character encoding, character type info, and
330 transliteration tables are all updated to Unicode 8.0.0, using new
331 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
332 These updates cause user visible changes, such as the fixes for bugs
333 89, 16061, and 18568.
335 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
336 kernel-internal CPU set size. This means that requests that change the
337 CPU affinity which failed before (for example, an all-ones CPU mask) will
338 now succeed. Applications that need to determine the effective CPU
339 affinities need to call sched_getaffinity or pthread_getaffinity_np after
340 setting it because the kernel can adjust it (and the previous size check
341 would not detect this in the majority of cases).
343 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
344 the following new symbols are used: fts64_children, fts64_close,
345 fts64_open, fts64_read and fts64_set.
347 * getaddrinfo now detects certain invalid responses on an internal netlink
348 socket. If such responses are received, an affected process will
349 terminate with an error message of "Unexpected error <number> on netlink
350 descriptor <number>" or "Unexpected netlink response of size <number> on
351 descriptor <number>". The most likely cause for these errors is a
352 multi-threaded application which erroneously closes and reuses the netlink
353 file descriptor while it is used by getaddrinfo.
355 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
356 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
357 unnecessary serialization of memory allocation requests across threads.
358 The defect is now corrected. Users should see a substantial increase in
359 the concurent throughput of allocation requests for applications which
360 trigger this bug. Affected applications typically create and
361 destroy threads frequently. (Bug 19048 was reported and analyzed by
364 * There is now a --disable-timezone-tools configure option for disabling the
365 building and installing of the timezone related utilities (zic, zdump, and
366 tzselect). This is useful for people who build the timezone data and code
367 independent of the GNU C Library.
369 * The obsolete header <regexp.h> has been removed. Programs that require
370 this header must be updated to use <regex.h> instead.
372 * The obsolete functions bdflush, create_module, get_kernel_syms,
373 query_module and uselib are no longer available to newly linked binaries;
374 the header <sys/kdaemon.h> has been removed. These functions and header
375 were specific to systems using the Linux kernel and could not usefully be
376 used with the GNU C Library on systems with version 2.6 or later of the
379 * Optimized string, wcsmbs and memory functions for IBM z13.
380 Implemented by Stefan Liebler.
382 * Newly linked programs that define a variable called signgam will no longer
383 have it set by the lgamma, lgammaf and lgammal functions. Programs that
384 require signgam to be set by those functions must ensure that they use the
385 variable provided by the GNU C Library and declared in <math.h>, without
386 defining their own copy.
388 * The minimum GCC version that can be used to build this version of the GNU
389 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
390 still be used to compile programs using the GNU C Library.
392 Security related changes:
394 * An out-of-bounds value in a broken-out struct tm argument to strftime no
395 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
397 * The LD_POINTER_GUARD environment variable can no longer be used to disable
398 the pointer guard feature. It is always enabled. Previously,
399 LD_POINTER_GUARD could be used to disable security hardening in binaries
400 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
403 * An integer overflow in hcreate and hcreate_r could lead to an
404 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
406 * The catopen function no longer has unbounded stack usage. Reported by
409 * The nan, nanf and nanl functions no longer have unbounded stack usage
410 depending on the length of the string passed as an argument to the
411 functions. Reported by Joseph Myers. (CVE-2014-9761)
413 * A stack-based buffer overflow was found in libresolv when invoked from
414 libnss_dns, allowing specially crafted DNS responses to seize control
415 of execution flow in the DNS client. The buffer overflow occurs in
416 the functions send_dg (send datagram) and send_vc (send TCP) for the
417 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
418 family. The use of AF_UNSPEC triggers the low-level resolver code to
419 send out two parallel queries for A and AAAA. A mismanagement of the
420 buffers used for those queries could result in the response of a query
421 writing beyond the alloca allocated buffer created by
422 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
423 the overflow. Thanks to the Google Security Team and Red Hat for
424 reporting the security impact of this issue, and Robert Holiday of
425 Ciena for reporting the related bug 18665. (CVE-2015-7547)
427 The following bugs are resolved with this release:
429 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
430 [887] math: Math library function "logb" and "nextafter" inconsistent
431 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
432 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
433 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
434 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
436 [4404] localedata: German translation of "Alarm clock" is misleading
437 [6799] math: nextafter() and nexttoward() doen't set errno on
438 overflow/underflow errors
439 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
441 [10432] nis: _nss_nis_setnetgrent assertion failure
442 [11460] libc: fts has no LFS support
443 [12926] network: getaddrinfo()/make_request() may spin forever
444 [13065] nptl: Race condition in pthread barriers
445 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
446 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
448 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
449 [14912] libc: Rename non-installed bits/*.h headers
450 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
451 [15367] math: Let gcc use __builtin_isinf
452 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
453 [15421] math: lgamma wrongly sets signgam for ISO C
454 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
455 FE_INVALID with argument out of range
456 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
458 [15786] dynamic-link: ifunc resolver functions can smash function
460 [15918] math: Unnecessary check for equality in hypotf()
461 [16061] localedata: Review / update transliteration data
462 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
464 [16141] time: strptime %z offset restriction
465 [16171] math: drem should be alias of remainder
466 [16296] math: fegetround is pure?
467 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
468 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
470 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
471 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
473 [16422] math: [powerpc] math-float, math-double failing llrint tests with
474 "Exception "Inexact" set" on ppc32
475 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
476 [16517] math: Missing underflow exception from tanf/tan/tanl
477 [16519] math: Missing underflow exception from sinhf
478 [16520] math: Missing underflow exception from tanhf
479 [16521] math: Missing underflow exception from exp2
480 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
482 [16734] stdio: fopen calls mmap to allocate its buffer
483 [16961] math: nan function incorrect handling of bad sequences
484 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
485 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
486 [16985] locale: localedef: confusing error message when opening output
488 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
489 [17197] locale: Redundant shift character in iconv conversion output at
491 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
492 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
493 [17250] dynamic-link: static linking breaks nss loading
494 (getaddrinfo/getpwnam/etc...)
495 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
497 [17441] math: isnan() should use __builtin_isnan() in GCC
498 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
499 (related to lock elision)
500 [17787] manual: Exponent on page 324 of the PDF ends prematurely
501 [17886] time: strptime should be able to parse "Z" as a timezone with %z
502 [17887] time: strptime should be able to parse "+01:00" style timezones
503 [17905] libc: catopen() Multiple unbounded stack allocations
505 [18084] libc: backtrace (..., 0) dumps core on x86
506 [18086] libc: nice() sets errno to 0 on success
507 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
508 is too large (CVE-2015-8778)
509 [18251] dynamic-link: SONAME missing when audit modules provides path
510 [18265] libc: add attributes for wchar string and memory functions
511 [18370] math: csqrt missing underflows
512 [18421] libc: [hppa] read-only segment has dynamic relocations
513 [18472] libc: Obsolete syscall wrappers should be compat symbols
514 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
515 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
516 [18525] localedata: Remove locale timezone information
517 [18560] libc: [powerpc] spurious bits/ipc.h definitions
518 [18568] localedata: Update locale data to Unicode 8.0
519 [18589] locale: sort-test.sh fails at random
520 [18595] math: ctan, ctanh missing underflows
521 [18604] libc: assert macro-expands its argument
522 [18610] math: S390: fetestexcept() reports any exception if DXC-code
523 contains a vector instruction exception.
524 [18611] math: j1, jn missing errno setting on underflow
525 [18618] localedata: sync Chechen locale definitions with other *_RU
527 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
528 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
529 [18665] network: In send_dg, the recvfrom function is NOT always using the
530 buffer size of a newly created buffer (CVE-2015-7547)
531 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
533 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
535 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
536 [18699] math: tilegx cproj() for various complex infinities does not yield
538 [18724] libc: Harden put*ent functions against data injection
539 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
540 [18755] build: build errors with -DNDEBUG
541 [18757] stdio: fmemopen fails to set errno on failure
542 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
544 [18781] libc: openat64 lacks O_LARGEFILE
545 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
546 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
547 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
548 [18790] math: [ldbl-128ibm] tanhl inaccurate
549 [18795] libc: stpncpy fortification misses buffer lengths that are
551 [18796] build: build fails for --disable-mathvec
552 [18803] math: hypot missing underflows
553 [18820] stdio: fmemopen may leak memory on failure
554 [18823] math: csqrt spurious underflows
555 [18824] math: fma spurious underflows
556 [18825] math: pow missing underflows
557 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
558 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
559 [18870] build: sem_open.c fails to compile with missing symbol
561 [18872] stdio: Fix memory leak in printf_positional
562 [18873] libc: posix_fallocate overflow check ineffective
563 [18875] math: Excess precision leads incorrect libm
564 [18877] libc: arm: mmap offset regression
565 [18887] libc: memory corruption when using getmntent on blank lines
566 [18918] localedata: hu_HU: change time to HH:MM:SS format
567 [18921] libc: Regression: extraneous stat() and fstat() performed by
569 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
570 binaries (CVE-2015-8777)
571 [18951] math: tgamma missing underflows
572 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
574 [18953] localedata: lt_LT: change currency symbol to the euro
575 [18956] math: powf inaccuracy
576 [18961] math: [i386] exp missing underflows
577 [18966] math: [i386] exp10 missing underflows
578 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
579 [18969] build: multiple string test failures due to missing locale
581 [18970] libc: Reference of pthread_setcancelstate in libc.a
582 [18977] math: float / long double Bessel functions not in XSI POSIX
583 [18980] math: i386 libm functions return with excess range and precision
584 [18981] math: i386 scalb*, ldexp return with excess range and precision
585 [18982] stdio: va_list and vprintf
586 [18985] time: Passing out of range data to strftime() causes a segfault
588 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
589 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
590 [19012] locale: iconv_open leaks memory on error path
591 [19016] math: clog, clog10 inaccuracy
592 [19018] nptl: Mangle function pointers in tls_dtor_list
593 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
594 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
595 [19048] malloc: malloc: arena free list can become cyclic, increasing
597 [19049] math: [powerpc] erfc incorrect zero sign
598 [19050] math: [powerpc] log* incorrect zero sign
599 [19058] math: [x86_64] Link fail with -fopenmp and -flto
600 [19059] math: nexttoward overflow incorrect in non-default rounding modes
601 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
602 [19074] network: Data race in _res_hconf_reorder_addrs
603 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
604 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
605 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
607 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
609 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
610 [19086] manual: posix_fallocate64 documented argument order is wrong.
611 [19088] math: lround, llround missing exceptions close to overflow
613 [19094] math: lrint, llrint missing exceptions close to overflow threshold
614 [19095] math: dbl-64 lrint incorrect for 64-bit long
615 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
616 [19124] dynamic-link: ld.so failed to build with older assmebler
617 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
618 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
619 [19134] math: [powerpc32] lround, lroundf spurious exceptions
620 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
621 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
622 pthread_setaffinity_np
623 [19156] math: [ldbl-128] j0l spurious underflows
624 [19164] nptl: tst-getcpu fails with many possible CPUs
625 [19168] math: math/test-ildoubl and math/test-ldouble failure
626 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
627 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
629 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
630 (FE_NOMASK_ENV) do not clear SSE exceptions
631 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
632 _int_new_arena/reused_arena
633 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
634 [19201] math: dbl-64 remainder incorrect sign of zero result
635 [19205] math: bits/math-finite.h conditions do not match math.h and
637 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
638 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
639 for C99-based standards
640 [19212] libc: features.h not -Wundef clean
641 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
643 [19214] libc: Family and model identification for AMD CPU's are incorrect.
