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 and tan
13 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 and powf.
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 _Float64 and _Float32x
45 types, as defined by ISO/IEC TS 18661-3:2015. These are corresponding
46 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 The following bugs are resolved with this release:
117 [The release manager will add the list generated by
118 scripts/list-fixed-bugs.py just before the release.]
125 * A per-thread cache has been added to malloc. Access to the cache requires
126 no locks and therefore significantly accelerates the fast path to allocate
127 and free small amounts of memory. Refilling an empty cache requires locking
128 the underlying arena. Performance measurements show significant gains in a
129 wide variety of user workloads. Workloads were captured using a special
130 instrumented malloc and analyzed with a malloc simulator. Contributed by
131 DJ Delorie with the help of Florian Weimer, and Carlos O'Donell.
133 * Unicode 10.0.0 Support: Character encoding, character type info, and
134 transliteration tables are all updated to Unicode 10.0.0, using
135 generator scripts contributed by Mike FABIAN (Red Hat).
136 These updates cause user visible changes, especially the changes in
137 wcwidth for many emoji characters cause problems when emoji sequences
138 are rendered with pango, see for example:
139 https://bugzilla.gnome.org/show_bug.cgi?id=780669#c5
141 * Collation of Hungarian has been overhauled and is now consistent with "The
142 Rules of Hungarian Orthography, 12th edition" (Bug 18934). Contributed by
145 * Improvements to the DNS stub resolver, contributed by Florian Weimer:
147 - The GNU C Library will now detect when /etc/resolv.conf has been
148 modified and reload the changed configuration. The new resolver option
149 “no-reload” (RES_NORELOAD) disables this behavior.
151 - The GNU C Library now supports an arbitrary number of search domains
152 (configured using the “search” directive in /etc/resolv.conf);
153 previously, there was a hard limit of six domains. For backward
154 compatibility, applications that directly modify the ‘_res’ global
155 object are still limited to six search domains.
157 - When the “rotate” (RES_ROTATE) resolver option is active, the GNU C
158 Library will now randomly pick a name server from the configuration as a
159 starting point. (Previously, the second name server was always used.)
161 * The tunables feature is now enabled by default. This allows users to tweak
162 behavior of the GNU C Library using the GLIBC_TUNABLES environment variable.
164 * New function reallocarray, which resizes an allocated block (like realloc)
165 to the product of two sizes, with a guaranteed clean failure upon integer
166 overflow in the multiplication. Originally from OpenBSD, contributed by
167 Dennis Wölfing and Rüdiger Sonderfeld.
169 * New wrappers for the Linux-specific system calls preadv2 and pwritev2.
170 These are extended versions of preadv and pwritev, respectively, taking an
171 additional flags argument. The set of supported flags depends on the
172 running kernel; full support currently requires kernel 4.7 or later.
174 * posix_spawnattr_setflags now supports the flag POSIX_SPAWN_SETSID, to
175 create a new session ID for the spawned process. This feature is
176 scheduled to be added to the next major revision of POSIX; for the time
177 being, it is available under _GNU_SOURCE.
179 * errno.h is now safe to use from C-preprocessed assembly language on all
180 supported operating systems. In this context, it will only define the
181 Exxxx constants, as preprocessor macros expanding to integer literals.
183 * On ia64, powerpc64le, x86-32, and x86-64, the math library now implements
184 128-bit floating point as defined by ISO/IEC/IEEE 60559:2011 (IEEE
185 754-2008) and ISO/IEC TS 18661-3:2015. Contributed by Paul E. Murphy,
186 Gabriel F. T. Gomes, Tulio Magno Quites Machado Filho, and Joseph Myers.
188 To compile programs that use this feature, the compiler must support
189 128-bit floating point with the type name _Float128 (as defined by TS
190 18661-3) or __float128 (the nonstandard name used by GCC for C++, and for
191 C prior to version 7). _GNU_SOURCE or __STDC_WANT_IEC_60559_TYPES_EXT__
192 must be defined to make the new interfaces visible.
194 The new functions and macros correspond to those present for other
195 floating-point types (except for a few obsolescent interfaces not
196 supported for the new type), with F128 or f128 suffixes; for example,
197 strtof128, HUGE_VAL_F128 and cosf128. Following TS 18661-3, there are no
198 printf or scanf formats for the new type; the strfromf128 and strtof128
199 interfaces should be used instead.
201 Deprecated and removed features, and other changes affecting compatibility:
203 * The synchronization that pthread_spin_unlock performs has been changed to
204 now be equivalent to a C11 atomic store with release memory order to the
205 spin lock's memory location. Previously, several (but not all)
206 architectures used stronger synchronization (e.g., containing what is
207 often called a full barrier). This change can improve performance, but
208 may affect odd fringe uses of spin locks that depend on the previous
209 behavior (e.g., using spin locks as atomic variables to try to implement
210 Dekker's mutual exclusion algorithm).
212 * The port to Native Client running on ARMv7-A (--host=arm-nacl) has been
215 * Sun RPC is deprecated. The rpcgen program, librpcsvc, and Sun RPC headers
216 will only be built and installed when the GNU C Library is configured with
217 --enable-obsolete-rpc. This allows alternative RPC implementations, such
218 as TIRPC or rpcsvc-proto, to be used.
220 * The NIS(+) name service modules, libnss_nis, libnss_nisplus, and
221 libnss_compat, are deprecated, and will not be built or installed by
224 The NIS(+) support library, libnsl, is also deprecated. By default, a
225 compatibility shared library will be built and installed, but not headers
226 or development libraries. Only a few NIS-related programs require this
227 library. (In particular, the GNU C Library has never required programs
228 that use 'gethostbyname' to be linked with libnsl.)
