1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2017 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <https://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
12 * Optimized x86-64 asin, atan2, exp, expf, log, pow, atan, sin, sinf and
13 tan with FMA, contributed by Arjan van de Ven and H.J. Lu from Intel.
15 * Optimized x86-64 trunc and truncf for processors with SSE4.1.
17 * Optimized generic expf, exp2f, logf, log2f, powf and sinf.
19 * In order to support faster and safer process termination the malloc API
20 family of functions will no longer print a failure address and stack
21 backtrace after detecting heap corruption. The goal is to minimize the
22 amount of work done after corruption is detected and to avoid potential
23 security issues in continued process execution. Reducing shutdown time
24 leads to lower overall process restart latency, so there is benefit both
25 from a security and performance perspective.
27 * The abort function terminates the process immediately, without flushing
28 stdio streams. Previous glibc versions used to flush streams, resulting
29 in deadlocks and further data corruption. This change also affects
30 process aborts as the result of assertion failures.
32 * On platforms where long double has the IEEE binary128 format (aarch64,
33 alpha, mips64, s390 and sparc), the math library now implements _Float128
34 interfaces for that type, as defined by ISO/IEC TS 18661-3:2015. These
35 are the same interfaces added in version 2.26 for some platforms where
36 this format is supported but is not the format of long double.
38 * On platforms with support for _Float64x (aarch64, alpha, i386, ia64,
39 mips64, powerpc64le, s390, sparc and x86_64), the math library now
40 implements interfaces for that type, as defined by ISO/IEC TS
41 18661-3:2015. These are corresponding interfaces to those supported for
44 * The math library now implements interfaces for the _Float32, _Float64 and
45 _Float32x types, as defined by ISO/IEC TS 18661-3:2015. These are
46 corresponding interfaces to those supported for _Float128.
48 * glibc now implements the memfd_create and mlock2 functions on Linux.
50 * Support for memory protection keys was added. The <sys/mman.h> header now
51 declares the functions pkey_alloc, pkey_free, pkey_mprotect, pkey_set,
54 Deprecated and removed features, and other changes affecting compatibility:
56 * On GNU/Linux, the obsolete Linux constant PTRACE_SEIZE_DEVEL is no longer
57 defined by <sys/ptrace.h>.
59 * libm no longer supports SVID error handling (calling a user-provided
60 matherr function on error) or the _LIB_VERSION variable to control error
61 handling. (SVID error handling and the _LIB_VERSION variable still work
62 for binaries linked against older versions of the GNU C Library.) The
63 libieee.a library is no longer provided. math.h no longer defines struct
64 exception, or the macros X_TLOSS, DOMAIN, SING, OVERFLOW, UNDERFLOW,
65 TLOSS, PLOSS and HUGE.
67 * The libm functions pow10, pow10f and pow10l are no longer supported for
68 new programs. Programs should use the standard names exp10, exp10f and
69 exp10l for these functions instead.
71 * The mcontext_t type is no longer the same as struct sigcontext. On
72 platforms where it was previously the same, this changes the C++ name
73 mangling for interfaces involving this type.
75 * The add-ons mechanism for building additional packages at the same time as
76 glibc has been removed. The --enable-add-ons configure option is now
79 * The res_hnok, res_dnok, res_mailok and res_ownok functions now check that
80 the specified string can be parsed as a domain name.
82 * In the malloc_info output, the <heap> element may contain another <aspace>
83 element, "subheaps", which contains the number of sub-heaps.
85 * The libresolv function p_secstodate is no longer supported for new
88 Changes to build and runtime requirements:
90 * bison version 2.7 or later is required to generate code in the 'intl'
93 Security related changes:
95 CVE-2009-5064: The ldd script would sometimes run the program under
96 examination directly, without preventing code execution through the
97 dynamic linker. (The glibc project disputes that this is a security
98 vulnerability; only trusted binaries must be examined using the ldd
101 CVE-2017-15670: The glob function, when invoked with GLOB_TILDE,
102 suffered from a one-byte overflow during ~ operator processing (either
103 on the stack or the heap, depending on the length of the user name).
104 Reported by Tim Rühsen.
106 CVE-2017-15671: The glob function, when invoked with GLOB_TILDE,
107 would sometimes fail to free memory allocated during ~ operator
108 processing, leading to a memory leak and, potentially, to a denial
111 CVE-2017-15804: The glob function, when invoked with GLOB_TILDE and
112 without GLOB_NOESCAPE, could write past the end of a buffer while
113 unescaping user names. Reported by Tim Rühsen.
115 CVE-2017-17426: The malloc function, when called with an object size near
116 the value SIZE_MAX, would return a pointer to a buffer which is too small,
117 instead of NULL. This was a regression introduced with the new malloc
118 thread cache in glibc 2.26. Reported by Iain Buclaw.
120 The following bugs are resolved with this release:
122 [The release manager will add the list generated by
123 scripts/list-fixed-bugs.py just before the release.]
130 * A per-thread cache has been added to malloc. Access to the cache requires
131 no locks and therefore significantly accelerates the fast path to allocate
132 and free small amounts of memory. Refilling an empty cache requires locking
133 the underlying arena. Performance measurements show significant gains in a
134 wide variety of user workloads. Workloads were captured using a special
135 instrumented malloc and analyzed with a malloc simulator. Contributed by
136 DJ Delorie with the help of Florian Weimer, and Carlos O'Donell.
138 * Unicode 10.0.0 Support: Character encoding, character type info, and
139 transliteration tables are all updated to Unicode 10.0.0, using
140 generator scripts contributed by Mike FABIAN (Red Hat).
141 These updates cause user visible changes, especially the changes in
142 wcwidth for many emoji characters cause problems when emoji sequences
143 are rendered with pango, see for example:
144 https://bugzilla.gnome.org/show_bug.cgi?id=780669#c5
146 * Collation of Hungarian has been overhauled and is now consistent with "The
147 Rules of Hungarian Orthography, 12th edition" (Bug 18934). Contributed by
150 * Improvements to the DNS stub resolver, contributed by Florian Weimer:
152 - The GNU C Library will now detect when /etc/resolv.conf has been
153 modified and reload the changed configuration. The new resolver option
154 “no-reload” (RES_NORELOAD) disables this behavior.
156 - The GNU C Library now supports an arbitrary number of search domains
157 (configured using the “search” directive in /etc/resolv.conf);
158 previously, there was a hard limit of six domains. For backward
159 compatibility, applications that directly modify the ‘_res’ global
160 object are still limited to six search domains.
162 - When the “rotate” (RES_ROTATE) resolver option is active, the GNU C
163 Library will now randomly pick a name server from the configuration as a
164 starting point. (Previously, the second name server was always used.)
166 * The tunables feature is now enabled by default. This allows users to tweak
167 behavior of the GNU C Library using the GLIBC_TUNABLES environment variable.
169 * New function reallocarray, which resizes an allocated block (like realloc)
170 to the product of two sizes, with a guaranteed clean failure upon integer
171 overflow in the multiplication. Originally from OpenBSD, contributed by
172 Dennis Wölfing and Rüdiger Sonderfeld.
174 * New wrappers for the Linux-specific system calls preadv2 and pwritev2.
175 These are extended versions of preadv and pwritev, respectively, taking an
176 additional flags argument. The set of supported flags depends on the
177 running kernel; full support currently requires kernel 4.7 or later.
179 * posix_spawnattr_setflags now supports the flag POSIX_SPAWN_SETSID, to
180 create a new session ID for the spawned process. This feature is
181 scheduled to be added to the next major revision of POSIX; for the time
182 being, it is available under _GNU_SOURCE.
184 * errno.h is now safe to use from C-preprocessed assembly language on all
185 supported operating systems. In this context, it will only define the
186 Exxxx constants, as preprocessor macros expanding to integer literals.
188 * On ia64, powerpc64le, x86-32, and x86-64, the math library now implements
189 128-bit floating point as defined by ISO/IEC/IEEE 60559:2011 (IEEE
190 754-2008) and ISO/IEC TS 18661-3:2015. Contributed by Paul E. Murphy,
191 Gabriel F. T. Gomes, Tulio Magno Quites Machado Filho, and Joseph Myers.
193 To compile programs that use this feature, the compiler must support
194 128-bit floating point with the type name _Float128 (as defined by TS
195 18661-3) or __float128 (the nonstandard name used by GCC for C++, and for
196 C prior to version 7). _GNU_SOURCE or __STDC_WANT_IEC_60559_TYPES_EXT__
197 must be defined to make the new interfaces visible.
199 The new functions and macros correspond to those present for other
200 floating-point types (except for a few obsolescent interfaces not
201 supported for the new type), with F128 or f128 suffixes; for example,
202 strtof128, HUGE_VAL_F128 and cosf128. Following TS 18661-3, there are no
203 printf or scanf formats for the new type; the strfromf128 and strtof128
204 interfaces should be used instead.
206 Deprecated and removed features, and other changes affecting compatibility:
208 * The synchronization that pthread_spin_unlock performs has been changed to
209 now be equivalent to a C11 atomic store with release memory order to the
210 spin lock's memory location. Previously, several (but not all)
211 architectures used stronger synchronization (e.g., containing what is
212 often called a full barrier). This change can improve performance, but
213 may affect odd fringe uses of spin locks that depend on the previous
214 behavior (e.g., using spin locks as atomic variables to try to implement
215 Dekker's mutual exclusion algorithm).
217 * The port to Native Client running on ARMv7-A (--host=arm-nacl) has been
220 * Sun RPC is deprecated. The rpcgen program, librpcsvc, and Sun RPC headers
221 will only be built and installed when the GNU C Library is configured with
222 --enable-obsolete-rpc. This allows alternative RPC implementations, such
223 as TIRPC or rpcsvc-proto, to be used.
225 * The NIS(+) name service modules, libnss_nis, libnss_nisplus, and
226 libnss_compat, are deprecated, and will not be built or installed by
229 The NIS(+) support library, libnsl, is also deprecated. By default, a
230 compatibility shared library will be built and installed, but not headers
231 or development libraries. Only a few NIS-related programs require this
232 library. (In particular, the GNU C Library has never required programs
233 that use 'gethostbyname' to be linked with libnsl.)
235 Replacement implementations based on TIRPC, which additionally support
236 IPv6, are available from <https://github.com/thkukuk/>. The configure
237 option --enable-obsolete-nsl will cause libnsl's headers, and the NIS(+)
238 name service modules, to be built and installed.
240 * The DNS stub resolver no longer performs EDNS fallback. If EDNS or DNSSEC
241 support is enabled, the configured recursive resolver must support EDNS.
242 (Responding to EDNS-enabled queries with responses which are not
243 EDNS-enabled is fine, but FORMERR responses are not.)
245 * res_mkquery and res_nmkquery no longer support the IQUERY opcode. DNS
246 servers have not supported this opcode for a long time.
248 * The _res_opcodes variable has been removed from libresolv. It had been
249 exported by accident.
251 * <string.h> no longer includes inline versions of any string functions,
252 as this kind of optimization is better done by the compiler. The macros
253 __USE_STRING_INLINES and __NO_STRING_INLINES no longer have any effect.
255 * The nonstandard header <xlocale.h> has been removed. Most programs should
256 use <locale.h> instead. If you have a specific need for the definition of
257 locale_t with no other declarations, please contact
258 libc-alpha@sourceware.org and explain.
260 * The obsolete header <sys/ultrasound.h> has been removed.
262 * The obsolete signal constant SIGUNUSED is no longer defined by <signal.h>.
264 * The obsolete function cfree has been removed. Applications should use
267 * The stack_t type no longer has the name struct sigaltstack. This changes
268 the C++ name mangling for interfaces involving this type.
270 * The ucontext_t type no longer has the name struct ucontext. This changes
271 the C++ name mangling for interfaces involving this type.
273 * On M68k GNU/Linux and MIPS GNU/Linux, the fpregset_t type no longer has
274 the name struct fpregset. On Nios II GNU/Linux, the mcontext_t type no
275 longer has the name struct mcontext. On SPARC GNU/Linux, the struct
276 mc_fq, struct rwindow, struct fpq and struct fq types are no longer
277 defined in sys/ucontext.h, the mc_fpu_t type no longer has the name struct
278 mc_fpu, the gwindows_t type no longer has the name struct gwindows and the
279 fpregset_t type no longer has the name struct fpu. This changes the C++
280 name mangling for interfaces involving those types.
282 * On S/390 GNU/Linux, the constants defined by <sys/ptrace.h> have been
283 synced with the kernel:
285 - PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS
286 are not supported on this architecture and have been removed.
288 - PTRACE_SINGLEBLOCK, PTRACE_SECCOMP_GET_FILTER, PTRACE_PEEKUSR_AREA,
289 PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE,
290 PTRACE_DISABLE_TE and PTRACE_TE_ABORT_RAND have been added.
292 Programs that assume the GET/SETREGS ptrace requests are universally
293 available will now fail to build, instead of malfunctioning at runtime.
295 Changes to build and runtime requirements:
297 * Linux kernel 3.2 or later is required at runtime, on all architectures
298 supported by that kernel. (This is a change from version 2.25 only for
301 * GNU Binutils 2.25 or later is now required to build the GNU C Library.
303 * On most architectures, GCC 4.9 or later is required to build the GNU C
304 Library. On powerpc64le, GCC 6.2 or later is required.
306 Older GCC versions and non-GNU compilers are still supported when
307 compiling programs that use the GNU C Library. (We do not know exactly
308 how old, and some GNU extensions to C may be _de facto_ required. If you
309 are interested in helping us make this statement less vague, please
310 contact libc-alpha@sourceware.org.)
312 Security related changes:
314 * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
315 to avoid fragmentation-based spoofing attacks (CVE-2017-12132).
317 * LD_LIBRARY_PATH is now ignored in binaries running in privileged AT_SECURE
318 mode to guard against local privilege escalation attacks (CVE-2017-1000366).
320 * Avoid printing a backtrace from the __stack_chk_fail function since it is
321 called on a corrupt stack and a backtrace is unreliable on a corrupt stack
324 * A use-after-free vulnerability in clntudp_call in the Sun RPC system has been
325 fixed (CVE-2017-12133).
327 The following bugs are resolved with this release:
329 [984] network: Respond to changed resolv.conf in gethostbyname
330 [5010] network: sunrpc service cleanup causes unwanted port mapper traffic
331 [12068] localedata: sc_IT: misspelled yesexpr/day/abday/mon/abmon/date_fmt
333 [12189] libc: __stack_chk_fail should not attempt a backtrace
335 [14096] time: Race condition on timezone/tst-timezone.out
336 [14172] localedata: az_IR: new locale
337 [14995] build: glibc fails to build if gold is the default linker, even if
339 [15998] build: [powerpc] Set arch_minimum_kernel for powerpc LE
340 [16637] network: inet_pton function is accepting IPv6 with bad format
341 [16640] string: string/strtok.c: undefined behaviour inconsistent between
342 x86 and other generic code
343 [16875] localedata: ko_KR: fix lang_name
344 [17225] localedata: ar_SY: localized month names for May and June are
346 [17297] localedata: da_DK: wrong date_fmt string
347 [18907] stdio: Incorrect order of __wur __THROW in <printf.h>
348 [18934] localedata: hu_HU: collate: fix multiple bugs and add tests
349 [18988] nptl: pthread wastes memory with mlockall(MCL_FUTURE)
350 [19066] localedata: ar_SA abbreviated day and month names are in English
351 [19569] network: resolv: Support an arbitrary number of search domains
352 [19570] network: Implement random DNS server selection in the stub
354 [19838] locale: localedef fails on PA-RISC
355 [19919] localedata: iso14651_t1_common: Correct the Malayalam sorting
356 order of 0D36 and 0D37
357 [19922] localedata: iso14651_t1_common: Define collation for Malayalam
359 [20098] libc: FAIL: debug/backtrace-tst on hppa
360 [20257] network: sunrpc: clntudp_call does not enforce timeout when
362 [20275] localedata: locale day/abday/mon/abmon should not have trailing
364 [20313] localedata: Update locale data to Unicode 9.0
365 [20424] manual: Document how to provide a malloc replacement
366 [20496] localedata: agr_PE: new language locale Awajún / Aguaruna (agr)
368 [20686] locale: Add el_GR@euro to SUPPORTED.
