1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2016 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
11 24731-2:2010, is supported to enable declarations of functions from that
12 TR. Note that not all functions from that TR are supported by the GNU C
15 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
16 18661-1:2014, is supported to enable declarations of functions and macros
17 from that TS. Note that most features from that TS are not supported by
20 Security related changes:
22 [Add security related changes here]
24 The following bugs are resolved with this release:
26 [The release manager will add the list generated by
27 scripts/list-fixed-bugs.py just before the release.]
31 * The minimum Linux kernel version that this version of the GNU C Library
32 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
33 kernel version 2.6.32 or later suffices (on architectures that already
34 required kernel versions more recent than 3.2, those requirements remain
35 unchanged). Linux 3.2 or later kernel headers are required on all
38 * The pap_AN locale has been deleted. This has been deprecated for a long
39 time. It has been replaced by pap_AW & pap_CW, both of which have long
40 been included in previous releases.
42 * The readdir_r and readdir64_r functions have been deprecated. It is
43 recommended to use readdir and readdir64 instead.
45 * The type “union wait” has been removed. It was deprecated in the early
46 1990s and never part of POSIX. Application code should use the int type
47 instead of “union wait”.
49 * A new NSS action is added to facilitate large distributed system
50 administration. The action, MERGE, allows remote user stores like LDAP
51 to be merged into local user stores like /etc/groups in order to provide
52 easy to use, updated, and managed sets of merged credentials. The new
53 action can be used by configuring it in /etc/nsswitch.conf:
54 group: files [SUCCESS=merge] nis
55 Implemented by Stephen Gallagher (Red Hat).
57 * The deprecated __malloc_initialize_hook variable has been removed from the
60 * The long unused localedef --old-style option has been removed. It hasn't
61 done anything in over 16 years. Scripts using this option can safely
64 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
65 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
66 return the next representable value in the direction of positive infinity
67 and the nextdown functions return the next representable value in the
68 direction of negative infinity. These are currently enabled as GNU
71 Security related changes:
73 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
74 could result in a stack overflow when getnetbyname was called with an
75 overly long name. (CVE-2016-3075)
77 * Previously, getaddrinfo copied large amounts of address data to the stack,
78 even after the fix for CVE-2013-4458 has been applied, potentially
79 resulting in a stack overflow. getaddrinfo now uses a heap allocation
80 instead. Reported by Michael Petlan. (CVE-2016-3706)
82 * The glob function suffered from a stack-based buffer overflow when it was
83 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
84 Reported by Alexander Cherepanov. (CVE-2016-1234)
86 * The Sun RPC UDP client could exhaust all available stack space when
87 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
88 alloca plugin for GCC. (CVE-2016-4429)
90 * The IPv6 name server management code in libresolv could result in a memory
91 leak for each thread which is created, performs a failing naming lookup,
92 and exits. Over time, this could result in a denial of service due to
93 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
95 The following bugs are resolved with this release:
97 [1170] localedata: ne_NP: update Nepali locale definition file
98 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
100 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
101 [6796] math: fdim() does not set errno on overflow
102 [10354] libc: posix_spawn should use vfork() in more cases than presently
103 [11213] localedata: localedata: add copyright disclaimer to locale files
104 [12143] localedata: chr_US: new Cherokee locale
105 [12450] localedata: sgs_LT: new locale
106 [12676] localedata: ln_CD: new locale
107 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
109 [13304] math: fma, fmaf, fmal produce wrong results
110 [14259] build: --localedir arg to configure is ignored
111 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
112 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
113 [14934] localedata: es_CL: wrong first weekday chilean locale
114 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
116 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
118 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
119 [15368] nptl: raise() is not async-signal-safe
120 [15479] math: ceil, floor, round and trunc raise inexact exception
121 [15578] localedata: kk_KZ: various updates
122 [16003] localedata: pap_AN: punt old locale
123 [16137] localedata: iw_IL: punt old locale
124 [16190] localedata: eo: new esperanto locale
125 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
126 [16742] malloc: race condition: pthread_atfork() called before first
127 malloc() results in unexpected locking behaviour/deadlocks
128 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
130 [16983] localedata: postal_fmt does not allow %l and %n modifiers
131 [17565] localedata: pt_PT: wrong (work-)week start
132 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
133 [17950] build: Build fails with -msse
134 [18205] localedata: be_BY*: wrong first_weekday and first_workday
135 [18433] libc: posix_spawn does not return correctly upon failure to
137 [18453] localedata: charmaps/IBM875: incorrect codes
138 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
140 [18896] localedata: he_IL: improvements for currency
141 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
143 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
145 [19056] libc: Deprecate readdir_r
146 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
148 [19198] localedata: nl_NL: small improvements for Dutch locales
149 [19257] network: Per-thread memory leak in __res_vinit with IPv6
150 nameservers (CVE-2016-5417)
151 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
153 [19400] locale: Language missing in "iso-639.def", trivial fix in
155 [19431] malloc: Deadlock between fflush, getdelim, and fork
156 [19505] libc: Incorrect file descriptor validity checks in
157 posix_spawn_file_actions_add{open,close,dup2}
158 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
160 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
161 `intl/{gettextP,loadinfo}.h'
162 [19534] libc: execle, execlp may use malloc
163 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
164 [19573] network: res_nclose and __res_maybe_init disagree about name
165 server initialization, breaking Hesiod
166 [19575] localedata: Status of GB18030 tables
167 [19581] localedata: sr_* date_fmt string contains additional newline
168 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
170 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
171 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
172 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
173 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
175 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
177 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
179 [19610] dynamic-link: ldconfig -X removes stale symbolic links
180 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
181 [19633] locale: strfmon_l applies global locale to number formatting
182 [19642] network: Memory leak in getnameinfo
183 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
184 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
186 [19654] math: [x86_64] Need testcase for BZ #19590 fix
187 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
189 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
190 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
192 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
194 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
196 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
197 pointers and lengths in error-case.
198 [19727] locale: Converting from/to UTF-xx with iconv() does not always
199 report errors on UTF-16 surrogates values.
200 [19755] nscd: nscd assertion failure in gc
201 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
202 [19759] libc: mempcpy shouldn't be inlined
203 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
204 [19765] libc: s390 needs an optimized mempcpy
205 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
206 NAME_MAX limit assumption (CVE-2016-1234)
207 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
208 [19787] network: Missing and incorrect truncation checks in getnameinfo
209 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
211 [19791] network: Assertion failure in res_query.c with un-connectable name
213 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
214 [19822] math: libm.so install clobbers old version
215 [19825] network: resolv: send_vc can return uninitialized data in second
216 response to getaddrinfo
217 [19830] network: nss_dns: should check RDATA length against buffer length
218 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
219 confronted with A/AAAA records of invalid size
220 [19837] nss: nss_db: No retries for some long lines with a larger buffer
221 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
222 [19853] stdio: Printing IBM long double in decimal with high precision is
224 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
225 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
226 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
228 [19865] network: Assertion failure or memory leak in
229 _nss_dns_getcanonname_r
230 [19868] network: nss_dns: netent code does not skip over non-PTR records
231 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
233 [19881] string: Improve x86-64 memset
234 [19907] string: Incorrect memcpy tests
235 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
237 [19925] libc: termios.h XCASE namespace
238 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
239 [19929] libc: limits.h NL_NMAX namespace
240 [19931] stdio: Memory leak in vfprintf
241 [19957] libc: clone(CLONE_VM) access invalid parent memory
242 [19963] localedata: en_IL: New locale
243 [19989] stdio: stdio.h cuserid namespace
244 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
246 [19996] locale: langinfo.h nl_langinfo_l namespace
247 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
248 [20010] network: getaddrinfo: Stack overflow in hostent translation
250 [20012] stdio: libio: fmemopen append mode failure
251 [20014] stdio: stdio.h namespace for pre-threads POSIX
252 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
253 [20023] libc: fcntl.h timespec namespace
254 [20024] math: [x86_64] vectorized sincos trashes the stack
255 [20031] network: nss_hesiod: Heap overflow in get_txt_records
256 [20041] time: sys/time.h timespec namespace
257 [20043] libc: unistd.h missing cuserid for UNIX98 and before
258 [20044] libc: unistd.h missing pthread_atfork for UNIX98
259 [20051] libc: ttyslot in wrong header under wrong conditions
260 [20054] libc: gethostname not declared for XPG4
261 [20055] libc: termios.h missing tcgetsid for XPG4
262 [20072] dynamic-link: x86 init_cpu_features is called twice in static
264 [20073] libc: sys/stat.h fchmod namespace
265 [20074] libc: stdlib.h rand_r namespace
266 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
267 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
269 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
270 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
272 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
273 [20119] libc: Wrong mask for processors level type from CPUID
274 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
275 AS not supporting AVX512
276 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
278 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
279 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
281 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
282 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
283 [20178] libc: posix_spawn{p} should not call exit
284 [20191] stdio: libio: vtables hardening
285 [20195] string: FMA4 detection requires CPUID execution with register
287 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
288 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
290 [20212] math: acos (sNaN) returns sNaN
291 [20213] math: asin (sNaN) returns sNaN
292 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
293 [20218] math: [i386] asinhl (sNaN) returns sNaN
294 [20219] math: [i386] atanhl (sNaN) returns sNaN
295 [20222] stdio: fopencookie: Mangle function pointers
296 [20224] math: [i386] cbrtl (sNaN) returns sNaN
297 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
298 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
300 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
301 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
302 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
303 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
304 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
305 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
306 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
307 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
308 [20240] math: modf (sNaN) returns sNaN
309 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
310 [20250] math: frexp (sNaN) returns sNaN
311 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
312 [20255] math: [i386] fdim, fdimf return with excess range and precision /
314 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
315 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
316 subscript is below array bounds [-Werror=array-bounds]
317 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
318 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
320 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
321 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
323 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
325 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
326 [20316] localedata: id_ID: Februari instead of Pebruari
327 [20327] string: POWER8 strcasecmp returns incorrect result
328 [20347] math: Failure: Test: j0_downward (0xap+0)
329 [20348] libc: FAIL: misc/tst-preadvwritev64
330 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
331 [20350] libc: There is no test for p{read,write}64
332 [20357] math: Incorrect cos result for 1.5174239687223976
333 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
337 * Unicode 8.0.0 Support: Character encoding, character type info, and
338 transliteration tables are all updated to Unicode 8.0.0, using new
339 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
340 These updates cause user visible changes, such as the fixes for bugs
341 89, 16061, and 18568.
343 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
344 kernel-internal CPU set size. This means that requests that change the
345 CPU affinity which failed before (for example, an all-ones CPU mask) will
346 now succeed. Applications that need to determine the effective CPU
347 affinities need to call sched_getaffinity or pthread_getaffinity_np after
348 setting it because the kernel can adjust it (and the previous size check
349 would not detect this in the majority of cases).
351 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
352 the following new symbols are used: fts64_children, fts64_close,
353 fts64_open, fts64_read and fts64_set.
355 * getaddrinfo now detects certain invalid responses on an internal netlink
356 socket. If such responses are received, an affected process will
357 terminate with an error message of "Unexpected error <number> on netlink
358 descriptor <number>" or "Unexpected netlink response of size <number> on
359 descriptor <number>". The most likely cause for these errors is a
360 multi-threaded application which erroneously closes and reuses the netlink
361 file descriptor while it is used by getaddrinfo.
363 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
364 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
365 unnecessary serialization of memory allocation requests across threads.
366 The defect is now corrected. Users should see a substantial increase in
367 the concurent throughput of allocation requests for applications which
368 trigger this bug. Affected applications typically create and
369 destroy threads frequently. (Bug 19048 was reported and analyzed by
372 * There is now a --disable-timezone-tools configure option for disabling the
373 building and installing of the timezone related utilities (zic, zdump, and
374 tzselect). This is useful for people who build the timezone data and code
375 independent of the GNU C Library.
377 * The obsolete header <regexp.h> has been removed. Programs that require
378 this header must be updated to use <regex.h> instead.
380 * The obsolete functions bdflush, create_module, get_kernel_syms,
381 query_module and uselib are no longer available to newly linked binaries;
382 the header <sys/kdaemon.h> has been removed. These functions and header
383 were specific to systems using the Linux kernel and could not usefully be
384 used with the GNU C Library on systems with version 2.6 or later of the
387 * Optimized string, wcsmbs and memory functions for IBM z13.
388 Implemented by Stefan Liebler.
390 * Newly linked programs that define a variable called signgam will no longer
391 have it set by the lgamma, lgammaf and lgammal functions. Programs that
392 require signgam to be set by those functions must ensure that they use the
393 variable provided by the GNU C Library and declared in <math.h>, without
394 defining their own copy.
396 * The minimum GCC version that can be used to build this version of the GNU
397 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
398 still be used to compile programs using the GNU C Library.