230 Replacement implementations based on TIRPC, which additionally support
231 IPv6, are available from <https://github.com/thkukuk/>. The configure
232 option --enable-obsolete-nsl will cause libnsl's headers, and the NIS(+)
233 name service modules, to be built and installed.
235 * The DNS stub resolver no longer performs EDNS fallback. If EDNS or DNSSEC
236 support is enabled, the configured recursive resolver must support EDNS.
237 (Responding to EDNS-enabled queries with responses which are not
238 EDNS-enabled is fine, but FORMERR responses are not.)
240 * res_mkquery and res_nmkquery no longer support the IQUERY opcode. DNS
241 servers have not supported this opcode for a long time.
243 * The _res_opcodes variable has been removed from libresolv. It had been
244 exported by accident.
246 * <string.h> no longer includes inline versions of any string functions,
247 as this kind of optimization is better done by the compiler. The macros
248 __USE_STRING_INLINES and __NO_STRING_INLINES no longer have any effect.
250 * The nonstandard header <xlocale.h> has been removed. Most programs should
251 use <locale.h> instead. If you have a specific need for the definition of
252 locale_t with no other declarations, please contact
253 libc-alpha@sourceware.org and explain.
255 * The obsolete header <sys/ultrasound.h> has been removed.
257 * The obsolete signal constant SIGUNUSED is no longer defined by <signal.h>.
259 * The obsolete function cfree has been removed. Applications should use
262 * The stack_t type no longer has the name struct sigaltstack. This changes
263 the C++ name mangling for interfaces involving this type.
265 * The ucontext_t type no longer has the name struct ucontext. This changes
266 the C++ name mangling for interfaces involving this type.
268 * On M68k GNU/Linux and MIPS GNU/Linux, the fpregset_t type no longer has
269 the name struct fpregset. On Nios II GNU/Linux, the mcontext_t type no
270 longer has the name struct mcontext. On SPARC GNU/Linux, the struct
271 mc_fq, struct rwindow, struct fpq and struct fq types are no longer
272 defined in sys/ucontext.h, the mc_fpu_t type no longer has the name struct
273 mc_fpu, the gwindows_t type no longer has the name struct gwindows and the
274 fpregset_t type no longer has the name struct fpu. This changes the C++
275 name mangling for interfaces involving those types.
277 * On S/390 GNU/Linux, the constants defined by <sys/ptrace.h> have been
278 synced with the kernel:
280 - PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS
281 are not supported on this architecture and have been removed.
283 - PTRACE_SINGLEBLOCK, PTRACE_SECCOMP_GET_FILTER, PTRACE_PEEKUSR_AREA,
284 PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE,
285 PTRACE_DISABLE_TE and PTRACE_TE_ABORT_RAND have been added.
287 Programs that assume the GET/SETREGS ptrace requests are universally
288 available will now fail to build, instead of malfunctioning at runtime.
290 Changes to build and runtime requirements:
292 * Linux kernel 3.2 or later is required at runtime, on all architectures
293 supported by that kernel. (This is a change from version 2.25 only for
296 * GNU Binutils 2.25 or later is now required to build the GNU C Library.
298 * On most architectures, GCC 4.9 or later is required to build the GNU C
299 Library. On powerpc64le, GCC 6.2 or later is required.
301 Older GCC versions and non-GNU compilers are still supported when
302 compiling programs that use the GNU C Library. (We do not know exactly
303 how old, and some GNU extensions to C may be _de facto_ required. If you
304 are interested in helping us make this statement less vague, please
305 contact libc-alpha@sourceware.org.)
307 Security related changes:
309 * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
310 to avoid fragmentation-based spoofing attacks (CVE-2017-12132).
312 * LD_LIBRARY_PATH is now ignored in binaries running in privileged AT_SECURE
313 mode to guard against local privilege escalation attacks (CVE-2017-1000366).
315 * Avoid printing a backtrace from the __stack_chk_fail function since it is
316 called on a corrupt stack and a backtrace is unreliable on a corrupt stack
319 * A use-after-free vulnerability in clntudp_call in the Sun RPC system has been
320 fixed (CVE-2017-12133).
322 The following bugs are resolved with this release:
324 [984] network: Respond to changed resolv.conf in gethostbyname
325 [5010] network: sunrpc service cleanup causes unwanted port mapper traffic
326 [12068] localedata: sc_IT: misspelled yesexpr/day/abday/mon/abmon/date_fmt
328 [12189] libc: __stack_chk_fail should not attempt a backtrace
330 [14096] time: Race condition on timezone/tst-timezone.out
331 [14172] localedata: az_IR: new locale
332 [14995] build: glibc fails to build if gold is the default linker, even if
334 [15998] build: [powerpc] Set arch_minimum_kernel for powerpc LE
335 [16637] network: inet_pton function is accepting IPv6 with bad format
336 [16640] string: string/strtok.c: undefined behaviour inconsistent between
337 x86 and other generic code
338 [16875] localedata: ko_KR: fix lang_name
339 [17225] localedata: ar_SY: localized month names for May and June are
341 [17297] localedata: da_DK: wrong date_fmt string
342 [18907] stdio: Incorrect order of __wur __THROW in <printf.h>
343 [18934] localedata: hu_HU: collate: fix multiple bugs and add tests
344 [18988] nptl: pthread wastes memory with mlockall(MCL_FUTURE)
345 [19066] localedata: ar_SA abbreviated day and month names are in English
346 [19569] network: resolv: Support an arbitrary number of search domains
347 [19570] network: Implement random DNS server selection in the stub
349 [19838] locale: localedef fails on PA-RISC
350 [19919] localedata: iso14651_t1_common: Correct the Malayalam sorting
351 order of 0D36 and 0D37
352 [19922] localedata: iso14651_t1_common: Define collation for Malayalam
354 [20098] libc: FAIL: debug/backtrace-tst on hppa
355 [20257] network: sunrpc: clntudp_call does not enforce timeout when
357 [20275] localedata: locale day/abday/mon/abmon should not have trailing
359 [20313] localedata: Update locale data to Unicode 9.0
360 [20424] manual: Document how to provide a malloc replacement
361 [20496] localedata: agr_PE: new language locale Awajún / Aguaruna (agr)
363 [20686] locale: Add el_GR@euro to SUPPORTED.