369 [20831] dynamic-link: _dl_map_segments does not test for __mprotect
370 failures consistently
371 [21015] dynamic-link: Document and fix --enable-bind-now
372 [21016] nptl: pthread_cond support is broken on hppa
373 [21029] libc: glibc-2.23 (and later) fails to compile with -fno-omit-
374 frame-pointer on i386
375 [21049] libc: segfault in longjmp_chk() due to clobbered processor
377 [21075] libc: unused assigment to %g4 in sparc/sparc{64,32}/clone.S
378 [21088] libc: Build fails with --enable-static-nss
379 [21094] math: cosf(1.57079697) has 3 ulp error on targets where the
380 generic c code is used
381 [21109] libc: Tunables broken on big-endian
382 [21112] math: powf has large ulp errors with base close to 1 and exponent
384 [21115] network: sunrpc: Use-after-free in error path in clntudp_call
386 [21120] malloc: glibc malloc is incompatible with GCC 7
387 [21130] math: Incorrect return from y0l (-inf) and y1l (-inf) when linking
389 [21134] math: Exception (divide by zero) not set for y0/y1 (0.0) and y0/y1
390 (-0.0) when linking with -lieee
391 [21171] math: log10, log2 and lgamma return incorrect results
392 [21179] libc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs
393 [21182] libc: __memchr_sse2: regression in glibc-2.25 on i686
394 [21207] localedata: ce_RU: update weekdays from CLDR
395 [21209] dynamic-link: LD_HWCAP_MASK read in setuid binaries
396 [21217] localedata: Update months from CLDR-31
397 [21232] libc: miss posix_fadvise64 on MIPS64 when static linking
398 [21243] libc: support_delete_temp_file should issue warning for failed
400 [21244] libc: support resolv_test_start() socket fd close should be
402 [21253] libc: localedef randomly segfaults when using -fstack-check due to
403 new posix_spawn implementation
404 [21258] dynamic-link: Branch predication in _dl_runtime_resolve_avx512_opt
405 leads to lower CPU frequency
406 [21259] libc: [alpha] termios.h missing IXANY for POSIX
407 [21261] libc: [sparc64] bits/setjmp.h namespace
408 [21267] network: [mips] bits/socket.h IOC* namespace
409 [21268] libc: [alpha] termios.h NL2, NL3 namespace
410 [21270] libc: mmap64 silently truncates large offset values
411 [21275] libc: posix_spawn always crashes on ia64 now
412 [21277] libc: [alpha] termios.h missing IUCLC for UNIX98 and older
413 [21280] math: [powerpc] logbl for POWER7 return incorrect results
414 [21289] libc: Incorrect declaration for 32-bit platforms with
415 _FILE_OFFSET_BITS=64 causes build error
416 [21295] network: GETAI(AF_UNSPEC) drops IPv6 addresses if nss module does
417 not support gethostbyname4_r
418 [21298] nptl: rwlock can deadlock on frequent reader/writer phase
420 [21338] malloc: mallopt M_ARENA_MAX doesn't set the maximum number of
422 [21340] libc: Support POSIX_SPAWN_SETSID
423 [21357] libc: unwind-dw2-fde deadlock when using AddressSanitizer
424 [21359] network: ns_name_pack needs additional byte in destination buffer
425 [21361] network: resolv: Reduce advertised EDNS0 buffer size to guard
426 against fragmentation attacks (CVE-2017-12132)
427 [21369] network: resolv: Remove EDNS fallback
428 [21371] libc: Missing timespec definition when compiled with _XOPEN_SOURCE
430 [21386] nptl: Assertion in fork for distinct parent PID is incorrect
431 [21391] dynamic-link: x86: Set dl_platform and dl_hwcap from CPU features
432 [21393] stdio: Missing dup3 error check in freopen, freopen64
433 [21396] libc: Use AVX2 memcpy/memset on Skylake server
434 [21399] localedata: Bad description for U00EC in
435 localedata/charmaps/CP1254
436 [21411] malloc: realloc documentation error
437 [21426] network: sys/socket.h uio.h namespace
438 [21428] libc: [aarch64] tst-backtrace5 testsuite failure
439 [21445] libc: signal.h bsd_signal namespace
440 [21455] network: Network headers stdint.h namespace
441 [21474] network: resolv: res_init does not use RES_DFLRETRY (2) but 4 for
443 [21475] network: resolv: Overlong search path is truncated mid-label
444 [21511] libc: sigstack namespace
445 [21512] libc: clone() ends up calling exit_group() through _exit() wrapper
446 [21514] libc: sysdeps/unix/sysv/linux/sys/syscall.h:31:27: fatal error:
447 bits/syscall.h: No such file or directory
448 [21517] libc: struct sigaltstack namespace
449 [21528] dynamic-link: Duplicated minimal strtoul implementations in ld.so
450 [21533] localedata: Update locale data to Unicode 10.0
452 ../sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:44: Error:
453 junk at end of line, first unrecognized character is `@'
454 [21538] libc: SIG_HOLD missing for XPG4
455 [21539] libc: S390: Mismatch between kernel and glibc ptrace.h with
456 request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.
457 [21542] libc: Use conservative default for sysconf (_SC_NPROCESSORS_ONLN)
458 [21543] libc: sigevent namespace
459 [21548] libc: [mips] get/set/make/swap context for MIPS O32 assume wrong
460 size for general purpose registers in mcontext_t structure
461 [21550] libc: sigwait namespace
462 [21552] libc: XPG4 bsd_signal namespace
463 [21554] libc: sigpause namespace
464 [21560] libc: sys/wait.h signal.h namespace
465 [21561] libc: waitid namespace
466 [21573] nptl: GCC 7: /usr/bin/install: cannot remove
467 '/usr/include/stdlib.h': Permission denied
468 [21575] libc: sys/wait.h missing struct rusage definition
469 [21584] libc: sigaltstack etc namespace
470 [21597] libc: siginterrupt namespace
471 [21607] math: hppa: FAIL: math/test-tgmath
472 [21609] dynamic-link: Incomplete workaround for GCC __tls_get_addr ABI
474 [21622] libc: [tile] missing SA_* for POSIX.1:2008
475 [21624] dynamic-link: ld.so: Unsafe alloca allows local attackers to alias
476 stack and heap (CVE-2017-1000366)
477 [21625] libc: wait3 namespace
478 [21654] nss: Incorrect pointer alignment in NSS group merge result
480 [21657] network: Parse interface zone id for node-local multicast
481 [21662] string: memcmp-avx2-movbe.S lacks saturating subtraction for
483 [21666] libc: .symver is used on common symbol
484 [21668] network: resolv: res_init cross-thread broadcast introduces race
486 [21687] math: tgmath.h totalorder, totalordermag return type
487 [21694] locale: Current Glibc Locale Does Not Support Tok-Pisin and Fiji
489 [21696] libc: Incorrect assumption of of __cpu_mask in
490 posix/sched_cpucount.c
491 [21697] libc: sysdeps/posix/spawni.c: 2 * suspicious condition ?
492 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
494 [21707] math: ppc64le: Invalid IFUNC resolver from libgcc calls getauxval,
495 leading to relocation crash
496 [21709] libc: resolv_conf.c:552: update_from_conf: Assertion
497 `resolv_conf_matches (resp, conf)' failed.
498 [21710] localedata: Added Samoan language locale for Samoa
499 [21711] localedata: Pashto yesstr/nostr locale are missing
500 [21715] nptl: sysdeps/nptl/bits/pthreadtypes.h: typedef guard
501 __have_pthread_attr_t can cause redefinition of typedef ‘pthread_attr_t’
502 [21721] localedata: Incorrect Full Weekday names for ks_IN@devanagari
503 [21723] localedata: yesstr/nostr missing for Chinese language locale
504 [21724] localedata: yesstr and nostr are missing for Xhosa [LC_MESSAGES]
506 [21727] localedata: yesstr and nostr are missing for Tsonga [LC_MESSAGES]
508 [21728] localedata: New Locale for Tongan language
509 [21729] localedata: incorrect LC_NAME fields for hi_IN
510 [21733] localedata: yesstr and nostr are missing for zh_HK
511 [21734] localedata: Missing yesstr and nostr are for kw_GB
512 [21738] libc: misc/tst-preadvwritev2 and misc/tst-preadvwritev64v2 fail
513 [21741] libc: Undefined __memmove_chk_XXX and __memset_chk_XXX in libc.a
514 [21742] libc: _dl_num_cache_relocations is undefined in libc.a
515 [21743] localedata: ks_IN@devanagari: abday strings mismatch the day
517 [21744] libc: Tests failing on --enable-tunables --enable-stack-
519 [21749] localedata: Wrong abbreviated day name (“abday”) for
521 [21756] localedata: missing yesstr, nostr for nds_DE and nds_NL
522 [21757] localedata: missing yesstr, nostr for pap_AW and pap_CW
523 [21759] localedata: missing yesstr and nostr for Tigrinya
524 [21760] localedata: Fix LC_MESSAGES and LC_ADDRESS for anp_IN
525 [21766] localedata: Wrong LC_MESSAGES for om_ET Locale
526 [21767] localedata: Missing Bislama locales
527 [21768] localedata: Missing yesstr and nostr for aa_ET
528 [21770] localedata: Missing Field in li_NL
529 [21778] nptl: Robust mutex may deadlock
530 [21779] libc: MicroBlaze segfaults when loading libpthread
531 [21783] localedata: Fix int_select international_call_prefixes
532 [21784] localedata: Inconsistency in country_isbn
533 [21788] localedata: Missing Country Postal Abbreviations
534 [21794] localedata: Added-country_isbn-for-Italy
535 [21795] localedata: Add/Fix country_isbn for France
536 [21796] localedata: Added country_isbn for Republic of Korea
537 [21797] localedata: Fix inconsistency in country_isbn and missing prefixes
538 [21799] localedata: Added int_select international_call_prefixes
539 [21801] localedata: Added int_select international_call_prefixes
540 [21804] nptl: Double semicolon in thread-shared-types.h
541 [21807] localedata: LC_ADDRESS fix for pap_CW
542 [21808] localedata: Fix LC_ADDRESS for pap_AW
543 [21821] localedata: Added country_name in mai_IN
544 [21822] localedata: Fix LC_TIME for mai_IN
545 [21823] localedata: missing yesstr, nostr for sa_IN
546 [21825] localedata: Fix name_mrs for mag_IN
547 [21828] localedata: 2.26 changelog should mention user visible changes
549 [21835] localedata: Added Maithili language locale for Nepal
550 [21838] localedata: Removed redundant data for the_NP
551 [21839] localedata: Fix LC_MONETARY for ta_LK
552 [21844] localedata: Fix Latin characters and Months Sequence.
553 [21848] localedata: Fix mai_NP Title Name
558 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
559 24731-2:2010, is supported to enable declarations of functions from that
560 TR. Note that not all functions from that TR are supported by the GNU C
563 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
564 18661-1:2014, is supported to enable declarations of functions and macros
565 from that TS. Note that not all features from that TS are supported by
568 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
569 18661-4:2015, is supported to enable declarations of functions and macros
570 from that TS. Note that most features from that TS are not supported by
573 * The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
574 now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
575 Since the GNU C Library defaults to a much newer revision of POSIX, this
576 will only affect programs that specifically request an old conformance
577 mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
578 see a change in the visible declarations, but a program compiled with
579 just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
582 Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
583 defined by all multithreaded code, but glibc has not required this for
586 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
587 means that in a future release, the macros “major”, “minor”, and “makedev”
588 will only be available from <sys/sysmacros.h>.
590 These macros are not part of POSIX nor XSI, and their names frequently
591 collide with user code; see for instance glibc bug 19239 and Red Hat bug
592 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
593 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
596 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
597 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
598 femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
600 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
601 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
602 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
603 <stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
604 INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
605 UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
606 INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
607 UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
608 UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
609 UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
610 UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
613 * New <math.h> features are added from TS 18661-1:2014:
615 - Signaling NaN macros: SNANF, SNAN, SNANL.
617 - Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
618 fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
619 fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
621 - llogb functions: the llogb, llogbf and llogbl functions, and the
622 FP_LLOGB0 and FP_LLOGBNAN macros.
624 - Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
627 - Comparison macros: iseqsig.
629 - Classification macros: iscanonical, issubnormal, iszero.
631 - Total order functions: totalorder, totalorderf, totalorderl,
632 totalordermag, totalordermagf, totalordermagl.
634 - Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
636 - NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
637 setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
639 * The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
640 are added to libc. They convert a floating-point number into string.
642 * Most of glibc can now be built with the stack smashing protector enabled.
643 It is recommended to build glibc with --enable-stack-protector=strong.
644 Implemented by Nick Alcock (Oracle).
646 * The function explicit_bzero, from OpenBSD, has been added to libc. It is
647 intended to be used instead of memset() to erase sensitive data after use;
648 the compiler will not optimize out calls to explicit_bzero even if they
649 are "unnecessary" (in the sense that no _correct_ program can observe the
650 effects of the memory clear).
652 * On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
653 to float instead of double. This does not affect the ABI of any libraries
654 that are part of the GNU C Library, but may affect the ABI of other
655 libraries that use this type in their interfaces.
657 * On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
658 float_t and double_t types are now defined to long double instead of float
659 and double. These options are not the default, and this does not affect
660 the ABI of any libraries that are part of the GNU C Library, but it may
661 affect the ABI of other libraries that use this type in their interfaces,
662 if they are compiled or used with those options.
664 * The getentropy and getrandom functions, and the <sys/random.h> header file
667 * The buffer size for byte-oriented stdio streams is now limited to 8192
668 bytes by default. Previously, on Linux, the default buffer size on most
669 file systems was 4096 bytes (and thus remains unchanged), except on
670 network file systems, where the buffer size was unpredictable and could be
671 as large as several megabytes.
673 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
674 for the Linux quota interface which predates kernel version 2.4.22 has
677 * The malloc_get_state and malloc_set_state functions have been removed.
678 Already-existing binaries that dynamically link to these functions will
679 get a hidden implementation in which malloc_get_state is a stub. As far
680 as we know, these functions are used only by GNU Emacs and this change
681 will not adversely affect already-built Emacs executables. Any undumped
682 Emacs executables, which normally exist only during an Emacs build, should
683 be rebuilt by re-running “./configure; make” in the Emacs build tree.
685 * The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
686 corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
687 “no-ip6-dotint” had already been the default, and support for the
688 “ip6-dotint” option was removed from the Internet in 2006.
690 * The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
691 flag from <resolv.h> have been removed. The option relied on a
692 backwards-incompatible DNS extension which was never deployed on the
695 * The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
696 RES_BLAST defined in the <resolv.h> header file have been deprecated.
697 They were already unimplemented.
699 * The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
700 _res.flags are deprecated. The flag was standardized in RFC 2133, but
701 removed again from the IETF name lookup interface specification in RFC
702 2553. Applications should use getaddrinfo instead.
704 * DNSSEC-related declarations and definitions have been removed from the
705 <arpa/nameser.h> header file, and libresolv will no longer attempt to
706 decode the data part of DNSSEC record types. Previous versions of glibc
707 only implemented minimal support for the previous version of DNSSEC, which
708 is incompatible with the currently deployed version.
710 * The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
711 ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
712 <arpa/nameser.h> header file because the distinction between RR types and
713 meta-RR types is not officially standardized, subject to revision, and
714 thus not suitable for encoding in a macro.
716 * The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
717 and rhook members of the res_state type in <resolv.h> have been removed.
718 The glibc stub resolver did not support these hooks, but the header file
719 did not reflect that.
721 * For multi-arch support it is recommended to use a GCC which has
722 been built with support for GNU indirect functions. This ensures
723 that correct debugging information is generated for functions
724 selected by IFUNC resolvers. This support can either be enabled by
725 configuring GCC with '--enable-gnu-indirect-function', or by
726 enabling it by default by setting 'default_gnu_indirect_function'
727 variable for a particular architecture in the GCC source file
730 * GDB pretty printers have been added for mutex and condition variable
731 structures in POSIX Threads. When installed and loaded in gdb these pretty
732 printers show various pthread variables in human-readable form when read
733 using the 'print' or 'display' commands in gdb.
735 * Tunables feature added to allow tweaking of the runtime for an application
736 program. This feature can be enabled with the '--enable-tunables' configure
737 flag. The GNU C Library manual has details on usage and README.tunables has
738 instructions on adding new tunables to the library.
740 * A new version of condition variables functions have been implemented in
741 the NPTL implementation of POSIX Threads to provide stronger ordering
744 * A new version of pthread_rwlock functions have been implemented to use a more
745 scalable algorithm primarily through not using a critical section anymore to
748 Security related changes:
750 * On ARM EABI (32-bit), generating a backtrace for execution contexts which
751 have been created with makecontext could fail to terminate due to a
752 missing .cantunwind annotation. This has been observed to lead to a hang
753 (denial of service) in some Go applications compiled with gccgo. Reported
754 by Andreas Schwab. (CVE-2016-6323)
756 * The DNS stub resolver functions would crash due to a NULL pointer
757 dereference when processing a query with a valid DNS question type which
758 was used internally in the implementation. The stub resolver now uses a
759 question type which is outside the range of valid question type values.
762 The following bugs are resolved with this release:
764 [4099] stdio: Overly agressive caching by stream i/o functions.
765 [7065] build: Support building glibc with -fstack-protector or -fstack-
767 [9842] localedata: en_CA: incorrect date format
768 [13165] nptl: pthread_cond_wait() can consume a signal that was sent
769 before it started waiting
770 [14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
771 [15765] nptl: sem_open is wrongly a cancellation point
772 [16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
773 [16458] libc: endian.h and netinet/in.h byte order macros return values of
775 [16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
776 library linked with pthread
777 [16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
779 [16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
780 [17252] libc: getrandom and getentropy syscall
781 [17730] malloc: thread-local storage is sometimes improperly free()'d
782 after being __libc_memalign()'d
783 [18241] stdio: failed fseek on memstream does not set errno and can fail
785 [18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
787 [18463] nptl: pthread_cond_broadcast issue when surrounded by
788 PTHREAD_PRIO_INHERIT mutex on ARM
789 [18784] network: res_query and related function crash for special record
790 type queries (CVE-2015-5180)
791 [19380] math: strtod does not raise "inexact"
792 [19387] string: Integer overflow in memchr
793 [19390] string: Integer overflow in strncat
794 [19398] build: linknamespace tests fail with massively parallel build
795 [19402] nptl: Deadlock with robust shared mutex and asynchronous
797 [19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
798 [19473] malloc: Turn malloc_get_state etc. in compatibility symbols
799 [19514] libc: [PATCH] Fix spelling errors in spelling
800 "implement"/"implementation" in several places
801 [19582] network: Deprecate RES_USE_INET6
802 [19673] manual: clog10 docs appear to be erroneous
803 [19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
804 causes a segmentation fault
805 [19826] libc: invalid pointer returned from __tls_get_addr with static
807 [20016] network: resolv: Remove hooks support from the API
808 [20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
810 [20033] math: [x86_64] vectorized math function don't call the __finite
812 [20116] nptl: use after free in pthread_create
813 [20181] stdio: open_memstream(): writes not at end of stream corrupt data
814 [20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
816 [20311] nptl: please install proc_service.h
817 [20366] libc: Compilation errors in installed headers in strict-compliance
819 [20370] malloc: malloc: Arena free list management is still racy
820 (incorrect fix in bug 19243)
821 [20386] libc: assert (X = 0) does not result in GCC warning
822 [20432] malloc: malloc: Minimize interface required for interposition
823 [20435] libc: Missing unwind info in __startcontext causes infinite loop
824 in _Unwind_Backtrace (CVE-2016-6323)
825 [20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
826 [20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
828 [20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
829 [20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
830 [20477] network: resolv: incorrect double-checked locking related to
832 [20478] libc: libc_ifunc macro and similar usages leads to false debug-
834 [20495] math: x86_64 performance degradation due to AVX/SSE transition
836 [20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
837 [20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
838 cause transition penalty
839 [20517] math: sparcv9 missing fdiml compat symbol
840 [20524] manual: strverscmp is inconsistent
841 [20525] libc: <sys/quota.h> should be based on kernel headers
842 [20539] math: GCC 7 -static -lm fails to link at -O3
843 [20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
845 [20558] string: POSIX bcopy/bzero decls do not implement Object Size
847 [20591] network: Remove obsolete DNSSEC support
848 [20592] network: DNS resource record type classification macros in
849 <arpa/nameser.h> are incorrect
850 [20593] network: Update DNS RR type definitions
851 [20611] network: getaddrinfo accepts invalid numeric scope IDs
852 [20615] build: glibc build fails when using --with-cpu=power9 --enable-
854 [20629] network: libresolv: Remove support for bitstring labels
856 [20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
857 assertion: "maxidx >= 2"
858 [20660] math: [arm] Use VSQRT
859 [20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
860 -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
861 [20689] libc: Test for FMA should also check for AVX.