644 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
645 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
647 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
649 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
651 [19242] libc: strtol incorrect in Turkish locales
652 [19243] malloc: reused_arena can pick an arena on the free list, leading
653 to an assertion failure and reference count corruption
654 [19253] time: tzset() ineffective when temporary TZ did not include DST
656 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
657 [19270] math: [hppa] Shared libm missing __isnanl
658 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
659 MAP_HUGETLB and MAP_STACK defines
660 [19313] nptl: Wrong __cpu_mask for x32
661 [19347] libc: grantpt: try to force a specific gid even without pt_chown
662 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
663 [19350] math: [ldbl-128ibm] sinhl spurious overflows
664 [19351] math: [ldbl-128ibm] logl inaccurate near 1
665 [19363] time: x32: times() return value wrongly truncates/sign extends
667 [19367] dynamic-link: Improve branch prediction on Silvermont
668 [19369] network: Default domain name not reset by res_ninit when "search"
669 / "domain" entry is removed from resolv.conf
670 [19375] math: powerpc: incorrect results for POWER7 logb with negative
672 [19385] localedata: bg_BG: time separator should be colon, not comma
673 [19408] libc: linux personality syscall wrapper may erroneously return an
674 error on 32-bit architectures
675 [19415] libc: dladdr returns wrong names on hppa
676 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
677 IBM905, IBM907, and IBM909
678 [19439] math: Unix98 isinf and isnan functions conflict with C++11
679 [19443] build: build failures with -DDEBUG
680 [19451] build: Make check fails on test-double-vlen2
681 [19462] libc: Glibc failed to build with -Os
682 [19465] math: Wrong code with -Os
683 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
685 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
687 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
688 [19486] math: S390: Math tests fail with "Exception Inexact set".
689 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
690 [19550] libc: [mips] mmap negative offset handling inconsistent with other
692 [19590] math: Fail to build shared objects that use libmvec.so functions.
696 * The following bugs are resolved with this release:
698 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
699 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
700 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
701 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
702 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
703 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
704 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
705 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
706 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
707 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
708 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
709 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
710 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
711 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
712 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
713 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
714 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
715 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
716 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
717 18657, 18676, 18694, 18696, 18887.
719 * Cache information can be queried via sysconf() function on s390 e.g. with
720 _SC_LEVEL1_ICACHE_SIZE as argument.
722 * A buffer overflow in gethostbyname_r and related functions performing DNS
723 requests has been fixed. If the NSS functions were called with a
724 misaligned buffer, the buffer length change due to pointer alignment was
725 not taken into account. This could result in application crashes or,
726 potentially arbitrary code execution, using crafted, but syntactically
727 valid DNS responses. (CVE-2015-1781)
729 * The time zone file parser has been made more robust against crafted time
730 zone files, avoiding heap buffer overflows related to the processing of
731 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
732 large time zone data files. Overly long time zone specifiers in the TZ
733 variable no longer result in stack overflows and crashes.
735 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
736 for LD and GD on x86 and x86-64, has been implemented. You will need
737 binutils-2.24 or later to enable this optimization.
739 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
740 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
741 Hat). These updates cause user visible changes, such as the fix for bug
744 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
745 and getXXbyYY NSS calls for the same database, causing a denial-of-service
746 condition in some applications.
748 * Added vector math library named libmvec with the following vectorized x86_64
749 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
751 The library can be disabled with --disable-mathvec. Use of the functions is
752 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
753 Shared library libmvec.so is linked in as needed when using -lm (no need to
754 specify -lmvec explicitly for not static builds).
755 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
757 * A new fmemopen implementation has been added with the goal of POSIX
758 compliance. The new implementation fixes the following long-standing
759 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
760 old implementation is still present for use be by existing binaries.
762 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
763 releases. It has been fixed to match 2.19 and older, but binaries built
764 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
766 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
767 Contributed by Roland McGrath (Google).
769 * The header <regexp.h> is deprecated, and will be removed in a future
770 release. Use of this header will trigger a deprecation warning.
771 Application developers should update their code to use <regex.h> instead.
773 This header was formerly part of SUS, but was deprecated in 1994 and
774 removed from the standard in 2001. Also, the glibc implementation
775 leaks memory. See BZ#18681 for more details.
779 * The following bugs are resolved with this release:
781 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
782 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
783 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
784 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
785 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
786 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
787 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
788 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
789 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
790 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
793 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
794 too little memory for the to-be-scanned arguments and overflow the
795 allocated buffer. The implementation now correctly computes the required
796 buffer size when using malloc, and switches to malloc from alloca as
799 * A new semaphore algorithm has been implemented in generic C code for all
800 machines. Previous custom assembly implementations of semaphore were
801 difficult to reason about or ensure that they were safe. The new version
802 of semaphore supports machines with 64-bit or 32-bit atomic operations.
803 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
804 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
806 * Port to Altera Nios II has been contributed by Mentor Graphics.
808 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
809 implementations for powerpc64/powerpc64le.
810 Implemented by Adhemerval Zanella (IBM).
812 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
813 and powerpc64le. This may improve lock scaling of existing programs on
814 HTM capable systems. The lock elision code is only enabled with
815 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
816 powerpc will issue a transaction abort on every syscall to avoid side
817 effects being visible outside transactions.
819 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
820 AArch64. Contributed by ARM Ltd.
822 * i386 memcpy functions optimized with SSE2 unaligned load/store.
824 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
825 under certain input conditions resulting in the execution of a shell for
826 command substitution when the application did not request it. The
827 implementation now checks WRDE_NOCMD immediately before executing the
828 shell and returns the error WRDE_CMDSUB as expected.
830 * CVE-2012-3406 printf-style functions could run into a stack overflow when
831 processing format strings with a large number of format specifiers.
833 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
834 infinite loop if the DNS response contained a PTR record of an unexpected
837 * The minimum GCC version that can be used to build this version of the GNU
838 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
839 still be used to compile programs using the GNU C Library.
841 * The GNU C Library is now built with -Werror by default. This can be
842 disabled by configuring with --disable-werror.
844 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
846 * The obsolete sigvec function has been removed. This was the original
847 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
848 programs have been using instead for about 25 years. Of course, ABI
849 compatibility for old binaries using sigvec remains intact.
851 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
852 with newer versions of bison.
854 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
855 The original MIPS o32 hard-float ABI requires an FPU where double-precision
856 registers overlay two consecutive single-precision registers. MIPS32R2
857 introduced a new FPU mode (FR=1) where double-precision registers extend the
858 corresponding single-precision registers which is incompatible with the
859 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
860 require the use of FR=1 making a transition necessary. New o32 ABI
861 extensions enable users to migrate over time from the original o32 ABI
862 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
863 tracks the ABI of any loaded object and verifies that new objects are
864 compatible. Mode transitions will also be requested as required and
865 unsupportable objects will be rejected. The ABI checks include both soft and
866 hard float ABIs for o32, n32 and n64.
868 GCC 5 with GNU binutils 2.25 onwards:
869 It is strongly recommended that all o32 system libraries are built using the
870 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
871 with the original and all new o32 ABI extensions. Configure a MIPS GCC
872 compiler using --with-fp-32=xx to set this by default.
876 * The following bugs are resolved with this release:
878 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
879 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
880 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
881 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
882 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
883 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
884 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
885 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
886 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
887 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
888 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
889 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
890 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
891 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
892 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
894 * Reverted change of ABI data structures for s390 and s390x:
895 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
896 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
897 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
898 are preserved pointing straight to the same implementation as the old ones.
899 Given that, new callers will simply provide a too-big buffer to these
900 functions. Any applications/libraries out there that embed jmp_buf or
901 ucontext_t in an ABI-relevant data structure that have already been rebuilt
902 against 2.19 headers will have to rebuilt again. This is necessary in any
903 case to revert the breakage in their ABI caused by the glibc change.
905 * Support for file description locks is added to systems running the
906 Linux kernel. The standard file locking interfaces are extended to
907 operate on file descriptions, not file descriptors, via the use of
908 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
909 are associated with an open file instead of a process.
911 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
913 * The minimum Linux kernel version that this version of the GNU C Library
914 can be used with is 2.6.32.
916 * Running the testsuite no longer terminates as soon as a test fails.
917 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
918 with PASS or FAIL lines for individual tests. A summary of the results is
919 printed, including a list of failing lists, and "make check" exits with
920 error status if there were any unexpected failures. "make check
921 stop-on-test-failure=y" may be used to keep the old behavior.
923 * The am33 port, which had not worked for several years, has been removed
926 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
927 supported; they now act the same as _DEFAULT_SOURCE (but generate a
928 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
929 conflicted with POSIX (support for which was removed in 2.19), the
930 interfaces those macros enabled remain available when compiling with
931 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
934 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
936 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
937 This may improve lock scaling of existing programs on TX capable systems.
938 The lock elision code is only built with --enable-lock-elision=yes and
939 then requires a GCC version supporting the TX builtins. With lock elision
940 default mutexes are elided via __builtin_tbegin, if the cpu supports
941 transactions. By default lock elision is not enabled and the elision code
944 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
945 copy the path argument. This allowed programs to cause posix_spawn to
946 deference a dangling pointer, or use an unexpected pathname argument if
947 the string was modified after the posix_spawn_file_actions_addopen
950 * All supported architectures now use the main glibc sysdeps directory
951 instead of some being in a separate "ports" directory (which was
952 distributed separately before glibc 2.17).
954 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
955 On configurations that support it (all Linux configurations), it's now
956 used regardless of the --enable-add-ons switch to configure. It is no
957 longer possible to build such configurations without pthreads support.
959 * Locale names, including those obtained from environment variables (LANG
960 and the LC_* variables), are more tightly checked for proper syntax.
961 setlocale will now fail (with EINVAL) for locale names that are overly
962 long, contain slashes without starting with a slash, or contain ".." path
963 components. (CVE-2014-0475) Previously, some valid locale names were
964 silently replaced with the "C" locale when running in AT_SECURE mode
965 (e.g., in a SUID program). This is no longer necessary because of the
968 * On x86-64, the dynamic linker's lazy-binding support is now compatible
969 with application code using Intel MPX instructions. (With all previous
970 versions, the MPX register state could be clobbered when making calls
971 into or out of a shared library.) Note that while the new dynamic
972 linker is compatible with all known x86 hardware whether or not it
973 supports Intel MPX, some x86 instruction-set emulators might fail to
974 handle the new instruction encodings. This is known to affect Valgrind
975 versions up through 3.9 (but will be fixed in the forthcoming 3.10
976 release), and might affect other tools that do instruction emulation.
978 * Support for loadable gconv transliteration modules has been removed.
979 The support for transliteration modules has been non-functional for
980 over a decade, and the removal is prompted by security defects. The
981 normal gconv conversion modules are still supported. Transliteration
982 with //TRANSLIT is still possible, and the //IGNORE specifier
983 continues to be supported. (CVE-2014-5119)
985 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
986 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
987 resulting a denial-of-service security vulnerability in applications which
988 use functions related to iconv. (CVE-2014-6040)
992 * The following bugs are resolved with this release:
994 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
995 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
996 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
997 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
998 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
999 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
1000 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
1001 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
1002 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
1003 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
1004 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
1005 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
1006 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
1007 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
1008 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
1009 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
1010 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
1011 16431, 16453, 16474, 16506, 16510, 16529
1013 * Slovenian translations for glibc messages have been contributed by the
1014 Translation Project's Slovenian team of translators.
1016 * The public headers no longer use __unused nor __block. This change is to
1017 support compiling programs that are derived from BSD sources and use
1018 __unused internally, and to support compiling with Clang's -fblock
1019 extension which uses __block.