400 Security related changes:
402 * An out-of-bounds value in a broken-out struct tm argument to strftime no
403 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
405 * The LD_POINTER_GUARD environment variable can no longer be used to disable
406 the pointer guard feature. It is always enabled. Previously,
407 LD_POINTER_GUARD could be used to disable security hardening in binaries
408 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
411 * An integer overflow in hcreate and hcreate_r could lead to an
412 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
414 * The catopen function no longer has unbounded stack usage. Reported by
417 * The nan, nanf and nanl functions no longer have unbounded stack usage
418 depending on the length of the string passed as an argument to the
419 functions. Reported by Joseph Myers. (CVE-2014-9761)
421 * A stack-based buffer overflow was found in libresolv when invoked from
422 libnss_dns, allowing specially crafted DNS responses to seize control
423 of execution flow in the DNS client. The buffer overflow occurs in
424 the functions send_dg (send datagram) and send_vc (send TCP) for the
425 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
426 family. The use of AF_UNSPEC triggers the low-level resolver code to
427 send out two parallel queries for A and AAAA. A mismanagement of the
428 buffers used for those queries could result in the response of a query
429 writing beyond the alloca allocated buffer created by
430 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
431 the overflow. Thanks to the Google Security Team and Red Hat for
432 reporting the security impact of this issue, and Robert Holiday of
433 Ciena for reporting the related bug 18665. (CVE-2015-7547)
435 The following bugs are resolved with this release:
437 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
438 [887] math: Math library function "logb" and "nextafter" inconsistent
439 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
440 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
441 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
442 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
444 [4404] localedata: German translation of "Alarm clock" is misleading
445 [6799] math: nextafter() and nexttoward() doen't set errno on
446 overflow/underflow errors
447 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
449 [10432] nis: _nss_nis_setnetgrent assertion failure
450 [11460] libc: fts has no LFS support
451 [12926] network: getaddrinfo()/make_request() may spin forever
452 [13065] nptl: Race condition in pthread barriers
453 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
454 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
456 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
457 [14912] libc: Rename non-installed bits/*.h headers
458 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
459 [15367] math: Let gcc use __builtin_isinf
460 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
461 [15421] math: lgamma wrongly sets signgam for ISO C
462 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
463 FE_INVALID with argument out of range
464 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
466 [15786] dynamic-link: ifunc resolver functions can smash function
468 [15918] math: Unnecessary check for equality in hypotf()
469 [16061] localedata: Review / update transliteration data
470 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
472 [16141] time: strptime %z offset restriction
473 [16171] math: drem should be alias of remainder
474 [16296] math: fegetround is pure?
475 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
476 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
478 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
479 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
481 [16422] math: [powerpc] math-float, math-double failing llrint tests with
482 "Exception "Inexact" set" on ppc32
483 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
484 [16517] math: Missing underflow exception from tanf/tan/tanl
485 [16519] math: Missing underflow exception from sinhf
486 [16520] math: Missing underflow exception from tanhf
487 [16521] math: Missing underflow exception from exp2
488 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
490 [16734] stdio: fopen calls mmap to allocate its buffer
491 [16961] math: nan function incorrect handling of bad sequences
492 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
493 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
494 [16985] locale: localedef: confusing error message when opening output
496 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
497 [17197] locale: Redundant shift character in iconv conversion output at
499 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
500 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
501 [17250] dynamic-link: static linking breaks nss loading
502 (getaddrinfo/getpwnam/etc...)
503 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
505 [17441] math: isnan() should use __builtin_isnan() in GCC
506 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
507 (related to lock elision)
508 [17787] manual: Exponent on page 324 of the PDF ends prematurely
509 [17886] time: strptime should be able to parse "Z" as a timezone with %z
510 [17887] time: strptime should be able to parse "+01:00" style timezones
511 [17905] libc: catopen() Multiple unbounded stack allocations
513 [18084] libc: backtrace (..., 0) dumps core on x86
514 [18086] libc: nice() sets errno to 0 on success
515 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
516 is too large (CVE-2015-8778)
517 [18251] dynamic-link: SONAME missing when audit modules provides path
518 [18265] libc: add attributes for wchar string and memory functions
519 [18370] math: csqrt missing underflows
520 [18421] libc: [hppa] read-only segment has dynamic relocations
521 [18472] libc: Obsolete syscall wrappers should be compat symbols
522 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
523 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
524 [18525] localedata: Remove locale timezone information
525 [18560] libc: [powerpc] spurious bits/ipc.h definitions
526 [18568] localedata: Update locale data to Unicode 8.0
527 [18589] locale: sort-test.sh fails at random
528 [18595] math: ctan, ctanh missing underflows
529 [18604] libc: assert macro-expands its argument
530 [18610] math: S390: fetestexcept() reports any exception if DXC-code
531 contains a vector instruction exception.
532 [18611] math: j1, jn missing errno setting on underflow
533 [18618] localedata: sync Chechen locale definitions with other *_RU
535 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
536 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
537 [18665] network: In send_dg, the recvfrom function is NOT always using the
538 buffer size of a newly created buffer (CVE-2015-7547)
539 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
541 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
543 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
544 [18699] math: tilegx cproj() for various complex infinities does not yield
546 [18724] libc: Harden put*ent functions against data injection
547 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
548 [18755] build: build errors with -DNDEBUG
549 [18757] stdio: fmemopen fails to set errno on failure
550 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
552 [18781] libc: openat64 lacks O_LARGEFILE
553 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
554 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
555 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
556 [18790] math: [ldbl-128ibm] tanhl inaccurate
557 [18795] libc: stpncpy fortification misses buffer lengths that are
559 [18796] build: build fails for --disable-mathvec
560 [18803] math: hypot missing underflows
561 [18820] stdio: fmemopen may leak memory on failure
562 [18823] math: csqrt spurious underflows
563 [18824] math: fma spurious underflows
564 [18825] math: pow missing underflows
565 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
566 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
567 [18870] build: sem_open.c fails to compile with missing symbol
569 [18872] stdio: Fix memory leak in printf_positional
570 [18873] libc: posix_fallocate overflow check ineffective
571 [18875] math: Excess precision leads incorrect libm
572 [18877] libc: arm: mmap offset regression
573 [18887] libc: memory corruption when using getmntent on blank lines
574 [18918] localedata: hu_HU: change time to HH:MM:SS format
575 [18921] libc: Regression: extraneous stat() and fstat() performed by
577 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
578 binaries (CVE-2015-8777)
579 [18951] math: tgamma missing underflows
580 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
582 [18953] localedata: lt_LT: change currency symbol to the euro
583 [18956] math: powf inaccuracy
584 [18961] math: [i386] exp missing underflows
585 [18966] math: [i386] exp10 missing underflows
586 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
587 [18969] build: multiple string test failures due to missing locale
589 [18970] libc: Reference of pthread_setcancelstate in libc.a
590 [18977] math: float / long double Bessel functions not in XSI POSIX
591 [18980] math: i386 libm functions return with excess range and precision
592 [18981] math: i386 scalb*, ldexp return with excess range and precision
593 [18982] stdio: va_list and vprintf
594 [18985] time: Passing out of range data to strftime() causes a segfault
596 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
597 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
598 [19012] locale: iconv_open leaks memory on error path
599 [19016] math: clog, clog10 inaccuracy
600 [19018] nptl: Mangle function pointers in tls_dtor_list
601 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
602 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
603 [19048] malloc: malloc: arena free list can become cyclic, increasing
605 [19049] math: [powerpc] erfc incorrect zero sign
606 [19050] math: [powerpc] log* incorrect zero sign
607 [19058] math: [x86_64] Link fail with -fopenmp and -flto
608 [19059] math: nexttoward overflow incorrect in non-default rounding modes
609 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
610 [19074] network: Data race in _res_hconf_reorder_addrs
611 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
612 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
613 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
615 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
617 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
618 [19086] manual: posix_fallocate64 documented argument order is wrong.
619 [19088] math: lround, llround missing exceptions close to overflow
621 [19094] math: lrint, llrint missing exceptions close to overflow threshold
622 [19095] math: dbl-64 lrint incorrect for 64-bit long
623 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
624 [19124] dynamic-link: ld.so failed to build with older assmebler
625 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
626 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
627 [19134] math: [powerpc32] lround, lroundf spurious exceptions
628 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
629 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
630 pthread_setaffinity_np
631 [19156] math: [ldbl-128] j0l spurious underflows
632 [19164] nptl: tst-getcpu fails with many possible CPUs
633 [19168] math: math/test-ildoubl and math/test-ldouble failure
634 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
635 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
637 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
638 (FE_NOMASK_ENV) do not clear SSE exceptions
639 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
640 _int_new_arena/reused_arena
641 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
642 [19201] math: dbl-64 remainder incorrect sign of zero result
643 [19205] math: bits/math-finite.h conditions do not match math.h and
645 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
646 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
647 for C99-based standards
648 [19212] libc: features.h not -Wundef clean
649 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
651 [19214] libc: Family and model identification for AMD CPU's are incorrect.
652 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
653 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
655 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
657 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
659 [19242] libc: strtol incorrect in Turkish locales
660 [19243] malloc: reused_arena can pick an arena on the free list, leading
661 to an assertion failure and reference count corruption
662 [19253] time: tzset() ineffective when temporary TZ did not include DST
664 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
665 [19270] math: [hppa] Shared libm missing __isnanl
666 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
667 MAP_HUGETLB and MAP_STACK defines
668 [19313] nptl: Wrong __cpu_mask for x32
669 [19347] libc: grantpt: try to force a specific gid even without pt_chown
670 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
671 [19350] math: [ldbl-128ibm] sinhl spurious overflows
672 [19351] math: [ldbl-128ibm] logl inaccurate near 1
673 [19363] time: x32: times() return value wrongly truncates/sign extends
675 [19367] dynamic-link: Improve branch prediction on Silvermont
676 [19369] network: Default domain name not reset by res_ninit when "search"
677 / "domain" entry is removed from resolv.conf
678 [19375] math: powerpc: incorrect results for POWER7 logb with negative
680 [19385] localedata: bg_BG: time separator should be colon, not comma
681 [19408] libc: linux personality syscall wrapper may erroneously return an
682 error on 32-bit architectures
683 [19415] libc: dladdr returns wrong names on hppa
684 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
685 IBM905, IBM907, and IBM909
686 [19439] math: Unix98 isinf and isnan functions conflict with C++11
687 [19443] build: build failures with -DDEBUG
688 [19451] build: Make check fails on test-double-vlen2
689 [19462] libc: Glibc failed to build with -Os
690 [19465] math: Wrong code with -Os
691 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
693 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
695 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
696 [19486] math: S390: Math tests fail with "Exception Inexact set".
697 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
698 [19550] libc: [mips] mmap negative offset handling inconsistent with other
700 [19590] math: Fail to build shared objects that use libmvec.so functions.
704 * The following bugs are resolved with this release:
706 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
707 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
708 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
709 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
710 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
711 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
712 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
713 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
714 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
715 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
716 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
717 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
718 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
719 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
720 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
721 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
722 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
723 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
724 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
725 18657, 18676, 18694, 18696, 18887.
727 * Cache information can be queried via sysconf() function on s390 e.g. with
728 _SC_LEVEL1_ICACHE_SIZE as argument.
730 * A buffer overflow in gethostbyname_r and related functions performing DNS
731 requests has been fixed. If the NSS functions were called with a
732 misaligned buffer, the buffer length change due to pointer alignment was
733 not taken into account. This could result in application crashes or,
734 potentially arbitrary code execution, using crafted, but syntactically
735 valid DNS responses. (CVE-2015-1781)
737 * The time zone file parser has been made more robust against crafted time
738 zone files, avoiding heap buffer overflows related to the processing of
739 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
740 large time zone data files. Overly long time zone specifiers in the TZ
741 variable no longer result in stack overflows and crashes.
743 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
744 for LD and GD on x86 and x86-64, has been implemented. You will need
745 binutils-2.24 or later to enable this optimization.
747 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
748 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
749 Hat). These updates cause user visible changes, such as the fix for bug
752 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
753 and getXXbyYY NSS calls for the same database, causing a denial-of-service
754 condition in some applications.
756 * Added vector math library named libmvec with the following vectorized x86_64
757 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
759 The library can be disabled with --disable-mathvec. Use of the functions is
760 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
761 Shared library libmvec.so is linked in as needed when using -lm (no need to
762 specify -lmvec explicitly for not static builds).
763 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
765 * A new fmemopen implementation has been added with the goal of POSIX
766 compliance. The new implementation fixes the following long-standing
767 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
768 old implementation is still present for use be by existing binaries.