862 [20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
863 [20715] math: iszero macro breaks existing code
864 [20718] math: [powerpc] copysignl raises "invalid" for sNaN
865 [20728] libc: powerpc: Missing TOC stub in clone
866 [20729] build: glibc-2.24 fails to build for i486 with -Os
867 [20750] build: Build fails with default PIE enabled gcc-6.x
868 [20768] math: [alpha] sqrt fegetenv namespace
869 [20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
871 [20787] math: float_t is defined as float incorrectly on x86_64 even if
872 __FLT_EVAL_METHOD__ is 2
873 [20790] network: rpcgen buffer overrun in get_prog_declaration
874 [20822] nptl: race condition in __lll_unlock_elision on powerpc
875 [20829] libc: crypt snprintf namespace
876 [20847] libc: tst-vfork3 failure
877 [20855] math: Default bits/mathdef.h has inappropriate float_t
878 [20859] math: [sh4] FP_ILOGB0 invalid
879 [20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
880 U+20AC), not same as GBK
881 [20915] dynamic-link: global-dynamic TLS broken on aarch64
882 [20916] math: pow handling of sNaN arguments
883 [20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
884 [20919] math: Bad pow (qNaN, 0) result with -lieee
885 [20940] math: hypot sNaN handling
886 [20947] math: fmax, fmin sNaN handling
887 [20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
888 [20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
890 [20971] string: powerpc64/power7 memchr overflows internal pointer check
891 [20973] nptl: robust mutexes: Lost wake-ups
892 [20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
893 [20978] nis: strlen on null pointer in nss_nisplus
894 [20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
896 [21014] string: i686 memchr overflows internal pointer check
897 [21019] libc: [mips] n32 lseek incorrect on overflow
898 [21022] libc: [microblaze] __backtrace get_frame_size namespace
899 [21026] libc: [MIPS] readahead syscall is broken on n64
900 [21028] math: Fallback fesetexceptflag should always succeed
901 [21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
902 [21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
904 [21053] libc: [SH] Namespace pollution from sys/ucontext.h
905 [21061] librt: [microblaze] librt lost clock_* exports
906 [21073] libc: tunables: insecure environment variables passed to
907 subprocesses with AT_SECURE
908 [21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
912 * The minimum Linux kernel version that this version of the GNU C Library
913 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
914 kernel version 2.6.32 or later suffices (on architectures that already
915 required kernel versions more recent than 3.2, those requirements remain
916 unchanged). Linux 3.2 or later kernel headers are required on all
919 * The pap_AN locale has been deleted. This has been deprecated for a long
920 time. It has been replaced by pap_AW & pap_CW, both of which have long
921 been included in previous releases.
923 * The readdir_r and readdir64_r functions have been deprecated. It is
924 recommended to use readdir and readdir64 instead.
926 * The type “union wait” has been removed. It was deprecated in the early
927 1990s and never part of POSIX. Application code should use the int type
928 instead of “union wait”.
930 * A new NSS action is added to facilitate large distributed system
931 administration. The action, MERGE, allows remote user stores like LDAP
932 to be merged into local user stores like /etc/groups in order to provide
933 easy to use, updated, and managed sets of merged credentials. The new
934 action can be used by configuring it in /etc/nsswitch.conf:
935 group: files [SUCCESS=merge] nis
936 Implemented by Stephen Gallagher (Red Hat).
938 * The deprecated __malloc_initialize_hook variable has been removed from the
941 * The long unused localedef --old-style option has been removed. It hasn't
942 done anything in over 16 years. Scripts using this option can safely
945 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
946 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
947 return the next representable value in the direction of positive infinity
948 and the nextdown functions return the next representable value in the
949 direction of negative infinity. These are currently enabled as GNU
952 Security related changes:
954 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
955 could result in a stack overflow when getnetbyname was called with an
956 overly long name. (CVE-2016-3075)
958 * Previously, getaddrinfo copied large amounts of address data to the stack,
959 even after the fix for CVE-2013-4458 has been applied, potentially
960 resulting in a stack overflow. getaddrinfo now uses a heap allocation
961 instead. Reported by Michael Petlan. (CVE-2016-3706)
963 * The glob function suffered from a stack-based buffer overflow when it was
964 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
965 Reported by Alexander Cherepanov. (CVE-2016-1234)
967 * The Sun RPC UDP client could exhaust all available stack space when
968 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
969 alloca plugin for GCC. (CVE-2016-4429)
971 * The IPv6 name server management code in libresolv could result in a memory
972 leak for each thread which is created, performs a failing naming lookup,
973 and exits. Over time, this could result in a denial of service due to
974 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
976 The following bugs are resolved with this release:
978 [1170] localedata: ne_NP: update Nepali locale definition file
979 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
981 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
982 [6796] math: fdim() does not set errno on overflow
983 [10354] libc: posix_spawn should use vfork() in more cases than presently
984 [11213] localedata: localedata: add copyright disclaimer to locale files
985 [12143] localedata: chr_US: new Cherokee locale
986 [12450] localedata: sgs_LT: new locale
987 [12676] localedata: ln_CD: new locale
988 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
990 [13304] math: fma, fmaf, fmal produce wrong results
991 [14259] build: --localedir arg to configure is ignored
992 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
993 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
994 [14934] localedata: es_CL: wrong first weekday chilean locale
995 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
997 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
999 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
1000 [15368] nptl: raise() is not async-signal-safe
1001 [15479] math: ceil, floor, round and trunc raise inexact exception
1002 [15578] localedata: kk_KZ: various updates
1003 [16003] localedata: pap_AN: punt old locale
1004 [16137] localedata: iw_IL: punt old locale
1005 [16190] localedata: eo: new esperanto locale
1006 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
1007 [16742] malloc: race condition: pthread_atfork() called before first
1008 malloc() results in unexpected locking behaviour/deadlocks
1009 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
1011 [16983] localedata: postal_fmt does not allow %l and %n modifiers
1012 [17565] localedata: pt_PT: wrong (work-)week start
1013 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
1014 [17950] build: Build fails with -msse
1015 [18205] localedata: be_BY*: wrong first_weekday and first_workday
1016 [18433] libc: posix_spawn does not return correctly upon failure to
1018 [18453] localedata: charmaps/IBM875: incorrect codes
1019 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
1021 [18896] localedata: he_IL: improvements for currency
1022 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
1023 Romanian locale data
1024 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
1026 [19056] libc: Deprecate readdir_r
1027 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
1029 [19198] localedata: nl_NL: small improvements for Dutch locales
1030 [19257] network: Per-thread memory leak in __res_vinit with IPv6
1031 nameservers (CVE-2016-5417)
1032 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
1034 [19400] locale: Language missing in "iso-639.def", trivial fix in
1036 [19431] malloc: Deadlock between fflush, getdelim, and fork
1037 [19505] libc: Incorrect file descriptor validity checks in
1038 posix_spawn_file_actions_add{open,close,dup2}
1039 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
1040 when using RTLD_NEXT
1041 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
1042 `intl/{gettextP,loadinfo}.h'
1043 [19534] libc: execle, execlp may use malloc
1044 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
1045 [19573] network: res_nclose and __res_maybe_init disagree about name
1046 server initialization, breaking Hesiod
1047 [19575] localedata: Status of GB18030 tables
1048 [19581] localedata: sr_* date_fmt string contains additional newline
1049 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
1051 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
1052 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
1053 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
1054 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
1056 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
1058 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
1060 [19610] dynamic-link: ldconfig -X removes stale symbolic links
1061 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
1062 [19633] locale: strfmon_l applies global locale to number formatting
1063 [19642] network: Memory leak in getnameinfo
1064 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
1065 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
1067 [19654] math: [x86_64] Need testcase for BZ #19590 fix
1068 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
1070 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
1071 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
1073 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
1075 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
1077 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
1078 pointers and lengths in error-case.
1079 [19727] locale: Converting from/to UTF-xx with iconv() does not always
1080 report errors on UTF-16 surrogates values.
1081 [19755] nscd: nscd assertion failure in gc
1082 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
1083 [19759] libc: mempcpy shouldn't be inlined
1084 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
1085 [19765] libc: s390 needs an optimized mempcpy
1086 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
1087 NAME_MAX limit assumption (CVE-2016-1234)
1088 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
1089 [19787] network: Missing and incorrect truncation checks in getnameinfo
1090 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
1092 [19791] network: Assertion failure in res_query.c with un-connectable name
1094 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
1095 [19822] math: libm.so install clobbers old version
1096 [19825] network: resolv: send_vc can return uninitialized data in second
1097 response to getaddrinfo
1098 [19830] network: nss_dns: should check RDATA length against buffer length
1099 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
1100 confronted with A/AAAA records of invalid size
1101 [19837] nss: nss_db: No retries for some long lines with a larger buffer
1102 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
1103 [19853] stdio: Printing IBM long double in decimal with high precision is
1105 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
1106 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
1107 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
1109 [19865] network: Assertion failure or memory leak in
1110 _nss_dns_getcanonname_r
1111 [19868] network: nss_dns: netent code does not skip over non-PTR records
1112 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
1114 [19881] string: Improve x86-64 memset
1115 [19907] string: Incorrect memcpy tests
1116 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
1118 [19925] libc: termios.h XCASE namespace
1119 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
1120 [19929] libc: limits.h NL_NMAX namespace
1121 [19931] stdio: Memory leak in vfprintf
1122 [19957] libc: clone(CLONE_VM) access invalid parent memory
1123 [19963] localedata: en_IL: New locale
1124 [19989] stdio: stdio.h cuserid namespace
1125 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
1127 [19996] locale: langinfo.h nl_langinfo_l namespace
1128 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
1129 [20010] network: getaddrinfo: Stack overflow in hostent translation
1131 [20012] stdio: libio: fmemopen append mode failure
1132 [20014] stdio: stdio.h namespace for pre-threads POSIX
1133 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
1134 [20023] libc: fcntl.h timespec namespace
1135 [20024] math: [x86_64] vectorized sincos trashes the stack
1136 [20031] network: nss_hesiod: Heap overflow in get_txt_records
1137 [20041] time: sys/time.h timespec namespace
1138 [20043] libc: unistd.h missing cuserid for UNIX98 and before
1139 [20044] libc: unistd.h missing pthread_atfork for UNIX98
1140 [20051] libc: ttyslot in wrong header under wrong conditions
1141 [20054] libc: gethostname not declared for XPG4
1142 [20055] libc: termios.h missing tcgetsid for XPG4
1143 [20072] dynamic-link: x86 init_cpu_features is called twice in static
1145 [20073] libc: sys/stat.h fchmod namespace
1146 [20074] libc: stdlib.h rand_r namespace
1147 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
1148 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
1150 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
1151 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
1153 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
1154 [20119] libc: Wrong mask for processors level type from CPUID
1155 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
1156 AS not supporting AVX512
1157 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
1159 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
1160 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
1162 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
1163 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
1164 [20178] libc: posix_spawn{p} should not call exit
1165 [20191] stdio: libio: vtables hardening
1166 [20195] string: FMA4 detection requires CPUID execution with register
1168 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
1169 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
1171 [20212] math: acos (sNaN) returns sNaN
1172 [20213] math: asin (sNaN) returns sNaN
1173 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
1174 [20218] math: [i386] asinhl (sNaN) returns sNaN
1175 [20219] math: [i386] atanhl (sNaN) returns sNaN
1176 [20222] stdio: fopencookie: Mangle function pointers
1177 [20224] math: [i386] cbrtl (sNaN) returns sNaN
1178 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
1179 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
1181 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
1182 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
1183 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
1184 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
1185 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
1186 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
1187 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
1188 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
1189 [20240] math: modf (sNaN) returns sNaN
1190 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
1191 [20250] math: frexp (sNaN) returns sNaN
1192 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
1193 [20255] math: [i386] fdim, fdimf return with excess range and precision /
1195 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
1196 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
1197 subscript is below array bounds [-Werror=array-bounds]
1198 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
1199 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
1201 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
1202 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
1204 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
1205 "invalid" exceptions
1206 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
1207 [20316] localedata: id_ID: Februari instead of Pebruari
1208 [20327] string: POWER8 strcasecmp returns incorrect result
1209 [20347] math: Failure: Test: j0_downward (0xap+0)
1210 [20348] libc: FAIL: misc/tst-preadvwritev64
1211 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
1212 [20350] libc: There is no test for p{read,write}64
1213 [20357] math: Incorrect cos result for 1.5174239687223976
1214 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
1218 * Unicode 8.0.0 Support: Character encoding, character type info, and
1219 transliteration tables are all updated to Unicode 8.0.0, using new
1220 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
1221 These updates cause user visible changes, such as the fixes for bugs
1222 89, 16061, and 18568.
1224 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
1225 kernel-internal CPU set size. This means that requests that change the
1226 CPU affinity which failed before (for example, an all-ones CPU mask) will
1227 now succeed. Applications that need to determine the effective CPU
1228 affinities need to call sched_getaffinity or pthread_getaffinity_np after
1229 setting it because the kernel can adjust it (and the previous size check
1230 would not detect this in the majority of cases).
1232 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
1233 the following new symbols are used: fts64_children, fts64_close,
1234 fts64_open, fts64_read and fts64_set.
1236 * getaddrinfo now detects certain invalid responses on an internal netlink
1237 socket. If such responses are received, an affected process will
1238 terminate with an error message of "Unexpected error <number> on netlink
1239 descriptor <number>" or "Unexpected netlink response of size <number> on
1240 descriptor <number>". The most likely cause for these errors is a
1241 multi-threaded application which erroneously closes and reuses the netlink
1242 file descriptor while it is used by getaddrinfo.
1244 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
1245 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
1246 unnecessary serialization of memory allocation requests across threads.
1247 The defect is now corrected. Users should see a substantial increase in
1248 the concurent throughput of allocation requests for applications which
1249 trigger this bug. Affected applications typically create and
1250 destroy threads frequently. (Bug 19048 was reported and analyzed by
1253 * There is now a --disable-timezone-tools configure option for disabling the
1254 building and installing of the timezone related utilities (zic, zdump, and
1255 tzselect). This is useful for people who build the timezone data and code
1256 independent of the GNU C Library.
1258 * The obsolete header <regexp.h> has been removed. Programs that require
1259 this header must be updated to use <regex.h> instead.
1261 * The obsolete functions bdflush, create_module, get_kernel_syms,
1262 query_module and uselib are no longer available to newly linked binaries;
1263 the header <sys/kdaemon.h> has been removed. These functions and header
1264 were specific to systems using the Linux kernel and could not usefully be
1265 used with the GNU C Library on systems with version 2.6 or later of the
1268 * Optimized string, wcsmbs and memory functions for IBM z13.
1269 Implemented by Stefan Liebler.
1271 * Newly linked programs that define a variable called signgam will no longer
1272 have it set by the lgamma, lgammaf and lgammal functions. Programs that
1273 require signgam to be set by those functions must ensure that they use the
1274 variable provided by the GNU C Library and declared in <math.h>, without
1275 defining their own copy.
1277 * The minimum GCC version that can be used to build this version of the GNU
1278 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
1279 still be used to compile programs using the GNU C Library.
1281 Security related changes:
1283 * An out-of-bounds value in a broken-out struct tm argument to strftime no
1284 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
1286 * The LD_POINTER_GUARD environment variable can no longer be used to disable
1287 the pointer guard feature. It is always enabled. Previously,
1288 LD_POINTER_GUARD could be used to disable security hardening in binaries
1289 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
1292 * An integer overflow in hcreate and hcreate_r could lead to an
1293 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
1295 * The catopen function no longer has unbounded stack usage. Reported by
1296 Max. (CVE-2015-8779)
1298 * The nan, nanf and nanl functions no longer have unbounded stack usage
1299 depending on the length of the string passed as an argument to the
1300 functions. Reported by Joseph Myers. (CVE-2014-9761)
1302 * A stack-based buffer overflow was found in libresolv when invoked from
1303 libnss_dns, allowing specially crafted DNS responses to seize control
1304 of execution flow in the DNS client. The buffer overflow occurs in
1305 the functions send_dg (send datagram) and send_vc (send TCP) for the
1306 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
1307 family. The use of AF_UNSPEC triggers the low-level resolver code to
1308 send out two parallel queries for A and AAAA. A mismanagement of the
1309 buffers used for those queries could result in the response of a query
1310 writing beyond the alloca allocated buffer created by
1311 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
1312 the overflow. Thanks to the Google Security Team and Red Hat for
1313 reporting the security impact of this issue, and Robert Holiday of
1314 Ciena for reporting the related bug 18665. (CVE-2015-7547)
1316 The following bugs are resolved with this release:
1318 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
1319 [887] math: Math library function "logb" and "nextafter" inconsistent
1320 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
1321 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
1322 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
1323 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
1325 [4404] localedata: German translation of "Alarm clock" is misleading
1326 [6799] math: nextafter() and nexttoward() doen't set errno on
1327 overflow/underflow errors
1328 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
1330 [10432] nis: _nss_nis_setnetgrent assertion failure
1331 [11460] libc: fts has no LFS support
1332 [12926] network: getaddrinfo()/make_request() may spin forever
1333 [13065] nptl: Race condition in pthread barriers
1334 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
1335 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
1337 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
1338 [14912] libc: Rename non-installed bits/*.h headers
1339 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
1340 [15367] math: Let gcc use __builtin_isinf
1341 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
1342 [15421] math: lgamma wrongly sets signgam for ISO C
1343 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
1344 FE_INVALID with argument out of range
1345 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
1347 [15786] dynamic-link: ifunc resolver functions can smash function
1349 [15918] math: Unnecessary check for equality in hypotf()
1350 [16061] localedata: Review / update transliteration data
1351 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
1353 [16141] time: strptime %z offset restriction
1354 [16171] math: drem should be alias of remainder
1355 [16296] math: fegetround is pure?