364 [20831] dynamic-link: _dl_map_segments does not test for __mprotect
365 failures consistently
366 [21015] dynamic-link: Document and fix --enable-bind-now
367 [21016] nptl: pthread_cond support is broken on hppa
368 [21029] libc: glibc-2.23 (and later) fails to compile with -fno-omit-
369 frame-pointer on i386
370 [21049] libc: segfault in longjmp_chk() due to clobbered processor
372 [21075] libc: unused assigment to %g4 in sparc/sparc{64,32}/clone.S
373 [21088] libc: Build fails with --enable-static-nss
374 [21094] math: cosf(1.57079697) has 3 ulp error on targets where the
375 generic c code is used
376 [21109] libc: Tunables broken on big-endian
377 [21112] math: powf has large ulp errors with base close to 1 and exponent
379 [21115] network: sunrpc: Use-after-free in error path in clntudp_call
381 [21120] malloc: glibc malloc is incompatible with GCC 7
382 [21130] math: Incorrect return from y0l (-inf) and y1l (-inf) when linking
384 [21134] math: Exception (divide by zero) not set for y0/y1 (0.0) and y0/y1
385 (-0.0) when linking with -lieee
386 [21171] math: log10, log2 and lgamma return incorrect results
387 [21179] libc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs
388 [21182] libc: __memchr_sse2: regression in glibc-2.25 on i686
389 [21207] localedata: ce_RU: update weekdays from CLDR
390 [21209] dynamic-link: LD_HWCAP_MASK read in setuid binaries
391 [21217] localedata: Update months from CLDR-31
392 [21232] libc: miss posix_fadvise64 on MIPS64 when static linking
393 [21243] libc: support_delete_temp_file should issue warning for failed
395 [21244] libc: support resolv_test_start() socket fd close should be
397 [21253] libc: localedef randomly segfaults when using -fstack-check due to
398 new posix_spawn implementation
399 [21258] dynamic-link: Branch predication in _dl_runtime_resolve_avx512_opt
400 leads to lower CPU frequency
401 [21259] libc: [alpha] termios.h missing IXANY for POSIX
402 [21261] libc: [sparc64] bits/setjmp.h namespace
403 [21267] network: [mips] bits/socket.h IOC* namespace
404 [21268] libc: [alpha] termios.h NL2, NL3 namespace
405 [21270] libc: mmap64 silently truncates large offset values
406 [21275] libc: posix_spawn always crashes on ia64 now
407 [21277] libc: [alpha] termios.h missing IUCLC for UNIX98 and older
408 [21280] math: [powerpc] logbl for POWER7 return incorrect results
409 [21289] libc: Incorrect declaration for 32-bit platforms with
410 _FILE_OFFSET_BITS=64 causes build error
411 [21295] network: GETAI(AF_UNSPEC) drops IPv6 addresses if nss module does
412 not support gethostbyname4_r
413 [21298] nptl: rwlock can deadlock on frequent reader/writer phase
415 [21338] malloc: mallopt M_ARENA_MAX doesn't set the maximum number of
417 [21340] libc: Support POSIX_SPAWN_SETSID
418 [21357] libc: unwind-dw2-fde deadlock when using AddressSanitizer
419 [21359] network: ns_name_pack needs additional byte in destination buffer
420 [21361] network: resolv: Reduce advertised EDNS0 buffer size to guard
421 against fragmentation attacks (CVE-2017-12132)
422 [21369] network: resolv: Remove EDNS fallback
423 [21371] libc: Missing timespec definition when compiled with _XOPEN_SOURCE
425 [21386] nptl: Assertion in fork for distinct parent PID is incorrect
426 [21391] dynamic-link: x86: Set dl_platform and dl_hwcap from CPU features
427 [21393] stdio: Missing dup3 error check in freopen, freopen64
428 [21396] libc: Use AVX2 memcpy/memset on Skylake server
429 [21399] localedata: Bad description for U00EC in
430 localedata/charmaps/CP1254
431 [21411] malloc: realloc documentation error
432 [21426] network: sys/socket.h uio.h namespace
433 [21428] libc: [aarch64] tst-backtrace5 testsuite failure
434 [21445] libc: signal.h bsd_signal namespace
435 [21455] network: Network headers stdint.h namespace
436 [21474] network: resolv: res_init does not use RES_DFLRETRY (2) but 4 for
438 [21475] network: resolv: Overlong search path is truncated mid-label
439 [21511] libc: sigstack namespace
440 [21512] libc: clone() ends up calling exit_group() through _exit() wrapper
441 [21514] libc: sysdeps/unix/sysv/linux/sys/syscall.h:31:27: fatal error:
442 bits/syscall.h: No such file or directory
443 [21517] libc: struct sigaltstack namespace
444 [21528] dynamic-link: Duplicated minimal strtoul implementations in ld.so
445 [21533] localedata: Update locale data to Unicode 10.0
447 ../sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:44: Error:
448 junk at end of line, first unrecognized character is `@'
449 [21538] libc: SIG_HOLD missing for XPG4
450 [21539] libc: S390: Mismatch between kernel and glibc ptrace.h with
451 request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.