770 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
771 releases. It has been fixed to match 2.19 and older, but binaries built
772 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
774 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
775 Contributed by Roland McGrath (Google).
777 * The header <regexp.h> is deprecated, and will be removed in a future
778 release. Use of this header will trigger a deprecation warning.
779 Application developers should update their code to use <regex.h> instead.
781 This header was formerly part of SUS, but was deprecated in 1994 and
782 removed from the standard in 2001. Also, the glibc implementation
783 leaks memory. See BZ#18681 for more details.
787 * The following bugs are resolved with this release:
789 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
790 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
791 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
792 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
793 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
794 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
795 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
796 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
797 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
798 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
801 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
802 too little memory for the to-be-scanned arguments and overflow the
803 allocated buffer. The implementation now correctly computes the required
804 buffer size when using malloc, and switches to malloc from alloca as
807 * A new semaphore algorithm has been implemented in generic C code for all
808 machines. Previous custom assembly implementations of semaphore were
809 difficult to reason about or ensure that they were safe. The new version
810 of semaphore supports machines with 64-bit or 32-bit atomic operations.
811 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
812 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
814 * Port to Altera Nios II has been contributed by Mentor Graphics.
816 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
817 implementations for powerpc64/powerpc64le.
818 Implemented by Adhemerval Zanella (IBM).
820 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
821 and powerpc64le. This may improve lock scaling of existing programs on
822 HTM capable systems. The lock elision code is only enabled with
823 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
824 powerpc will issue a transaction abort on every syscall to avoid side
825 effects being visible outside transactions.
827 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
828 AArch64. Contributed by ARM Ltd.
830 * i386 memcpy functions optimized with SSE2 unaligned load/store.
832 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
833 under certain input conditions resulting in the execution of a shell for
834 command substitution when the application did not request it. The
835 implementation now checks WRDE_NOCMD immediately before executing the
836 shell and returns the error WRDE_CMDSUB as expected.
838 * CVE-2012-3406 printf-style functions could run into a stack overflow when
839 processing format strings with a large number of format specifiers.
841 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
842 infinite loop if the DNS response contained a PTR record of an unexpected
845 * The minimum GCC version that can be used to build this version of the GNU
846 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
847 still be used to compile programs using the GNU C Library.
849 * The GNU C Library is now built with -Werror by default. This can be
850 disabled by configuring with --disable-werror.
852 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
854 * The obsolete sigvec function has been removed. This was the original
855 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
856 programs have been using instead for about 25 years. Of course, ABI
857 compatibility for old binaries using sigvec remains intact.
859 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
860 with newer versions of bison.
862 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
863 The original MIPS o32 hard-float ABI requires an FPU where double-precision
864 registers overlay two consecutive single-precision registers. MIPS32R2
865 introduced a new FPU mode (FR=1) where double-precision registers extend the
866 corresponding single-precision registers which is incompatible with the
867 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
868 require the use of FR=1 making a transition necessary. New o32 ABI
869 extensions enable users to migrate over time from the original o32 ABI
870 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
871 tracks the ABI of any loaded object and verifies that new objects are
872 compatible. Mode transitions will also be requested as required and
873 unsupportable objects will be rejected. The ABI checks include both soft and
874 hard float ABIs for o32, n32 and n64.
876 GCC 5 with GNU binutils 2.25 onwards:
877 It is strongly recommended that all o32 system libraries are built using the
878 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
879 with the original and all new o32 ABI extensions. Configure a MIPS GCC
880 compiler using --with-fp-32=xx to set this by default.
884 * The following bugs are resolved with this release:
886 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
887 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
888 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
889 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
890 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
891 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
892 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
893 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
894 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
895 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
896 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
897 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
898 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
899 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
900 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
902 * Reverted change of ABI data structures for s390 and s390x:
903 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
904 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
905 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
906 are preserved pointing straight to the same implementation as the old ones.
907 Given that, new callers will simply provide a too-big buffer to these
908 functions. Any applications/libraries out there that embed jmp_buf or
909 ucontext_t in an ABI-relevant data structure that have already been rebuilt
910 against 2.19 headers will have to rebuilt again. This is necessary in any
911 case to revert the breakage in their ABI caused by the glibc change.
913 * Support for file description locks is added to systems running the
914 Linux kernel. The standard file locking interfaces are extended to
915 operate on file descriptions, not file descriptors, via the use of
916 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
917 are associated with an open file instead of a process.
919 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
921 * The minimum Linux kernel version that this version of the GNU C Library
922 can be used with is 2.6.32.
924 * Running the testsuite no longer terminates as soon as a test fails.
925 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
926 with PASS or FAIL lines for individual tests. A summary of the results is
927 printed, including a list of failing lists, and "make check" exits with
928 error status if there were any unexpected failures. "make check
929 stop-on-test-failure=y" may be used to keep the old behavior.
931 * The am33 port, which had not worked for several years, has been removed
934 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
935 supported; they now act the same as _DEFAULT_SOURCE (but generate a
936 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
937 conflicted with POSIX (support for which was removed in 2.19), the
938 interfaces those macros enabled remain available when compiling with
939 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
942 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
944 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
945 This may improve lock scaling of existing programs on TX capable systems.
946 The lock elision code is only built with --enable-lock-elision=yes and
947 then requires a GCC version supporting the TX builtins. With lock elision
948 default mutexes are elided via __builtin_tbegin, if the cpu supports
949 transactions. By default lock elision is not enabled and the elision code
952 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
953 copy the path argument. This allowed programs to cause posix_spawn to
954 deference a dangling pointer, or use an unexpected pathname argument if
955 the string was modified after the posix_spawn_file_actions_addopen
958 * All supported architectures now use the main glibc sysdeps directory
959 instead of some being in a separate "ports" directory (which was
960 distributed separately before glibc 2.17).
962 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
963 On configurations that support it (all Linux configurations), it's now
964 used regardless of the --enable-add-ons switch to configure. It is no
965 longer possible to build such configurations without pthreads support.
967 * Locale names, including those obtained from environment variables (LANG
968 and the LC_* variables), are more tightly checked for proper syntax.
969 setlocale will now fail (with EINVAL) for locale names that are overly
970 long, contain slashes without starting with a slash, or contain ".." path
971 components. (CVE-2014-0475) Previously, some valid locale names were
972 silently replaced with the "C" locale when running in AT_SECURE mode
973 (e.g., in a SUID program). This is no longer necessary because of the
976 * On x86-64, the dynamic linker's lazy-binding support is now compatible
977 with application code using Intel MPX instructions. (With all previous
978 versions, the MPX register state could be clobbered when making calls
979 into or out of a shared library.) Note that while the new dynamic
980 linker is compatible with all known x86 hardware whether or not it
981 supports Intel MPX, some x86 instruction-set emulators might fail to
982 handle the new instruction encodings. This is known to affect Valgrind
983 versions up through 3.9 (but will be fixed in the forthcoming 3.10
984 release), and might affect other tools that do instruction emulation.
986 * Support for loadable gconv transliteration modules has been removed.
987 The support for transliteration modules has been non-functional for
988 over a decade, and the removal is prompted by security defects. The
989 normal gconv conversion modules are still supported. Transliteration
990 with //TRANSLIT is still possible, and the //IGNORE specifier
991 continues to be supported. (CVE-2014-5119)
993 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
994 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
995 resulting a denial-of-service security vulnerability in applications which
996 use functions related to iconv. (CVE-2014-6040)
1000 * The following bugs are resolved with this release:
1002 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
1003 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
1004 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
1005 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
1006 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
1007 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
1008 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
1009 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
1010 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
1011 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
1012 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
1013 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
1014 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
1015 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
1016 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
1017 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
1018 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
1019 16431, 16453, 16474, 16506, 16510, 16529
1021 * Slovenian translations for glibc messages have been contributed by the
1022 Translation Project's Slovenian team of translators.
1024 * The public headers no longer use __unused nor __block. This change is to
1025 support compiling programs that are derived from BSD sources and use
1026 __unused internally, and to support compiling with Clang's -fblock
1027 extension which uses __block.
1029 * CVE-2012-4412 The strcoll implementation caches indices and rules for
1030 large collation sequences to optimize multiple passes. This cache
1031 computation may overflow for large collation sequences and may cause a
1032 stack or buffer overflow. This is now fixed to use a slower algorithm
1033 which does not use a cache if there is an integer overflow.
1035 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
1036 rules for large collation sequences to optimize multiple passes and falls
1037 back to alloca if malloc fails, resulting in a possible stack overflow.
1038 The implementation now falls back to an uncached collation sequence lookup
1041 * CVE-2013-4788 The pointer guard used for pointer mangling was not
1042 initialized for static applications resulting in the security feature
1043 being disabled. The pointer guard is now correctly initialized to a
1044 random value for static applications. Existing static applications need
1045 to be recompiled to take advantage of the fix (bug 15754).
1047 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
1048 to the d_name member of struct dirent, or omit the terminating NUL
1049 character. (Bugzilla #14699).
1051 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
1052 aligned_alloc functions could allocate too few bytes or corrupt the
1053 heap when passed very large allocation size values (Bugzilla #15855,
1056 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
1057 for AF_INET6 has been fixed (Bugzilla #16072).
1059 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
1060 pap_CW, quz_PE, the_NP.
1062 * Substantially revised locales: gd_GB, ht_HT
1064 * The LC_ADDRESS field was updated to support country_car for almost all
1067 * ISO 1427 definitions were updated.
1069 * ISO 3166 definitions were updated.
1071 * The localedef utility now supports --big-endian and --little-endian
1072 command-line options to generate locales for a different system from that
1073 for which the C library was built.
1075 * Binary locale files now only depend on the endianness of the system for
1076 which they are generated and not on other properties of that system. As a
1077 consequence, binary files generated with new localedef may be incompatible
1078 with old versions of the GNU C Library, and binary files generated with
1079 old localedef may be incompatible with this version of the GNU C Library,
1080 in the following circumstances:
1082 + Locale files may be incompatible on m68k systems.
1084 + Locale archive files (but not separate files for individual locales) may
1085 be incompatible on systems where plain "char" is signed.
1087 * The configure option --disable-versioning has been removed. Builds with
1088 --disable-versioning had not worked for several years.
1090 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
1091 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
1093 * SystemTap probes for malloc have been introduced.
1095 * SystemTap probes for slow multiple precision fallback paths of
1096 transcendental functions have been introduced.
1098 * Support for powerpc64le has been added.
1100 * The soft-float powerpc port now supports e500 processors.
1102 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
1104 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
1105 set of header declarations that are enabled by default, even when other
1106 feature test macros or compiler options such as -std=c99 would otherwise
1107 disable some of those declarations.
1109 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
1110 conflict with POSIX. The libbsd-compat library (which was a dummy library
1111 that did nothing) has also been removed.
1113 * Preliminary documentation about Multi-Thread, Async-Signal and
1114 Async-Cancel Safety has been added.
1116 * Change of ABI data structures for s390 and s390x:
1117 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
1118 allow for future hardware extensions. All library functions that accept or
1119 return these structures were versioned in order to provide backwards
1120 compatibility with existing code. However, not all cases can be handled
1121 with interface versioning. If an application embeds either structure into
1122 another structure and that structure is passed to another compilation unit
1123 which expects the newer larger-sized object then any access to the new
1124 fields will result in undefined behaviour. Similarly any access to fields
1125 that were moved by the enlarging of the structures will cause undefined
1126 behaviour. To fix the undefined behaviour all objects that are part of the
1127 final in-memory image must agree on the size of structures, and this may
1128 require recompilation.
1132 * The following bugs are resolved with this release:
1134 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
1135 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
1136 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
1137 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
1138 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
1139 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
1140 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
1141 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
1142 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
1143 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
1144 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
1145 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
1146 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
1149 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
1150 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
1151 Distributions can re-enable building and using pt_chown via the new configure
1152 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
1153 considerable security risks and should only be used if the distribution
1154 understands and accepts the risks.
1156 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
1159 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
1160 fixed (Bugzilla #15330).
1162 * Add support for calling C++11 thread_local object destructors on thread
1163 and program exit. This needs compiler support for offloading C++11
1164 destructor calls to glibc.
1166 * Improved worst case performance of libm functions with double inputs and
1169 * Support for priority inherited mutexes in pthread condition variables on
1170 non-x86 architectures.
1172 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
1174 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
1176 * Optimized string functions for ARM. Implemented by Will Newton and
1179 * Optimized libm functions for SPARC. Implemented by David S. Miller.
1181 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
1184 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
1185 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
1187 * Added a benchmark framework to track performance of functions in glibc.
1189 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
1190 It is based on draft TS 18661 and currently enabled as a GNU extension.
1192 * On Linux, the clock function now uses the clock_gettime system call
1193 for improved precision, rather than old times system call.
1195 * Added support for version-3 tz format files. This is needed when using
1196 the tz database release 2013e or later, and affects a few unusual cases --
1197 currently only TZ='America/Godthab' for time stamps after 2037.