1356 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
1357 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
1359 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
1360 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
1362 [16422] math: [powerpc] math-float, math-double failing llrint tests with
1363 "Exception "Inexact" set" on ppc32
1364 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
1365 [16517] math: Missing underflow exception from tanf/tan/tanl
1366 [16519] math: Missing underflow exception from sinhf
1367 [16520] math: Missing underflow exception from tanhf
1368 [16521] math: Missing underflow exception from exp2
1369 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
1371 [16734] stdio: fopen calls mmap to allocate its buffer
1372 [16961] math: nan function incorrect handling of bad sequences
1373 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
1374 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
1375 [16985] locale: localedef: confusing error message when opening output
1377 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
1378 [17197] locale: Redundant shift character in iconv conversion output at
1380 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
1381 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
1382 [17250] dynamic-link: static linking breaks nss loading
1383 (getaddrinfo/getpwnam/etc...)
1384 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
1386 [17441] math: isnan() should use __builtin_isnan() in GCC
1387 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
1388 (related to lock elision)
1389 [17787] manual: Exponent on page 324 of the PDF ends prematurely
1390 [17886] time: strptime should be able to parse "Z" as a timezone with %z
1391 [17887] time: strptime should be able to parse "+01:00" style timezones
1392 [17905] libc: catopen() Multiple unbounded stack allocations
1394 [18084] libc: backtrace (..., 0) dumps core on x86
1395 [18086] libc: nice() sets errno to 0 on success
1396 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
1397 is too large (CVE-2015-8778)
1398 [18251] dynamic-link: SONAME missing when audit modules provides path
1399 [18265] libc: add attributes for wchar string and memory functions
1400 [18370] math: csqrt missing underflows
1401 [18421] libc: [hppa] read-only segment has dynamic relocations
1402 [18472] libc: Obsolete syscall wrappers should be compat symbols
1403 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
1404 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
1405 [18525] localedata: Remove locale timezone information
1406 [18560] libc: [powerpc] spurious bits/ipc.h definitions
1407 [18568] localedata: Update locale data to Unicode 8.0
1408 [18589] locale: sort-test.sh fails at random
1409 [18595] math: ctan, ctanh missing underflows
1410 [18604] libc: assert macro-expands its argument
1411 [18610] math: S390: fetestexcept() reports any exception if DXC-code
1412 contains a vector instruction exception.
1413 [18611] math: j1, jn missing errno setting on underflow
1414 [18618] localedata: sync Chechen locale definitions with other *_RU
1416 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
1417 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
1418 [18665] network: In send_dg, the recvfrom function is NOT always using the
1419 buffer size of a newly created buffer (CVE-2015-7547)
1420 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
1422 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
1424 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
1425 [18699] math: tilegx cproj() for various complex infinities does not yield
1427 [18724] libc: Harden put*ent functions against data injection
1428 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
1429 [18755] build: build errors with -DNDEBUG
1430 [18757] stdio: fmemopen fails to set errno on failure
1431 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
1433 [18781] libc: openat64 lacks O_LARGEFILE
1434 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
1435 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
1436 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
1437 [18790] math: [ldbl-128ibm] tanhl inaccurate
1438 [18795] libc: stpncpy fortification misses buffer lengths that are
1439 statically too large
1440 [18796] build: build fails for --disable-mathvec
1441 [18803] math: hypot missing underflows
1442 [18820] stdio: fmemopen may leak memory on failure
1443 [18823] math: csqrt spurious underflows
1444 [18824] math: fma spurious underflows
1445 [18825] math: pow missing underflows
1446 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
1447 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
1448 [18870] build: sem_open.c fails to compile with missing symbol
1450 [18872] stdio: Fix memory leak in printf_positional
1451 [18873] libc: posix_fallocate overflow check ineffective
1452 [18875] math: Excess precision leads incorrect libm
1453 [18877] libc: arm: mmap offset regression
1454 [18887] libc: memory corruption when using getmntent on blank lines
1455 [18918] localedata: hu_HU: change time to HH:MM:SS format
1456 [18921] libc: Regression: extraneous stat() and fstat() performed by
1458 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
1459 binaries (CVE-2015-8777)
1460 [18951] math: tgamma missing underflows
1461 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
1463 [18953] localedata: lt_LT: change currency symbol to the euro
1464 [18956] math: powf inaccuracy
1465 [18961] math: [i386] exp missing underflows
1466 [18966] math: [i386] exp10 missing underflows
1467 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
1468 [18969] build: multiple string test failures due to missing locale
1470 [18970] libc: Reference of pthread_setcancelstate in libc.a
1471 [18977] math: float / long double Bessel functions not in XSI POSIX
1472 [18980] math: i386 libm functions return with excess range and precision
1473 [18981] math: i386 scalb*, ldexp return with excess range and precision
1474 [18982] stdio: va_list and vprintf
1475 [18985] time: Passing out of range data to strftime() causes a segfault
1477 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
1478 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
1479 [19012] locale: iconv_open leaks memory on error path
1480 [19016] math: clog, clog10 inaccuracy
1481 [19018] nptl: Mangle function pointers in tls_dtor_list
1482 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
1483 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
1484 [19048] malloc: malloc: arena free list can become cyclic, increasing
1486 [19049] math: [powerpc] erfc incorrect zero sign
1487 [19050] math: [powerpc] log* incorrect zero sign
1488 [19058] math: [x86_64] Link fail with -fopenmp and -flto
1489 [19059] math: nexttoward overflow incorrect in non-default rounding modes
1490 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
1491 [19074] network: Data race in _res_hconf_reorder_addrs
1492 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
1493 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
1494 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
1496 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
1498 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
1499 [19086] manual: posix_fallocate64 documented argument order is wrong.
1500 [19088] math: lround, llround missing exceptions close to overflow
1502 [19094] math: lrint, llrint missing exceptions close to overflow threshold
1503 [19095] math: dbl-64 lrint incorrect for 64-bit long
1504 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
1505 [19124] dynamic-link: ld.so failed to build with older assmebler
1506 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
1507 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
1508 [19134] math: [powerpc32] lround, lroundf spurious exceptions
1509 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
1510 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
1511 pthread_setaffinity_np
1512 [19156] math: [ldbl-128] j0l spurious underflows
1513 [19164] nptl: tst-getcpu fails with many possible CPUs
1514 [19168] math: math/test-ildoubl and math/test-ldouble failure
1515 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
1516 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
1518 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
1519 (FE_NOMASK_ENV) do not clear SSE exceptions
1520 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
1521 _int_new_arena/reused_arena
1522 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
1523 [19201] math: dbl-64 remainder incorrect sign of zero result
1524 [19205] math: bits/math-finite.h conditions do not match math.h and
1526 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
1527 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
1528 for C99-based standards
1529 [19212] libc: features.h not -Wundef clean
1530 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
1532 [19214] libc: Family and model identification for AMD CPU's are incorrect.
1533 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
1534 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
1536 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
1537 "inexact" exceptions
1538 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
1540 [19242] libc: strtol incorrect in Turkish locales
1541 [19243] malloc: reused_arena can pick an arena on the free list, leading
1542 to an assertion failure and reference count corruption
1543 [19253] time: tzset() ineffective when temporary TZ did not include DST
1545 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
1546 [19270] math: [hppa] Shared libm missing __isnanl
1547 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
1548 MAP_HUGETLB and MAP_STACK defines
1549 [19313] nptl: Wrong __cpu_mask for x32
1550 [19347] libc: grantpt: try to force a specific gid even without pt_chown
1551 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
1552 [19350] math: [ldbl-128ibm] sinhl spurious overflows
1553 [19351] math: [ldbl-128ibm] logl inaccurate near 1
1554 [19363] time: x32: times() return value wrongly truncates/sign extends
1556 [19367] dynamic-link: Improve branch prediction on Silvermont
1557 [19369] network: Default domain name not reset by res_ninit when "search"
1558 / "domain" entry is removed from resolv.conf
1559 [19375] math: powerpc: incorrect results for POWER7 logb with negative
1561 [19385] localedata: bg_BG: time separator should be colon, not comma
1562 [19408] libc: linux personality syscall wrapper may erroneously return an
1563 error on 32-bit architectures
1564 [19415] libc: dladdr returns wrong names on hppa
1565 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
1566 IBM905, IBM907, and IBM909
1567 [19439] math: Unix98 isinf and isnan functions conflict with C++11
1568 [19443] build: build failures with -DDEBUG
1569 [19451] build: Make check fails on test-double-vlen2
1570 [19462] libc: Glibc failed to build with -Os
1571 [19465] math: Wrong code with -Os
1572 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
1574 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
1576 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
1577 [19486] math: S390: Math tests fail with "Exception Inexact set".
1578 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
1579 [19550] libc: [mips] mmap negative offset handling inconsistent with other
1581 [19590] math: Fail to build shared objects that use libmvec.so functions.
1585 * The following bugs are resolved with this release:
1587 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
1588 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
1589 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
1590 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
1591 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
1592 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
1593 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
1594 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
1595 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
1596 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
1597 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
1598 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
1599 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
1600 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
1601 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
1602 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
1603 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
1604 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
1605 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
1606 18657, 18676, 18694, 18696, 18887.
1608 * Cache information can be queried via sysconf() function on s390 e.g. with
1609 _SC_LEVEL1_ICACHE_SIZE as argument.
1611 * A buffer overflow in gethostbyname_r and related functions performing DNS
1612 requests has been fixed. If the NSS functions were called with a
1613 misaligned buffer, the buffer length change due to pointer alignment was
1614 not taken into account. This could result in application crashes or,
1615 potentially arbitrary code execution, using crafted, but syntactically
1616 valid DNS responses. (CVE-2015-1781)
1618 * The time zone file parser has been made more robust against crafted time
1619 zone files, avoiding heap buffer overflows related to the processing of
1620 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
1621 large time zone data files. Overly long time zone specifiers in the TZ
1622 variable no longer result in stack overflows and crashes.
1624 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
1625 for LD and GD on x86 and x86-64, has been implemented. You will need
1626 binutils-2.24 or later to enable this optimization.
1628 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
1629 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
1630 Hat). These updates cause user visible changes, such as the fix for bug
1633 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
1634 and getXXbyYY NSS calls for the same database, causing a denial-of-service
1635 condition in some applications.
1637 * Added vector math library named libmvec with the following vectorized x86_64
1638 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
1640 The library can be disabled with --disable-mathvec. Use of the functions is
1641 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
1642 Shared library libmvec.so is linked in as needed when using -lm (no need to
1643 specify -lmvec explicitly for not static builds).
1644 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
1646 * A new fmemopen implementation has been added with the goal of POSIX
1647 compliance. The new implementation fixes the following long-standing
1648 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
1649 old implementation is still present for use be by existing binaries.
1651 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
1652 releases. It has been fixed to match 2.19 and older, but binaries built
1653 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
1655 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
1656 Contributed by Roland McGrath (Google).
1658 * The header <regexp.h> is deprecated, and will be removed in a future
1659 release. Use of this header will trigger a deprecation warning.
1660 Application developers should update their code to use <regex.h> instead.
1662 This header was formerly part of SUS, but was deprecated in 1994 and
1663 removed from the standard in 2001. Also, the glibc implementation
1664 leaks memory. See BZ#18681 for more details.
1668 * The following bugs are resolved with this release:
1670 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
1671 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
1672 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
1673 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
1674 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
1675 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
1676 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
1677 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
1678 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
1679 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
1682 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
1683 too little memory for the to-be-scanned arguments and overflow the
1684 allocated buffer. The implementation now correctly computes the required
1685 buffer size when using malloc, and switches to malloc from alloca as
1688 * A new semaphore algorithm has been implemented in generic C code for all
1689 machines. Previous custom assembly implementations of semaphore were
1690 difficult to reason about or ensure that they were safe. The new version
1691 of semaphore supports machines with 64-bit or 32-bit atomic operations.
1692 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
1693 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
1695 * Port to Altera Nios II has been contributed by Mentor Graphics.
1697 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
1698 implementations for powerpc64/powerpc64le.
1699 Implemented by Adhemerval Zanella (IBM).
1701 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
1702 and powerpc64le. This may improve lock scaling of existing programs on
1703 HTM capable systems. The lock elision code is only enabled with
1704 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
1705 powerpc will issue a transaction abort on every syscall to avoid side
1706 effects being visible outside transactions.
1708 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
1709 AArch64. Contributed by ARM Ltd.
1711 * i386 memcpy functions optimized with SSE2 unaligned load/store.
1713 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
1714 under certain input conditions resulting in the execution of a shell for
1715 command substitution when the application did not request it. The
1716 implementation now checks WRDE_NOCMD immediately before executing the
1717 shell and returns the error WRDE_CMDSUB as expected.
1719 * CVE-2012-3406 printf-style functions could run into a stack overflow when
1720 processing format strings with a large number of format specifiers.
1722 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
1723 infinite loop if the DNS response contained a PTR record of an unexpected
1726 * The minimum GCC version that can be used to build this version of the GNU
1727 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
1728 still be used to compile programs using the GNU C Library.
1730 * The GNU C Library is now built with -Werror by default. This can be
1731 disabled by configuring with --disable-werror.
1733 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
1735 * The obsolete sigvec function has been removed. This was the original
1736 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
1737 programs have been using instead for about 25 years. Of course, ABI
1738 compatibility for old binaries using sigvec remains intact.
1740 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
1741 with newer versions of bison.
1743 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
1744 The original MIPS o32 hard-float ABI requires an FPU where double-precision
1745 registers overlay two consecutive single-precision registers. MIPS32R2
1746 introduced a new FPU mode (FR=1) where double-precision registers extend the
1747 corresponding single-precision registers which is incompatible with the
1748 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
1749 require the use of FR=1 making a transition necessary. New o32 ABI
1750 extensions enable users to migrate over time from the original o32 ABI
1751 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
1752 tracks the ABI of any loaded object and verifies that new objects are
1753 compatible. Mode transitions will also be requested as required and
1754 unsupportable objects will be rejected. The ABI checks include both soft and
1755 hard float ABIs for o32, n32 and n64.
1757 GCC 5 with GNU binutils 2.25 onwards:
1758 It is strongly recommended that all o32 system libraries are built using the
1759 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
1760 with the original and all new o32 ABI extensions. Configure a MIPS GCC
1761 compiler using --with-fp-32=xx to set this by default.
1765 * The following bugs are resolved with this release:
1767 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
1768 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
1769 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
1770 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
1771 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
1772 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
1773 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
1774 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
1775 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
1776 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
1777 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
1778 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
1779 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
1780 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
1781 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
1783 * Reverted change of ABI data structures for s390 and s390x:
1784 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
1785 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
1786 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
1787 are preserved pointing straight to the same implementation as the old ones.
1788 Given that, new callers will simply provide a too-big buffer to these
1789 functions. Any applications/libraries out there that embed jmp_buf or
1790 ucontext_t in an ABI-relevant data structure that have already been rebuilt
1791 against 2.19 headers will have to rebuilt again. This is necessary in any
1792 case to revert the breakage in their ABI caused by the glibc change.
1794 * Support for file description locks is added to systems running the
1795 Linux kernel. The standard file locking interfaces are extended to
1796 operate on file descriptions, not file descriptors, via the use of
1797 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
1798 are associated with an open file instead of a process.
1800 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
1802 * The minimum Linux kernel version that this version of the GNU C Library
1803 can be used with is 2.6.32.
1805 * Running the testsuite no longer terminates as soon as a test fails.
1806 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
1807 with PASS or FAIL lines for individual tests. A summary of the results is
1808 printed, including a list of failing lists, and "make check" exits with
1809 error status if there were any unexpected failures. "make check
1810 stop-on-test-failure=y" may be used to keep the old behavior.
1812 * The am33 port, which had not worked for several years, has been removed
1815 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
1816 supported; they now act the same as _DEFAULT_SOURCE (but generate a
1817 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
1818 conflicted with POSIX (support for which was removed in 2.19), the
1819 interfaces those macros enabled remain available when compiling with
1820 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
1821 test macros defined.
1823 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
1825 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
1826 This may improve lock scaling of existing programs on TX capable systems.
1827 The lock elision code is only built with --enable-lock-elision=yes and
1828 then requires a GCC version supporting the TX builtins. With lock elision
1829 default mutexes are elided via __builtin_tbegin, if the cpu supports
1830 transactions. By default lock elision is not enabled and the elision code
1833 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
1834 copy the path argument. This allowed programs to cause posix_spawn to
1835 deference a dangling pointer, or use an unexpected pathname argument if
1836 the string was modified after the posix_spawn_file_actions_addopen
1839 * All supported architectures now use the main glibc sysdeps directory
1840 instead of some being in a separate "ports" directory (which was
1841 distributed separately before glibc 2.17).