1021 * CVE-2012-4412 The strcoll implementation caches indices and rules for
1022 large collation sequences to optimize multiple passes. This cache
1023 computation may overflow for large collation sequences and may cause a
1024 stack or buffer overflow. This is now fixed to use a slower algorithm
1025 which does not use a cache if there is an integer overflow.
1027 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
1028 rules for large collation sequences to optimize multiple passes and falls
1029 back to alloca if malloc fails, resulting in a possible stack overflow.
1030 The implementation now falls back to an uncached collation sequence lookup
1033 * CVE-2013-4788 The pointer guard used for pointer mangling was not
1034 initialized for static applications resulting in the security feature
1035 being disabled. The pointer guard is now correctly initialized to a
1036 random value for static applications. Existing static applications need
1037 to be recompiled to take advantage of the fix (bug 15754).
1039 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
1040 to the d_name member of struct dirent, or omit the terminating NUL
1041 character. (Bugzilla #14699).
1043 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
1044 aligned_alloc functions could allocate too few bytes or corrupt the
1045 heap when passed very large allocation size values (Bugzilla #15855,
1048 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
1049 for AF_INET6 has been fixed (Bugzilla #16072).
1051 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
1052 pap_CW, quz_PE, the_NP.
1054 * Substantially revised locales: gd_GB, ht_HT
1056 * The LC_ADDRESS field was updated to support country_car for almost all
1059 * ISO 1427 definitions were updated.
1061 * ISO 3166 definitions were updated.
1063 * The localedef utility now supports --big-endian and --little-endian
1064 command-line options to generate locales for a different system from that
1065 for which the C library was built.
1067 * Binary locale files now only depend on the endianness of the system for
1068 which they are generated and not on other properties of that system. As a
1069 consequence, binary files generated with new localedef may be incompatible
1070 with old versions of the GNU C Library, and binary files generated with
1071 old localedef may be incompatible with this version of the GNU C Library,
1072 in the following circumstances:
1074 + Locale files may be incompatible on m68k systems.
1076 + Locale archive files (but not separate files for individual locales) may
1077 be incompatible on systems where plain "char" is signed.
1079 * The configure option --disable-versioning has been removed. Builds with
1080 --disable-versioning had not worked for several years.
1082 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
1083 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
1085 * SystemTap probes for malloc have been introduced.
1087 * SystemTap probes for slow multiple precision fallback paths of
1088 transcendental functions have been introduced.
1090 * Support for powerpc64le has been added.
1092 * The soft-float powerpc port now supports e500 processors.
1094 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
1096 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
1097 set of header declarations that are enabled by default, even when other
1098 feature test macros or compiler options such as -std=c99 would otherwise
1099 disable some of those declarations.
1101 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
1102 conflict with POSIX. The libbsd-compat library (which was a dummy library
1103 that did nothing) has also been removed.
1105 * Preliminary documentation about Multi-Thread, Async-Signal and
1106 Async-Cancel Safety has been added.
1108 * Change of ABI data structures for s390 and s390x:
1109 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
1110 allow for future hardware extensions. All library functions that accept or
1111 return these structures were versioned in order to provide backwards
1112 compatibility with existing code. However, not all cases can be handled
1113 with interface versioning. If an application embeds either structure into
1114 another structure and that structure is passed to another compilation unit
1115 which expects the newer larger-sized object then any access to the new
1116 fields will result in undefined behaviour. Similarly any access to fields
1117 that were moved by the enlarging of the structures will cause undefined
1118 behaviour. To fix the undefined behaviour all objects that are part of the
1119 final in-memory image must agree on the size of structures, and this may
1120 require recompilation.
1124 * The following bugs are resolved with this release:
1126 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
1127 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
1128 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
1129 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
1130 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
1131 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
1132 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
1133 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
1134 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
1135 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
1136 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
1137 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
1138 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
1141 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
1142 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
1143 Distributions can re-enable building and using pt_chown via the new configure
1144 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
1145 considerable security risks and should only be used if the distribution
1146 understands and accepts the risks.
1148 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
1151 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
1152 fixed (Bugzilla #15330).
1154 * Add support for calling C++11 thread_local object destructors on thread
1155 and program exit. This needs compiler support for offloading C++11
1156 destructor calls to glibc.
1158 * Improved worst case performance of libm functions with double inputs and
1161 * Support for priority inherited mutexes in pthread condition variables on
1162 non-x86 architectures.
1164 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
1166 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
1168 * Optimized string functions for ARM. Implemented by Will Newton and
1171 * Optimized libm functions for SPARC. Implemented by David S. Miller.
1173 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
1176 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
1177 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
1179 * Added a benchmark framework to track performance of functions in glibc.
1181 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
1182 It is based on draft TS 18661 and currently enabled as a GNU extension.
1184 * On Linux, the clock function now uses the clock_gettime system call
1185 for improved precision, rather than old times system call.
1187 * Added support for version-3 tz format files. This is needed when using
1188 the tz database release 2013e or later, and affects a few unusual cases --
1189 currently only TZ='America/Godthab' for time stamps after 2037.
1191 * Added new API functions pthread_getattr_default_np and
1192 pthread_setattr_default_np to get and set the default pthread
1193 attributes of a process.
1195 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
1196 This may improve lock scaling of existing programs on TSX capable systems.
1197 When the --enable-lock-elision=yes parameter is specified at configure
1198 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
1201 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
1202 availability). Implemented by Ryan S. Arnold.
1204 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
1208 * The following bugs are resolved with this release:
1210 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
1211 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
1212 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
1213 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
1214 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
1215 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
1216 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
1217 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
1218 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
1219 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
1220 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
1221 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
1222 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
1223 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
1224 14879, 14889, 14893, 14898, 14914.
1226 * Optimization of memcpy for MIPS.
1228 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
1229 EMFILE has been fixed (Bugzilla #14889).
1231 * The add-on ports collection is now distributed in the "ports" subdirectory
1232 of the main GNU C Library distribution, rather than separately.
1234 * Port to ARM AArch64 contributed by Linaro.
1236 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
1237 Optimized versions of memcpy, memset, and memcmp added for System z10 and
1239 Implemented by Andreas Krebbel.
1241 * The new function secure_getenv allows secure access to the environment,
1242 returning NULL if running in a SUID/SGID process. This function replaces
1243 the internal function __secure_getenv.
1245 * SystemTap static probes have been added into the dynamic linker.
1246 Implemented by Gary Benson.
1248 * Optimizations of string functions strstr, strcasestr and memmem.
1249 Implemented by Maxim Kuvyrkov.
1251 * The minimum Linux kernel version that this version of the GNU C Library
1252 can be used with is 2.6.16.
1254 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
1255 powerpc POWER7. Implemented by Will Schmidt.
1257 * New configure option --disable-nscd builds the C library such that it
1258 never attempts to contact the Name Service Caching Daemon (nscd).
1259 New configure option --disable-build-nscd avoids building nscd itself;
1260 this is the default if --disable-nscd is used.
1262 * Improved support for cross-compilation, including cross-testing and
1263 bootstrap builds without a previously built glibc.
1265 * Several testsuite tests are now able to test multiple IFUNC variants of an
1266 interface, rather than just testing the one that would be chooen by
1269 * New configure options --with-bugurl and --with-pkgversion, for
1270 distributors to use to embed their bug-reporting and package version
1271 information in --help and --version output.
1273 * The ttyname and ttyname_r functions on Linux now fall back to searching for
1274 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
1275 allows creation of chroots without the procfs mounted on /proc.
1277 * The `crypt' function now fails if passed salt bytes that violate the
1278 specification for those values. On Linux, the `crypt' function will
1279 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
1280 enabled, and fail on encrypted strings using the MD5 or DES algorithm
1281 when the mode is enabled.
1283 * The `clock_*' suite of functions (declared in <time.h>) is now available
1284 directly in the main C library. Previously it was necessary to link with
1285 -lrt to use these functions. This change has the effect that a
1286 single-threaded program that uses a function such as `clock_gettime' (and
1287 is not linked with -lrt) will no longer implicitly load the pthreads
1288 library at runtime and so will not suffer the overheads associated with
1289 multi-thread support in other code such as the C++ runtime library.
1291 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
1296 * The following bugs are resolved with this release:
1298 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
1299 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
1300 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
1301 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
1302 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
1303 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
1304 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
1305 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
1306 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
1307 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
1308 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
1309 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
1310 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
1311 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
1312 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
1313 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
1314 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
1315 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
1316 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
1317 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
1318 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
1319 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
1322 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
1323 configuring glibc with:
1324 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
1325 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
1326 Implemented by H.J. Lu.
1330 + define static_assert
1332 + do not declare gets
1334 + declare at_quick_exit and quick_exit also for ISO C11
1336 + aligned_alloc. NB: The code is deliberately allows the size parameter
1337 to not be a multiple of the alignment. This is a moronic requirement
1338 in the standard but it is only a requirement on the caller, not the
1341 + timespec_get added
1343 + uchar.h support added
1345 + CMPLX, CMPLXF, CMPLXL added
1347 Implemented by Ulrich Drepper.
1349 * Support for the IA-64 has been moved to ports.
1351 * Remove support for anything but ELF binary format
1353 * Checking versions of poll, ppoll added.
1354 Implemented by Ulrich Drepper.
1356 * More generic and 64-bit performance optimizations to math functions.
1357 Implemented by Ulrich Drepper.
1359 * New configure option --enable-obsolete-rpc makes the deprecated RPC
1360 headers and functions available at compile time as they were before
1361 version 2.14. This option will be removed at some time in the future
1362 after the TI-RPC library becomes fully sufficient for the needs of
1363 existing applications.
1365 * Compatibility code for Linux kernel versions before 2.4 has been removed.
1366 Note that glibc is not expected to work with any Linux kernel version
1369 * New header <sys/auxv.h> and function getauxval allowing easy access to
1370 the AT_* key-value pairs passed from the Linux kernel. The header also
1371 defines the HWCAP_* bits associated with the AT_HWCAP key.
1373 * New locales: mag_IN
1375 * New configure option --enable-systemtap builds SystemTap static probes
1376 into libc for setjmp and longjmp and into libpthread for various operations.
1377 So far the setjmp/longjmp probes and some of the libpthread probes are
1378 provided only for i*86 and x86_64.
1379 Implemented by Roland McGrath and Rayson Ho.
1381 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
1383 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
1386 * More optimized functions for SPARC. Implemented by David S. Miller.
1388 * Improved support for cross-compilation, especially bootstrap builds
1389 without a previously built glibc.
1391 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
1392 Chris Metcalf from Tilera.
1394 * Support for the old ARM ABI has been removed from ports. Only the EABI is
1395 now supported for ARM processors.
1397 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
1398 as the name of the dynamic linker, to distinguish it from the
1399 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
1401 * Support for CRIS has been removed from ports.
1403 * A new class of installed header has been documented for low-level
1404 platform-specific functionality. PowerPC added the first instance with a
1405 function to provide time base register access. Contributed by Tulio
1406 Magno Quites Machado Filho.
1408 * ix86 configurations now install header files that are consistent with
1409 what x86-64 configurations install. These same header files can be used
1410 for -m32, -m64, or -mx32 builds.
1411 Contributed by H.J. Lu.
1413 * Math library bug fixes. A thorough audit of all open math library bugs was
1414 conducted by Joseph Myers. Significant progress was made on many math
1415 library bugs resulting in more accurate exceptions and function results.