1199 * Added new API functions pthread_getattr_default_np and
1200 pthread_setattr_default_np to get and set the default pthread
1201 attributes of a process.
1203 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
1204 This may improve lock scaling of existing programs on TSX capable systems.
1205 When the --enable-lock-elision=yes parameter is specified at configure
1206 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
1209 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
1210 availability). Implemented by Ryan S. Arnold.
1212 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
1216 * The following bugs are resolved with this release:
1218 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
1219 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
1220 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
1221 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
1222 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
1223 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
1224 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
1225 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
1226 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
1227 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
1228 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
1229 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
1230 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
1231 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
1232 14879, 14889, 14893, 14898, 14914.
1234 * Optimization of memcpy for MIPS.
1236 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
1237 EMFILE has been fixed (Bugzilla #14889).
1239 * The add-on ports collection is now distributed in the "ports" subdirectory
1240 of the main GNU C Library distribution, rather than separately.
1242 * Port to ARM AArch64 contributed by Linaro.
1244 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
1245 Optimized versions of memcpy, memset, and memcmp added for System z10 and
1247 Implemented by Andreas Krebbel.
1249 * The new function secure_getenv allows secure access to the environment,
1250 returning NULL if running in a SUID/SGID process. This function replaces
1251 the internal function __secure_getenv.
1253 * SystemTap static probes have been added into the dynamic linker.
1254 Implemented by Gary Benson.
1256 * Optimizations of string functions strstr, strcasestr and memmem.
1257 Implemented by Maxim Kuvyrkov.
1259 * The minimum Linux kernel version that this version of the GNU C Library
1260 can be used with is 2.6.16.
1262 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
1263 powerpc POWER7. Implemented by Will Schmidt.
1265 * New configure option --disable-nscd builds the C library such that it
1266 never attempts to contact the Name Service Caching Daemon (nscd).
1267 New configure option --disable-build-nscd avoids building nscd itself;
1268 this is the default if --disable-nscd is used.
1270 * Improved support for cross-compilation, including cross-testing and
1271 bootstrap builds without a previously built glibc.
1273 * Several testsuite tests are now able to test multiple IFUNC variants of an
1274 interface, rather than just testing the one that would be chooen by
1277 * New configure options --with-bugurl and --with-pkgversion, for
1278 distributors to use to embed their bug-reporting and package version
1279 information in --help and --version output.
1281 * The ttyname and ttyname_r functions on Linux now fall back to searching for
1282 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
1283 allows creation of chroots without the procfs mounted on /proc.
1285 * The `crypt' function now fails if passed salt bytes that violate the
1286 specification for those values. On Linux, the `crypt' function will
1287 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
1288 enabled, and fail on encrypted strings using the MD5 or DES algorithm
1289 when the mode is enabled.
1291 * The `clock_*' suite of functions (declared in <time.h>) is now available
1292 directly in the main C library. Previously it was necessary to link with
1293 -lrt to use these functions. This change has the effect that a
1294 single-threaded program that uses a function such as `clock_gettime' (and
1295 is not linked with -lrt) will no longer implicitly load the pthreads
1296 library at runtime and so will not suffer the overheads associated with
1297 multi-thread support in other code such as the C++ runtime library.
1299 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
1304 * The following bugs are resolved with this release:
1306 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
1307 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
1308 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
1309 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
1310 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
1311 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
1312 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
1313 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
1314 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
1315 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
1316 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
1317 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
1318 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
1319 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
1320 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
1321 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
1322 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
1323 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
1324 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
1325 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
1326 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
1327 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
1330 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
1331 configuring glibc with:
1332 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
1333 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
1334 Implemented by H.J. Lu.
1338 + define static_assert
1340 + do not declare gets
1342 + declare at_quick_exit and quick_exit also for ISO C11
1344 + aligned_alloc. NB: The code is deliberately allows the size parameter
1345 to not be a multiple of the alignment. This is a moronic requirement
1346 in the standard but it is only a requirement on the caller, not the
1349 + timespec_get added
1351 + uchar.h support added
1353 + CMPLX, CMPLXF, CMPLXL added
1355 Implemented by Ulrich Drepper.
1357 * Support for the IA-64 has been moved to ports.
1359 * Remove support for anything but ELF binary format
1361 * Checking versions of poll, ppoll added.
1362 Implemented by Ulrich Drepper.
1364 * More generic and 64-bit performance optimizations to math functions.
1365 Implemented by Ulrich Drepper.
1367 * New configure option --enable-obsolete-rpc makes the deprecated RPC
1368 headers and functions available at compile time as they were before
1369 version 2.14. This option will be removed at some time in the future
1370 after the TI-RPC library becomes fully sufficient for the needs of
1371 existing applications.
1373 * Compatibility code for Linux kernel versions before 2.4 has been removed.
1374 Note that glibc is not expected to work with any Linux kernel version
1377 * New header <sys/auxv.h> and function getauxval allowing easy access to
1378 the AT_* key-value pairs passed from the Linux kernel. The header also
1379 defines the HWCAP_* bits associated with the AT_HWCAP key.
1381 * New locales: mag_IN
1383 * New configure option --enable-systemtap builds SystemTap static probes
1384 into libc for setjmp and longjmp and into libpthread for various operations.
1385 So far the setjmp/longjmp probes and some of the libpthread probes are
1386 provided only for i*86 and x86_64.
1387 Implemented by Roland McGrath and Rayson Ho.
1389 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
1391 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
1394 * More optimized functions for SPARC. Implemented by David S. Miller.
1396 * Improved support for cross-compilation, especially bootstrap builds
1397 without a previously built glibc.
1399 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
1400 Chris Metcalf from Tilera.
1402 * Support for the old ARM ABI has been removed from ports. Only the EABI is
1403 now supported for ARM processors.
1405 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
1406 as the name of the dynamic linker, to distinguish it from the
1407 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
1409 * Support for CRIS has been removed from ports.
1411 * A new class of installed header has been documented for low-level
1412 platform-specific functionality. PowerPC added the first instance with a
1413 function to provide time base register access. Contributed by Tulio
1414 Magno Quites Machado Filho.
1416 * ix86 configurations now install header files that are consistent with
1417 what x86-64 configurations install. These same header files can be used
1418 for -m32, -m64, or -mx32 builds.
1419 Contributed by H.J. Lu.
1421 * Math library bug fixes. A thorough audit of all open math library bugs was
1422 conducted by Joseph Myers. Significant progress was made on many math
1423 library bugs resulting in more accurate exceptions and function results.
1424 Many thanks to all those that contributed including Andreas Jaeger for his
1425 patch review and work on the x87 trigonometric instruction issues.
1427 * Timezone data is no longer installed. Timezone-related binaries and scripts
1428 will continue to be installed. Users should obtain their timezone data from
1429 their distribution provider or from the tzdata package at
1430 <ftp://munnari.oz.au/pub/>.
1434 * The following bugs are resolved with this release:
1436 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
1437 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
1438 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
1439 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
1440 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
1441 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
1442 13484, 13506, 13515, 13523, 13524, 13538, 13540
1444 * New program pldd to list loaded object of a process
1445 Implemented by Ulrich Drepper.
1447 * Add nss_db support back to glibc. No more dependency on Berkeley db
1448 and support for initgroups lookups.
1449 Implemented by Ulrich Drepper.
1451 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
1452 Contributed by HJ Lu.
1454 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
1455 Contributed by HJ Lu.
1457 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
1458 on x86-32 and x86-64.
1459 Contributed by Liubov Dmitrieva.
1461 * Optimized strchr and strrchr for SSE on x86-32.
1462 Contributed by Liubov Dmitrieva.
1464 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
1465 for x86-64 and x86-32.
1466 Contributed by Liubov Dmitrieva.
1468 * New interfaces: scandirat, scandirat64
1469 Implemented by Ulrich Drepper.
1471 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
1472 Implemented by Ulrich Drepper.
1474 * nscd now also caches the netgroup database.
1475 Implemented by Ulrich Drepper.
1477 * Integrate libm with gcc's -ffinite-math-only option.
1478 Implemented by Ulrich Drepper.
1480 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
1481 to math functions. Implemented by Ulrich Drepper.
1483 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
1484 Implemented by Ulrich Drepper.
1486 * New Linux interfaces: process_vm_readv, process_vm_writev
1488 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
1489 Implemented by Ulrich Drepper.
1491 * Optimized nearbyint and strcasecmp for PPC.
1492 Implemented by Adhemerval Zanella.
1494 * New locales: bho_IN, unm_US, es_CU, ta_LK
1498 * The following bugs are resolved with this release:
1500 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
1501 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
1502 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
1503 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
1504 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
1505 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
1506 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
1507 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
1508 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
1509 12795, 12811, 12813, 12814, 12841
1511 * The RPC implementation in libc is obsoleted. Old programs keep working
1512 but new programs cannot be linked with the routines in libc anymore.
1513 Programs in need of RPC functionality must be linked against TI-RPC.
1514 The TI-RPC implementation is IPv6 enabled and there are other benefits.
1516 Visible changes of this change include (obviously) the inability to link
1517 programs using RPC functions without referencing the TI-RPC library and the
1518 removal of the RPC headers from the glibc headers.
1519 Implemented by Ulrich Drepper.
1521 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
1522 syncfs, setns, sendmmsg
1524 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
1525 yue_HK, lij_IT, mhr_RU
1527 * New encodings: CP770, CP771, CP772, CP773, CP774
1529 * New program sotruss to trace calls through PLTs
1530 Implemented by Ulrich Drepper.
1532 * The malloc hook implementation is marked deprecated and will be removed
1533 from the default implementation in the next version. The design never
1534 worked ever since the introduction of threads. Even programs which do
1535 not create threads themselves can use multiple threads created internally.
1539 * The following bugs are resolved with this release:
1541 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
1542 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
1543 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
1544 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
1547 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
1549 * POWER7 optimizations: memset, memcmp, strncmp
1551 * New optimized string functions for x86-64: strnlen (SSE2),
1552 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
1553 Implemented by Ulrich Drepper.
1557 * The following bugs are resolved with this release:
1559 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
1560 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
1561 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
1562 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
1563 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
1564 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
1565 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
1566 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
1568 * New interfaces: pthread_getname_np, pthread_setname_np
1570 * New Linux interface: recvmmsg
1572 * STT_GNU_IFUNC implemented for Sparc by David Miller.
1574 * The dynamic linker now recognizes supported ABI versions from the
1575 EI_ABIVERSION field in the ELF header.
1576 Implemented by Ulrich Drepper.
1578 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
1579 will not be used to fill in password fields in the passwd.byname replies.
1580 Instead it is used to synthesize the shadow.byname table, should it be
1581 missing. This is a useful mode in some installations involving Solaris.
1582 Implemented by Ulrich Drepper.
1584 * New locales: kok_IN, sq_MK, cv_RU
1588 * The following bugs are resolved with this release:
1590 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
1591 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
1592 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
1593 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
1594 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
1595 10789, 10817, 10823, 10840, 10847
1597 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
1599 Implemented by Ulrich Drepper.
1601 * Checking version of longjmp added that fails if an uninitialized stack
1602 frame would be created. Implemented by Ulrich Drepper.
1604 * STT_GNU_IFUNC is now supported in static executables.
1605 Implemented by H.J. Lu.
1607 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
1609 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
1610 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
1611 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
1612 Contributed by H.J. Lu.
1614 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
1615 Implemented by Ulrich Drepper.
1617 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
1619 Contributed by H.J. Lu.
1621 * Support for fma instruction in AVX on x86-64.
1622 Implemented by H.J. Lu and Ulrich Drepper.
1624 * AVX support in x86-64 auditing support in ld.so.
1625 Implemented by H.J. Lu.
1627 * STB_GNU_UNIQUE support added.
1628 Implemented by Ulrich Drepper.
1630 * Implement second fallback mode for optimized DNS lookup for even more
1631 broken environments. If two requests from the same port are not
1632 handled correctly close the socket and open a new one before sending
1633 the second request. The 'single-request-reopen' option in /etc/resolv.conf
1634 can be used to select this mode right away, instead of rediscovering the
1635 necessity is every process again.
1636 Implemented by Ulrich Drepper.
1638 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
1639 Implemented by Adam Tkac.
1641 * Optimized iconv conversions for S390x.
1642 Implemented by Andreas Krebbel.
1644 * Using condvars with PI mutexes is now more efficient due to kernel
1645 support for requeueing to PI futexes. NPTL support added for x86-64.
1646 Implemented by Ulrich Drepper.
1648 * New locales: ps_AF, my_MM
1652 * The following bugs are resolved with this release:
1654 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
1655 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
1656 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
1657 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
1658 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
1660 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
1661 Implemented by Ulrich Drepper.
1663 * New Linux interfaces: accept4, fallocate, fallocate64.