1843 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
1844 On configurations that support it (all Linux configurations), it's now
1845 used regardless of the --enable-add-ons switch to configure. It is no
1846 longer possible to build such configurations without pthreads support.
1848 * Locale names, including those obtained from environment variables (LANG
1849 and the LC_* variables), are more tightly checked for proper syntax.
1850 setlocale will now fail (with EINVAL) for locale names that are overly
1851 long, contain slashes without starting with a slash, or contain ".." path
1852 components. (CVE-2014-0475) Previously, some valid locale names were
1853 silently replaced with the "C" locale when running in AT_SECURE mode
1854 (e.g., in a SUID program). This is no longer necessary because of the
1857 * On x86-64, the dynamic linker's lazy-binding support is now compatible
1858 with application code using Intel MPX instructions. (With all previous
1859 versions, the MPX register state could be clobbered when making calls
1860 into or out of a shared library.) Note that while the new dynamic
1861 linker is compatible with all known x86 hardware whether or not it
1862 supports Intel MPX, some x86 instruction-set emulators might fail to
1863 handle the new instruction encodings. This is known to affect Valgrind
1864 versions up through 3.9 (but will be fixed in the forthcoming 3.10
1865 release), and might affect other tools that do instruction emulation.
1867 * Support for loadable gconv transliteration modules has been removed.
1868 The support for transliteration modules has been non-functional for
1869 over a decade, and the removal is prompted by security defects. The
1870 normal gconv conversion modules are still supported. Transliteration
1871 with //TRANSLIT is still possible, and the //IGNORE specifier
1872 continues to be supported. (CVE-2014-5119)
1874 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
1875 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
1876 resulting a denial-of-service security vulnerability in applications which
1877 use functions related to iconv. (CVE-2014-6040)
1881 * The following bugs are resolved with this release:
1883 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
1884 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
1885 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
1886 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
1887 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
1888 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
1889 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
1890 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
1891 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
1892 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
1893 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
1894 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
1895 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
1896 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
1897 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
1898 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
1899 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
1900 16431, 16453, 16474, 16506, 16510, 16529
1902 * Slovenian translations for glibc messages have been contributed by the
1903 Translation Project's Slovenian team of translators.
1905 * The public headers no longer use __unused nor __block. This change is to
1906 support compiling programs that are derived from BSD sources and use
1907 __unused internally, and to support compiling with Clang's -fblock
1908 extension which uses __block.
1910 * CVE-2012-4412 The strcoll implementation caches indices and rules for
1911 large collation sequences to optimize multiple passes. This cache
1912 computation may overflow for large collation sequences and may cause a
1913 stack or buffer overflow. This is now fixed to use a slower algorithm
1914 which does not use a cache if there is an integer overflow.
1916 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
1917 rules for large collation sequences to optimize multiple passes and falls
1918 back to alloca if malloc fails, resulting in a possible stack overflow.
1919 The implementation now falls back to an uncached collation sequence lookup
1922 * CVE-2013-4788 The pointer guard used for pointer mangling was not
1923 initialized for static applications resulting in the security feature
1924 being disabled. The pointer guard is now correctly initialized to a
1925 random value for static applications. Existing static applications need
1926 to be recompiled to take advantage of the fix (bug 15754).
1928 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
1929 to the d_name member of struct dirent, or omit the terminating NUL
1930 character. (Bugzilla #14699).
1932 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
1933 aligned_alloc functions could allocate too few bytes or corrupt the
1934 heap when passed very large allocation size values (Bugzilla #15855,
1937 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
1938 for AF_INET6 has been fixed (Bugzilla #16072).
1940 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
1941 pap_CW, quz_PE, the_NP.
1943 * Substantially revised locales: gd_GB, ht_HT
1945 * The LC_ADDRESS field was updated to support country_car for almost all
1948 * ISO 1427 definitions were updated.
1950 * ISO 3166 definitions were updated.
1952 * The localedef utility now supports --big-endian and --little-endian
1953 command-line options to generate locales for a different system from that
1954 for which the C library was built.
1956 * Binary locale files now only depend on the endianness of the system for
1957 which they are generated and not on other properties of that system. As a
1958 consequence, binary files generated with new localedef may be incompatible
1959 with old versions of the GNU C Library, and binary files generated with
1960 old localedef may be incompatible with this version of the GNU C Library,
1961 in the following circumstances:
1963 + Locale files may be incompatible on m68k systems.
1965 + Locale archive files (but not separate files for individual locales) may
1966 be incompatible on systems where plain "char" is signed.
1968 * The configure option --disable-versioning has been removed. Builds with
1969 --disable-versioning had not worked for several years.
1971 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
1972 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
1974 * SystemTap probes for malloc have been introduced.
1976 * SystemTap probes for slow multiple precision fallback paths of
1977 transcendental functions have been introduced.
1979 * Support for powerpc64le has been added.
1981 * The soft-float powerpc port now supports e500 processors.
1983 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
1985 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
1986 set of header declarations that are enabled by default, even when other
1987 feature test macros or compiler options such as -std=c99 would otherwise
1988 disable some of those declarations.
1990 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
1991 conflict with POSIX. The libbsd-compat library (which was a dummy library
1992 that did nothing) has also been removed.
1994 * Preliminary documentation about Multi-Thread, Async-Signal and
1995 Async-Cancel Safety has been added.
1997 * Change of ABI data structures for s390 and s390x:
1998 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
1999 allow for future hardware extensions. All library functions that accept or
2000 return these structures were versioned in order to provide backwards
2001 compatibility with existing code. However, not all cases can be handled
2002 with interface versioning. If an application embeds either structure into
2003 another structure and that structure is passed to another compilation unit
2004 which expects the newer larger-sized object then any access to the new
2005 fields will result in undefined behaviour. Similarly any access to fields
2006 that were moved by the enlarging of the structures will cause undefined
2007 behaviour. To fix the undefined behaviour all objects that are part of the
2008 final in-memory image must agree on the size of structures, and this may
2009 require recompilation.
2013 * The following bugs are resolved with this release:
2015 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
2016 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
2017 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
2018 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
2019 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
2020 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
2021 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
2022 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
2023 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
2024 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
2025 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
2026 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
2027 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
2030 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
2031 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
2032 Distributions can re-enable building and using pt_chown via the new configure
2033 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
2034 considerable security risks and should only be used if the distribution
2035 understands and accepts the risks.
2037 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
2040 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
2041 fixed (Bugzilla #15330).
2043 * Add support for calling C++11 thread_local object destructors on thread
2044 and program exit. This needs compiler support for offloading C++11
2045 destructor calls to glibc.
2047 * Improved worst case performance of libm functions with double inputs and
2050 * Support for priority inherited mutexes in pthread condition variables on
2051 non-x86 architectures.
2053 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
2055 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
2057 * Optimized string functions for ARM. Implemented by Will Newton and
2060 * Optimized libm functions for SPARC. Implemented by David S. Miller.
2062 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
2065 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
2066 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
2068 * Added a benchmark framework to track performance of functions in glibc.
2070 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
2071 It is based on draft TS 18661 and currently enabled as a GNU extension.
2073 * On Linux, the clock function now uses the clock_gettime system call
2074 for improved precision, rather than old times system call.
2076 * Added support for version-3 tz format files. This is needed when using
2077 the tz database release 2013e or later, and affects a few unusual cases --
2078 currently only TZ='America/Godthab' for time stamps after 2037.
2080 * Added new API functions pthread_getattr_default_np and
2081 pthread_setattr_default_np to get and set the default pthread
2082 attributes of a process.
2084 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
2085 This may improve lock scaling of existing programs on TSX capable systems.
2086 When the --enable-lock-elision=yes parameter is specified at configure
2087 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
2090 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
2091 availability). Implemented by Ryan S. Arnold.
2093 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
2097 * The following bugs are resolved with this release:
2099 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
2100 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
2101 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
2102 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
2103 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
2104 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
2105 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
2106 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
2107 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
2108 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
2109 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
2110 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
2111 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
2112 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
2113 14879, 14889, 14893, 14898, 14914.
2115 * Optimization of memcpy for MIPS.
2117 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
2118 EMFILE has been fixed (Bugzilla #14889).
2120 * The add-on ports collection is now distributed in the "ports" subdirectory
2121 of the main GNU C Library distribution, rather than separately.
2123 * Port to ARM AArch64 contributed by Linaro.
2125 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
2126 Optimized versions of memcpy, memset, and memcmp added for System z10 and
2128 Implemented by Andreas Krebbel.
2130 * The new function secure_getenv allows secure access to the environment,
2131 returning NULL if running in a SUID/SGID process. This function replaces
2132 the internal function __secure_getenv.
2134 * SystemTap static probes have been added into the dynamic linker.
2135 Implemented by Gary Benson.
2137 * Optimizations of string functions strstr, strcasestr and memmem.
2138 Implemented by Maxim Kuvyrkov.
2140 * The minimum Linux kernel version that this version of the GNU C Library
2141 can be used with is 2.6.16.
2143 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
2144 powerpc POWER7. Implemented by Will Schmidt.
2146 * New configure option --disable-nscd builds the C library such that it
2147 never attempts to contact the Name Service Caching Daemon (nscd).
2148 New configure option --disable-build-nscd avoids building nscd itself;
2149 this is the default if --disable-nscd is used.
2151 * Improved support for cross-compilation, including cross-testing and
2152 bootstrap builds without a previously built glibc.
2154 * Several testsuite tests are now able to test multiple IFUNC variants of an
2155 interface, rather than just testing the one that would be chooen by
2158 * New configure options --with-bugurl and --with-pkgversion, for
2159 distributors to use to embed their bug-reporting and package version
2160 information in --help and --version output.
2162 * The ttyname and ttyname_r functions on Linux now fall back to searching for
2163 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
2164 allows creation of chroots without the procfs mounted on /proc.
2166 * The `crypt' function now fails if passed salt bytes that violate the
2167 specification for those values. On Linux, the `crypt' function will
2168 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
2169 enabled, and fail on encrypted strings using the MD5 or DES algorithm
2170 when the mode is enabled.
2172 * The `clock_*' suite of functions (declared in <time.h>) is now available
2173 directly in the main C library. Previously it was necessary to link with
2174 -lrt to use these functions. This change has the effect that a
2175 single-threaded program that uses a function such as `clock_gettime' (and
2176 is not linked with -lrt) will no longer implicitly load the pthreads
2177 library at runtime and so will not suffer the overheads associated with
2178 multi-thread support in other code such as the C++ runtime library.
2180 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
2185 * The following bugs are resolved with this release:
2187 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
2188 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
2189 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
2190 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
2191 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
2192 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
2193 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
2194 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
2195 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
2196 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
2197 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
2198 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
2199 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
2200 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
2201 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
2202 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
2203 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
2204 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
2205 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
2206 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
2207 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
2208 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
2211 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
2212 configuring glibc with:
2213 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
2214 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
2215 Implemented by H.J. Lu.
2219 + define static_assert
2221 + do not declare gets
2223 + declare at_quick_exit and quick_exit also for ISO C11
2225 + aligned_alloc. NB: The code is deliberately allows the size parameter
2226 to not be a multiple of the alignment. This is a moronic requirement
2227 in the standard but it is only a requirement on the caller, not the
2230 + timespec_get added
2232 + uchar.h support added
2234 + CMPLX, CMPLXF, CMPLXL added
2236 Implemented by Ulrich Drepper.
2238 * Support for the IA-64 has been moved to ports.
2240 * Remove support for anything but ELF binary format
2242 * Checking versions of poll, ppoll added.
2243 Implemented by Ulrich Drepper.
2245 * More generic and 64-bit performance optimizations to math functions.
2246 Implemented by Ulrich Drepper.
2248 * New configure option --enable-obsolete-rpc makes the deprecated RPC
2249 headers and functions available at compile time as they were before
2250 version 2.14. This option will be removed at some time in the future
2251 after the TI-RPC library becomes fully sufficient for the needs of
2252 existing applications.
2254 * Compatibility code for Linux kernel versions before 2.4 has been removed.
2255 Note that glibc is not expected to work with any Linux kernel version
2258 * New header <sys/auxv.h> and function getauxval allowing easy access to
2259 the AT_* key-value pairs passed from the Linux kernel. The header also
2260 defines the HWCAP_* bits associated with the AT_HWCAP key.
2262 * New locales: mag_IN
2264 * New configure option --enable-systemtap builds SystemTap static probes
2265 into libc for setjmp and longjmp and into libpthread for various operations.
2266 So far the setjmp/longjmp probes and some of the libpthread probes are
2267 provided only for i*86 and x86_64.
2268 Implemented by Roland McGrath and Rayson Ho.
2270 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
2272 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
2275 * More optimized functions for SPARC. Implemented by David S. Miller.
2277 * Improved support for cross-compilation, especially bootstrap builds
2278 without a previously built glibc.
2280 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
2281 Chris Metcalf from Tilera.
2283 * Support for the old ARM ABI has been removed from ports. Only the EABI is
2284 now supported for ARM processors.
2286 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
2287 as the name of the dynamic linker, to distinguish it from the
2288 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
2290 * Support for CRIS has been removed from ports.
2292 * A new class of installed header has been documented for low-level
2293 platform-specific functionality. PowerPC added the first instance with a
2294 function to provide time base register access. Contributed by Tulio
2295 Magno Quites Machado Filho.
2297 * ix86 configurations now install header files that are consistent with
2298 what x86-64 configurations install. These same header files can be used
2299 for -m32, -m64, or -mx32 builds.
2300 Contributed by H.J. Lu.
2302 * Math library bug fixes. A thorough audit of all open math library bugs was
2303 conducted by Joseph Myers. Significant progress was made on many math
2304 library bugs resulting in more accurate exceptions and function results.
2305 Many thanks to all those that contributed including Andreas Jaeger for his
2306 patch review and work on the x87 trigonometric instruction issues.
2308 * Timezone data is no longer installed. Timezone-related binaries and scripts
2309 will continue to be installed. Users should obtain their timezone data from
2310 their distribution provider or from the tzdata package at
2311 <ftp://munnari.oz.au/pub/>.
2315 * The following bugs are resolved with this release:
2317 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
2318 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
2319 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
2320 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
2321 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
2322 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
2323 13484, 13506, 13515, 13523, 13524, 13538, 13540
2325 * New program pldd to list loaded object of a process
2326 Implemented by Ulrich Drepper.
2328 * Add nss_db support back to glibc. No more dependency on Berkeley db
2329 and support for initgroups lookups.
2330 Implemented by Ulrich Drepper.
2332 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
2333 Contributed by HJ Lu.
2335 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
2336 Contributed by HJ Lu.
2338 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
2339 on x86-32 and x86-64.
2340 Contributed by Liubov Dmitrieva.
2342 * Optimized strchr and strrchr for SSE on x86-32.
2343 Contributed by Liubov Dmitrieva.
2345 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
2346 for x86-64 and x86-32.
2347 Contributed by Liubov Dmitrieva.
2349 * New interfaces: scandirat, scandirat64
2350 Implemented by Ulrich Drepper.
2352 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
2353 Implemented by Ulrich Drepper.
2355 * nscd now also caches the netgroup database.
2356 Implemented by Ulrich Drepper.
2358 * Integrate libm with gcc's -ffinite-math-only option.
2359 Implemented by Ulrich Drepper.
2361 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
2362 to math functions. Implemented by Ulrich Drepper.
2364 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
2365 Implemented by Ulrich Drepper.
2367 * New Linux interfaces: process_vm_readv, process_vm_writev
2369 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
2370 Implemented by Ulrich Drepper.
2372 * Optimized nearbyint and strcasecmp for PPC.
2373 Implemented by Adhemerval Zanella.
2375 * New locales: bho_IN, unm_US, es_CU, ta_LK
2379 * The following bugs are resolved with this release:
2381 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
2382 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
2383 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
2384 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
2385 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
2386 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
2387 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
2388 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
2389 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
2390 12795, 12811, 12813, 12814, 12841
2392 * The RPC implementation in libc is obsoleted. Old programs keep working
2393 but new programs cannot be linked with the routines in libc anymore.
2394 Programs in need of RPC functionality must be linked against TI-RPC.
2395 The TI-RPC implementation is IPv6 enabled and there are other benefits.
2397 Visible changes of this change include (obviously) the inability to link
2398 programs using RPC functions without referencing the TI-RPC library and the
2399 removal of the RPC headers from the glibc headers.
2400 Implemented by Ulrich Drepper.
2402 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
2403 syncfs, setns, sendmmsg
2405 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
2406 yue_HK, lij_IT, mhr_RU
2408 * New encodings: CP770, CP771, CP772, CP773, CP774
2410 * New program sotruss to trace calls through PLTs
2411 Implemented by Ulrich Drepper.
2413 * The malloc hook implementation is marked deprecated and will be removed
2414 from the default implementation in the next version. The design never
2415 worked ever since the introduction of threads. Even programs which do
2416 not create threads themselves can use multiple threads created internally.
2420 * The following bugs are resolved with this release:
2422 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
2423 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
2424 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
2425 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
2428 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
2430 * POWER7 optimizations: memset, memcmp, strncmp
2432 * New optimized string functions for x86-64: strnlen (SSE2),
2433 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
2434 Implemented by Ulrich Drepper.
2438 * The following bugs are resolved with this release:
2440 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
2441 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
2442 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
2443 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
2444 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
2445 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
2446 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
2447 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
2449 * New interfaces: pthread_getname_np, pthread_setname_np
2451 * New Linux interface: recvmmsg
2453 * STT_GNU_IFUNC implemented for Sparc by David Miller.
2455 * The dynamic linker now recognizes supported ABI versions from the
2456 EI_ABIVERSION field in the ELF header.
2457 Implemented by Ulrich Drepper.
2459 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
2460 will not be used to fill in password fields in the passwd.byname replies.