1416 Many thanks to all those that contributed including Andreas Jaeger for his
1417 patch review and work on the x87 trigonometric instruction issues.
1419 * Timezone data is no longer installed. Timezone-related binaries and scripts
1420 will continue to be installed. Users should obtain their timezone data from
1421 their distribution provider or from the tzdata package at
1422 <ftp://munnari.oz.au/pub/>.
1426 * The following bugs are resolved with this release:
1428 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
1429 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
1430 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
1431 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
1432 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
1433 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
1434 13484, 13506, 13515, 13523, 13524, 13538, 13540
1436 * New program pldd to list loaded object of a process
1437 Implemented by Ulrich Drepper.
1439 * Add nss_db support back to glibc. No more dependency on Berkeley db
1440 and support for initgroups lookups.
1441 Implemented by Ulrich Drepper.
1443 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
1444 Contributed by HJ Lu.
1446 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
1447 Contributed by HJ Lu.
1449 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
1450 on x86-32 and x86-64.
1451 Contributed by Liubov Dmitrieva.
1453 * Optimized strchr and strrchr for SSE on x86-32.
1454 Contributed by Liubov Dmitrieva.
1456 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
1457 for x86-64 and x86-32.
1458 Contributed by Liubov Dmitrieva.
1460 * New interfaces: scandirat, scandirat64
1461 Implemented by Ulrich Drepper.
1463 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
1464 Implemented by Ulrich Drepper.
1466 * nscd now also caches the netgroup database.
1467 Implemented by Ulrich Drepper.
1469 * Integrate libm with gcc's -ffinite-math-only option.
1470 Implemented by Ulrich Drepper.
1472 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
1473 to math functions. Implemented by Ulrich Drepper.
1475 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
1476 Implemented by Ulrich Drepper.
1478 * New Linux interfaces: process_vm_readv, process_vm_writev
1480 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
1481 Implemented by Ulrich Drepper.
1483 * Optimized nearbyint and strcasecmp for PPC.
1484 Implemented by Adhemerval Zanella.
1486 * New locales: bho_IN, unm_US, es_CU, ta_LK
1490 * The following bugs are resolved with this release:
1492 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
1493 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
1494 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
1495 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
1496 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
1497 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
1498 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
1499 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
1500 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
1501 12795, 12811, 12813, 12814, 12841
1503 * The RPC implementation in libc is obsoleted. Old programs keep working
1504 but new programs cannot be linked with the routines in libc anymore.
1505 Programs in need of RPC functionality must be linked against TI-RPC.
1506 The TI-RPC implementation is IPv6 enabled and there are other benefits.
1508 Visible changes of this change include (obviously) the inability to link
1509 programs using RPC functions without referencing the TI-RPC library and the
1510 removal of the RPC headers from the glibc headers.
1511 Implemented by Ulrich Drepper.
1513 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
1514 syncfs, setns, sendmmsg
1516 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
1517 yue_HK, lij_IT, mhr_RU
1519 * New encodings: CP770, CP771, CP772, CP773, CP774
1521 * New program sotruss to trace calls through PLTs
1522 Implemented by Ulrich Drepper.
1524 * The malloc hook implementation is marked deprecated and will be removed
1525 from the default implementation in the next version. The design never
1526 worked ever since the introduction of threads. Even programs which do
1527 not create threads themselves can use multiple threads created internally.
1531 * The following bugs are resolved with this release:
1533 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
1534 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
1535 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
1536 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
1539 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
1541 * POWER7 optimizations: memset, memcmp, strncmp
1543 * New optimized string functions for x86-64: strnlen (SSE2),
1544 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
1545 Implemented by Ulrich Drepper.
1549 * The following bugs are resolved with this release:
1551 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
1552 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
1553 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
1554 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
1555 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
1556 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
1557 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
1558 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
1560 * New interfaces: pthread_getname_np, pthread_setname_np
1562 * New Linux interface: recvmmsg
1564 * STT_GNU_IFUNC implemented for Sparc by David Miller.
1566 * The dynamic linker now recognizes supported ABI versions from the
1567 EI_ABIVERSION field in the ELF header.
1568 Implemented by Ulrich Drepper.
1570 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
1571 will not be used to fill in password fields in the passwd.byname replies.
1572 Instead it is used to synthesize the shadow.byname table, should it be
1573 missing. This is a useful mode in some installations involving Solaris.
1574 Implemented by Ulrich Drepper.
1576 * New locales: kok_IN, sq_MK, cv_RU
1580 * The following bugs are resolved with this release:
1582 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
1583 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
1584 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
1585 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
1586 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
1587 10789, 10817, 10823, 10840, 10847
1589 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
1591 Implemented by Ulrich Drepper.
1593 * Checking version of longjmp added that fails if an uninitialized stack
1594 frame would be created. Implemented by Ulrich Drepper.
1596 * STT_GNU_IFUNC is now supported in static executables.
1597 Implemented by H.J. Lu.
1599 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
1601 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
1602 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
1603 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
1604 Contributed by H.J. Lu.
1606 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
1607 Implemented by Ulrich Drepper.
1609 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
1611 Contributed by H.J. Lu.
1613 * Support for fma instruction in AVX on x86-64.
1614 Implemented by H.J. Lu and Ulrich Drepper.
1616 * AVX support in x86-64 auditing support in ld.so.
1617 Implemented by H.J. Lu.
1619 * STB_GNU_UNIQUE support added.
1620 Implemented by Ulrich Drepper.
1622 * Implement second fallback mode for optimized DNS lookup for even more
1623 broken environments. If two requests from the same port are not
1624 handled correctly close the socket and open a new one before sending
1625 the second request. The 'single-request-reopen' option in /etc/resolv.conf
1626 can be used to select this mode right away, instead of rediscovering the
1627 necessity is every process again.
1628 Implemented by Ulrich Drepper.
1630 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
1631 Implemented by Adam Tkac.
1633 * Optimized iconv conversions for S390x.
1634 Implemented by Andreas Krebbel.
1636 * Using condvars with PI mutexes is now more efficient due to kernel
1637 support for requeueing to PI futexes. NPTL support added for x86-64.
1638 Implemented by Ulrich Drepper.
1640 * New locales: ps_AF, my_MM
1644 * The following bugs are resolved with this release:
1646 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
1647 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
1648 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
1649 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
1650 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
1652 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
1653 Implemented by Ulrich Drepper.
1655 * New Linux interfaces: accept4, fallocate, fallocate64.
1656 Implemented by Ulrich Drepper.
1658 * Correct declarations of string function when used in C++ code. This
1659 could lead to compile errors for invalid C++ code.
1661 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
1664 * New POSIX 2008 interface: psiginfo
1665 Implemented by Ulrich Drepper.
1667 * New ISO C++1x interfaces: quick_exit, at_quick_exit
1668 Implemented by Ulrich Drepper.
1670 * Support for selecting between multiple function definitions at runtime
1671 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
1673 * The libcrypt library can now use the hash function implementations in
1674 NSS. Implemented by Ulrich Drepper.
1676 * The malloc implementation can be compiled to be less memory efficient
1677 but higher performing in multi-threaded programs.
1678 Implemented by Ulrich Drepper.
1680 * New locales: nan_TW@latin, ks_IN
1682 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
1683 Implemented by Ulrich Drepper.
1685 * Extended printf hook support. It is possible to use user-defined types
1686 and extend existing format specifiers.
1687 Implemented by Ulrich Drepper.
1689 * Handling for group shadow files has been added.
1690 Implemented by Ulrich Drepper.
1692 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
1693 servers (the case, e.g., for some people using the built-in DNS
1694 server in ADSL modems/routers). There is a once-per-process timeout
1695 in case of a broken server. To avoid it, users can run nscd or put
1696 'options single-request' in /etc/resolv.conf.
1697 Implemented by Ulrich Drepper.
1701 * The following bugs are resolved with this release:
1703 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
1704 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
1705 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
1706 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
1707 6968, 6974, 6980, 6995, 7008, 7009, 7029
1709 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
1710 up at the same time. Implemented by Ulrich Drepper.
1712 * TLS descriptors for LD and GD on x86 and x86-64.
1713 Implemented by Alexandre Oliva.
1715 * getaddrinfo now handles DCCP and UDPlite.
1716 Implemented by Ulrich Drepper.
1718 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
1719 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
1720 Implemented by Ulrich Drepper.
1722 * New implementation of memmem, strstr, and strcasestr which is O(n).
1723 Implemented by Eric Blake.
1725 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
1727 * Implement "e" option for popen to open file descriptor with the
1728 close-on-exec flag set. Implemented by Ulrich Drepper.
1730 * Implement "b" mode for fmemopen. In this mode writes writes don't
1731 implicitly add a NUL byte and seeks from the end of the buffer really
1732 use the buffer end, not the string length as the basis.
1733 Implemented by Ulrich Drepper.
1735 * Many functions, exported and internal, now atomically set the close-on-exec
1736 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
1738 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
1740 Implemented by Pravin Satpute.
1742 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
1746 * The following bugs are resolved with this release:
1748 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
1749 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
1750 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
1751 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
1752 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
1753 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
1754 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
1756 * New locales: bo_CN, bo_IN, shs_CA.
1758 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
1760 * Sorting rules for some Indian languages (Devanagari and Gujarati).
1761 Implemented by Pravin Satpute.
1763 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
1765 * nscd caches now all timeouts for DNS entries
1766 Implemented by Ulrich Drepper.
1768 * nscd is more efficient and wakes up less often.
1769 Implemented by Ulrich Drepper.
1771 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
1772 vdprintf, and obstack_vprintf.
1773 Implemented by Jakub Jelinek.
1775 * Faster memset for x86-64.
1776 Implemented by Harsha Jagasia and H.J. Lu.
1778 * Faster memcpy on x86.
1779 Implemented by Ulrich Drepper.
1781 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
1782 Implemented by Ulrich Drepper.
1784 * Faster sqrt and sqrtf implemention for some PPC variants.
1785 Implemented by Steven Munroe.
1789 * The following bugs are resolved with this release:
1791 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
1792 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
1793 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
1794 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
1795 5071, 5103, 5104, 5112, 5113, 5184, 5186
1797 * More checking functions: fread, fread_unlocked, open*, mq_open.
1798 Implemented by Jakub Jelinek and Ulrich Drepper.
1800 * Extend fortification to C++. Implemented by Jakub Jelinek.
1802 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
1803 by not recognizing 'a' as a modifier when those specs are requested.
1804 Implemented by Jakub Jelinek.
1806 * PPC optimizations to math and string functions.
1807 Implemented by Steven Munroe.
1809 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
1810 options to be passed. Implemented by Ulrich Drepper.
1812 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
1814 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
1815 Implemented by Ulrich Drepper.
1817 * Handle private futexes in the NPTL implementation.
1818 Implemented by Jakub Jelinek and Ulrich Drepper.
1820 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
1821 Implemented by Roland McGrath and Ulrich Drepper.
1823 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
1825 * SHA-256 and SHA-512 based password encryption.
1826 Implemented by Ulrich Drepper.
1828 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1829 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1832 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1833 Implemented by Ulrich Drepper.
1837 * The following bugs are resolved with this release:
1839 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1840 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1841 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1842 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1843 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1844 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1845 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1848 * New Linux interfaces: epoll_pwait, sched_getcpu.
1850 * New generic interfaces: strerror_l.