452 [21542] libc: Use conservative default for sysconf (_SC_NPROCESSORS_ONLN)
453 [21543] libc: sigevent namespace
454 [21548] libc: [mips] get/set/make/swap context for MIPS O32 assume wrong
455 size for general purpose registers in mcontext_t structure
456 [21550] libc: sigwait namespace
457 [21552] libc: XPG4 bsd_signal namespace
458 [21554] libc: sigpause namespace
459 [21560] libc: sys/wait.h signal.h namespace
460 [21561] libc: waitid namespace
461 [21573] nptl: GCC 7: /usr/bin/install: cannot remove
462 '/usr/include/stdlib.h': Permission denied
463 [21575] libc: sys/wait.h missing struct rusage definition
464 [21584] libc: sigaltstack etc namespace
465 [21597] libc: siginterrupt namespace
466 [21607] math: hppa: FAIL: math/test-tgmath
467 [21609] dynamic-link: Incomplete workaround for GCC __tls_get_addr ABI
469 [21622] libc: [tile] missing SA_* for POSIX.1:2008
470 [21624] dynamic-link: ld.so: Unsafe alloca allows local attackers to alias
471 stack and heap (CVE-2017-1000366)
472 [21625] libc: wait3 namespace
473 [21654] nss: Incorrect pointer alignment in NSS group merge result
475 [21657] network: Parse interface zone id for node-local multicast
476 [21662] string: memcmp-avx2-movbe.S lacks saturating subtraction for
478 [21666] libc: .symver is used on common symbol
479 [21668] network: resolv: res_init cross-thread broadcast introduces race
481 [21687] math: tgmath.h totalorder, totalordermag return type
482 [21694] locale: Current Glibc Locale Does Not Support Tok-Pisin and Fiji
484 [21696] libc: Incorrect assumption of of __cpu_mask in
485 posix/sched_cpucount.c
486 [21697] libc: sysdeps/posix/spawni.c: 2 * suspicious condition ?
487 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
489 [21707] math: ppc64le: Invalid IFUNC resolver from libgcc calls getauxval,
490 leading to relocation crash
491 [21709] libc: resolv_conf.c:552: update_from_conf: Assertion
492 `resolv_conf_matches (resp, conf)' failed.
493 [21710] localedata: Added Samoan language locale for Samoa
494 [21711] localedata: Pashto yesstr/nostr locale are missing
495 [21715] nptl: sysdeps/nptl/bits/pthreadtypes.h: typedef guard
496 __have_pthread_attr_t can cause redefinition of typedef ‘pthread_attr_t’
497 [21721] localedata: Incorrect Full Weekday names for ks_IN@devanagari
498 [21723] localedata: yesstr/nostr missing for Chinese language locale
499 [21724] localedata: yesstr and nostr are missing for Xhosa [LC_MESSAGES]
501 [21727] localedata: yesstr and nostr are missing for Tsonga [LC_MESSAGES]
503 [21728] localedata: New Locale for Tongan language
504 [21729] localedata: incorrect LC_NAME fields for hi_IN
505 [21733] localedata: yesstr and nostr are missing for zh_HK
506 [21734] localedata: Missing yesstr and nostr are for kw_GB
507 [21738] libc: misc/tst-preadvwritev2 and misc/tst-preadvwritev64v2 fail
508 [21741] libc: Undefined __memmove_chk_XXX and __memset_chk_XXX in libc.a
509 [21742] libc: _dl_num_cache_relocations is undefined in libc.a
510 [21743] localedata: ks_IN@devanagari: abday strings mismatch the day
512 [21744] libc: Tests failing on --enable-tunables --enable-stack-
514 [21749] localedata: Wrong abbreviated day name (“abday”) for
516 [21756] localedata: missing yesstr, nostr for nds_DE and nds_NL
517 [21757] localedata: missing yesstr, nostr for pap_AW and pap_CW
518 [21759] localedata: missing yesstr and nostr for Tigrinya
519 [21760] localedata: Fix LC_MESSAGES and LC_ADDRESS for anp_IN
520 [21766] localedata: Wrong LC_MESSAGES for om_ET Locale
521 [21767] localedata: Missing Bislama locales
522 [21768] localedata: Missing yesstr and nostr for aa_ET
523 [21770] localedata: Missing Field in li_NL
524 [21778] nptl: Robust mutex may deadlock
525 [21779] libc: MicroBlaze segfaults when loading libpthread
526 [21783] localedata: Fix int_select international_call_prefixes
527 [21784] localedata: Inconsistency in country_isbn
528 [21788] localedata: Missing Country Postal Abbreviations
529 [21794] localedata: Added-country_isbn-for-Italy
530 [21795] localedata: Add/Fix country_isbn for France
531 [21796] localedata: Added country_isbn for Republic of Korea
532 [21797] localedata: Fix inconsistency in country_isbn and missing prefixes
533 [21799] localedata: Added int_select international_call_prefixes
534 [21801] localedata: Added int_select international_call_prefixes
535 [21804] nptl: Double semicolon in thread-shared-types.h
536 [21807] localedata: LC_ADDRESS fix for pap_CW
537 [21808] localedata: Fix LC_ADDRESS for pap_AW
538 [21821] localedata: Added country_name in mai_IN
539 [21822] localedata: Fix LC_TIME for mai_IN
540 [21823] localedata: missing yesstr, nostr for sa_IN
541 [21825] localedata: Fix name_mrs for mag_IN
542 [21828] localedata: 2.26 changelog should mention user visible changes
544 [21835] localedata: Added Maithili language locale for Nepal
545 [21838] localedata: Removed redundant data for the_NP
546 [21839] localedata: Fix LC_MONETARY for ta_LK
547 [21844] localedata: Fix Latin characters and Months Sequence.