1664 Implemented by Ulrich Drepper.
1666 * Correct declarations of string function when used in C++ code. This
1667 could lead to compile errors for invalid C++ code.
1669 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
1672 * New POSIX 2008 interface: psiginfo
1673 Implemented by Ulrich Drepper.
1675 * New ISO C++1x interfaces: quick_exit, at_quick_exit
1676 Implemented by Ulrich Drepper.
1678 * Support for selecting between multiple function definitions at runtime
1679 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
1681 * The libcrypt library can now use the hash function implementations in
1682 NSS. Implemented by Ulrich Drepper.
1684 * The malloc implementation can be compiled to be less memory efficient
1685 but higher performing in multi-threaded programs.
1686 Implemented by Ulrich Drepper.
1688 * New locales: nan_TW@latin, ks_IN
1690 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
1691 Implemented by Ulrich Drepper.
1693 * Extended printf hook support. It is possible to use user-defined types
1694 and extend existing format specifiers.
1695 Implemented by Ulrich Drepper.
1697 * Handling for group shadow files has been added.
1698 Implemented by Ulrich Drepper.
1700 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
1701 servers (the case, e.g., for some people using the built-in DNS
1702 server in ADSL modems/routers). There is a once-per-process timeout
1703 in case of a broken server. To avoid it, users can run nscd or put
1704 'options single-request' in /etc/resolv.conf.
1705 Implemented by Ulrich Drepper.
1709 * The following bugs are resolved with this release:
1711 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
1712 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
1713 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
1714 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
1715 6968, 6974, 6980, 6995, 7008, 7009, 7029
1717 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
1718 up at the same time. Implemented by Ulrich Drepper.
1720 * TLS descriptors for LD and GD on x86 and x86-64.
1721 Implemented by Alexandre Oliva.
1723 * getaddrinfo now handles DCCP and UDPlite.
1724 Implemented by Ulrich Drepper.
1726 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
1727 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
1728 Implemented by Ulrich Drepper.
1730 * New implementation of memmem, strstr, and strcasestr which is O(n).
1731 Implemented by Eric Blake.
1733 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
1735 * Implement "e" option for popen to open file descriptor with the
1736 close-on-exec flag set. Implemented by Ulrich Drepper.
1738 * Implement "b" mode for fmemopen. In this mode writes writes don't
1739 implicitly add a NUL byte and seeks from the end of the buffer really
1740 use the buffer end, not the string length as the basis.
1741 Implemented by Ulrich Drepper.
1743 * Many functions, exported and internal, now atomically set the close-on-exec
1744 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
1746 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
1748 Implemented by Pravin Satpute.
1750 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
1754 * The following bugs are resolved with this release:
1756 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
1757 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
1758 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
1759 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
1760 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
1761 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
1762 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
1764 * New locales: bo_CN, bo_IN, shs_CA.
1766 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
1768 * Sorting rules for some Indian languages (Devanagari and Gujarati).
1769 Implemented by Pravin Satpute.
1771 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
1773 * nscd caches now all timeouts for DNS entries
1774 Implemented by Ulrich Drepper.
1776 * nscd is more efficient and wakes up less often.
1777 Implemented by Ulrich Drepper.
1779 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
1780 vdprintf, and obstack_vprintf.
1781 Implemented by Jakub Jelinek.
1783 * Faster memset for x86-64.
1784 Implemented by Harsha Jagasia and H.J. Lu.
1786 * Faster memcpy on x86.
1787 Implemented by Ulrich Drepper.
1789 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
1790 Implemented by Ulrich Drepper.
1792 * Faster sqrt and sqrtf implemention for some PPC variants.
1793 Implemented by Steven Munroe.
1797 * The following bugs are resolved with this release:
1799 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
1800 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
1801 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
1802 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
1803 5071, 5103, 5104, 5112, 5113, 5184, 5186
1805 * More checking functions: fread, fread_unlocked, open*, mq_open.
1806 Implemented by Jakub Jelinek and Ulrich Drepper.
1808 * Extend fortification to C++. Implemented by Jakub Jelinek.
1810 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
1811 by not recognizing 'a' as a modifier when those specs are requested.
1812 Implemented by Jakub Jelinek.
1814 * PPC optimizations to math and string functions.
1815 Implemented by Steven Munroe.
1817 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
1818 options to be passed. Implemented by Ulrich Drepper.
1820 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
1822 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
1823 Implemented by Ulrich Drepper.
1825 * Handle private futexes in the NPTL implementation.
1826 Implemented by Jakub Jelinek and Ulrich Drepper.
1828 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
1829 Implemented by Roland McGrath and Ulrich Drepper.
1831 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
1833 * SHA-256 and SHA-512 based password encryption.
1834 Implemented by Ulrich Drepper.
1836 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1837 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1840 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1841 Implemented by Ulrich Drepper.
1845 * The following bugs are resolved with this release:
1847 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1848 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1849 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1850 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1851 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1852 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1853 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1856 * New Linux interfaces: epoll_pwait, sched_getcpu.
1858 * New generic interfaces: strerror_l.
1860 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1864 * The following bugs are resolved with this release:
1866 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1867 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1868 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1869 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1870 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1871 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1872 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1873 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1874 3225, 3251, 3252, 3253, 3273
1876 * For Linux, the sorting of addresses returned by getaddrinfo now also
1877 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1878 Implemented by Ulrich Drepper.
1880 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1881 Implemented by Ulrich Drepper.
1883 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1885 * New iconv module for MIK. Contributed by Alexander Shopov.
1887 * For sites with broken group and/or passwd database, the auto-propagate
1888 option of nscd can prevent creating ID lookup entries from the results
1889 of a name lookup and vice versa. This usually is no problem but some
1890 site might have problems with the default behavior.
1891 Implemented by Ulrich Drepper.
1893 * Iterating over entire database in NIS can be slow. With the
1894 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1895 to trade time for memory. The entire database will be read at once.
1896 Implemented by Ulrich Drepper.
1898 * The interfaces introduced in RFC 3542 have been implemented by
1901 * Support for the new ELF hash table format was added by Ulrich Drepper.
1903 * Support for priority inheritance mutexes added by Jakub Jelinek and
1906 * Support for priority protected mutexes added by Jakub Jelinek.
1908 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1909 or_IN, csb_PL, fy_NL, sr_ME.
1913 * More overflow detection functions.
1915 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1916 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1918 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1919 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1920 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1921 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1922 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1923 by Masahide Washizawa.
1925 * It is now possible to install audit libraries for the dynamic linker using
1926 LD_AUDIT. Implemented by Ulrich Drepper.
1928 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1929 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1930 For a libc and libpthread that works well on Linux 2.4 kernels, we
1931 recommend using the stable 2.3 branch.
1933 * The new function open_wmemstream acts like open_memstream,
1934 but uses a wchar_t wide character buffer.
1936 * The new function ppoll is an improved version of poll, similar to pselect.
1938 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1939 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1940 renameat, unlinkat, linkat, symlinkat, readlinkat.
1942 * New Linux kernel system calls: unshare,
1943 inotify_init, inotify_add_watch, inotify_rm_watch.
1945 * The euidaccess function is now also known by the alias eaccess,
1946 for compatibility with some other systems.
1948 * Timezone data updated to 2006b version.
1952 * The following bugs are resolved with this release:
1954 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1955 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1956 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1957 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1958 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1959 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1961 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1963 * As of this release, GCC 4 can be used to compile the C Library.
1965 * Timezone data updated to 2005m version.
1969 * The following bugs are resolved with this release:
1971 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1972 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1973 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1974 777, 787, 821, 822, 823, 825
1976 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1980 * Support for RFC 3678. Real implementations exist only for Linux so far.
1981 Implemented by Ulrich Drepper.
1983 * nscd can now cache entries persistently. Expiring entries are reloaded.
1984 For speedups the cache can be shared in memory with client processes.
1985 Implemented by Ulrich Drepper.
1987 * nscd can now perform SELinux checks.
1988 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1990 * getaddrinfo queries are now cached. Canonical name lookup is performed
1992 Implemented by Ulrich Drepper.
1994 * The nothrow function attribute is used when headers are used by gcc when
1995 compiling C code. This can avoid significant amounts of exception
1998 * The malloc functions perform more error checking and are stricter when
1999 it comes to reacting on errors. The default action is to terminate
2000 the process after showing an error message. Implemented by Ulrich Drepper.
2002 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
2003 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
2005 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
2006 namespaces using the new function dlmopen(). This feature is of course,
2007 like most other dynamic loading functionality, not available in statically
2008 linked applications. Implemented by Ulrich Drepper.
2010 * Low-overhead boundary checking variants of string and some stdio functions
2011 were added. These are to be used in conjunction with a gcc patch by
2012 Jakub Jelinek which adds calls to these functions if possible.
2013 Implemented by Jakub Jelinek and Ulrich Drepper.
2015 * Old code for several operating systems and machine architectures that
2016 have not been in working condition in a long time have been removed from
2017 the main source tree maintained by the GNU C Library's maintainers.
2018 These files are now reside in the separate `ports' source module
2019 that is usable as an add-on when building the library.
2023 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
2024 interrogate the dynamic linker, compatible with the Solaris interface.
2026 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
2027 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
2029 * getifaddrs now uses the netlink interface on Linux to get its information.
2030 Implemented by Thorsten Kukuk.
2032 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
2033 Implemented by Ulrich Drepper.
2035 * support for non-executable stacks on x86 has been added. Changes mostly
2038 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
2041 * getaddrinfo now performs destination address selection according to
2046 * Thread-safe interfaces for many functions that access locale data
2047 were added in version 2.3, but these features were omitted from NEWS.
2048 Many functions have variants with an `_l' suffix that take a `locale_t'
2049 object as a parameter rather than consulting the current locale.
2050 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
2051 create and maintain `locale_t' objects. Additionally, the new function
2052 `uselocale' sets "the current locale" (as used by functions not so
2053 parameterized) set for an individual thread. These features were added
2054 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
2056 * The functions getresuid, getresgid, setresuid, and setresgid, which
2057 have long been available on Linux, are now declared in <unistd.h>
2058 and are now also available on the Hurd.
2060 * ELF thread-local storage support (TLS) now works on x86-64.
2062 * The new dynamic string token $LIB is expanded in shared library names.
2063 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
2065 * Aldy Hernandez contributed complete software floating point support for
2066 PowerPC machines with no FPU.
2068 * fexecve is implemented on Linux.
2070 * The `btowc' function should work at least twice as fast due to
2071 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
2073 * With approriate thread add-ons cancelable functions are now implemented
2074 in libc.so as well. No need to call the function in libpthread. This
2075 change allowed to finally disable the incorrect and expensive handling
2076 of weak definition in ld.so.
2078 * Yet more PLT entries in libc.so have been removed. We finally arrived
2079 at the bare minimum. Startup times improved appropriately.
2081 * Support for the new Linux/x86 system call interface was added. The
2082 AT_SYSINFO auxiliary vector entry is recognized and handled.
2086 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
2089 * iconv (the program and the interface) now accepts empty names (excluding
2090 options like //TRANSLIT) to mean "use charset of current locale".
2092 * localedef can now transliterate characters in strings which are not in
2093 the provided charmap. The information from the input locale is used.
2095 * Prelinking support was added for ELF targets. This requires additional
2096 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
2098 * Read-only stdio streams now use mmap to speed up operation by eliminating
2099 copying and buffer underflows. To use add 'm' to the mode string of
2100 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
2102 * The malloc functions were completely rewritten by Wolfram Gloger based
2103 on Doug Lea's malloc-2.7.0.c.
2105 * Isamu Hasegawa contributed a completely new and POSIX-conformant
2106 implementation of regex.
2108 * Bruno Haible upgraded the iconv and locale implementation to support
2111 * Contents of the LC_* and LANG environment variables in the CEN style are
2112 not recognized anymore. It never was used. Change by Ulrich Drepper.
2114 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
2115 thread-local storage (TLS) ABI on some platforms.
2116 Changes by Ulrich Drepper. SH support by Kaz Kojima.
2118 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
2119 EUC-JISX0213, and TSCII.
2121 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
2122 BSD-compatible interface for getting all network interface addresses.
2123 Implementation for IPv4 by Roland McGrath.
2125 * Loading of locale data is faster due to the introduction of a locale
2126 archive. Implemented by Roland McGrath and Ulrich Drepper.
2128 * Startup times are significantly reduced by not using exported functions
2129 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
2132 * Steven Munroe contributed a port to PowerPC64/Linux.
2136 * The Hurd now uses the GNU libio implementation of stdio rather than the
2137 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
2139 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
2140 with the same behavior as the Linux system call of the same name.
2144 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
2145 128-bit long double format.