1852 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1856 * The following bugs are resolved with this release:
1858 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1859 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1860 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1861 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1862 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1863 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1864 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1865 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1866 3225, 3251, 3252, 3253, 3273
1868 * For Linux, the sorting of addresses returned by getaddrinfo now also
1869 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1870 Implemented by Ulrich Drepper.
1872 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1873 Implemented by Ulrich Drepper.
1875 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1877 * New iconv module for MIK. Contributed by Alexander Shopov.
1879 * For sites with broken group and/or passwd database, the auto-propagate
1880 option of nscd can prevent creating ID lookup entries from the results
1881 of a name lookup and vice versa. This usually is no problem but some
1882 site might have problems with the default behavior.
1883 Implemented by Ulrich Drepper.
1885 * Iterating over entire database in NIS can be slow. With the
1886 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1887 to trade time for memory. The entire database will be read at once.
1888 Implemented by Ulrich Drepper.
1890 * The interfaces introduced in RFC 3542 have been implemented by
1893 * Support for the new ELF hash table format was added by Ulrich Drepper.
1895 * Support for priority inheritance mutexes added by Jakub Jelinek and
1898 * Support for priority protected mutexes added by Jakub Jelinek.
1900 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1901 or_IN, csb_PL, fy_NL, sr_ME.
1905 * More overflow detection functions.
1907 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1908 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1910 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1911 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1912 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1913 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1914 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1915 by Masahide Washizawa.
1917 * It is now possible to install audit libraries for the dynamic linker using
1918 LD_AUDIT. Implemented by Ulrich Drepper.
1920 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1921 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1922 For a libc and libpthread that works well on Linux 2.4 kernels, we
1923 recommend using the stable 2.3 branch.
1925 * The new function open_wmemstream acts like open_memstream,
1926 but uses a wchar_t wide character buffer.
1928 * The new function ppoll is an improved version of poll, similar to pselect.
1930 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1931 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1932 renameat, unlinkat, linkat, symlinkat, readlinkat.
1934 * New Linux kernel system calls: unshare,
1935 inotify_init, inotify_add_watch, inotify_rm_watch.
1937 * The euidaccess function is now also known by the alias eaccess,
1938 for compatibility with some other systems.
1940 * Timezone data updated to 2006b version.
1944 * The following bugs are resolved with this release:
1946 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1947 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1948 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1949 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1950 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1951 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1953 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1955 * As of this release, GCC 4 can be used to compile the C Library.
1957 * Timezone data updated to 2005m version.
1961 * The following bugs are resolved with this release:
1963 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1964 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1965 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1966 777, 787, 821, 822, 823, 825
1968 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1972 * Support for RFC 3678. Real implementations exist only for Linux so far.
1973 Implemented by Ulrich Drepper.
1975 * nscd can now cache entries persistently. Expiring entries are reloaded.
1976 For speedups the cache can be shared in memory with client processes.
1977 Implemented by Ulrich Drepper.
1979 * nscd can now perform SELinux checks.
1980 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1982 * getaddrinfo queries are now cached. Canonical name lookup is performed
1984 Implemented by Ulrich Drepper.
1986 * The nothrow function attribute is used when headers are used by gcc when
1987 compiling C code. This can avoid significant amounts of exception
1990 * The malloc functions perform more error checking and are stricter when
1991 it comes to reacting on errors. The default action is to terminate
1992 the process after showing an error message. Implemented by Ulrich Drepper.
1994 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1995 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1997 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1998 namespaces using the new function dlmopen(). This feature is of course,
1999 like most other dynamic loading functionality, not available in statically
2000 linked applications. Implemented by Ulrich Drepper.
2002 * Low-overhead boundary checking variants of string and some stdio functions
2003 were added. These are to be used in conjunction with a gcc patch by
2004 Jakub Jelinek which adds calls to these functions if possible.
2005 Implemented by Jakub Jelinek and Ulrich Drepper.
2007 * Old code for several operating systems and machine architectures that
2008 have not been in working condition in a long time have been removed from
2009 the main source tree maintained by the GNU C Library's maintainers.
2010 These files are now reside in the separate `ports' source module
2011 that is usable as an add-on when building the library.
2015 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
2016 interrogate the dynamic linker, compatible with the Solaris interface.
2018 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
2019 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
2021 * getifaddrs now uses the netlink interface on Linux to get its information.
2022 Implemented by Thorsten Kukuk.
2024 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
2025 Implemented by Ulrich Drepper.
2027 * support for non-executable stacks on x86 has been added. Changes mostly
2030 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
2033 * getaddrinfo now performs destination address selection according to
2038 * Thread-safe interfaces for many functions that access locale data
2039 were added in version 2.3, but these features were omitted from NEWS.
2040 Many functions have variants with an `_l' suffix that take a `locale_t'
2041 object as a parameter rather than consulting the current locale.
2042 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
2043 create and maintain `locale_t' objects. Additionally, the new function
2044 `uselocale' sets "the current locale" (as used by functions not so
2045 parameterized) set for an individual thread. These features were added
2046 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
2048 * The functions getresuid, getresgid, setresuid, and setresgid, which
2049 have long been available on Linux, are now declared in <unistd.h>
2050 and are now also available on the Hurd.
2052 * ELF thread-local storage support (TLS) now works on x86-64.
2054 * The new dynamic string token $LIB is expanded in shared library names.
2055 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
2057 * Aldy Hernandez contributed complete software floating point support for
2058 PowerPC machines with no FPU.
2060 * fexecve is implemented on Linux.
2062 * The `btowc' function should work at least twice as fast due to
2063 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
2065 * With approriate thread add-ons cancelable functions are now implemented
2066 in libc.so as well. No need to call the function in libpthread. This
2067 change allowed to finally disable the incorrect and expensive handling
2068 of weak definition in ld.so.
2070 * Yet more PLT entries in libc.so have been removed. We finally arrived
2071 at the bare minimum. Startup times improved appropriately.
2073 * Support for the new Linux/x86 system call interface was added. The
2074 AT_SYSINFO auxiliary vector entry is recognized and handled.
2078 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
2081 * iconv (the program and the interface) now accepts empty names (excluding
2082 options like //TRANSLIT) to mean "use charset of current locale".
2084 * localedef can now transliterate characters in strings which are not in
2085 the provided charmap. The information from the input locale is used.
2087 * Prelinking support was added for ELF targets. This requires additional
2088 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
2090 * Read-only stdio streams now use mmap to speed up operation by eliminating
2091 copying and buffer underflows. To use add 'm' to the mode string of
2092 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
2094 * The malloc functions were completely rewritten by Wolfram Gloger based
2095 on Doug Lea's malloc-2.7.0.c.
2097 * Isamu Hasegawa contributed a completely new and POSIX-conformant
2098 implementation of regex.
2100 * Bruno Haible upgraded the iconv and locale implementation to support
2103 * Contents of the LC_* and LANG environment variables in the CEN style are
2104 not recognized anymore. It never was used. Change by Ulrich Drepper.
2106 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
2107 thread-local storage (TLS) ABI on some platforms.
2108 Changes by Ulrich Drepper. SH support by Kaz Kojima.
2110 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
2111 EUC-JISX0213, and TSCII.
2113 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
2114 BSD-compatible interface for getting all network interface addresses.
2115 Implementation for IPv4 by Roland McGrath.
2117 * Loading of locale data is faster due to the introduction of a locale
2118 archive. Implemented by Roland McGrath and Ulrich Drepper.
2120 * Startup times are significantly reduced by not using exported functions
2121 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
2124 * Steven Munroe contributed a port to PowerPC64/Linux.
2128 * The Hurd now uses the GNU libio implementation of stdio rather than the
2129 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
2131 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
2132 with the same behavior as the Linux system call of the same name.
2136 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
2137 128-bit long double format.
2139 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
2140 IBM1161, and IBM1162 charsets.
2142 * Andreas Jaeger contributed a port to x86-64/Linux.
2144 * Peter Bruin contributed a port to PowerPC/Hurd.
2146 * libc functions using I/O streams now can handle wide-oriented streams
2149 * optimizations in the dynamic linker. Binaries created by recent binutils
2150 versions start up quicker due to reduced time spent on relocations.
2152 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
2156 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
2157 asinh, atanh, j0 for the 128-bit long double format.
2159 * Bruno Haible updated all the code handling Unicode in some form to
2160 support Unicode 3.1.
2162 * Speed of regex for single-byte locales is back to previous levels.
2163 Patch by Isamu Hasegawa.
2165 * Alpha, SPARC, and IA-64 now also using floating stacks.
2167 * Startup time of internationalized applications greatly improved through
2168 iconv cache. Use iconvconfig to generate the cache file.
2169 Contributed by Ulrich Drepper.
2171 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
2172 severe performance problems. Patch by David Mosberger.
2174 * The Hurd port got a lot more functionality like AIO, various stdio
2175 extensions, etc. Mainly done by Roland McGrath.
2177 * mtrace can now lookup symbols in shared libraries.
2181 * Intel's IA-64 math library is largely integrated. It provides fast and
2182 accurate implementatations for most basic and standard math functions
2183 in float, double, and long double format.
2185 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
2186 and asin for the 96-bit long double format and asin, log, tan for the
2187 128-bit long double format.
2189 * The beginning of a last-bit accurate math library by IBM Haifa were added.
2190 The basic double functions exist today. Contributed by Abraham Ziv
2191 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
2192 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
2194 * An asynchronous name lookup library was added. The interface is designed
2195 after POSIX AIO. The proposal was circulated beforehand to get comments.
2196 No negative ones came in. Implemented by Ulrich Drepper.
2198 * Port to S390/64bit contributed by Martin Schwidefsky
2199 <schwidefsky@de.ibm.com>.
2201 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
2202 of functions for Linux/IA-64.
2204 * The RPC code is now thread safe. Threads can now use the same service
2205 of different services at the same time. Patch by Eric Norum
2206 <eric.norum@usask.ca> with some help by Ulrich Drepper.
2208 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
2209 family of functions for Linux/S390.
2211 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
2212 of functions for Linux/x86.
2214 * Port to Linux/CRIS contributed by Axis Communications.
2218 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
2219 we can now check for namespace violations and missing declarations. The
2220 result is that almost all headers are now Unix-compliant (as defined in
2221 the upcoming XPG6). The negative side is that some programs might need
2222 corrections, too, if they depend on the incorrect form of the headers in
2223 previous versions which defined too many symbols and included too many
2226 * regex now handles multibyte character sets correctly.
2227 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
2229 * iconv (the program) does now conform to the upcoming XPG6 and handles
2230 charmaps. Instead of the charset names the path of charmaps can be
2231 provided and the conversion happens based on this data.
2232 Contributed by Ulrich Drepper.
2234 * The locale program now provides detailed information about the installed
2239 only lists the names of the supported locales
2243 provides details such as country, language, and codeset name.
2244 Contributed by Ulrich Drepper.
2248 * The gencat program now parses the input file according to the charset
2249 selected by the LC_CTYPE category. This is important for stateful
2250 character sets. To make generating catalogs easier there is a way
2251 to overwrite the charset selected by the locale: before the first
2252 message or $ quote line the catalog can contain a line like
2254 $ codeset=ISO-8859-2
2256 to select the charset (ISO-8859-2 in this case).
2258 Implemented by Shinya Hanataka and Ulrich Drepper.
2260 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
2261 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
2262 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
2264 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
2265 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
2267 * The LANGUAGE environment variable is now ignored unless the locale is
2268 changed from the default "C" locale.
2270 * The usual bug fixes.