548 [21848] localedata: Fix mai_NP Title Name
553 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
554 24731-2:2010, is supported to enable declarations of functions from that
555 TR. Note that not all functions from that TR are supported by the GNU C
558 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
559 18661-1:2014, is supported to enable declarations of functions and macros
560 from that TS. Note that not all features from that TS are supported by
563 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
564 18661-4:2015, is supported to enable declarations of functions and macros
565 from that TS. Note that most features from that TS are not supported by
568 * The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
569 now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
570 Since the GNU C Library defaults to a much newer revision of POSIX, this
571 will only affect programs that specifically request an old conformance
572 mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
573 see a change in the visible declarations, but a program compiled with
574 just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
577 Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
578 defined by all multithreaded code, but glibc has not required this for
581 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
582 means that in a future release, the macros “major”, “minor”, and “makedev”
583 will only be available from <sys/sysmacros.h>.
585 These macros are not part of POSIX nor XSI, and their names frequently
586 collide with user code; see for instance glibc bug 19239 and Red Hat bug
587 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
588 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
591 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
592 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
593 femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
595 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
596 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
597 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
598 <stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
599 INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
600 UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
601 INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
602 UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
603 UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
604 UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
605 UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
608 * New <math.h> features are added from TS 18661-1:2014:
610 - Signaling NaN macros: SNANF, SNAN, SNANL.
612 - Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
613 fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
614 fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
616 - llogb functions: the llogb, llogbf and llogbl functions, and the
617 FP_LLOGB0 and FP_LLOGBNAN macros.
619 - Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
622 - Comparison macros: iseqsig.
624 - Classification macros: iscanonical, issubnormal, iszero.
626 - Total order functions: totalorder, totalorderf, totalorderl,
627 totalordermag, totalordermagf, totalordermagl.
629 - Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
631 - NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
632 setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
634 * The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
635 are added to libc. They convert a floating-point number into string.
637 * Most of glibc can now be built with the stack smashing protector enabled.
638 It is recommended to build glibc with --enable-stack-protector=strong.
639 Implemented by Nick Alcock (Oracle).
641 * The function explicit_bzero, from OpenBSD, has been added to libc. It is
642 intended to be used instead of memset() to erase sensitive data after use;
643 the compiler will not optimize out calls to explicit_bzero even if they
644 are "unnecessary" (in the sense that no _correct_ program can observe the
645 effects of the memory clear).
647 * On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
648 to float instead of double. This does not affect the ABI of any libraries
649 that are part of the GNU C Library, but may affect the ABI of other
650 libraries that use this type in their interfaces.
652 * On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
653 float_t and double_t types are now defined to long double instead of float
654 and double. These options are not the default, and this does not affect
655 the ABI of any libraries that are part of the GNU C Library, but it may
656 affect the ABI of other libraries that use this type in their interfaces,
657 if they are compiled or used with those options.
659 * The getentropy and getrandom functions, and the <sys/random.h> header file
662 * The buffer size for byte-oriented stdio streams is now limited to 8192
663 bytes by default. Previously, on Linux, the default buffer size on most
664 file systems was 4096 bytes (and thus remains unchanged), except on
665 network file systems, where the buffer size was unpredictable and could be
666 as large as several megabytes.
668 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
669 for the Linux quota interface which predates kernel version 2.4.22 has
672 * The malloc_get_state and malloc_set_state functions have been removed.
673 Already-existing binaries that dynamically link to these functions will
674 get a hidden implementation in which malloc_get_state is a stub. As far
675 as we know, these functions are used only by GNU Emacs and this change
676 will not adversely affect already-built Emacs executables. Any undumped
677 Emacs executables, which normally exist only during an Emacs build, should
678 be rebuilt by re-running “./configure; make” in the Emacs build tree.
680 * The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
681 corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
682 “no-ip6-dotint” had already been the default, and support for the
683 “ip6-dotint” option was removed from the Internet in 2006.
685 * The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
686 flag from <resolv.h> have been removed. The option relied on a
687 backwards-incompatible DNS extension which was never deployed on the
690 * The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
691 RES_BLAST defined in the <resolv.h> header file have been deprecated.
692 They were already unimplemented.
694 * The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
695 _res.flags are deprecated. The flag was standardized in RFC 2133, but
696 removed again from the IETF name lookup interface specification in RFC
697 2553. Applications should use getaddrinfo instead.
699 * DNSSEC-related declarations and definitions have been removed from the
700 <arpa/nameser.h> header file, and libresolv will no longer attempt to
701 decode the data part of DNSSEC record types. Previous versions of glibc
702 only implemented minimal support for the previous version of DNSSEC, which
703 is incompatible with the currently deployed version.
705 * The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
706 ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
707 <arpa/nameser.h> header file because the distinction between RR types and
708 meta-RR types is not officially standardized, subject to revision, and
709 thus not suitable for encoding in a macro.
711 * The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
712 and rhook members of the res_state type in <resolv.h> have been removed.
713 The glibc stub resolver did not support these hooks, but the header file
714 did not reflect that.
716 * For multi-arch support it is recommended to use a GCC which has
717 been built with support for GNU indirect functions. This ensures
718 that correct debugging information is generated for functions
719 selected by IFUNC resolvers. This support can either be enabled by
720 configuring GCC with '--enable-gnu-indirect-function', or by
721 enabling it by default by setting 'default_gnu_indirect_function'
722 variable for a particular architecture in the GCC source file
725 * GDB pretty printers have been added for mutex and condition variable
726 structures in POSIX Threads. When installed and loaded in gdb these pretty
727 printers show various pthread variables in human-readable form when read
728 using the 'print' or 'display' commands in gdb.
730 * Tunables feature added to allow tweaking of the runtime for an application
731 program. This feature can be enabled with the '--enable-tunables' configure
732 flag. The GNU C Library manual has details on usage and README.tunables has
733 instructions on adding new tunables to the library.