2461 Instead it is used to synthesize the shadow.byname table, should it be
2462 missing. This is a useful mode in some installations involving Solaris.
2463 Implemented by Ulrich Drepper.
2465 * New locales: kok_IN, sq_MK, cv_RU
2469 * The following bugs are resolved with this release:
2471 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
2472 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
2473 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
2474 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
2475 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
2476 10789, 10817, 10823, 10840, 10847
2478 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
2480 Implemented by Ulrich Drepper.
2482 * Checking version of longjmp added that fails if an uninitialized stack
2483 frame would be created. Implemented by Ulrich Drepper.
2485 * STT_GNU_IFUNC is now supported in static executables.
2486 Implemented by H.J. Lu.
2488 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
2490 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
2491 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
2492 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
2493 Contributed by H.J. Lu.
2495 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
2496 Implemented by Ulrich Drepper.
2498 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
2500 Contributed by H.J. Lu.
2502 * Support for fma instruction in AVX on x86-64.
2503 Implemented by H.J. Lu and Ulrich Drepper.
2505 * AVX support in x86-64 auditing support in ld.so.
2506 Implemented by H.J. Lu.
2508 * STB_GNU_UNIQUE support added.
2509 Implemented by Ulrich Drepper.
2511 * Implement second fallback mode for optimized DNS lookup for even more
2512 broken environments. If two requests from the same port are not
2513 handled correctly close the socket and open a new one before sending
2514 the second request. The 'single-request-reopen' option in /etc/resolv.conf
2515 can be used to select this mode right away, instead of rediscovering the
2516 necessity is every process again.
2517 Implemented by Ulrich Drepper.
2519 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
2520 Implemented by Adam Tkac.
2522 * Optimized iconv conversions for S390x.
2523 Implemented by Andreas Krebbel.
2525 * Using condvars with PI mutexes is now more efficient due to kernel
2526 support for requeueing to PI futexes. NPTL support added for x86-64.
2527 Implemented by Ulrich Drepper.
2529 * New locales: ps_AF, my_MM
2533 * The following bugs are resolved with this release:
2535 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
2536 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
2537 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
2538 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
2539 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
2541 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
2542 Implemented by Ulrich Drepper.
2544 * New Linux interfaces: accept4, fallocate, fallocate64.
2545 Implemented by Ulrich Drepper.
2547 * Correct declarations of string function when used in C++ code. This
2548 could lead to compile errors for invalid C++ code.
2550 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
2553 * New POSIX 2008 interface: psiginfo
2554 Implemented by Ulrich Drepper.
2556 * New ISO C++1x interfaces: quick_exit, at_quick_exit
2557 Implemented by Ulrich Drepper.
2559 * Support for selecting between multiple function definitions at runtime
2560 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
2562 * The libcrypt library can now use the hash function implementations in
2563 NSS. Implemented by Ulrich Drepper.
2565 * The malloc implementation can be compiled to be less memory efficient
2566 but higher performing in multi-threaded programs.
2567 Implemented by Ulrich Drepper.
2569 * New locales: nan_TW@latin, ks_IN
2571 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
2572 Implemented by Ulrich Drepper.
2574 * Extended printf hook support. It is possible to use user-defined types
2575 and extend existing format specifiers.
2576 Implemented by Ulrich Drepper.
2578 * Handling for group shadow files has been added.
2579 Implemented by Ulrich Drepper.
2581 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
2582 servers (the case, e.g., for some people using the built-in DNS
2583 server in ADSL modems/routers). There is a once-per-process timeout
2584 in case of a broken server. To avoid it, users can run nscd or put
2585 'options single-request' in /etc/resolv.conf.
2586 Implemented by Ulrich Drepper.
2590 * The following bugs are resolved with this release:
2592 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
2593 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
2594 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
2595 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
2596 6968, 6974, 6980, 6995, 7008, 7009, 7029
2598 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
2599 up at the same time. Implemented by Ulrich Drepper.
2601 * TLS descriptors for LD and GD on x86 and x86-64.
2602 Implemented by Alexandre Oliva.
2604 * getaddrinfo now handles DCCP and UDPlite.
2605 Implemented by Ulrich Drepper.
2607 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
2608 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
2609 Implemented by Ulrich Drepper.
2611 * New implementation of memmem, strstr, and strcasestr which is O(n).
2612 Implemented by Eric Blake.
2614 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
2616 * Implement "e" option for popen to open file descriptor with the
2617 close-on-exec flag set. Implemented by Ulrich Drepper.
2619 * Implement "b" mode for fmemopen. In this mode writes writes don't
2620 implicitly add a NUL byte and seeks from the end of the buffer really
2621 use the buffer end, not the string length as the basis.
2622 Implemented by Ulrich Drepper.
2624 * Many functions, exported and internal, now atomically set the close-on-exec
2625 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
2627 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
2629 Implemented by Pravin Satpute.
2631 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
2635 * The following bugs are resolved with this release:
2637 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
2638 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
2639 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
2640 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
2641 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
2642 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
2643 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
2645 * New locales: bo_CN, bo_IN, shs_CA.
2647 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
2649 * Sorting rules for some Indian languages (Devanagari and Gujarati).
2650 Implemented by Pravin Satpute.
2652 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
2654 * nscd caches now all timeouts for DNS entries
2655 Implemented by Ulrich Drepper.
2657 * nscd is more efficient and wakes up less often.
2658 Implemented by Ulrich Drepper.
2660 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
2661 vdprintf, and obstack_vprintf.
2662 Implemented by Jakub Jelinek.
2664 * Faster memset for x86-64.
2665 Implemented by Harsha Jagasia and H.J. Lu.
2667 * Faster memcpy on x86.
2668 Implemented by Ulrich Drepper.
2670 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
2671 Implemented by Ulrich Drepper.
2673 * Faster sqrt and sqrtf implemention for some PPC variants.
2674 Implemented by Steven Munroe.
2678 * The following bugs are resolved with this release:
2680 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
2681 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
2682 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
2683 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
2684 5071, 5103, 5104, 5112, 5113, 5184, 5186
2686 * More checking functions: fread, fread_unlocked, open*, mq_open.
2687 Implemented by Jakub Jelinek and Ulrich Drepper.
2689 * Extend fortification to C++. Implemented by Jakub Jelinek.
2691 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
2692 by not recognizing 'a' as a modifier when those specs are requested.
2693 Implemented by Jakub Jelinek.
2695 * PPC optimizations to math and string functions.
2696 Implemented by Steven Munroe.
2698 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
2699 options to be passed. Implemented by Ulrich Drepper.
2701 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
2703 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
2704 Implemented by Ulrich Drepper.
2706 * Handle private futexes in the NPTL implementation.
2707 Implemented by Jakub Jelinek and Ulrich Drepper.
2709 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
2710 Implemented by Roland McGrath and Ulrich Drepper.
2712 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
2714 * SHA-256 and SHA-512 based password encryption.
2715 Implemented by Ulrich Drepper.
2717 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
2718 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
2721 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
2722 Implemented by Ulrich Drepper.
2726 * The following bugs are resolved with this release:
2728 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
2729 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
2730 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
2731 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
2732 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
2733 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
2734 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
2737 * New Linux interfaces: epoll_pwait, sched_getcpu.
2739 * New generic interfaces: strerror_l.
2741 * nscd can now cache the services database. Implemented by Ulrich Drepper.
2745 * The following bugs are resolved with this release:
2747 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
2748 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
2749 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
2750 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
2751 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
2752 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
2753 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
2754 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
2755 3225, 3251, 3252, 3253, 3273
2757 * For Linux, the sorting of addresses returned by getaddrinfo now also
2758 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
2759 Implemented by Ulrich Drepper.
2761 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
2762 Implemented by Ulrich Drepper.
2764 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
2766 * New iconv module for MIK. Contributed by Alexander Shopov.
2768 * For sites with broken group and/or passwd database, the auto-propagate
2769 option of nscd can prevent creating ID lookup entries from the results
2770 of a name lookup and vice versa. This usually is no problem but some
2771 site might have problems with the default behavior.
2772 Implemented by Ulrich Drepper.
2774 * Iterating over entire database in NIS can be slow. With the
2775 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
2776 to trade time for memory. The entire database will be read at once.
2777 Implemented by Ulrich Drepper.
2779 * The interfaces introduced in RFC 3542 have been implemented by
2782 * Support for the new ELF hash table format was added by Ulrich Drepper.
2784 * Support for priority inheritance mutexes added by Jakub Jelinek and
2787 * Support for priority protected mutexes added by Jakub Jelinek.
2789 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
2790 or_IN, csb_PL, fy_NL, sr_ME.
2794 * More overflow detection functions.
2796 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
2797 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
2799 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
2800 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
2801 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
2802 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
2803 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
2804 by Masahide Washizawa.
2806 * It is now possible to install audit libraries for the dynamic linker using
2807 LD_AUDIT. Implemented by Ulrich Drepper.
2809 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
2810 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
2811 For a libc and libpthread that works well on Linux 2.4 kernels, we
2812 recommend using the stable 2.3 branch.
2814 * The new function open_wmemstream acts like open_memstream,
2815 but uses a wchar_t wide character buffer.
2817 * The new function ppoll is an improved version of poll, similar to pselect.
2819 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
2820 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
2821 renameat, unlinkat, linkat, symlinkat, readlinkat.
2823 * New Linux kernel system calls: unshare,
2824 inotify_init, inotify_add_watch, inotify_rm_watch.
2826 * The euidaccess function is now also known by the alias eaccess,
2827 for compatibility with some other systems.
2829 * Timezone data updated to 2006b version.
2833 * The following bugs are resolved with this release:
2835 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
2836 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
2837 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
2838 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
2839 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
2840 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
2842 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2844 * As of this release, GCC 4 can be used to compile the C Library.
2846 * Timezone data updated to 2005m version.
2850 * The following bugs are resolved with this release:
2852 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
2853 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
2854 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
2855 777, 787, 821, 822, 823, 825
2857 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2861 * Support for RFC 3678. Real implementations exist only for Linux so far.
2862 Implemented by Ulrich Drepper.
2864 * nscd can now cache entries persistently. Expiring entries are reloaded.
2865 For speedups the cache can be shared in memory with client processes.
2866 Implemented by Ulrich Drepper.
2868 * nscd can now perform SELinux checks.
2869 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
2871 * getaddrinfo queries are now cached. Canonical name lookup is performed
2873 Implemented by Ulrich Drepper.
2875 * The nothrow function attribute is used when headers are used by gcc when
2876 compiling C code. This can avoid significant amounts of exception
2879 * The malloc functions perform more error checking and are stricter when
2880 it comes to reacting on errors. The default action is to terminate
2881 the process after showing an error message. Implemented by Ulrich Drepper.
2883 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
2884 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
2886 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
2887 namespaces using the new function dlmopen(). This feature is of course,
2888 like most other dynamic loading functionality, not available in statically
2889 linked applications. Implemented by Ulrich Drepper.
2891 * Low-overhead boundary checking variants of string and some stdio functions
2892 were added. These are to be used in conjunction with a gcc patch by
2893 Jakub Jelinek which adds calls to these functions if possible.
2894 Implemented by Jakub Jelinek and Ulrich Drepper.
2896 * Old code for several operating systems and machine architectures that
2897 have not been in working condition in a long time have been removed from
2898 the main source tree maintained by the GNU C Library's maintainers.
2899 These files are now reside in the separate `ports' source module
2900 that is usable as an add-on when building the library.
2904 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
2905 interrogate the dynamic linker, compatible with the Solaris interface.
2907 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
2908 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
2910 * getifaddrs now uses the netlink interface on Linux to get its information.
2911 Implemented by Thorsten Kukuk.
2913 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
2914 Implemented by Ulrich Drepper.
2916 * support for non-executable stacks on x86 has been added. Changes mostly
2919 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
2922 * getaddrinfo now performs destination address selection according to
2927 * Thread-safe interfaces for many functions that access locale data
2928 were added in version 2.3, but these features were omitted from NEWS.
2929 Many functions have variants with an `_l' suffix that take a `locale_t'
2930 object as a parameter rather than consulting the current locale.
2931 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
2932 create and maintain `locale_t' objects. Additionally, the new function
2933 `uselocale' sets "the current locale" (as used by functions not so
2934 parameterized) set for an individual thread. These features were added
2935 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
2937 * The functions getresuid, getresgid, setresuid, and setresgid, which
2938 have long been available on Linux, are now declared in <unistd.h>
2939 and are now also available on the Hurd.
2941 * ELF thread-local storage support (TLS) now works on x86-64.
2943 * The new dynamic string token $LIB is expanded in shared library names.
2944 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
2946 * Aldy Hernandez contributed complete software floating point support for
2947 PowerPC machines with no FPU.
2949 * fexecve is implemented on Linux.
2951 * The `btowc' function should work at least twice as fast due to
2952 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
2954 * With approriate thread add-ons cancelable functions are now implemented
2955 in libc.so as well. No need to call the function in libpthread. This
2956 change allowed to finally disable the incorrect and expensive handling
2957 of weak definition in ld.so.
2959 * Yet more PLT entries in libc.so have been removed. We finally arrived
2960 at the bare minimum. Startup times improved appropriately.
2962 * Support for the new Linux/x86 system call interface was added. The
2963 AT_SYSINFO auxiliary vector entry is recognized and handled.
2967 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
2970 * iconv (the program and the interface) now accepts empty names (excluding
2971 options like //TRANSLIT) to mean "use charset of current locale".
2973 * localedef can now transliterate characters in strings which are not in
2974 the provided charmap. The information from the input locale is used.
2976 * Prelinking support was added for ELF targets. This requires additional
2977 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
2979 * Read-only stdio streams now use mmap to speed up operation by eliminating
2980 copying and buffer underflows. To use add 'm' to the mode string of
2981 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
2983 * The malloc functions were completely rewritten by Wolfram Gloger based
2984 on Doug Lea's malloc-2.7.0.c.
2986 * Isamu Hasegawa contributed a completely new and POSIX-conformant
2987 implementation of regex.
2989 * Bruno Haible upgraded the iconv and locale implementation to support
2992 * Contents of the LC_* and LANG environment variables in the CEN style are
2993 not recognized anymore. It never was used. Change by Ulrich Drepper.
2995 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
2996 thread-local storage (TLS) ABI on some platforms.
2997 Changes by Ulrich Drepper. SH support by Kaz Kojima.
2999 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
3000 EUC-JISX0213, and TSCII.
3002 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
3003 BSD-compatible interface for getting all network interface addresses.
3004 Implementation for IPv4 by Roland McGrath.
3006 * Loading of locale data is faster due to the introduction of a locale
3007 archive. Implemented by Roland McGrath and Ulrich Drepper.
3009 * Startup times are significantly reduced by not using exported functions
3010 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
3013 * Steven Munroe contributed a port to PowerPC64/Linux.
3017 * The Hurd now uses the GNU libio implementation of stdio rather than the
3018 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
3020 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
3021 with the same behavior as the Linux system call of the same name.
3025 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
3026 128-bit long double format.
3028 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
3029 IBM1161, and IBM1162 charsets.
3031 * Andreas Jaeger contributed a port to x86-64/Linux.
3033 * Peter Bruin contributed a port to PowerPC/Hurd.
3035 * libc functions using I/O streams now can handle wide-oriented streams
3038 * optimizations in the dynamic linker. Binaries created by recent binutils
3039 versions start up quicker due to reduced time spent on relocations.
3041 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
3045 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
3046 asinh, atanh, j0 for the 128-bit long double format.
3048 * Bruno Haible updated all the code handling Unicode in some form to
3049 support Unicode 3.1.
3051 * Speed of regex for single-byte locales is back to previous levels.
3052 Patch by Isamu Hasegawa.
3054 * Alpha, SPARC, and IA-64 now also using floating stacks.
3056 * Startup time of internationalized applications greatly improved through
3057 iconv cache. Use iconvconfig to generate the cache file.
3058 Contributed by Ulrich Drepper.
3060 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
3061 severe performance problems. Patch by David Mosberger.
3063 * The Hurd port got a lot more functionality like AIO, various stdio
3064 extensions, etc. Mainly done by Roland McGrath.
3066 * mtrace can now lookup symbols in shared libraries.
3070 * Intel's IA-64 math library is largely integrated. It provides fast and
3071 accurate implementatations for most basic and standard math functions
3072 in float, double, and long double format.
3074 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
3075 and asin for the 96-bit long double format and asin, log, tan for the
3076 128-bit long double format.
3078 * The beginning of a last-bit accurate math library by IBM Haifa were added.
3079 The basic double functions exist today. Contributed by Abraham Ziv
3080 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
3081 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
3083 * An asynchronous name lookup library was added. The interface is designed
3084 after POSIX AIO. The proposal was circulated beforehand to get comments.
3085 No negative ones came in. Implemented by Ulrich Drepper.
3087 * Port to S390/64bit contributed by Martin Schwidefsky
3088 <schwidefsky@de.ibm.com>.
3090 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
3091 of functions for Linux/IA-64.
3093 * The RPC code is now thread safe. Threads can now use the same service
3094 of different services at the same time. Patch by Eric Norum
3095 <eric.norum@usask.ca> with some help by Ulrich Drepper.
3097 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
3098 family of functions for Linux/S390.
3100 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
3101 of functions for Linux/x86.
3103 * Port to Linux/CRIS contributed by Axis Communications.
3107 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
3108 we can now check for namespace violations and missing declarations. The
3109 result is that almost all headers are now Unix-compliant (as defined in
3110 the upcoming XPG6). The negative side is that some programs might need
3111 corrections, too, if they depend on the incorrect form of the headers in
3112 previous versions which defined too many symbols and included too many
3115 * regex now handles multibyte character sets correctly.
3116 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
3118 * iconv (the program) does now conform to the upcoming XPG6 and handles
3119 charmaps. Instead of the charset names the path of charmaps can be
3120 provided and the conversion happens based on this data.