2274 * Greg McGary added runtime support for bounds checking using gcc's
2275 new -fbounded-pointers option. ix86 target is complete. PowerPC
2278 * Thorsten Kukuk added secure mode support to nscd.
2280 * The Berkeley db libraries have been removed.
2282 Related, the nss_db module is now in a separate package since it
2283 obviously requires a database library being available.
2285 * Wide character I/O streams implemented by Ulrich Drepper.
2287 * Functions from the extended socket API added by Ulrich Drepper.
2289 * Functions feenableexcept and fedisableexcept to control the
2290 behaviour of individual exceptions have been added by Andreas Jaeger.
2292 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
2294 * The resolver code has been updated from bind 8.2.3-T5B which supports
2295 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
2298 This change could in some situations effect backward compatibility. Since
2299 now `_res' is a thread-local instead of a global variable, modifying it
2300 in one thread does not have any effect in other threads.
2302 The resolver library was also extended to allow IPv6 as the transport
2303 protocol for the requests. This work was done by Stig Venaas.
2305 * Compatibility code for K&R C compilers has been removed from the
2306 header files. A ISO C compiler is needed to use the library
2307 (conforming to either C89 or C99 standard).
2309 * Complete rewrite of the localedef program to support multibyte character
2310 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
2311 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
2312 Implemented by Ulrich Drepper.
2314 Bruno Haible significantly improved the generation and use of the data
2315 structures for the wide character tables.
2317 * Plural handling in gettext implemented by Ulrich Drepper.
2319 * The utmp daemon has been removed.
2321 * The port to MIPS-Linux has been finished by Andreas Jaeger.
2323 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
2326 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
2328 * POSIX barriers implemented by Kaz Kylheku.
2330 * POSIX spawn function family implemented by Ulrich Drepper.
2332 * POSIX spinlocks are now available.
2334 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
2336 * the configure option --enable-kernel=X.Y.Z allows to strip out
2337 compatibility for kernel versions before X.Y.Z. This is currently only
2338 implemented for Linux.
2340 * the sockaddr_in6 structure changed. The IPv6 working group added a new
2341 field sin6_scope_id. This means that all programs using IPv6 should be
2342 recompiled. Don't expect binary compatibility with previous glibc
2345 * various conversion modules for IBM character sets contributed by
2348 * IA-64 port by Jes Sorensen and HJ Lu.
2362 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
2364 * New xdr functions are added; some rpc functions are now 64bit clean.
2366 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
2368 * Fixed known incompatibilities with glibc 2.0.
2370 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
2372 * Optimized a number of functions (especially the ELF dynamic loader).
2374 * Update timezone data files.
2376 * lots of charmaps corrections
2378 * some new locale definitions and charmaps
2383 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
2384 conform to POSIX member type requirements. Symbol versions have been
2385 adjusted as needed within the library, and for direct use by applications,
2386 but there is potential for problems if third-party libraries use
2387 struct timeval as part of their interface. This does not present
2388 a problem for X and other "essential" system libraries.
2390 * An additional locale model to support C++ Standard Library locale
2391 model and probably more was implemented by Ulrich Drepper.
2393 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
2396 * Miles Bader provided the `argp' function family to support hierachical
2397 command line argument parsing, layered on top of getopt.
2399 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
2401 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
2404 * scanf recognizes the %a and %A format for scanning floating point numbers.
2406 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
2407 information and interfaces for the available integer types.
2409 * about 130 new math functions were added to implement the ISO C9x math
2412 * the new header <complex.h> contains definitions of the complex math
2413 functions from ISO C 9X.
2415 * the new header <tgmath.h> defines generic macros to use complex or
2416 real valued functions.
2418 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
2420 * Andreas Jaeger provided a test suite for the math library.
2422 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
2424 * Ulrich Drepper added character set conversion functions (iconv).
2426 * Optimized string functions have been added.
2428 * The localedata addon is now part of glibc.
2430 * An implementation of profiling shared libraries was added by Ulrich Drepper.
2432 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
2433 daemon for NSS (nscd).
2435 Missing a better place here are some numbers on improvements. Under
2436 Linux 2.1.125 un-tar-ing the kernel sources takes
2440 using local files 12.19s 6.88s 22.91s
2442 using NIS 13.92s 8.91s 26.34s
2444 using NIS & nscd 10.37s 7.34s 25.30s
2446 using NIS+ 27.57s 30.37s 640.46s
2448 using NIS+ & nscd 10.25s 7.83s 26.51s
2450 using NIS & old nscd [1] 13.83s 8.32s 29.60s
2452 Keep in mind that non-namelookup related operations dominate above times.
2453 It was just a common complain that using NIS+ unpacking the kernel is
2456 [1] The old nscd implementation is not available anymore since it was
2457 distributed with glibc up to version 2.0.98 and thus is now replaced.
2459 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
2461 * Mark Kettenis provided a Hesiod NSS module.
2463 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
2464 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
2466 * rcmd can now handle netgroups (Dick Streefland).
2468 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
2471 * Support for the IPv6 protocol has been added to the socket API, as per the
2472 latest draft standards.
2474 * Support for Linux 2.2 has been added.
2476 * Interface changes relative to the latest 2.0.x release:
2477 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2478 addseverity NEW: Unix98
2479 alphasort64 NEW: LFS
2480 argp_err_exit_status NEW: argp, GNU ext
2481 argp_error NEW: argp, GNU ext
2482 argp_failure NEW: argp, GNU ext
2483 argp_help NEW: argp, GNU ext
2484 argp_parse NEW: argp, GNU ext
2485 argp_program_bug_address NEW: argp, GNU ext
2486 argp_program_version NEW: argp, GNU ext
2487 argp_program_version_hook NEW: argp, GNU ext
2488 argp_state_help NEW: argp, GNU ext
2489 argp_usage NEW: argp, GNU ext
2490 authdes_create NEW: Secure RPC
2491 authdes_getucred NEW: Secure RPC
2492 authdes_pk_create NEW: Secure RPC
2493 backtrace NEW: GNU ext.
2494 backtrace_symbols NEW: GNU ext.
2495 backtrace_symbols_fd NEW: GNU ext.
2497 cacosf NEW: ISO C 9x
2498 cacosh NEW: ISO C 9x
2499 cacoshf NEW: ISO C 9x
2500 cacoshl NEW: ISO C 9x
2501 cacosl NEW: ISO C 9x
2508 casinf NEW: ISO C 9x
2509 casinh NEW: ISO C 9x
2510 casinhf NEW: ISO C 9x
2511 casinhl NEW: ISO C 9x
2512 casinl NEW: ISO C 9x
2514 catanf NEW: ISO C 9x
2515 catanh NEW: ISO C 9x
2516 catanhf NEW: ISO C 9x
2517 catanhl NEW: ISO C 9x
2518 catanl NEW: ISO C 9x
2519 cbc_crypt NEW: Secure RPC
2523 ccoshf NEW: ISO C 9x
2524 ccoshl NEW: ISO C 9x
2530 cimagf NEW: ISO C 9x
2531 cimagl NEW: ISO C 9x
2532 clearerr_locked REMOVED
2533 clntunix_create NEW: sunrpc ext
2535 clog10 NEW: ISO C 9x
2536 clog10f NEW: ISO C 9x
2537 clog10l NEW: ISO C 9x
2547 cprojf NEW: ISO C 9x
2548 cprojl NEW: ISO C 9x
2550 crealf NEW: ISO C 9x
2551 creall NEW: ISO C 9x
2556 csinhf NEW: ISO C 9x
2557 csinhl NEW: ISO C 9x
2560 csqrtf NEW: ISO C 9x
2561 csqrtl NEW: ISO C 9x
2565 ctanhf NEW: ISO C 9x
2566 ctanhl NEW: ISO C 9x
2568 des_setparity NEW: Secure RPC
2569 ecb_crypt NEW: Secure RPC
2570 endutxent NEW: Unix98
2572 exp10f NEW: ISO C 9x
2573 exp10l NEW: ISO C 9x
2577 fattach NEW: STREAMS
2578 fdetach NEW: STREAMS
2582 feclearexcept NEW: ISO C 9x
2583 fegetenv NEW: ISO C 9x
2584 fegetexceptflag NEW: ISO C 9x
2585 fegetround NEW: ISO C 9x
2586 feholdexcept NEW: ISO C 9x
2588 feraiseexcept NEW: ISO C 9x
2589 ferror_locked REMOVED
2590 fesetenv NEW: ISO C 9x
2591 fesetexceptflag NEW: ISO C 9x
2592 fesetround NEW: ISO C 9x
2593 fetestexcept NEW: ISO C 9x
2594 feupdateenv NEW: ISO C 9x
2595 fflush_locked REMOVED
2599 fgets_unlocked NEW: GNU ext.
2600 fileno_locked REMOVED
2612 fputc_locked REMOVED
2613 fputs_unlocked NEW: GNU ext.
2614 fread_unlocked NEW: GNU ext.
2619 fstatvfs NEW: Unix98
2623 ftruncate64 NEW: LFS
2625 fwrite_unlocked NEW: GNU ext.
2626 gai_strerror NEW: IPv6
2630 getchar_locked REMOVED
2632 getdate_err NEW: Unix98
2633 getdate_r NEW: GNU ext.
2635 getnameinfo NEW: IPv6
2636 getnetname NEW: Secure RPC
2637 getpmsg NEW: STREAMS
2638 getpt NEW: Unix98 PTY
2639 getrlimit64 NEW: LFS
2640 getutxent NEW: Unix98
2641 getutxid NEW: Unix98
2642 getutxline NEW: Unix98
2643 glob64 NEW: GNU ext.
2644 globfree64 NEW: GNU ext.
2645 gnu_get_libc_release NEW: GNU ext.
2646 gnu_get_libc_version NEW: GNU ext.
2647 grantpt NEW: Unix98 PTY
2648 host2netname NEW: Secure RPC
2650 iconv_close NEW: iconv
2651 iconv_open NEW: iconv
2652 if_freenameindex NEW: IPv6
2653 if_indextoname NEW: IPv6
2654 if_nameindex NEW: IPv6
2655 if_nametoindex NEW: IPv6
2656 in6addr_any NEW: IPv6
2657 in6addr_loopback NEW: IPv6
2658 inet6_isipv4mapped NEW: IPv6
2659 isastream NEW: STREAMS
2660 iswblank NEW: GNU ext.
2661 key_decryptsession NEW: Secure RPC
2662 key_decryptsession_pk NEW: Secure RPC
2663 key_encryptsession NEW: Secure RPC
2664 key_encryptsession_pk NEW: Secure RPC
2665 key_gendes NEW: Secure RPC
2666 key_get_conv NEW: Secure RPC
2667 key_secretkey_is_set NEW: Secure RPC
2668 key_setnet NEW: Secure RPC
2669 key_setsecret NEW: Secure RPC
2670 llrint NEW: ISO C 9x
2671 llrintf NEW: ISO C 9x
2672 llrintl NEW: ISO C 9x
2673 llround NEW: ISO C 9x
2674 llroundf NEW: ISO C 9x
2675 llroundl NEW: ISO C 9x
2680 lrintf NEW: ISO C 9x
2681 lrintl NEW: ISO C 9x
2682 lround NEW: ISO C 9x
2683 lroundf NEW: ISO C 9x
2684 lroundl NEW: ISO C 9x
2686 makecontext NEW: Unix98
2687 mempcpy NEW: GNU ext.