2147 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
2148 IBM1161, and IBM1162 charsets.
2150 * Andreas Jaeger contributed a port to x86-64/Linux.
2152 * Peter Bruin contributed a port to PowerPC/Hurd.
2154 * libc functions using I/O streams now can handle wide-oriented streams
2157 * optimizations in the dynamic linker. Binaries created by recent binutils
2158 versions start up quicker due to reduced time spent on relocations.
2160 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
2164 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
2165 asinh, atanh, j0 for the 128-bit long double format.
2167 * Bruno Haible updated all the code handling Unicode in some form to
2168 support Unicode 3.1.
2170 * Speed of regex for single-byte locales is back to previous levels.
2171 Patch by Isamu Hasegawa.
2173 * Alpha, SPARC, and IA-64 now also using floating stacks.
2175 * Startup time of internationalized applications greatly improved through
2176 iconv cache. Use iconvconfig to generate the cache file.
2177 Contributed by Ulrich Drepper.
2179 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
2180 severe performance problems. Patch by David Mosberger.
2182 * The Hurd port got a lot more functionality like AIO, various stdio
2183 extensions, etc. Mainly done by Roland McGrath.
2185 * mtrace can now lookup symbols in shared libraries.
2189 * Intel's IA-64 math library is largely integrated. It provides fast and
2190 accurate implementatations for most basic and standard math functions
2191 in float, double, and long double format.
2193 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
2194 and asin for the 96-bit long double format and asin, log, tan for the
2195 128-bit long double format.
2197 * The beginning of a last-bit accurate math library by IBM Haifa were added.
2198 The basic double functions exist today. Contributed by Abraham Ziv
2199 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
2200 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
2202 * An asynchronous name lookup library was added. The interface is designed
2203 after POSIX AIO. The proposal was circulated beforehand to get comments.
2204 No negative ones came in. Implemented by Ulrich Drepper.
2206 * Port to S390/64bit contributed by Martin Schwidefsky
2207 <schwidefsky@de.ibm.com>.
2209 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
2210 of functions for Linux/IA-64.
2212 * The RPC code is now thread safe. Threads can now use the same service
2213 of different services at the same time. Patch by Eric Norum
2214 <eric.norum@usask.ca> with some help by Ulrich Drepper.
2216 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
2217 family of functions for Linux/S390.
2219 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
2220 of functions for Linux/x86.
2222 * Port to Linux/CRIS contributed by Axis Communications.
2226 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
2227 we can now check for namespace violations and missing declarations. The
2228 result is that almost all headers are now Unix-compliant (as defined in
2229 the upcoming XPG6). The negative side is that some programs might need
2230 corrections, too, if they depend on the incorrect form of the headers in
2231 previous versions which defined too many symbols and included too many
2234 * regex now handles multibyte character sets correctly.
2235 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
2237 * iconv (the program) does now conform to the upcoming XPG6 and handles
2238 charmaps. Instead of the charset names the path of charmaps can be
2239 provided and the conversion happens based on this data.
2240 Contributed by Ulrich Drepper.
2242 * The locale program now provides detailed information about the installed
2247 only lists the names of the supported locales
2251 provides details such as country, language, and codeset name.
2252 Contributed by Ulrich Drepper.
2256 * The gencat program now parses the input file according to the charset
2257 selected by the LC_CTYPE category. This is important for stateful
2258 character sets. To make generating catalogs easier there is a way
2259 to overwrite the charset selected by the locale: before the first
2260 message or $ quote line the catalog can contain a line like
2262 $ codeset=ISO-8859-2
2264 to select the charset (ISO-8859-2 in this case).
2266 Implemented by Shinya Hanataka and Ulrich Drepper.
2268 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
2269 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
2270 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
2272 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
2273 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
2275 * The LANGUAGE environment variable is now ignored unless the locale is
2276 changed from the default "C" locale.
2278 * The usual bug fixes.
2282 * Greg McGary added runtime support for bounds checking using gcc's
2283 new -fbounded-pointers option. ix86 target is complete. PowerPC
2286 * Thorsten Kukuk added secure mode support to nscd.
2288 * The Berkeley db libraries have been removed.
2290 Related, the nss_db module is now in a separate package since it
2291 obviously requires a database library being available.
2293 * Wide character I/O streams implemented by Ulrich Drepper.
2295 * Functions from the extended socket API added by Ulrich Drepper.
2297 * Functions feenableexcept and fedisableexcept to control the
2298 behaviour of individual exceptions have been added by Andreas Jaeger.
2300 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
2302 * The resolver code has been updated from bind 8.2.3-T5B which supports
2303 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
2306 This change could in some situations effect backward compatibility. Since
2307 now `_res' is a thread-local instead of a global variable, modifying it
2308 in one thread does not have any effect in other threads.
2310 The resolver library was also extended to allow IPv6 as the transport
2311 protocol for the requests. This work was done by Stig Venaas.
2313 * Compatibility code for K&R C compilers has been removed from the
2314 header files. A ISO C compiler is needed to use the library
2315 (conforming to either C89 or C99 standard).
2317 * Complete rewrite of the localedef program to support multibyte character
2318 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
2319 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
2320 Implemented by Ulrich Drepper.
2322 Bruno Haible significantly improved the generation and use of the data
2323 structures for the wide character tables.
2325 * Plural handling in gettext implemented by Ulrich Drepper.
2327 * The utmp daemon has been removed.
2329 * The port to MIPS-Linux has been finished by Andreas Jaeger.
2331 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
2334 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
2336 * POSIX barriers implemented by Kaz Kylheku.
2338 * POSIX spawn function family implemented by Ulrich Drepper.
2340 * POSIX spinlocks are now available.
2342 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
2344 * the configure option --enable-kernel=X.Y.Z allows to strip out
2345 compatibility for kernel versions before X.Y.Z. This is currently only
2346 implemented for Linux.
2348 * the sockaddr_in6 structure changed. The IPv6 working group added a new
2349 field sin6_scope_id. This means that all programs using IPv6 should be
2350 recompiled. Don't expect binary compatibility with previous glibc
2353 * various conversion modules for IBM character sets contributed by
2356 * IA-64 port by Jes Sorensen and HJ Lu.
2370 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
2372 * New xdr functions are added; some rpc functions are now 64bit clean.
2374 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
2376 * Fixed known incompatibilities with glibc 2.0.
2378 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
2380 * Optimized a number of functions (especially the ELF dynamic loader).
2382 * Update timezone data files.
2384 * lots of charmaps corrections
2386 * some new locale definitions and charmaps
2391 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
2392 conform to POSIX member type requirements. Symbol versions have been
2393 adjusted as needed within the library, and for direct use by applications,
2394 but there is potential for problems if third-party libraries use
2395 struct timeval as part of their interface. This does not present
2396 a problem for X and other "essential" system libraries.
2398 * An additional locale model to support C++ Standard Library locale
2399 model and probably more was implemented by Ulrich Drepper.
2401 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
2404 * Miles Bader provided the `argp' function family to support hierachical
2405 command line argument parsing, layered on top of getopt.
2407 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
2409 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
2412 * scanf recognizes the %a and %A format for scanning floating point numbers.
2414 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
2415 information and interfaces for the available integer types.
2417 * about 130 new math functions were added to implement the ISO C9x math
2420 * the new header <complex.h> contains definitions of the complex math
2421 functions from ISO C 9X.
2423 * the new header <tgmath.h> defines generic macros to use complex or
2424 real valued functions.
2426 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
2428 * Andreas Jaeger provided a test suite for the math library.
2430 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
2432 * Ulrich Drepper added character set conversion functions (iconv).
2434 * Optimized string functions have been added.
2436 * The localedata addon is now part of glibc.
2438 * An implementation of profiling shared libraries was added by Ulrich Drepper.
2440 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
2441 daemon for NSS (nscd).
2443 Missing a better place here are some numbers on improvements. Under
2444 Linux 2.1.125 un-tar-ing the kernel sources takes
2448 using local files 12.19s 6.88s 22.91s
2450 using NIS 13.92s 8.91s 26.34s
2452 using NIS & nscd 10.37s 7.34s 25.30s
2454 using NIS+ 27.57s 30.37s 640.46s
2456 using NIS+ & nscd 10.25s 7.83s 26.51s
2458 using NIS & old nscd [1] 13.83s 8.32s 29.60s
2460 Keep in mind that non-namelookup related operations dominate above times.
2461 It was just a common complain that using NIS+ unpacking the kernel is
2464 [1] The old nscd implementation is not available anymore since it was
2465 distributed with glibc up to version 2.0.98 and thus is now replaced.
2467 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
2469 * Mark Kettenis provided a Hesiod NSS module.
2471 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
2472 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
2474 * rcmd can now handle netgroups (Dick Streefland).
2476 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
2479 * Support for the IPv6 protocol has been added to the socket API, as per the
2480 latest draft standards.
2482 * Support for Linux 2.2 has been added.
2484 * Interface changes relative to the latest 2.0.x release:
2485 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2486 addseverity NEW: Unix98
2487 alphasort64 NEW: LFS
2488 argp_err_exit_status NEW: argp, GNU ext
2489 argp_error NEW: argp, GNU ext
2490 argp_failure NEW: argp, GNU ext
2491 argp_help NEW: argp, GNU ext
2492 argp_parse NEW: argp, GNU ext
2493 argp_program_bug_address NEW: argp, GNU ext
2494 argp_program_version NEW: argp, GNU ext
2495 argp_program_version_hook NEW: argp, GNU ext
2496 argp_state_help NEW: argp, GNU ext
2497 argp_usage NEW: argp, GNU ext
2498 authdes_create NEW: Secure RPC
2499 authdes_getucred NEW: Secure RPC
2500 authdes_pk_create NEW: Secure RPC
2501 backtrace NEW: GNU ext.
2502 backtrace_symbols NEW: GNU ext.
2503 backtrace_symbols_fd NEW: GNU ext.
2505 cacosf NEW: ISO C 9x
2506 cacosh NEW: ISO C 9x
2507 cacoshf NEW: ISO C 9x
2508 cacoshl NEW: ISO C 9x
2509 cacosl NEW: ISO C 9x
2516 casinf NEW: ISO C 9x
2517 casinh NEW: ISO C 9x
2518 casinhf NEW: ISO C 9x
2519 casinhl NEW: ISO C 9x
2520 casinl NEW: ISO C 9x
2522 catanf NEW: ISO C 9x
2523 catanh NEW: ISO C 9x
2524 catanhf NEW: ISO C 9x
2525 catanhl NEW: ISO C 9x
2526 catanl NEW: ISO C 9x
2527 cbc_crypt NEW: Secure RPC
2531 ccoshf NEW: ISO C 9x
2532 ccoshl NEW: ISO C 9x
2538 cimagf NEW: ISO C 9x
2539 cimagl NEW: ISO C 9x
2540 clearerr_locked REMOVED
2541 clntunix_create NEW: sunrpc ext
2543 clog10 NEW: ISO C 9x
2544 clog10f NEW: ISO C 9x
2545 clog10l NEW: ISO C 9x
2555 cprojf NEW: ISO C 9x
2556 cprojl NEW: ISO C 9x
2558 crealf NEW: ISO C 9x
2559 creall NEW: ISO C 9x
2564 csinhf NEW: ISO C 9x
2565 csinhl NEW: ISO C 9x
2568 csqrtf NEW: ISO C 9x
2569 csqrtl NEW: ISO C 9x
2573 ctanhf NEW: ISO C 9x
2574 ctanhl NEW: ISO C 9x
2576 des_setparity NEW: Secure RPC
2577 ecb_crypt NEW: Secure RPC
2578 endutxent NEW: Unix98
2580 exp10f NEW: ISO C 9x
2581 exp10l NEW: ISO C 9x
2585 fattach NEW: STREAMS
2586 fdetach NEW: STREAMS
2590 feclearexcept NEW: ISO C 9x
2591 fegetenv NEW: ISO C 9x
2592 fegetexceptflag NEW: ISO C 9x
2593 fegetround NEW: ISO C 9x
2594 feholdexcept NEW: ISO C 9x
2596 feraiseexcept NEW: ISO C 9x
2597 ferror_locked REMOVED
2598 fesetenv NEW: ISO C 9x
2599 fesetexceptflag NEW: ISO C 9x
2600 fesetround NEW: ISO C 9x
2601 fetestexcept NEW: ISO C 9x
2602 feupdateenv NEW: ISO C 9x
2603 fflush_locked REMOVED
2607 fgets_unlocked NEW: GNU ext.
2608 fileno_locked REMOVED
2620 fputc_locked REMOVED
2621 fputs_unlocked NEW: GNU ext.
2622 fread_unlocked NEW: GNU ext.