3121 Contributed by Ulrich Drepper.
3123 * The locale program now provides detailed information about the installed
3128 only lists the names of the supported locales
3132 provides details such as country, language, and codeset name.
3133 Contributed by Ulrich Drepper.
3137 * The gencat program now parses the input file according to the charset
3138 selected by the LC_CTYPE category. This is important for stateful
3139 character sets. To make generating catalogs easier there is a way
3140 to overwrite the charset selected by the locale: before the first
3141 message or $ quote line the catalog can contain a line like
3143 $ codeset=ISO-8859-2
3145 to select the charset (ISO-8859-2 in this case).
3147 Implemented by Shinya Hanataka and Ulrich Drepper.
3149 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
3150 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
3151 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
3153 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
3154 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
3156 * The LANGUAGE environment variable is now ignored unless the locale is
3157 changed from the default "C" locale.
3159 * The usual bug fixes.
3163 * Greg McGary added runtime support for bounds checking using gcc's
3164 new -fbounded-pointers option. ix86 target is complete. PowerPC
3167 * Thorsten Kukuk added secure mode support to nscd.
3169 * The Berkeley db libraries have been removed.
3171 Related, the nss_db module is now in a separate package since it
3172 obviously requires a database library being available.
3174 * Wide character I/O streams implemented by Ulrich Drepper.
3176 * Functions from the extended socket API added by Ulrich Drepper.
3178 * Functions feenableexcept and fedisableexcept to control the
3179 behaviour of individual exceptions have been added by Andreas Jaeger.
3181 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
3183 * The resolver code has been updated from bind 8.2.3-T5B which supports
3184 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
3187 This change could in some situations effect backward compatibility. Since
3188 now `_res' is a thread-local instead of a global variable, modifying it
3189 in one thread does not have any effect in other threads.
3191 The resolver library was also extended to allow IPv6 as the transport
3192 protocol for the requests. This work was done by Stig Venaas.
3194 * Compatibility code for K&R C compilers has been removed from the
3195 header files. A ISO C compiler is needed to use the library
3196 (conforming to either C89 or C99 standard).
3198 * Complete rewrite of the localedef program to support multibyte character
3199 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
3200 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
3201 Implemented by Ulrich Drepper.
3203 Bruno Haible significantly improved the generation and use of the data
3204 structures for the wide character tables.
3206 * Plural handling in gettext implemented by Ulrich Drepper.
3208 * The utmp daemon has been removed.
3210 * The port to MIPS-Linux has been finished by Andreas Jaeger.
3212 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
3215 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
3217 * POSIX barriers implemented by Kaz Kylheku.
3219 * POSIX spawn function family implemented by Ulrich Drepper.
3221 * POSIX spinlocks are now available.
3223 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
3225 * the configure option --enable-kernel=X.Y.Z allows to strip out
3226 compatibility for kernel versions before X.Y.Z. This is currently only
3227 implemented for Linux.
3229 * the sockaddr_in6 structure changed. The IPv6 working group added a new
3230 field sin6_scope_id. This means that all programs using IPv6 should be
3231 recompiled. Don't expect binary compatibility with previous glibc
3234 * various conversion modules for IBM character sets contributed by
3237 * IA-64 port by Jes Sorensen and HJ Lu.
3251 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
3253 * New xdr functions are added; some rpc functions are now 64bit clean.
3255 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
3257 * Fixed known incompatibilities with glibc 2.0.
3259 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
3261 * Optimized a number of functions (especially the ELF dynamic loader).
3263 * Update timezone data files.
3265 * lots of charmaps corrections
3267 * some new locale definitions and charmaps
3272 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
3273 conform to POSIX member type requirements. Symbol versions have been
3274 adjusted as needed within the library, and for direct use by applications,
3275 but there is potential for problems if third-party libraries use
3276 struct timeval as part of their interface. This does not present
3277 a problem for X and other "essential" system libraries.
3279 * An additional locale model to support C++ Standard Library locale
3280 model and probably more was implemented by Ulrich Drepper.
3282 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
3285 * Miles Bader provided the `argp' function family to support hierachical
3286 command line argument parsing, layered on top of getopt.
3288 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
3290 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
3293 * scanf recognizes the %a and %A format for scanning floating point numbers.
3295 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
3296 information and interfaces for the available integer types.
3298 * about 130 new math functions were added to implement the ISO C9x math
3301 * the new header <complex.h> contains definitions of the complex math
3302 functions from ISO C 9X.
3304 * the new header <tgmath.h> defines generic macros to use complex or
3305 real valued functions.
3307 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
3309 * Andreas Jaeger provided a test suite for the math library.
3311 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
3313 * Ulrich Drepper added character set conversion functions (iconv).
3315 * Optimized string functions have been added.
3317 * The localedata addon is now part of glibc.
3319 * An implementation of profiling shared libraries was added by Ulrich Drepper.
3321 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
3322 daemon for NSS (nscd).
3324 Missing a better place here are some numbers on improvements. Under
3325 Linux 2.1.125 un-tar-ing the kernel sources takes
3329 using local files 12.19s 6.88s 22.91s
3331 using NIS 13.92s 8.91s 26.34s
3333 using NIS & nscd 10.37s 7.34s 25.30s
3335 using NIS+ 27.57s 30.37s 640.46s
3337 using NIS+ & nscd 10.25s 7.83s 26.51s
3339 using NIS & old nscd [1] 13.83s 8.32s 29.60s
3341 Keep in mind that non-namelookup related operations dominate above times.
3342 It was just a common complain that using NIS+ unpacking the kernel is
3345 [1] The old nscd implementation is not available anymore since it was
3346 distributed with glibc up to version 2.0.98 and thus is now replaced.
3348 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
3350 * Mark Kettenis provided a Hesiod NSS module.
3352 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
3353 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
3355 * rcmd can now handle netgroups (Dick Streefland).
3357 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
3360 * Support for the IPv6 protocol has been added to the socket API, as per the
3361 latest draft standards.
3363 * Support for Linux 2.2 has been added.
3365 * Interface changes relative to the latest 2.0.x release:
3366 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3367 addseverity NEW: Unix98
3368 alphasort64 NEW: LFS
3369 argp_err_exit_status NEW: argp, GNU ext
3370 argp_error NEW: argp, GNU ext
3371 argp_failure NEW: argp, GNU ext
3372 argp_help NEW: argp, GNU ext
3373 argp_parse NEW: argp, GNU ext
3374 argp_program_bug_address NEW: argp, GNU ext
3375 argp_program_version NEW: argp, GNU ext
3376 argp_program_version_hook NEW: argp, GNU ext
3377 argp_state_help NEW: argp, GNU ext
3378 argp_usage NEW: argp, GNU ext
3379 authdes_create NEW: Secure RPC
3380 authdes_getucred NEW: Secure RPC
3381 authdes_pk_create NEW: Secure RPC
3382 backtrace NEW: GNU ext.
3383 backtrace_symbols NEW: GNU ext.
3384 backtrace_symbols_fd NEW: GNU ext.
3386 cacosf NEW: ISO C 9x
3387 cacosh NEW: ISO C 9x
3388 cacoshf NEW: ISO C 9x
3389 cacoshl NEW: ISO C 9x
3390 cacosl NEW: ISO C 9x
3397 casinf NEW: ISO C 9x
3398 casinh NEW: ISO C 9x
3399 casinhf NEW: ISO C 9x
3400 casinhl NEW: ISO C 9x
3401 casinl NEW: ISO C 9x
3403 catanf NEW: ISO C 9x
3404 catanh NEW: ISO C 9x
3405 catanhf NEW: ISO C 9x
3406 catanhl NEW: ISO C 9x
3407 catanl NEW: ISO C 9x
3408 cbc_crypt NEW: Secure RPC
3412 ccoshf NEW: ISO C 9x
3413 ccoshl NEW: ISO C 9x
3419 cimagf NEW: ISO C 9x
3420 cimagl NEW: ISO C 9x
3421 clearerr_locked REMOVED
3422 clntunix_create NEW: sunrpc ext
3424 clog10 NEW: ISO C 9x
3425 clog10f NEW: ISO C 9x
3426 clog10l NEW: ISO C 9x
3436 cprojf NEW: ISO C 9x
3437 cprojl NEW: ISO C 9x
3439 crealf NEW: ISO C 9x
3440 creall NEW: ISO C 9x
3445 csinhf NEW: ISO C 9x
3446 csinhl NEW: ISO C 9x
3449 csqrtf NEW: ISO C 9x
3450 csqrtl NEW: ISO C 9x
3454 ctanhf NEW: ISO C 9x
3455 ctanhl NEW: ISO C 9x
3457 des_setparity NEW: Secure RPC
3458 ecb_crypt NEW: Secure RPC
3459 endutxent NEW: Unix98
3461 exp10f NEW: ISO C 9x
3462 exp10l NEW: ISO C 9x
3466 fattach NEW: STREAMS
3467 fdetach NEW: STREAMS
3471 feclearexcept NEW: ISO C 9x
3472 fegetenv NEW: ISO C 9x
3473 fegetexceptflag NEW: ISO C 9x
3474 fegetround NEW: ISO C 9x
3475 feholdexcept NEW: ISO C 9x
3477 feraiseexcept NEW: ISO C 9x
3478 ferror_locked REMOVED
3479 fesetenv NEW: ISO C 9x
3480 fesetexceptflag NEW: ISO C 9x
3481 fesetround NEW: ISO C 9x
3482 fetestexcept NEW: ISO C 9x
3483 feupdateenv NEW: ISO C 9x
3484 fflush_locked REMOVED
3488 fgets_unlocked NEW: GNU ext.
3489 fileno_locked REMOVED
3501 fputc_locked REMOVED
3502 fputs_unlocked NEW: GNU ext.
3503 fread_unlocked NEW: GNU ext.
3508 fstatvfs NEW: Unix98
3512 ftruncate64 NEW: LFS
3514 fwrite_unlocked NEW: GNU ext.
3515 gai_strerror NEW: IPv6
3519 getchar_locked REMOVED
3521 getdate_err NEW: Unix98
3522 getdate_r NEW: GNU ext.
3524 getnameinfo NEW: IPv6
3525 getnetname NEW: Secure RPC
3526 getpmsg NEW: STREAMS
3527 getpt NEW: Unix98 PTY
3528 getrlimit64 NEW: LFS
3529 getutxent NEW: Unix98
3530 getutxid NEW: Unix98
3531 getutxline NEW: Unix98
3532 glob64 NEW: GNU ext.
3533 globfree64 NEW: GNU ext.
3534 gnu_get_libc_release NEW: GNU ext.
3535 gnu_get_libc_version NEW: GNU ext.
3536 grantpt NEW: Unix98 PTY
3537 host2netname NEW: Secure RPC
3539 iconv_close NEW: iconv
3540 iconv_open NEW: iconv
3541 if_freenameindex NEW: IPv6
3542 if_indextoname NEW: IPv6
3543 if_nameindex NEW: IPv6
3544 if_nametoindex NEW: IPv6
3545 in6addr_any NEW: IPv6
3546 in6addr_loopback NEW: IPv6
3547 inet6_isipv4mapped NEW: IPv6
3548 isastream NEW: STREAMS
3549 iswblank NEW: GNU ext.
3550 key_decryptsession NEW: Secure RPC
3551 key_decryptsession_pk NEW: Secure RPC
3552 key_encryptsession NEW: Secure RPC
3553 key_encryptsession_pk NEW: Secure RPC
3554 key_gendes NEW: Secure RPC
3555 key_get_conv NEW: Secure RPC
3556 key_secretkey_is_set NEW: Secure RPC
3557 key_setnet NEW: Secure RPC
3558 key_setsecret NEW: Secure RPC
3559 llrint NEW: ISO C 9x
3560 llrintf NEW: ISO C 9x
3561 llrintl NEW: ISO C 9x
3562 llround NEW: ISO C 9x
3563 llroundf NEW: ISO C 9x
3564 llroundl NEW: ISO C 9x
3569 lrintf NEW: ISO C 9x
3570 lrintl NEW: ISO C 9x
3571 lround NEW: ISO C 9x
3572 lroundf NEW: ISO C 9x
3573 lroundl NEW: ISO C 9x
3575 makecontext NEW: Unix98
3576 mempcpy NEW: GNU ext.
3579 modify_ldt NEW: kernel
3583 nearbyint NEW: ISO C 9x
3584 nearbyintf NEW: ISO C 9x
3585 nearbyintl NEW: ISO C 9x
3586 netname2host NEW: Secure RPC
3587 netname2user NEW: Secure RPC
3588 nexttoward NEW: ISO C 9x
3589 nexttowardf NEW: ISO C 9x
3590 nexttowardl NEW: ISO C 9x
3594 passwd2des NEW: Secure RPC
3596 pow10f NEW: GNU ext.
3597 pow10l NEW: GNU ext.
3600 printf_size NEW: GNU ext.
3601 printf_size_info NEW: GNU ext.
3602 profil_counter REMOVED
3603 pthread_mutexattr_getkind_np REPLACED
3604 pthread_mutexattr_setkind_np REPLACED
3605 ptsname NEW: Unix98 PTY
3606 ptsname_r NEW: Unix98 PTY
3608 putchar_locked REMOVED
3609 putgrent NEW: GNU ext.
3611 putpmsg NEW: STREAMS
3612 pututxline NEW: Unix98
3616 readdir64_r NEW: LFS
3617 remquo NEW: ISO C 9x
3618 remquof NEW: ISO C 9x
3619 remquol NEW: ISO C 9x
3621 roundf NEW: ISO C 9x
3622 roundl NEW: ISO C 9x
3624 scalbln NEW: ISO C 9x
3625 scalblnf NEW: ISO C 9x
3626 scalblnl NEW: ISO C 9x
3628 sendfile NEW: kernel
3629 setcontext NEW: Unix98
3630 setrlimit64 NEW: LFS
3631 setutxent NEW: Unix98
3633 sigignore NEW: Unix98
3634 sigqueue NEW: POSIX.1b
3635 sigrelse NEW: Unix98
3636 sigset NEW: POSIX.1b
3637 sigtimedwait NEW: POSIX.1b
3638 sigwaitinfo NEW: POSIX.1b
3639 sincos NEW: GNU ext.
3640 sincosf NEW: GNU ext.
3641 sincosl NEW: GNU ext.
3645 strcasestr NEW: GNU ext.
3646 strtoimax NEW: ISO C 9x
3647 strtoumax NEW: ISO C 9x
3648 strverscmp NEW: GNU ext.
3649 svcauthdes_stats NEW: Secure RPC
3650 svcunix_create NEW: sunrpc etx
3651 svcunixfd_create NEW: sunrpc ext
3652 swapcontext NEW: Unix98
3653 tcgetsid NEW: Unix98 PTY
3654 tdestroy NEW: GNU ext.
3655 tgamma NEW: ISO C 9x
3656 tgammaf NEW: ISO C 9x
3657 tgammal NEW: ISO C 9x
3661 truncf NEW: ISO C 9x
3662 truncl NEW: ISO C 9x
3664 unlockpt NEW: Unix98 PTY
3665 updwtmpx NEW: Unix98
3666 user2netname NEW: Secure RPC
3667 utmpxname NEW: Unix98
3668 versionsort NEW: GNU ext.
3669 versionsort64 NEW: GNU ext.
3671 wcscasecmp NEW: GNU ext.
3672 wcsncasecmp NEW: GNU ext.
3673 wcsnlen NEW: GNU ext.
3674 wcstoimax NEW: ISO C 9x
3675 wcstoll NEW: ISO C 9x
3676 wcstoull NEW: ISO C 9x
3677 wcstoumax NEW: ISO C 9x
3679 wordexp NEW: POSIX.2
3680 wordfree NEW: POSIX.2
3681 write_profiling REMOVED
3682 xdecrypt NEW: Secure RPC
3683 xdr_authdes_cred NEW: Secure RPC
3684 xdr_authdes_verf NEW: Secure RPC
3685 xdr_cryptkeyarg NEW: Secure RPC
3686 xdr_cryptkeyarg2 NEW: Secure RPC
3687 xdr_cryptkeyres NEW: Secure RPC
3688 xdr_getcredres NEW: Secure RPC
3689 xdr_key_netstarg NEW: Secure RPC
3690 xdr_key_netstres NEW: Secure RPC
3691 xdr_keybuf NEW: Secure RPC
3692 xdr_keystatus NEW: Secure RPC
3693 xdr_netnamestr NEW: Secure RPC
3694 xdr_sizeof NEW: Secure RPC
3695 xdr_unixcred NEW: sunrpc ext
3696 xencrypt NEW: Secure RPC
3697 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3708 * inet_ntoa is thread-safe
3710 * updwtmp is moved from libutil to libc
3712 * rewrite of cbrt function
3714 * update of timezone data
3728 * add atoll function
3730 * fix complex problems in Berkeley DB code
3732 * fix math functions
3736 * fixed lots of header problems (especially Linux/GNU specific)
3738 * dynamic loader preserves all registers
3740 * Roland McGrath provided support for handling of auxiliary objects in
3741 the ELF dynamic loader.
3743 * support for parallel builds is improved
3747 * GNU extensions are no longer declared by default. To enable them you
3748 must define the macro `_GNU_SOURCE' in your program or compile with
3751 * The library has changed from using GNU ld symbol aliases to using weak
3752 symbols where available. The ELF object file format supports weak
3753 symbols; GNU ld also supports weak symbols in the a.out format. (There
3754 is also now support for other GNU ld extensions in ELF. Use the
3755 `--with-elf' option to configure to indicate you have ELF, and
3756 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
3757 of many files which contained only symbol aliases, reducing the size of
3758 the source and the compiled library; many other files were renamed to
3759 less cryptic names previously occupied by the symbol alias files.
3760 There is a new header file <elf.h> for programs which operate on
3761 files in the ELF format.
3763 * Converted to Autoconf version 2, so `configure' has more options.