2690 modify_ldt NEW: kernel
2694 nearbyint NEW: ISO C 9x
2695 nearbyintf NEW: ISO C 9x
2696 nearbyintl NEW: ISO C 9x
2697 netname2host NEW: Secure RPC
2698 netname2user NEW: Secure RPC
2699 nexttoward NEW: ISO C 9x
2700 nexttowardf NEW: ISO C 9x
2701 nexttowardl NEW: ISO C 9x
2705 passwd2des NEW: Secure RPC
2707 pow10f NEW: GNU ext.
2708 pow10l NEW: GNU ext.
2711 printf_size NEW: GNU ext.
2712 printf_size_info NEW: GNU ext.
2713 profil_counter REMOVED
2714 pthread_mutexattr_getkind_np REPLACED
2715 pthread_mutexattr_setkind_np REPLACED
2716 ptsname NEW: Unix98 PTY
2717 ptsname_r NEW: Unix98 PTY
2719 putchar_locked REMOVED
2720 putgrent NEW: GNU ext.
2722 putpmsg NEW: STREAMS
2723 pututxline NEW: Unix98
2727 readdir64_r NEW: LFS
2728 remquo NEW: ISO C 9x
2729 remquof NEW: ISO C 9x
2730 remquol NEW: ISO C 9x
2732 roundf NEW: ISO C 9x
2733 roundl NEW: ISO C 9x
2735 scalbln NEW: ISO C 9x
2736 scalblnf NEW: ISO C 9x
2737 scalblnl NEW: ISO C 9x
2739 sendfile NEW: kernel
2740 setcontext NEW: Unix98
2741 setrlimit64 NEW: LFS
2742 setutxent NEW: Unix98
2744 sigignore NEW: Unix98
2745 sigqueue NEW: POSIX.1b
2746 sigrelse NEW: Unix98
2747 sigset NEW: POSIX.1b
2748 sigtimedwait NEW: POSIX.1b
2749 sigwaitinfo NEW: POSIX.1b
2750 sincos NEW: GNU ext.
2751 sincosf NEW: GNU ext.
2752 sincosl NEW: GNU ext.
2756 strcasestr NEW: GNU ext.
2757 strtoimax NEW: ISO C 9x
2758 strtoumax NEW: ISO C 9x
2759 strverscmp NEW: GNU ext.
2760 svcauthdes_stats NEW: Secure RPC
2761 svcunix_create NEW: sunrpc etx
2762 svcunixfd_create NEW: sunrpc ext
2763 swapcontext NEW: Unix98
2764 tcgetsid NEW: Unix98 PTY
2765 tdestroy NEW: GNU ext.
2766 tgamma NEW: ISO C 9x
2767 tgammaf NEW: ISO C 9x
2768 tgammal NEW: ISO C 9x
2772 truncf NEW: ISO C 9x
2773 truncl NEW: ISO C 9x
2775 unlockpt NEW: Unix98 PTY
2776 updwtmpx NEW: Unix98
2777 user2netname NEW: Secure RPC
2778 utmpxname NEW: Unix98
2779 versionsort NEW: GNU ext.
2780 versionsort64 NEW: GNU ext.
2782 wcscasecmp NEW: GNU ext.
2783 wcsncasecmp NEW: GNU ext.
2784 wcsnlen NEW: GNU ext.
2785 wcstoimax NEW: ISO C 9x
2786 wcstoll NEW: ISO C 9x
2787 wcstoull NEW: ISO C 9x
2788 wcstoumax NEW: ISO C 9x
2790 wordexp NEW: POSIX.2
2791 wordfree NEW: POSIX.2
2792 write_profiling REMOVED
2793 xdecrypt NEW: Secure RPC
2794 xdr_authdes_cred NEW: Secure RPC
2795 xdr_authdes_verf NEW: Secure RPC
2796 xdr_cryptkeyarg NEW: Secure RPC
2797 xdr_cryptkeyarg2 NEW: Secure RPC
2798 xdr_cryptkeyres NEW: Secure RPC
2799 xdr_getcredres NEW: Secure RPC
2800 xdr_key_netstarg NEW: Secure RPC
2801 xdr_key_netstres NEW: Secure RPC
2802 xdr_keybuf NEW: Secure RPC
2803 xdr_keystatus NEW: Secure RPC
2804 xdr_netnamestr NEW: Secure RPC
2805 xdr_sizeof NEW: Secure RPC
2806 xdr_unixcred NEW: sunrpc ext
2807 xencrypt NEW: Secure RPC
2808 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2819 * inet_ntoa is thread-safe
2821 * updwtmp is moved from libutil to libc
2823 * rewrite of cbrt function
2825 * update of timezone data
2839 * add atoll function
2841 * fix complex problems in Berkeley DB code
2843 * fix math functions
2847 * fixed lots of header problems (especially Linux/GNU specific)
2849 * dynamic loader preserves all registers
2851 * Roland McGrath provided support for handling of auxiliary objects in
2852 the ELF dynamic loader.
2854 * support for parallel builds is improved
2858 * GNU extensions are no longer declared by default. To enable them you
2859 must define the macro `_GNU_SOURCE' in your program or compile with
2862 * The library has changed from using GNU ld symbol aliases to using weak
2863 symbols where available. The ELF object file format supports weak
2864 symbols; GNU ld also supports weak symbols in the a.out format. (There
2865 is also now support for other GNU ld extensions in ELF. Use the
2866 `--with-elf' option to configure to indicate you have ELF, and
2867 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2868 of many files which contained only symbol aliases, reducing the size of
2869 the source and the compiled library; many other files were renamed to
2870 less cryptic names previously occupied by the symbol alias files.
2871 There is a new header file <elf.h> for programs which operate on
2872 files in the ELF format.
2874 * Converted to Autoconf version 2, so `configure' has more options.
2875 Run `configure --help' to see the details.
2877 * The library can now be configured to build profiling, highly-optimized
2878 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2879 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2880 `configure' enable building these extra libraries. The shared library is
2881 built by default when using both ELF and GNU ld. When shared libraries
2882 are enabled, the new library `-ldl' is available for arbitrary run-time
2883 loading of shared objects; its interface is defined in <dlfcn.h>. The
2884 new header file <link.h> gives access to the internals of the run-time
2885 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2886 application of same name on other systems and it provides information
2887 about dynamically linked binaries.
2889 * The C library now provides the run-time support code for profiling
2890 executables compiled with `-pg'. Programs can control the profiling code
2891 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2892 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2893 the support for this file format was contributed by David Mosberger-Tang.
2895 * The math code has been replaced with a math library based on fdlibm from
2896 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2897 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2898 functions. The math functions now reside in a separate library, so
2899 programs using them will need to use `-lm' their linking commands.
2901 * John C. Bowman contributed optimized ix87 assembler inline functions.
2903 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2904 mechanism similar to that found in Solaris 2. This is now used for the
2905 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2906 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2907 file controls what services are used for each individual database. This
2908 works by loading shared libraries with names specified in `nsswitch.conf',
2909 so service modules can be changed or added at any time without even
2910 relinking any program. Currently there are the file, db, and NIS based
2911 NSS services available.
2913 * The new functions `strtoq' and `strtouq' parse integer values from
2914 strings, like `strtol' and `strtoul', but they return `long long int' and
2915 `unsigned long long int' values, respectively (64-bit quantities).
2917 * The new functions `strtof' and `strtold' parse floating-point values from
2918 strings, like `strtod', but they return `float' and `long double' values,
2919 respectively (on some machines `double' and `long double' are the same).
2921 * Ulrich Drepper has contributed new implementations of the floating-point
2922 printing and reading code used in the `printf' family of functions and
2923 `strtod', `strtof', and `strtold'. These new functions are perfectly
2924 accurate, and much faster than the old ones.
2926 * The implementation of the POSIX locale model was completely rewritten by
2927 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2928 to compile the POSIX locale definition.
2930 * The former dummy implementations of the strcoll and strxfrm function are
2931 now replaced by fully functional code contributed by Ulrich Drepper. The
2932 collation information comes from the POSIX locale definitions.
2934 * The new header <langinfo.h> defines an interface for accessing
2935 various locale-dependent data (using the locale chosen with `setlocale').
2937 * Ulrich Drepper has contributed a new suite of functions for operation on
2938 wide-character and multibyte-character strings, in <wchar.h>;
2939 and classification and case conversion of wide characters, in <wctype.h>.
2940 These new functions are conforming to the ISO C, Amendement 1 specification.
2942 * There is now a second implementation of the standard I/O library available.
2943 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2944 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2946 * You can now use positional parameter specifications in format strings
2947 for the `printf' and `scanf' families of functions. For example,
2948 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2949 ``Number 6, Mr Jones''. This is mainly useful when providing different
2950 format strings for different languages, whose grammars may dictate
2951 different orderings of the values being printed. To support this
2952 feature, the interface for `register_printf_handler' has changed; see
2953 the header file <printf.h> for details.
2955 * The `printf' and `scanf' families of functions now understand a new
2956 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2957 to group numbers as indicated by the locale; for `scanf' and friends, this
2958 says to accept as valid only a number with all the proper grouping
2959 separators in the right places. In the default "C" locale, numbers are
2960 not grouped; but locales for specific countries will define the usual
2961 conventions (i.e. separate thousands with `,' in the US locale).
2963 * The pgrp functions have been regularized, slightly incompatibly but much
2964 less confusingly. The core functions are now `getpgid' and `setpgid',
2965 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2966 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2967 provided for compatibility. There is no longer an incompatible `getpgrp'
2968 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2970 * The new header file <fts.h> and suite of functions simplify programs that
2971 operate on directory trees. This code comes from 4.4 BSD.
2973 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2974 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2975 NSS scheme used in glibc.
2977 * There is a new malloc debugging hook `__memalign_hook'.
2979 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2980 `unsigned int' in <sys/types.h>. These are for compatibility only and
2981 their use is discouraged.
2983 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2984 done differently, so that it works even without GNU ld.
2986 * New function `euidaccess' checks allowed access to a file like `access',
2987 but using the effective IDs instead of the real IDs.
2989 * The time zone data files have been updated for the latest and greatest
2990 local time conventions of the countries of the world.
2992 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2995 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2996 for formatting floating-point numbers. They are provided only for
2997 compatibility; new programs should use `sprintf' instead. There are
2998 also equivalent function for the `long double' floating-point type and
2999 all functions also exist in a reentrant form.
3001 * The new auxiliary library `-lutil' from 4.4 BSD contains various
3002 functions for maintaining the login-record files (primarily of use to
3003 system programs such as `login'), and convenient functions for
3004 allocating and initializing a pseudo-terminal (pty) device.
3006 * Ulrich Drepper has contributed new support for System V style
3007 shared memory and IPC on systems that support it.
3009 * Ulrich Drepper has contributed several miscellaneous new functions found
3010 in System V: The `hsearch' family of functions provide an effective
3011 implementation of hash tables; `a64l' and `l64a' provide a very simple
3012 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
3015 * Ulrich Drepper has contributed new reentrant counterparts for the
3016 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
3018 * Ulrich Drepper has contributed new, highly-optimized versions of several
3019 string functions for the i486/Pentium family of processors.
3021 * Ulrich Drepper has updated the Linux-specific code, based largely
3022 on work done in Hongjiu Lu's version of GNU libc for Linux.
3023 The GNU library now supports Linux versions 2.0.10 and later,
3024 using the ELF object file format (i[3456]86-*-linux).
3026 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
3028 * David Mosberger-Tang and Richard Henderson have ported the C library
3029 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
3030 dynamic linking support for ELF/Alpha.