735 * A new version of condition variables functions have been implemented in
736 the NPTL implementation of POSIX Threads to provide stronger ordering
739 * A new version of pthread_rwlock functions have been implemented to use a more
740 scalable algorithm primarily through not using a critical section anymore to
743 Security related changes:
745 * On ARM EABI (32-bit), generating a backtrace for execution contexts which
746 have been created with makecontext could fail to terminate due to a
747 missing .cantunwind annotation. This has been observed to lead to a hang
748 (denial of service) in some Go applications compiled with gccgo. Reported
749 by Andreas Schwab. (CVE-2016-6323)
751 * The DNS stub resolver functions would crash due to a NULL pointer
752 dereference when processing a query with a valid DNS question type which
753 was used internally in the implementation. The stub resolver now uses a
754 question type which is outside the range of valid question type values.
757 The following bugs are resolved with this release:
759 [4099] stdio: Overly agressive caching by stream i/o functions.
760 [7065] build: Support building glibc with -fstack-protector or -fstack-
762 [9842] localedata: en_CA: incorrect date format
763 [13165] nptl: pthread_cond_wait() can consume a signal that was sent
764 before it started waiting
765 [14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
766 [15765] nptl: sem_open is wrongly a cancellation point
767 [16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
768 [16458] libc: endian.h and netinet/in.h byte order macros return values of
770 [16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
771 library linked with pthread
772 [16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
774 [16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
775 [17252] libc: getrandom and getentropy syscall
776 [17730] malloc: thread-local storage is sometimes improperly free()'d
777 after being __libc_memalign()'d
778 [18241] stdio: failed fseek on memstream does not set errno and can fail
780 [18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
782 [18463] nptl: pthread_cond_broadcast issue when surrounded by
783 PTHREAD_PRIO_INHERIT mutex on ARM
784 [18784] network: res_query and related function crash for special record
785 type queries (CVE-2015-5180)
786 [19380] math: strtod does not raise "inexact"
787 [19387] string: Integer overflow in memchr
788 [19390] string: Integer overflow in strncat
789 [19398] build: linknamespace tests fail with massively parallel build
790 [19402] nptl: Deadlock with robust shared mutex and asynchronous
792 [19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
793 [19473] malloc: Turn malloc_get_state etc. in compatibility symbols
794 [19514] libc: [PATCH] Fix spelling errors in spelling
795 "implement"/"implementation" in several places
796 [19582] network: Deprecate RES_USE_INET6
797 [19673] manual: clog10 docs appear to be erroneous
798 [19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
799 causes a segmentation fault
800 [19826] libc: invalid pointer returned from __tls_get_addr with static
802 [20016] network: resolv: Remove hooks support from the API
803 [20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
805 [20033] math: [x86_64] vectorized math function don't call the __finite
807 [20116] nptl: use after free in pthread_create
808 [20181] stdio: open_memstream(): writes not at end of stream corrupt data
809 [20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
811 [20311] nptl: please install proc_service.h
812 [20366] libc: Compilation errors in installed headers in strict-compliance
814 [20370] malloc: malloc: Arena free list management is still racy
815 (incorrect fix in bug 19243)
816 [20386] libc: assert (X = 0) does not result in GCC warning
817 [20432] malloc: malloc: Minimize interface required for interposition
818 [20435] libc: Missing unwind info in __startcontext causes infinite loop
819 in _Unwind_Backtrace (CVE-2016-6323)
820 [20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
821 [20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
823 [20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
824 [20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
825 [20477] network: resolv: incorrect double-checked locking related to
827 [20478] libc: libc_ifunc macro and similar usages leads to false debug-
829 [20495] math: x86_64 performance degradation due to AVX/SSE transition
831 [20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
832 [20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
833 cause transition penalty
834 [20517] math: sparcv9 missing fdiml compat symbol
835 [20524] manual: strverscmp is inconsistent
836 [20525] libc: <sys/quota.h> should be based on kernel headers
837 [20539] math: GCC 7 -static -lm fails to link at -O3
838 [20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
840 [20558] string: POSIX bcopy/bzero decls do not implement Object Size
842 [20591] network: Remove obsolete DNSSEC support
843 [20592] network: DNS resource record type classification macros in
844 <arpa/nameser.h> are incorrect
845 [20593] network: Update DNS RR type definitions
846 [20611] network: getaddrinfo accepts invalid numeric scope IDs
847 [20615] build: glibc build fails when using --with-cpu=power9 --enable-
849 [20629] network: libresolv: Remove support for bitstring labels
851 [20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
852 assertion: "maxidx >= 2"
853 [20660] math: [arm] Use VSQRT
854 [20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
855 -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
856 [20689] libc: Test for FMA should also check for AVX.
857 [20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
858 [20715] math: iszero macro breaks existing code
859 [20718] math: [powerpc] copysignl raises "invalid" for sNaN
860 [20728] libc: powerpc: Missing TOC stub in clone
861 [20729] build: glibc-2.24 fails to build for i486 with -Os
862 [20750] build: Build fails with default PIE enabled gcc-6.x
863 [20768] math: [alpha] sqrt fegetenv namespace
864 [20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
866 [20787] math: float_t is defined as float incorrectly on x86_64 even if
867 __FLT_EVAL_METHOD__ is 2
868 [20790] network: rpcgen buffer overrun in get_prog_declaration
869 [20822] nptl: race condition in __lll_unlock_elision on powerpc
870 [20829] libc: crypt snprintf namespace
871 [20847] libc: tst-vfork3 failure
872 [20855] math: Default bits/mathdef.h has inappropriate float_t
873 [20859] math: [sh4] FP_ILOGB0 invalid
874 [20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
875 U+20AC), not same as GBK
876 [20915] dynamic-link: global-dynamic TLS broken on aarch64
877 [20916] math: pow handling of sNaN arguments
878 [20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
879 [20919] math: Bad pow (qNaN, 0) result with -lieee
880 [20940] math: hypot sNaN handling
881 [20947] math: fmax, fmin sNaN handling
882 [20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
883 [20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
885 [20971] string: powerpc64/power7 memchr overflows internal pointer check
886 [20973] nptl: robust mutexes: Lost wake-ups
887 [20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
888 [20978] nis: strlen on null pointer in nss_nisplus
889 [20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
891 [21014] string: i686 memchr overflows internal pointer check
892 [21019] libc: [mips] n32 lseek incorrect on overflow
893 [21022] libc: [microblaze] __backtrace get_frame_size namespace
894 [21026] libc: [MIPS] readahead syscall is broken on n64
895 [21028] math: Fallback fesetexceptflag should always succeed
896 [21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
897 [21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
899 [21053] libc: [SH] Namespace pollution from sys/ucontext.h
900 [21061] librt: [microblaze] librt lost clock_* exports
901 [21073] libc: tunables: insecure environment variables passed to
902 subprocesses with AT_SECURE
903 [21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
907 * The minimum Linux kernel version that this version of the GNU C Library
908 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
909 kernel version 2.6.32 or later suffices (on architectures that already
910 required kernel versions more recent than 3.2, those requirements remain
911 unchanged). Linux 3.2 or later kernel headers are required on all
914 * The pap_AN locale has been deleted. This has been deprecated for a long
915 time. It has been replaced by pap_AW & pap_CW, both of which have long
916 been included in previous releases.