3764 Run `configure --help' to see the details.
3766 * The library can now be configured to build profiling, highly-optimized
3767 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
3768 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
3769 `configure' enable building these extra libraries. The shared library is
3770 built by default when using both ELF and GNU ld. When shared libraries
3771 are enabled, the new library `-ldl' is available for arbitrary run-time
3772 loading of shared objects; its interface is defined in <dlfcn.h>. The
3773 new header file <link.h> gives access to the internals of the run-time
3774 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
3775 application of same name on other systems and it provides information
3776 about dynamically linked binaries.
3778 * The C library now provides the run-time support code for profiling
3779 executables compiled with `-pg'. Programs can control the profiling code
3780 through the interface in <sys/gmon.h>. The `gmon.out' files written by
3781 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
3782 the support for this file format was contributed by David Mosberger-Tang.
3784 * The math code has been replaced with a math library based on fdlibm from
3785 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
3786 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
3787 functions. The math functions now reside in a separate library, so
3788 programs using them will need to use `-lm' their linking commands.
3790 * John C. Bowman contributed optimized ix87 assembler inline functions.
3792 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
3793 mechanism similar to that found in Solaris 2. This is now used for the
3794 group, passwd, hosts, networks, services, protocols, rpc, ethers,
3795 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
3796 file controls what services are used for each individual database. This
3797 works by loading shared libraries with names specified in `nsswitch.conf',
3798 so service modules can be changed or added at any time without even
3799 relinking any program. Currently there are the file, db, and NIS based
3800 NSS services available.
3802 * The new functions `strtoq' and `strtouq' parse integer values from
3803 strings, like `strtol' and `strtoul', but they return `long long int' and
3804 `unsigned long long int' values, respectively (64-bit quantities).
3806 * The new functions `strtof' and `strtold' parse floating-point values from
3807 strings, like `strtod', but they return `float' and `long double' values,
3808 respectively (on some machines `double' and `long double' are the same).
3810 * Ulrich Drepper has contributed new implementations of the floating-point
3811 printing and reading code used in the `printf' family of functions and
3812 `strtod', `strtof', and `strtold'. These new functions are perfectly
3813 accurate, and much faster than the old ones.
3815 * The implementation of the POSIX locale model was completely rewritten by
3816 Ulrich Drepper. This includes the new programs `localedef' and `locale'
3817 to compile the POSIX locale definition.
3819 * The former dummy implementations of the strcoll and strxfrm function are
3820 now replaced by fully functional code contributed by Ulrich Drepper. The
3821 collation information comes from the POSIX locale definitions.
3823 * The new header <langinfo.h> defines an interface for accessing
3824 various locale-dependent data (using the locale chosen with `setlocale').
3826 * Ulrich Drepper has contributed a new suite of functions for operation on
3827 wide-character and multibyte-character strings, in <wchar.h>;
3828 and classification and case conversion of wide characters, in <wctype.h>.
3829 These new functions are conforming to the ISO C, Amendement 1 specification.
3831 * There is now a second implementation of the standard I/O library available.
3832 It comes from GNU libg++ as was written by Per Bothner, heavily modified
3833 by Hongjiu Lu and made thread safe by Ulrich Drepper.
3835 * You can now use positional parameter specifications in format strings
3836 for the `printf' and `scanf' families of functions. For example,
3837 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
3838 ``Number 6, Mr Jones''. This is mainly useful when providing different
3839 format strings for different languages, whose grammars may dictate
3840 different orderings of the values being printed. To support this
3841 feature, the interface for `register_printf_handler' has changed; see
3842 the header file <printf.h> for details.
3844 * The `printf' and `scanf' families of functions now understand a new
3845 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
3846 to group numbers as indicated by the locale; for `scanf' and friends, this
3847 says to accept as valid only a number with all the proper grouping
3848 separators in the right places. In the default "C" locale, numbers are
3849 not grouped; but locales for specific countries will define the usual
3850 conventions (i.e. separate thousands with `,' in the US locale).
3852 * The pgrp functions have been regularized, slightly incompatibly but much
3853 less confusingly. The core functions are now `getpgid' and `setpgid',
3854 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
3855 argument) and BSD `setpgrp' (identical to `setpgid') functions are
3856 provided for compatibility. There is no longer an incompatible `getpgrp'
3857 with an argument declared under _BSD_SOURCE; no BSD code uses it.
3859 * The new header file <fts.h> and suite of functions simplify programs that
3860 operate on directory trees. This code comes from 4.4 BSD.
3862 * The resolver code has been updated from the BIND 4.9.5-P1 release.
3863 Parts of the code were heavily modified by Ulrich Drepper to fit in the
3864 NSS scheme used in glibc.
3866 * There is a new malloc debugging hook `__memalign_hook'.
3868 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
3869 `unsigned int' in <sys/types.h>. These are for compatibility only and
3870 their use is discouraged.
3872 * The `-lmcheck' library to enable standard malloc debugging hooks is now
3873 done differently, so that it works even without GNU ld.
3875 * New function `euidaccess' checks allowed access to a file like `access',
3876 but using the effective IDs instead of the real IDs.
3878 * The time zone data files have been updated for the latest and greatest
3879 local time conventions of the countries of the world.
3881 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
3884 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
3885 for formatting floating-point numbers. They are provided only for
3886 compatibility; new programs should use `sprintf' instead. There are
3887 also equivalent function for the `long double' floating-point type and
3888 all functions also exist in a reentrant form.
3890 * The new auxiliary library `-lutil' from 4.4 BSD contains various
3891 functions for maintaining the login-record files (primarily of use to
3892 system programs such as `login'), and convenient functions for
3893 allocating and initializing a pseudo-terminal (pty) device.
3895 * Ulrich Drepper has contributed new support for System V style
3896 shared memory and IPC on systems that support it.
3898 * Ulrich Drepper has contributed several miscellaneous new functions found
3899 in System V: The `hsearch' family of functions provide an effective
3900 implementation of hash tables; `a64l' and `l64a' provide a very simple
3901 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
3904 * Ulrich Drepper has contributed new reentrant counterparts for the
3905 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
3907 * Ulrich Drepper has contributed new, highly-optimized versions of several
3908 string functions for the i486/Pentium family of processors.
3910 * Ulrich Drepper has updated the Linux-specific code, based largely
3911 on work done in Hongjiu Lu's version of GNU libc for Linux.
3912 The GNU library now supports Linux versions 2.0.10 and later,
3913 using the ELF object file format (i[3456]86-*-linux).
3915 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
3917 * David Mosberger-Tang and Richard Henderson have ported the C library
3918 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
3919 dynamic linking support for ELF/Alpha.
3921 * Richard Henderson contributed several Alpha optimized assembler function
3922 for arithmetic and string handling.
3924 * Ulrich Drepper has contributed a new set of message catalog functions to
3925 support multiple languages using the <libintl.h> interface, for use with
3926 his new package GNU gettext. Translation volunteers have contributed
3927 catalogs of the library's messages in Spanish, German, and Korean.
3929 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
3930 program and the `catgets' function for reading the catalog files it
3931 creates. (The <libintl.h> interface is preferred; we include the
3932 <nl_types.h> interface using `catgets' only for source compatibility with
3933 programs already written to use it.)
3935 * New header file <values.h> gives SVID-compatible names for <limits.h>
3938 * Various new macros, declarations, and small header files for compatibility
3941 * New function `group_member' is a convenient way to check if a process has
3942 a given effective group ID.
3944 * When using GCC 2.7 and later, the socket functions are now declared in a
3945 special way so that passing an argument of type `struct sockaddr_in *',
3946 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
3947 `struct sockaddr *' type, does not generate a type-clash warning.
3949 * New function `error' declared in header file <error.h> is a convenient
3950 function for printing error messages and optionally exiting; this is the
3951 canonical function used in GNU programs. The new functions `err', `warn',
3952 and friends in header file <err.h> are the canonical 4.4 BSD interface for
3953 doing the same thing.
3955 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
3956 POSIX.2 `glob' function to do ~ and {...} expansion.
3958 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
3959 `clearenv' which is used in POSIX.9 is also available.
3961 * New function `getsid' returns session ID number on systems that support it.
3963 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
3964 files <db.h> and <mpool.h> provide a rich set of functions for several
3965 types of simple databases stored in memory and in files, and <ndbm.h> is
3966 an old `ndbm'-compatible interface using the `db' functions. Link with
3967 `-ldb' to get these functions.
3969 * New macro `strdupa' copies a string like `strdup', but uses local stack
3970 space from `alloca' instead of dynamic heap space from `malloc'.
3972 * New function `strnlen' is like `strlen' but searches only a given maximum
3973 number of characters for the null terminator. `stpncpy', `strndup' and
3974 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
3977 * New function `statfs' in header <sys/statfs.h>.
3979 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
3980 provide convenient functions for operating on blocks of null-terminated
3983 * A new suite of functions in <utmp.h> handle all the details of reading
3984 and writing the utmp file.
3986 * An implementation of the NIS/YP(tm) based NSS service was contributed by
3989 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
3990 completely POSIX compliant and also implemented the extended functionality
3991 to handle alternate digit representation and alternate era date formats.
3993 * Ulrich Drepper provided an implementation of the `strptime' function
3994 defined in XPG4.2 which transforms a string into a `struct tm' value.
3996 * Paul Eggert provided the tzselect shell script as part of the timezone
3997 code. The shell script makes it easy to select the correct timezone
4000 * The implementation of the malloc family of functions is completely replaced
4001 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
4002 The implementation uses the mmap function (if available) and it is
4003 optimized for the use in multi threaded programs.
4005 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
4006 functions. This new functionality is usable by specifying a special
4007 salt string and it is compatible with implementation on *BSD systems.
4009 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
4010 `getsubopt' to handle second level command line options, `bsd_signal'
4011 to access BSD style `signal' functionality, the obsolete `regexp' style
4014 * the `lchown' function is available on system which support this
4017 * The implementation of the shadow password handling function was contributed
4020 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
4022 * POSIX.1g support was added. The <sys/select.h> header is available,
4023 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
4024 implementation of `getaddrinfo'.
4028 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
4030 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
4031 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
4033 * The new function `daemon' from 4.4 BSD is useful for server programs that
4034 want to put themselves in the background.
4036 * Joel Sherrill has contributed support for several standalone boards that
4037 run without an operating system.
4039 * `printf', `scanf' and friends now accept a `q' type modifier for long
4040 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
4042 * All of the code taken from BSD (notably most of the math and networking
4043 routines) has been updated from the BSD 4.4-Lite release.
4045 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
4047 * The new functions `getdomainname' and `setdomainname' fetch or change the
4048 YP/NIS domain name. These are system calls which exist on systems which
4051 * The time zone data files have been updated for the latest international
4054 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
4055 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
4059 * The C library now includes support for Sun RPC, from Sun's free
4060 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
4061 are included. (There is still no support for YP.)
4063 * Tom Quinn has contributed a port of the C library to SGI machines running
4064 Irix 4 (mips-sgi-irix4).
4066 * The new `lockf' function is a simplified interface to the locking
4067 facilities of `fcntl', included for compatibility.
4069 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
4071 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
4073 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
4076 * The error message printed by `assert' for a failed assertion now includes
4077 the name of the program (if using GNU ld) and the name of the calling
4078 function (with versions of GCC that support this).
4080 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
4082 * The library now includes the <sys/mman.h> header file and memory
4083 management functions `mmap', `munmap', `mprotect', `msync', and
4084 `madvise', on systems that support those facilities.
4086 * The interface for `mcheck' has changed slightly: the function called to
4087 abort the program when an allocation inconsistency is detected now takes
4088 an argument that indicates the type of failure. The new function
4089 `mprobe' lets you request a consistency check for a particular block at
4090 any time (checks are normally done only when you call `free' or `realloc'
4093 * It is now possible to easily cross-compile the C library, building on one
4094 system a library to run on another machine and/or operating system. All
4095 you need to do is set the variable `HOST_CC' in `configparms' to the
4096 native compiler for programs to run on the machine you are building on (a
4097 few generator programs are used on Unix systems); set `CC' to the
4100 * The new function `fexecve' (only implemented on the GNU system) executes
4101 a program file given a file descriptor already open on the file.
4105 * Brendan Kehoe has contributed most of a port to the DEC Alpha
4106 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
4108 * You can set the variable `libprefix' in `configparms' to specify a prefix
4109 to be prepended to installed library files; this makes it easy to install
4110 the GNU C library to be linked as `-lgnuc' or whatever.
4112 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
4113 copies a limited number of characters from a string, and returns the
4114 address of the last character written.
4116 * You no longer need to check for whether the installed `stddef.h' is
4117 compatible with the GNU C library. configure now checks for you.
4119 * You can now define a per-stream `fileno' function to convert the
4120 stream's cookie into an integral file descriptor.
4122 * ``malloc (0)'' no longer returns a null pointer. Instead, it
4123 allocates zero bytes of storage, and returns a unique pointer which
4124 you can pass to `realloc' or `free'. The behavior is undefined if
4125 you dereference this pointer.
4127 * The C library now runs on Sony NEWS m68k machines running either
4128 NewsOS 3 or NewsOS 4.
4130 * The new `syscall' function is a system-dependent primitive function
4131 for invoking system calls. It has the canonical behavior on Unix
4132 systems, including unreliable return values for some calls (such as
4133 `pipe', `fork' and `getppid').
4135 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
4136 to `EAGAIN', which is the preferred name. On systems whose kernels
4137 use two distinct codes, the C library now translates EWOULDBLOCK to
4138 EAGAIN in every system call function.
4142 * The GNU C Library Reference Manual is now distributed with the library.
4143 `make dvi' will produce a DVI file of the printed manual.
4144 `make info' will produce Info files that you can read on line using C-h i
4145 in Emacs or the `info' program.
4146 Please send comments on the manual to bug-glibc-manual@gnu.org.
4148 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
4150 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
4152 * Jason Merrill has contributed a port to the Sequent Symmetry running
4153 Dynix version 3 (i386-sequent-dynix).
4155 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
4156 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
4158 * New function `memory_warnings' lets you arrange to get warnings when
4159 malloc is running out of memory to allocate, like Emacs gives you.
4161 * The C library now contains the relocating allocator used in Emacs 19 for
4162 its editing buffers. This allocator (ralloc) minimizes allocation
4163 overhead and fragmentation by moving allocated regions around whenever it
4164 needs to. You always refer to a ralloc'd region with a "handle" (a
4165 pointer to a pointer--an object of type `void **').
4167 * There is a new `printf' format: `%m' gives you the string corresponding
4168 to the error code in `errno'.
4170 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
4171 or `%[' conversion, but instead of filling in a fixed-sized buffer you
4172 pass, the `a' modifier says to fill in a `char **' you pass with a
4175 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
4176 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
4177 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
4179 * `mkstemp' is a traditional Unix function to atomically create and open a
4180 uniquely-named temporary file.
4184 * The standard location for the file that says what the local timezone is
4185 has changed again. It is now `/usr/local/etc/localtime' (or more
4186 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
4188 * The distribution no longer contains any files with names longer than 14
4191 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
4192 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
4194 * New functions `ttyslot' and `syslog' from 4.4 BSD.
4198 * The configuration process has changed quite a bit. The `configure'
4199 script is now used just like the configuration scripts for other GNU
4200 packages. The `sysdeps' directory hierarchy is much rearranged.
4201 The file `INSTALL' explains the new scheme in detail.
4203 * The header files no longer need to be processed into ANSI C and
4204 traditional C versions. There is just one set of files to install, and
4205 it will work with ANSI or old C compilers (including `gcc -traditional').
4207 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
4208 MIPS DECStation running Ultrix 4.
4210 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
4211 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
4212 made itself into a shared library.
4214 * Yet further improved support for the i386, running 4.3 BSD-like systems
4215 (such as Mach 3 with the Unix single-server), or System V.
4217 * New function `strncasecmp' to do case-insensitive string comparison
4218 with limited length.
4220 * New function `strsep' is a reentrant alternative to `strtok'.
4222 * New functions `scandir' and `alphasort' for searching directories.
4224 * New function `setenv' is a better interface to `putenv'.
4226 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
4227 function for traversing a directory tree.
4229 * The GNU obstack package is now also part of the C library.
4230 The new function `open_obstack_stream' creates a stdio stream that
4231 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
4232 formatted output directly to an obstack.
4234 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
4235 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
4237 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
4239 * The new functions `strfry' and `memfrob' do mysterious and wonderful
4240 things to your strings.
4242 * There are some new test programs: test-fseek, testmb, and testrand.
4244 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
4245 These ports are not finished, but are a good starting place for really
4246 supporting those systems.
4248 * `/etc/localtime' is now the standard location for the file that says what
4249 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
4250 This follows the general principle that `/etc' is the place for all local
4251 configuration files.
4253 * The C library header files now use `extern "C"' when used by the C++
4254 compiler, so the C library should now work with C++ code.
4256 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
4257 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
4260 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
4261 function which uses the `merge sort' algorithm, and is said to be
4262 significantly faster than the old GNU `qsort' function. Merge sort is
4263 now the standard `qsort' function. The new algorithm can require a lot
4264 of temporary storage; so, the old sorting function is called when the
4265 required storage is not available.
4267 * The C library now includes Michael Glad's Ultra Fast Crypt, which
4268 provides the Unix `crypt' function, plus some other entry points.
4270 * The code and header files taken from 4.4 BSD have been updated with the
4271 latest files released from Berkeley.
4273 ----------------------------------------------------------------------
4274 Copyright information:
4276 Copyright (C) 1992-2017 Free Software Foundation, Inc.
4278 Permission is granted to anyone to make or distribute verbatim copies
4279 of this document as received, in any medium, provided that the
4280 copyright notice and this permission notice are preserved,
4281 thus giving the recipient permission to redistribute in turn.
4283 Permission is granted to distribute modified versions
4284 of this document, or of portions of it,
4285 under the above conditions, provided also that they
4286 carry prominent notices stating who last changed them.
4289 version-control: never