2627 fstatvfs NEW: Unix98
2631 ftruncate64 NEW: LFS
2633 fwrite_unlocked NEW: GNU ext.
2634 gai_strerror NEW: IPv6
2638 getchar_locked REMOVED
2640 getdate_err NEW: Unix98
2641 getdate_r NEW: GNU ext.
2643 getnameinfo NEW: IPv6
2644 getnetname NEW: Secure RPC
2645 getpmsg NEW: STREAMS
2646 getpt NEW: Unix98 PTY
2647 getrlimit64 NEW: LFS
2648 getutxent NEW: Unix98
2649 getutxid NEW: Unix98
2650 getutxline NEW: Unix98
2651 glob64 NEW: GNU ext.
2652 globfree64 NEW: GNU ext.
2653 gnu_get_libc_release NEW: GNU ext.
2654 gnu_get_libc_version NEW: GNU ext.
2655 grantpt NEW: Unix98 PTY
2656 host2netname NEW: Secure RPC
2658 iconv_close NEW: iconv
2659 iconv_open NEW: iconv
2660 if_freenameindex NEW: IPv6
2661 if_indextoname NEW: IPv6
2662 if_nameindex NEW: IPv6
2663 if_nametoindex NEW: IPv6
2664 in6addr_any NEW: IPv6
2665 in6addr_loopback NEW: IPv6
2666 inet6_isipv4mapped NEW: IPv6
2667 isastream NEW: STREAMS
2668 iswblank NEW: GNU ext.
2669 key_decryptsession NEW: Secure RPC
2670 key_decryptsession_pk NEW: Secure RPC
2671 key_encryptsession NEW: Secure RPC
2672 key_encryptsession_pk NEW: Secure RPC
2673 key_gendes NEW: Secure RPC
2674 key_get_conv NEW: Secure RPC
2675 key_secretkey_is_set NEW: Secure RPC
2676 key_setnet NEW: Secure RPC
2677 key_setsecret NEW: Secure RPC
2678 llrint NEW: ISO C 9x
2679 llrintf NEW: ISO C 9x
2680 llrintl NEW: ISO C 9x
2681 llround NEW: ISO C 9x
2682 llroundf NEW: ISO C 9x
2683 llroundl NEW: ISO C 9x
2688 lrintf NEW: ISO C 9x
2689 lrintl NEW: ISO C 9x
2690 lround NEW: ISO C 9x
2691 lroundf NEW: ISO C 9x
2692 lroundl NEW: ISO C 9x
2694 makecontext NEW: Unix98
2695 mempcpy NEW: GNU ext.
2698 modify_ldt NEW: kernel
2702 nearbyint NEW: ISO C 9x
2703 nearbyintf NEW: ISO C 9x
2704 nearbyintl NEW: ISO C 9x
2705 netname2host NEW: Secure RPC
2706 netname2user NEW: Secure RPC
2707 nexttoward NEW: ISO C 9x
2708 nexttowardf NEW: ISO C 9x
2709 nexttowardl NEW: ISO C 9x
2713 passwd2des NEW: Secure RPC
2715 pow10f NEW: GNU ext.
2716 pow10l NEW: GNU ext.
2719 printf_size NEW: GNU ext.
2720 printf_size_info NEW: GNU ext.
2721 profil_counter REMOVED
2722 pthread_mutexattr_getkind_np REPLACED
2723 pthread_mutexattr_setkind_np REPLACED
2724 ptsname NEW: Unix98 PTY
2725 ptsname_r NEW: Unix98 PTY
2727 putchar_locked REMOVED
2728 putgrent NEW: GNU ext.
2730 putpmsg NEW: STREAMS
2731 pututxline NEW: Unix98
2735 readdir64_r NEW: LFS
2736 remquo NEW: ISO C 9x
2737 remquof NEW: ISO C 9x
2738 remquol NEW: ISO C 9x
2740 roundf NEW: ISO C 9x
2741 roundl NEW: ISO C 9x
2743 scalbln NEW: ISO C 9x
2744 scalblnf NEW: ISO C 9x
2745 scalblnl NEW: ISO C 9x
2747 sendfile NEW: kernel
2748 setcontext NEW: Unix98
2749 setrlimit64 NEW: LFS
2750 setutxent NEW: Unix98
2752 sigignore NEW: Unix98
2753 sigqueue NEW: POSIX.1b
2754 sigrelse NEW: Unix98
2755 sigset NEW: POSIX.1b
2756 sigtimedwait NEW: POSIX.1b
2757 sigwaitinfo NEW: POSIX.1b
2758 sincos NEW: GNU ext.
2759 sincosf NEW: GNU ext.
2760 sincosl NEW: GNU ext.
2764 strcasestr NEW: GNU ext.
2765 strtoimax NEW: ISO C 9x
2766 strtoumax NEW: ISO C 9x
2767 strverscmp NEW: GNU ext.
2768 svcauthdes_stats NEW: Secure RPC
2769 svcunix_create NEW: sunrpc etx
2770 svcunixfd_create NEW: sunrpc ext
2771 swapcontext NEW: Unix98
2772 tcgetsid NEW: Unix98 PTY
2773 tdestroy NEW: GNU ext.
2774 tgamma NEW: ISO C 9x
2775 tgammaf NEW: ISO C 9x
2776 tgammal NEW: ISO C 9x
2780 truncf NEW: ISO C 9x
2781 truncl NEW: ISO C 9x
2783 unlockpt NEW: Unix98 PTY
2784 updwtmpx NEW: Unix98
2785 user2netname NEW: Secure RPC
2786 utmpxname NEW: Unix98
2787 versionsort NEW: GNU ext.
2788 versionsort64 NEW: GNU ext.
2790 wcscasecmp NEW: GNU ext.
2791 wcsncasecmp NEW: GNU ext.
2792 wcsnlen NEW: GNU ext.
2793 wcstoimax NEW: ISO C 9x
2794 wcstoll NEW: ISO C 9x
2795 wcstoull NEW: ISO C 9x
2796 wcstoumax NEW: ISO C 9x
2798 wordexp NEW: POSIX.2
2799 wordfree NEW: POSIX.2
2800 write_profiling REMOVED
2801 xdecrypt NEW: Secure RPC
2802 xdr_authdes_cred NEW: Secure RPC
2803 xdr_authdes_verf NEW: Secure RPC
2804 xdr_cryptkeyarg NEW: Secure RPC
2805 xdr_cryptkeyarg2 NEW: Secure RPC
2806 xdr_cryptkeyres NEW: Secure RPC
2807 xdr_getcredres NEW: Secure RPC
2808 xdr_key_netstarg NEW: Secure RPC
2809 xdr_key_netstres NEW: Secure RPC
2810 xdr_keybuf NEW: Secure RPC
2811 xdr_keystatus NEW: Secure RPC
2812 xdr_netnamestr NEW: Secure RPC
2813 xdr_sizeof NEW: Secure RPC
2814 xdr_unixcred NEW: sunrpc ext
2815 xencrypt NEW: Secure RPC
2816 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2827 * inet_ntoa is thread-safe
2829 * updwtmp is moved from libutil to libc
2831 * rewrite of cbrt function
2833 * update of timezone data
2847 * add atoll function
2849 * fix complex problems in Berkeley DB code
2851 * fix math functions
2855 * fixed lots of header problems (especially Linux/GNU specific)
2857 * dynamic loader preserves all registers
2859 * Roland McGrath provided support for handling of auxiliary objects in
2860 the ELF dynamic loader.
2862 * support for parallel builds is improved
2866 * GNU extensions are no longer declared by default. To enable them you
2867 must define the macro `_GNU_SOURCE' in your program or compile with
2870 * The library has changed from using GNU ld symbol aliases to using weak
2871 symbols where available. The ELF object file format supports weak
2872 symbols; GNU ld also supports weak symbols in the a.out format. (There
2873 is also now support for other GNU ld extensions in ELF. Use the
2874 `--with-elf' option to configure to indicate you have ELF, and
2875 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2876 of many files which contained only symbol aliases, reducing the size of
2877 the source and the compiled library; many other files were renamed to
2878 less cryptic names previously occupied by the symbol alias files.
2879 There is a new header file <elf.h> for programs which operate on
2880 files in the ELF format.
2882 * Converted to Autoconf version 2, so `configure' has more options.
2883 Run `configure --help' to see the details.
2885 * The library can now be configured to build profiling, highly-optimized
2886 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2887 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2888 `configure' enable building these extra libraries. The shared library is
2889 built by default when using both ELF and GNU ld. When shared libraries
2890 are enabled, the new library `-ldl' is available for arbitrary run-time
2891 loading of shared objects; its interface is defined in <dlfcn.h>. The
2892 new header file <link.h> gives access to the internals of the run-time
2893 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2894 application of same name on other systems and it provides information
2895 about dynamically linked binaries.
2897 * The C library now provides the run-time support code for profiling
2898 executables compiled with `-pg'. Programs can control the profiling code
2899 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2900 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2901 the support for this file format was contributed by David Mosberger-Tang.
2903 * The math code has been replaced with a math library based on fdlibm from
2904 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2905 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2906 functions. The math functions now reside in a separate library, so
2907 programs using them will need to use `-lm' their linking commands.
2909 * John C. Bowman contributed optimized ix87 assembler inline functions.
2911 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2912 mechanism similar to that found in Solaris 2. This is now used for the
2913 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2914 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2915 file controls what services are used for each individual database. This
2916 works by loading shared libraries with names specified in `nsswitch.conf',
2917 so service modules can be changed or added at any time without even
2918 relinking any program. Currently there are the file, db, and NIS based
2919 NSS services available.
2921 * The new functions `strtoq' and `strtouq' parse integer values from
2922 strings, like `strtol' and `strtoul', but they return `long long int' and
2923 `unsigned long long int' values, respectively (64-bit quantities).
2925 * The new functions `strtof' and `strtold' parse floating-point values from
2926 strings, like `strtod', but they return `float' and `long double' values,
2927 respectively (on some machines `double' and `long double' are the same).
2929 * Ulrich Drepper has contributed new implementations of the floating-point
2930 printing and reading code used in the `printf' family of functions and
2931 `strtod', `strtof', and `strtold'. These new functions are perfectly
2932 accurate, and much faster than the old ones.
2934 * The implementation of the POSIX locale model was completely rewritten by
2935 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2936 to compile the POSIX locale definition.
2938 * The former dummy implementations of the strcoll and strxfrm function are
2939 now replaced by fully functional code contributed by Ulrich Drepper. The
2940 collation information comes from the POSIX locale definitions.
2942 * The new header <langinfo.h> defines an interface for accessing
2943 various locale-dependent data (using the locale chosen with `setlocale').
2945 * Ulrich Drepper has contributed a new suite of functions for operation on
2946 wide-character and multibyte-character strings, in <wchar.h>;
2947 and classification and case conversion of wide characters, in <wctype.h>.
2948 These new functions are conforming to the ISO C, Amendement 1 specification.
2950 * There is now a second implementation of the standard I/O library available.
2951 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2952 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2954 * You can now use positional parameter specifications in format strings
2955 for the `printf' and `scanf' families of functions. For example,
2956 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2957 ``Number 6, Mr Jones''. This is mainly useful when providing different
2958 format strings for different languages, whose grammars may dictate
2959 different orderings of the values being printed. To support this
2960 feature, the interface for `register_printf_handler' has changed; see
2961 the header file <printf.h> for details.
2963 * The `printf' and `scanf' families of functions now understand a new
2964 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2965 to group numbers as indicated by the locale; for `scanf' and friends, this
2966 says to accept as valid only a number with all the proper grouping
2967 separators in the right places. In the default "C" locale, numbers are
2968 not grouped; but locales for specific countries will define the usual
2969 conventions (i.e. separate thousands with `,' in the US locale).
2971 * The pgrp functions have been regularized, slightly incompatibly but much
2972 less confusingly. The core functions are now `getpgid' and `setpgid',
2973 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2974 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2975 provided for compatibility. There is no longer an incompatible `getpgrp'
2976 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2978 * The new header file <fts.h> and suite of functions simplify programs that
2979 operate on directory trees. This code comes from 4.4 BSD.
2981 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2982 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2983 NSS scheme used in glibc.
2985 * There is a new malloc debugging hook `__memalign_hook'.
2987 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2988 `unsigned int' in <sys/types.h>. These are for compatibility only and
2989 their use is discouraged.
2991 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2992 done differently, so that it works even without GNU ld.
2994 * New function `euidaccess' checks allowed access to a file like `access',
2995 but using the effective IDs instead of the real IDs.
2997 * The time zone data files have been updated for the latest and greatest
2998 local time conventions of the countries of the world.
3000 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
3003 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
3004 for formatting floating-point numbers. They are provided only for
3005 compatibility; new programs should use `sprintf' instead. There are
3006 also equivalent function for the `long double' floating-point type and
3007 all functions also exist in a reentrant form.