918 * The readdir_r and readdir64_r functions have been deprecated. It is
919 recommended to use readdir and readdir64 instead.
921 * The type “union wait” has been removed. It was deprecated in the early
922 1990s and never part of POSIX. Application code should use the int type
923 instead of “union wait”.
925 * A new NSS action is added to facilitate large distributed system
926 administration. The action, MERGE, allows remote user stores like LDAP
927 to be merged into local user stores like /etc/groups in order to provide
928 easy to use, updated, and managed sets of merged credentials. The new
929 action can be used by configuring it in /etc/nsswitch.conf:
930 group: files [SUCCESS=merge] nis
931 Implemented by Stephen Gallagher (Red Hat).
933 * The deprecated __malloc_initialize_hook variable has been removed from the
936 * The long unused localedef --old-style option has been removed. It hasn't
937 done anything in over 16 years. Scripts using this option can safely
940 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
941 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
942 return the next representable value in the direction of positive infinity
943 and the nextdown functions return the next representable value in the
944 direction of negative infinity. These are currently enabled as GNU
947 Security related changes:
949 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
950 could result in a stack overflow when getnetbyname was called with an
951 overly long name. (CVE-2016-3075)
953 * Previously, getaddrinfo copied large amounts of address data to the stack,
954 even after the fix for CVE-2013-4458 has been applied, potentially
955 resulting in a stack overflow. getaddrinfo now uses a heap allocation
956 instead. Reported by Michael Petlan. (CVE-2016-3706)
958 * The glob function suffered from a stack-based buffer overflow when it was
959 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
960 Reported by Alexander Cherepanov. (CVE-2016-1234)
962 * The Sun RPC UDP client could exhaust all available stack space when
963 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
964 alloca plugin for GCC. (CVE-2016-4429)
966 * The IPv6 name server management code in libresolv could result in a memory
967 leak for each thread which is created, performs a failing naming lookup,
968 and exits. Over time, this could result in a denial of service due to
969 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
971 The following bugs are resolved with this release:
973 [1170] localedata: ne_NP: update Nepali locale definition file
974 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
976 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
977 [6796] math: fdim() does not set errno on overflow
978 [10354] libc: posix_spawn should use vfork() in more cases than presently
979 [11213] localedata: localedata: add copyright disclaimer to locale files
980 [12143] localedata: chr_US: new Cherokee locale
981 [12450] localedata: sgs_LT: new locale
982 [12676] localedata: ln_CD: new locale
983 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
985 [13304] math: fma, fmaf, fmal produce wrong results
986 [14259] build: --localedir arg to configure is ignored
987 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
988 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
989 [14934] localedata: es_CL: wrong first weekday chilean locale
990 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
992 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
994 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
995 [15368] nptl: raise() is not async-signal-safe
996 [15479] math: ceil, floor, round and trunc raise inexact exception
997 [15578] localedata: kk_KZ: various updates
998 [16003] localedata: pap_AN: punt old locale
999 [16137] localedata: iw_IL: punt old locale
1000 [16190] localedata: eo: new esperanto locale
1001 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
1002 [16742] malloc: race condition: pthread_atfork() called before first
1003 malloc() results in unexpected locking behaviour/deadlocks
1004 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
1006 [16983] localedata: postal_fmt does not allow %l and %n modifiers
1007 [17565] localedata: pt_PT: wrong (work-)week start
1008 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
1009 [17950] build: Build fails with -msse
1010 [18205] localedata: be_BY*: wrong first_weekday and first_workday
1011 [18433] libc: posix_spawn does not return correctly upon failure to
1013 [18453] localedata: charmaps/IBM875: incorrect codes
1014 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
1016 [18896] localedata: he_IL: improvements for currency
1017 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
1018 Romanian locale data
1019 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
1021 [19056] libc: Deprecate readdir_r
1022 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
1024 [19198] localedata: nl_NL: small improvements for Dutch locales
1025 [19257] network: Per-thread memory leak in __res_vinit with IPv6
1026 nameservers (CVE-2016-5417)
1027 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
1029 [19400] locale: Language missing in "iso-639.def", trivial fix in
1031 [19431] malloc: Deadlock between fflush, getdelim, and fork
1032 [19505] libc: Incorrect file descriptor validity checks in
1033 posix_spawn_file_actions_add{open,close,dup2}
1034 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
1035 when using RTLD_NEXT
1036 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
1037 `intl/{gettextP,loadinfo}.h'
1038 [19534] libc: execle, execlp may use malloc
1039 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
1040 [19573] network: res_nclose and __res_maybe_init disagree about name
1041 server initialization, breaking Hesiod
1042 [19575] localedata: Status of GB18030 tables
1043 [19581] localedata: sr_* date_fmt string contains additional newline
1044 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
1046 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
1047 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
1048 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
1049 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
1051 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
1053 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
1055 [19610] dynamic-link: ldconfig -X removes stale symbolic links
1056 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
1057 [19633] locale: strfmon_l applies global locale to number formatting
1058 [19642] network: Memory leak in getnameinfo
1059 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
1060 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
1062 [19654] math: [x86_64] Need testcase for BZ #19590 fix
1063 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
1065 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
1066 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
1068 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
1070 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
1072 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
1073 pointers and lengths in error-case.