3032 * Richard Henderson contributed several Alpha optimized assembler function
3033 for arithmetic and string handling.
3035 * Ulrich Drepper has contributed a new set of message catalog functions to
3036 support multiple languages using the <libintl.h> interface, for use with
3037 his new package GNU gettext. Translation volunteers have contributed
3038 catalogs of the library's messages in Spanish, German, and Korean.
3040 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
3041 program and the `catgets' function for reading the catalog files it
3042 creates. (The <libintl.h> interface is preferred; we include the
3043 <nl_types.h> interface using `catgets' only for source compatibility with
3044 programs already written to use it.)
3046 * New header file <values.h> gives SVID-compatible names for <limits.h>
3049 * Various new macros, declarations, and small header files for compatibility
3052 * New function `group_member' is a convenient way to check if a process has
3053 a given effective group ID.
3055 * When using GCC 2.7 and later, the socket functions are now declared in a
3056 special way so that passing an argument of type `struct sockaddr_in *',
3057 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
3058 `struct sockaddr *' type, does not generate a type-clash warning.
3060 * New function `error' declared in header file <error.h> is a convenient
3061 function for printing error messages and optionally exiting; this is the
3062 canonical function used in GNU programs. The new functions `err', `warn',
3063 and friends in header file <err.h> are the canonical 4.4 BSD interface for
3064 doing the same thing.
3066 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
3067 POSIX.2 `glob' function to do ~ and {...} expansion.
3069 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
3070 `clearenv' which is used in POSIX.9 is also available.
3072 * New function `getsid' returns session ID number on systems that support it.
3074 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
3075 files <db.h> and <mpool.h> provide a rich set of functions for several
3076 types of simple databases stored in memory and in files, and <ndbm.h> is
3077 an old `ndbm'-compatible interface using the `db' functions. Link with
3078 `-ldb' to get these functions.
3080 * New macro `strdupa' copies a string like `strdup', but uses local stack
3081 space from `alloca' instead of dynamic heap space from `malloc'.
3083 * New function `strnlen' is like `strlen' but searches only a given maximum
3084 number of characters for the null terminator. `stpncpy', `strndup' and
3085 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
3088 * New function `statfs' in header <sys/statfs.h>.
3090 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
3091 provide convenient functions for operating on blocks of null-terminated
3094 * A new suite of functions in <utmp.h> handle all the details of reading
3095 and writing the utmp file.
3097 * An implementation of the NIS/YP(tm) based NSS service was contributed by
3100 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
3101 completely POSIX compliant and also implemented the extended functionality
3102 to handle alternate digit representation and alternate era date formats.
3104 * Ulrich Drepper provided an implementation of the `strptime' function
3105 defined in XPG4.2 which transforms a string into a `struct tm' value.
3107 * Paul Eggert provided the tzselect shell script as part of the timezone
3108 code. The shell script makes it easy to select the correct timezone
3111 * The implementation of the malloc family of functions is completely replaced
3112 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
3113 The implementation uses the mmap function (if available) and it is
3114 optimized for the use in multi threaded programs.
3116 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
3117 functions. This new functionality is usable by specifying a special
3118 salt string and it is compatible with implementation on *BSD systems.
3120 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
3121 `getsubopt' to handle second level command line options, `bsd_signal'
3122 to access BSD style `signal' functionality, the obsolete `regexp' style
3125 * the `lchown' function is available on system which support this
3128 * The implementation of the shadow password handling function was contributed
3131 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
3133 * POSIX.1g support was added. The <sys/select.h> header is available,
3134 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
3135 implementation of `getaddrinfo'.
3139 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
3141 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
3142 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
3144 * The new function `daemon' from 4.4 BSD is useful for server programs that
3145 want to put themselves in the background.
3147 * Joel Sherrill has contributed support for several standalone boards that
3148 run without an operating system.
3150 * `printf', `scanf' and friends now accept a `q' type modifier for long
3151 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
3153 * All of the code taken from BSD (notably most of the math and networking
3154 routines) has been updated from the BSD 4.4-Lite release.
3156 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
3158 * The new functions `getdomainname' and `setdomainname' fetch or change the
3159 YP/NIS domain name. These are system calls which exist on systems which
3162 * The time zone data files have been updated for the latest international
3165 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
3166 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
3170 * The C library now includes support for Sun RPC, from Sun's free
3171 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
3172 are included. (There is still no support for YP.)
3174 * Tom Quinn has contributed a port of the C library to SGI machines running
3175 Irix 4 (mips-sgi-irix4).
3177 * The new `lockf' function is a simplified interface to the locking
3178 facilities of `fcntl', included for compatibility.
3180 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
3182 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
3184 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
3187 * The error message printed by `assert' for a failed assertion now includes
3188 the name of the program (if using GNU ld) and the name of the calling
3189 function (with versions of GCC that support this).
3191 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
3193 * The library now includes the <sys/mman.h> header file and memory
3194 management functions `mmap', `munmap', `mprotect', `msync', and
3195 `madvise', on systems that support those facilities.
3197 * The interface for `mcheck' has changed slightly: the function called to
3198 abort the program when an allocation inconsistency is detected now takes
3199 an argument that indicates the type of failure. The new function
3200 `mprobe' lets you request a consistency check for a particular block at
3201 any time (checks are normally done only when you call `free' or `realloc'
3204 * It is now possible to easily cross-compile the C library, building on one
3205 system a library to run on another machine and/or operating system. All
3206 you need to do is set the variable `HOST_CC' in `configparms' to the
3207 native compiler for programs to run on the machine you are building on (a
3208 few generator programs are used on Unix systems); set `CC' to the
3211 * The new function `fexecve' (only implemented on the GNU system) executes
3212 a program file given a file descriptor already open on the file.
3216 * Brendan Kehoe has contributed most of a port to the DEC Alpha
3217 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
3219 * You can set the variable `libprefix' in `configparms' to specify a prefix
3220 to be prepended to installed library files; this makes it easy to install
3221 the GNU C library to be linked as `-lgnuc' or whatever.
3223 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
3224 copies a limited number of characters from a string, and returns the
3225 address of the last character written.
3227 * You no longer need to check for whether the installed `stddef.h' is
3228 compatible with the GNU C library. configure now checks for you.
3230 * You can now define a per-stream `fileno' function to convert the
3231 stream's cookie into an integral file descriptor.
3233 * ``malloc (0)'' no longer returns a null pointer. Instead, it
3234 allocates zero bytes of storage, and returns a unique pointer which
3235 you can pass to `realloc' or `free'. The behavior is undefined if
3236 you dereference this pointer.
3238 * The C library now runs on Sony NEWS m68k machines running either
3239 NewsOS 3 or NewsOS 4.
3241 * The new `syscall' function is a system-dependent primitive function
3242 for invoking system calls. It has the canonical behavior on Unix
3243 systems, including unreliable return values for some calls (such as
3244 `pipe', `fork' and `getppid').
3246 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
3247 to `EAGAIN', which is the preferred name. On systems whose kernels
3248 use two distinct codes, the C library now translates EWOULDBLOCK to
3249 EAGAIN in every system call function.
3253 * The GNU C Library Reference Manual is now distributed with the library.
3254 `make dvi' will produce a DVI file of the printed manual.
3255 `make info' will produce Info files that you can read on line using C-h i
3256 in Emacs or the `info' program.
3257 Please send comments on the manual to bug-glibc-manual@gnu.org.
3259 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
3261 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
3263 * Jason Merrill has contributed a port to the Sequent Symmetry running
3264 Dynix version 3 (i386-sequent-dynix).
3266 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
3267 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
3269 * New function `memory_warnings' lets you arrange to get warnings when
3270 malloc is running out of memory to allocate, like Emacs gives you.
3272 * The C library now contains the relocating allocator used in Emacs 19 for
3273 its editing buffers. This allocator (ralloc) minimizes allocation
3274 overhead and fragmentation by moving allocated regions around whenever it
3275 needs to. You always refer to a ralloc'd region with a "handle" (a
3276 pointer to a pointer--an object of type `void **').
3278 * There is a new `printf' format: `%m' gives you the string corresponding
3279 to the error code in `errno'.
3281 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
3282 or `%[' conversion, but instead of filling in a fixed-sized buffer you
3283 pass, the `a' modifier says to fill in a `char **' you pass with a
3286 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
3287 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
3288 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
3290 * `mkstemp' is a traditional Unix function to atomically create and open a
3291 uniquely-named temporary file.
3295 * The standard location for the file that says what the local timezone is
3296 has changed again. It is now `/usr/local/etc/localtime' (or more
3297 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
3299 * The distribution no longer contains any files with names longer than 14
3302 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
3303 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
3305 * New functions `ttyslot' and `syslog' from 4.4 BSD.
3309 * The configuration process has changed quite a bit. The `configure'
3310 script is now used just like the configuration scripts for other GNU
3311 packages. The `sysdeps' directory hierarchy is much rearranged.
3312 The file `INSTALL' explains the new scheme in detail.
3314 * The header files no longer need to be processed into ANSI C and
3315 traditional C versions. There is just one set of files to install, and
3316 it will work with ANSI or old C compilers (including `gcc -traditional').
3318 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
3319 MIPS DECStation running Ultrix 4.
3321 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
3322 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
3323 made itself into a shared library.
3325 * Yet further improved support for the i386, running 4.3 BSD-like systems
3326 (such as Mach 3 with the Unix single-server), or System V.
3328 * New function `strncasecmp' to do case-insensitive string comparison
3329 with limited length.
3331 * New function `strsep' is a reentrant alternative to `strtok'.
3333 * New functions `scandir' and `alphasort' for searching directories.
3335 * New function `setenv' is a better interface to `putenv'.
3337 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
3338 function for traversing a directory tree.
3340 * The GNU obstack package is now also part of the C library.
3341 The new function `open_obstack_stream' creates a stdio stream that
3342 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
3343 formatted output directly to an obstack.
3345 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
3346 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
3348 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
3350 * The new functions `strfry' and `memfrob' do mysterious and wonderful
3351 things to your strings.
3353 * There are some new test programs: test-fseek, testmb, and testrand.
3355 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
3356 These ports are not finished, but are a good starting place for really
3357 supporting those systems.
3359 * `/etc/localtime' is now the standard location for the file that says what
3360 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
3361 This follows the general principle that `/etc' is the place for all local
3362 configuration files.
3364 * The C library header files now use `extern "C"' when used by the C++
3365 compiler, so the C library should now work with C++ code.
3367 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
3368 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
3371 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
3372 function which uses the `merge sort' algorithm, and is said to be
3373 significantly faster than the old GNU `qsort' function. Merge sort is
3374 now the standard `qsort' function. The new algorithm can require a lot
3375 of temporary storage; so, the old sorting function is called when the
3376 required storage is not available.
3378 * The C library now includes Michael Glad's Ultra Fast Crypt, which
3379 provides the Unix `crypt' function, plus some other entry points.
3381 * The code and header files taken from 4.4 BSD have been updated with the
3382 latest files released from Berkeley.
3384 ----------------------------------------------------------------------
3385 Copyright information:
3387 Copyright (C) 1992-2016 Free Software Foundation, Inc.
3389 Permission is granted to anyone to make or distribute verbatim copies
3390 of this document as received, in any medium, provided that the
3391 copyright notice and this permission notice are preserved,
3392 thus giving the recipient permission to redistribute in turn.
3394 Permission is granted to distribute modified versions
3395 of this document, or of portions of it,
3396 under the above conditions, provided also that they
3397 carry prominent notices stating who last changed them.
3400 version-control: never