3009 * The new auxiliary library `-lutil' from 4.4 BSD contains various
3010 functions for maintaining the login-record files (primarily of use to
3011 system programs such as `login'), and convenient functions for
3012 allocating and initializing a pseudo-terminal (pty) device.
3014 * Ulrich Drepper has contributed new support for System V style
3015 shared memory and IPC on systems that support it.
3017 * Ulrich Drepper has contributed several miscellaneous new functions found
3018 in System V: The `hsearch' family of functions provide an effective
3019 implementation of hash tables; `a64l' and `l64a' provide a very simple
3020 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
3023 * Ulrich Drepper has contributed new reentrant counterparts for the
3024 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
3026 * Ulrich Drepper has contributed new, highly-optimized versions of several
3027 string functions for the i486/Pentium family of processors.
3029 * Ulrich Drepper has updated the Linux-specific code, based largely
3030 on work done in Hongjiu Lu's version of GNU libc for Linux.
3031 The GNU library now supports Linux versions 2.0.10 and later,
3032 using the ELF object file format (i[3456]86-*-linux).
3034 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
3036 * David Mosberger-Tang and Richard Henderson have ported the C library
3037 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
3038 dynamic linking support for ELF/Alpha.
3040 * Richard Henderson contributed several Alpha optimized assembler function
3041 for arithmetic and string handling.
3043 * Ulrich Drepper has contributed a new set of message catalog functions to
3044 support multiple languages using the <libintl.h> interface, for use with
3045 his new package GNU gettext. Translation volunteers have contributed
3046 catalogs of the library's messages in Spanish, German, and Korean.
3048 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
3049 program and the `catgets' function for reading the catalog files it
3050 creates. (The <libintl.h> interface is preferred; we include the
3051 <nl_types.h> interface using `catgets' only for source compatibility with
3052 programs already written to use it.)
3054 * New header file <values.h> gives SVID-compatible names for <limits.h>
3057 * Various new macros, declarations, and small header files for compatibility
3060 * New function `group_member' is a convenient way to check if a process has
3061 a given effective group ID.
3063 * When using GCC 2.7 and later, the socket functions are now declared in a
3064 special way so that passing an argument of type `struct sockaddr_in *',
3065 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
3066 `struct sockaddr *' type, does not generate a type-clash warning.
3068 * New function `error' declared in header file <error.h> is a convenient
3069 function for printing error messages and optionally exiting; this is the
3070 canonical function used in GNU programs. The new functions `err', `warn',
3071 and friends in header file <err.h> are the canonical 4.4 BSD interface for
3072 doing the same thing.
3074 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
3075 POSIX.2 `glob' function to do ~ and {...} expansion.
3077 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
3078 `clearenv' which is used in POSIX.9 is also available.
3080 * New function `getsid' returns session ID number on systems that support it.
3082 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
3083 files <db.h> and <mpool.h> provide a rich set of functions for several
3084 types of simple databases stored in memory and in files, and <ndbm.h> is
3085 an old `ndbm'-compatible interface using the `db' functions. Link with
3086 `-ldb' to get these functions.
3088 * New macro `strdupa' copies a string like `strdup', but uses local stack
3089 space from `alloca' instead of dynamic heap space from `malloc'.
3091 * New function `strnlen' is like `strlen' but searches only a given maximum
3092 number of characters for the null terminator. `stpncpy', `strndup' and
3093 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
3096 * New function `statfs' in header <sys/statfs.h>.
3098 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
3099 provide convenient functions for operating on blocks of null-terminated
3102 * A new suite of functions in <utmp.h> handle all the details of reading
3103 and writing the utmp file.
3105 * An implementation of the NIS/YP(tm) based NSS service was contributed by
3108 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
3109 completely POSIX compliant and also implemented the extended functionality
3110 to handle alternate digit representation and alternate era date formats.
3112 * Ulrich Drepper provided an implementation of the `strptime' function
3113 defined in XPG4.2 which transforms a string into a `struct tm' value.
3115 * Paul Eggert provided the tzselect shell script as part of the timezone
3116 code. The shell script makes it easy to select the correct timezone
3119 * The implementation of the malloc family of functions is completely replaced
3120 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
3121 The implementation uses the mmap function (if available) and it is
3122 optimized for the use in multi threaded programs.
3124 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
3125 functions. This new functionality is usable by specifying a special
3126 salt string and it is compatible with implementation on *BSD systems.
3128 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
3129 `getsubopt' to handle second level command line options, `bsd_signal'
3130 to access BSD style `signal' functionality, the obsolete `regexp' style
3133 * the `lchown' function is available on system which support this
3136 * The implementation of the shadow password handling function was contributed
3139 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
3141 * POSIX.1g support was added. The <sys/select.h> header is available,
3142 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
3143 implementation of `getaddrinfo'.
3147 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
3149 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
3150 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
3152 * The new function `daemon' from 4.4 BSD is useful for server programs that
3153 want to put themselves in the background.
3155 * Joel Sherrill has contributed support for several standalone boards that
3156 run without an operating system.
3158 * `printf', `scanf' and friends now accept a `q' type modifier for long
3159 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
3161 * All of the code taken from BSD (notably most of the math and networking
3162 routines) has been updated from the BSD 4.4-Lite release.
3164 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
3166 * The new functions `getdomainname' and `setdomainname' fetch or change the
3167 YP/NIS domain name. These are system calls which exist on systems which
3170 * The time zone data files have been updated for the latest international
3173 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
3174 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
3178 * The C library now includes support for Sun RPC, from Sun's free
3179 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
3180 are included. (There is still no support for YP.)
3182 * Tom Quinn has contributed a port of the C library to SGI machines running
3183 Irix 4 (mips-sgi-irix4).
3185 * The new `lockf' function is a simplified interface to the locking
3186 facilities of `fcntl', included for compatibility.
3188 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
3190 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
3192 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
3195 * The error message printed by `assert' for a failed assertion now includes
3196 the name of the program (if using GNU ld) and the name of the calling
3197 function (with versions of GCC that support this).
3199 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
3201 * The library now includes the <sys/mman.h> header file and memory
3202 management functions `mmap', `munmap', `mprotect', `msync', and
3203 `madvise', on systems that support those facilities.
3205 * The interface for `mcheck' has changed slightly: the function called to
3206 abort the program when an allocation inconsistency is detected now takes
3207 an argument that indicates the type of failure. The new function
3208 `mprobe' lets you request a consistency check for a particular block at
3209 any time (checks are normally done only when you call `free' or `realloc'
3212 * It is now possible to easily cross-compile the C library, building on one
3213 system a library to run on another machine and/or operating system. All
3214 you need to do is set the variable `HOST_CC' in `configparms' to the
3215 native compiler for programs to run on the machine you are building on (a
3216 few generator programs are used on Unix systems); set `CC' to the
3219 * The new function `fexecve' (only implemented on the GNU system) executes
3220 a program file given a file descriptor already open on the file.
3224 * Brendan Kehoe has contributed most of a port to the DEC Alpha
3225 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
3227 * You can set the variable `libprefix' in `configparms' to specify a prefix
3228 to be prepended to installed library files; this makes it easy to install
3229 the GNU C library to be linked as `-lgnuc' or whatever.
3231 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
3232 copies a limited number of characters from a string, and returns the
3233 address of the last character written.
3235 * You no longer need to check for whether the installed `stddef.h' is
3236 compatible with the GNU C library. configure now checks for you.
3238 * You can now define a per-stream `fileno' function to convert the
3239 stream's cookie into an integral file descriptor.
3241 * ``malloc (0)'' no longer returns a null pointer. Instead, it
3242 allocates zero bytes of storage, and returns a unique pointer which
3243 you can pass to `realloc' or `free'. The behavior is undefined if
3244 you dereference this pointer.
3246 * The C library now runs on Sony NEWS m68k machines running either
3247 NewsOS 3 or NewsOS 4.
3249 * The new `syscall' function is a system-dependent primitive function
3250 for invoking system calls. It has the canonical behavior on Unix
3251 systems, including unreliable return values for some calls (such as
3252 `pipe', `fork' and `getppid').
3254 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
3255 to `EAGAIN', which is the preferred name. On systems whose kernels
3256 use two distinct codes, the C library now translates EWOULDBLOCK to
3257 EAGAIN in every system call function.
3261 * The GNU C Library Reference Manual is now distributed with the library.
3262 `make dvi' will produce a DVI file of the printed manual.
3263 `make info' will produce Info files that you can read on line using C-h i
3264 in Emacs or the `info' program.
3265 Please send comments on the manual to bug-glibc-manual@gnu.org.
3267 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
3269 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
3271 * Jason Merrill has contributed a port to the Sequent Symmetry running
3272 Dynix version 3 (i386-sequent-dynix).
3274 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
3275 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
3277 * New function `memory_warnings' lets you arrange to get warnings when
3278 malloc is running out of memory to allocate, like Emacs gives you.
3280 * The C library now contains the relocating allocator used in Emacs 19 for
3281 its editing buffers. This allocator (ralloc) minimizes allocation
3282 overhead and fragmentation by moving allocated regions around whenever it
3283 needs to. You always refer to a ralloc'd region with a "handle" (a
3284 pointer to a pointer--an object of type `void **').
3286 * There is a new `printf' format: `%m' gives you the string corresponding
3287 to the error code in `errno'.
3289 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
3290 or `%[' conversion, but instead of filling in a fixed-sized buffer you
3291 pass, the `a' modifier says to fill in a `char **' you pass with a
3294 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
3295 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
3296 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
3298 * `mkstemp' is a traditional Unix function to atomically create and open a
3299 uniquely-named temporary file.
3303 * The standard location for the file that says what the local timezone is
3304 has changed again. It is now `/usr/local/etc/localtime' (or more
3305 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
3307 * The distribution no longer contains any files with names longer than 14
3310 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
3311 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
3313 * New functions `ttyslot' and `syslog' from 4.4 BSD.
3317 * The configuration process has changed quite a bit. The `configure'
3318 script is now used just like the configuration scripts for other GNU
3319 packages. The `sysdeps' directory hierarchy is much rearranged.
3320 The file `INSTALL' explains the new scheme in detail.
3322 * The header files no longer need to be processed into ANSI C and
3323 traditional C versions. There is just one set of files to install, and
3324 it will work with ANSI or old C compilers (including `gcc -traditional').
3326 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
3327 MIPS DECStation running Ultrix 4.
3329 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
3330 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
3331 made itself into a shared library.
3333 * Yet further improved support for the i386, running 4.3 BSD-like systems
3334 (such as Mach 3 with the Unix single-server), or System V.
3336 * New function `strncasecmp' to do case-insensitive string comparison
3337 with limited length.
3339 * New function `strsep' is a reentrant alternative to `strtok'.
3341 * New functions `scandir' and `alphasort' for searching directories.
3343 * New function `setenv' is a better interface to `putenv'.
3345 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
3346 function for traversing a directory tree.
3348 * The GNU obstack package is now also part of the C library.
3349 The new function `open_obstack_stream' creates a stdio stream that
3350 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
3351 formatted output directly to an obstack.
3353 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
3354 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
3356 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
3358 * The new functions `strfry' and `memfrob' do mysterious and wonderful
3359 things to your strings.
3361 * There are some new test programs: test-fseek, testmb, and testrand.
3363 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
3364 These ports are not finished, but are a good starting place for really
3365 supporting those systems.
3367 * `/etc/localtime' is now the standard location for the file that says what
3368 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
3369 This follows the general principle that `/etc' is the place for all local
3370 configuration files.
3372 * The C library header files now use `extern "C"' when used by the C++
3373 compiler, so the C library should now work with C++ code.
3375 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
3376 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
3379 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
3380 function which uses the `merge sort' algorithm, and is said to be
3381 significantly faster than the old GNU `qsort' function. Merge sort is
3382 now the standard `qsort' function. The new algorithm can require a lot
3383 of temporary storage; so, the old sorting function is called when the
3384 required storage is not available.
3386 * The C library now includes Michael Glad's Ultra Fast Crypt, which
3387 provides the Unix `crypt' function, plus some other entry points.
3389 * The code and header files taken from 4.4 BSD have been updated with the
3390 latest files released from Berkeley.
3392 ----------------------------------------------------------------------
3393 Copyright information:
3395 Copyright (C) 1992-2016 Free Software Foundation, Inc.
3397 Permission is granted to anyone to make or distribute verbatim copies
3398 of this document as received, in any medium, provided that the
3399 copyright notice and this permission notice are preserved,
3400 thus giving the recipient permission to redistribute in turn.
3402 Permission is granted to distribute modified versions
3403 of this document, or of portions of it,
3404 under the above conditions, provided also that they
3405 carry prominent notices stating who last changed them.
3408 version-control: never