1074 [19727] locale: Converting from/to UTF-xx with iconv() does not always
1075 report errors on UTF-16 surrogates values.
1076 [19755] nscd: nscd assertion failure in gc
1077 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
1078 [19759] libc: mempcpy shouldn't be inlined
1079 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
1080 [19765] libc: s390 needs an optimized mempcpy
1081 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
1082 NAME_MAX limit assumption (CVE-2016-1234)
1083 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
1084 [19787] network: Missing and incorrect truncation checks in getnameinfo
1085 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
1087 [19791] network: Assertion failure in res_query.c with un-connectable name
1089 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
1090 [19822] math: libm.so install clobbers old version
1091 [19825] network: resolv: send_vc can return uninitialized data in second
1092 response to getaddrinfo
1093 [19830] network: nss_dns: should check RDATA length against buffer length
1094 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
1095 confronted with A/AAAA records of invalid size
1096 [19837] nss: nss_db: No retries for some long lines with a larger buffer
1097 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
1098 [19853] stdio: Printing IBM long double in decimal with high precision is
1100 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
1101 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
1102 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
1104 [19865] network: Assertion failure or memory leak in
1105 _nss_dns_getcanonname_r
1106 [19868] network: nss_dns: netent code does not skip over non-PTR records
1107 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
1109 [19881] string: Improve x86-64 memset
1110 [19907] string: Incorrect memcpy tests
1111 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
1113 [19925] libc: termios.h XCASE namespace
1114 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
1115 [19929] libc: limits.h NL_NMAX namespace
1116 [19931] stdio: Memory leak in vfprintf
1117 [19957] libc: clone(CLONE_VM) access invalid parent memory
1118 [19963] localedata: en_IL: New locale
1119 [19989] stdio: stdio.h cuserid namespace
1120 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
1122 [19996] locale: langinfo.h nl_langinfo_l namespace
1123 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
1124 [20010] network: getaddrinfo: Stack overflow in hostent translation
1126 [20012] stdio: libio: fmemopen append mode failure
1127 [20014] stdio: stdio.h namespace for pre-threads POSIX
1128 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
1129 [20023] libc: fcntl.h timespec namespace
1130 [20024] math: [x86_64] vectorized sincos trashes the stack
1131 [20031] network: nss_hesiod: Heap overflow in get_txt_records
1132 [20041] time: sys/time.h timespec namespace
1133 [20043] libc: unistd.h missing cuserid for UNIX98 and before
1134 [20044] libc: unistd.h missing pthread_atfork for UNIX98
1135 [20051] libc: ttyslot in wrong header under wrong conditions
1136 [20054] libc: gethostname not declared for XPG4
1137 [20055] libc: termios.h missing tcgetsid for XPG4
1138 [20072] dynamic-link: x86 init_cpu_features is called twice in static
1140 [20073] libc: sys/stat.h fchmod namespace
1141 [20074] libc: stdlib.h rand_r namespace
1142 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
1143 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
1145 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
1146 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
1148 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
1149 [20119] libc: Wrong mask for processors level type from CPUID
1150 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
1151 AS not supporting AVX512
1152 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
1154 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
1155 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
1157 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
1158 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
1159 [20178] libc: posix_spawn{p} should not call exit
1160 [20191] stdio: libio: vtables hardening
1161 [20195] string: FMA4 detection requires CPUID execution with register
1163 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
1164 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
1166 [20212] math: acos (sNaN) returns sNaN
1167 [20213] math: asin (sNaN) returns sNaN
1168 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
1169 [20218] math: [i386] asinhl (sNaN) returns sNaN
1170 [20219] math: [i386] atanhl (sNaN) returns sNaN
1171 [20222] stdio: fopencookie: Mangle function pointers
1172 [20224] math: [i386] cbrtl (sNaN) returns sNaN
1173 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
1174 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
1176 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
1177 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
1178 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
1179 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
1180 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
1181 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
1182 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
1183 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
1184 [20240] math: modf (sNaN) returns sNaN
1185 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
1186 [20250] math: frexp (sNaN) returns sNaN
1187 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
1188 [20255] math: [i386] fdim, fdimf return with excess range and precision /
1190 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
1191 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
1192 subscript is below array bounds [-Werror=array-bounds]
1193 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
1194 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
1196 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
1197 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
1199 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
1200 "invalid" exceptions
1201 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
1202 [20316] localedata: id_ID: Februari instead of Pebruari
1203 [20327] string: POWER8 strcasecmp returns incorrect result
1204 [20347] math: Failure: Test: j0_downward (0xap+0)
1205 [20348] libc: FAIL: misc/tst-preadvwritev64
1206 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
1207 [20350] libc: There is no test for p{read,write}64
1208 [20357] math: Incorrect cos result for 1.5174239687223976
1209 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
1213 * Unicode 8.0.0 Support: Character encoding, character type info, and
1214 transliteration tables are all updated to Unicode 8.0.0, using new
1215 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
1216 These updates cause user visible changes, such as the fixes for bugs
1217 89, 16061, and 18568.
1219 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
1220 kernel-internal CPU set size. This means that requests that change the
1221 CPU affinity which failed before (for example, an all-ones CPU mask) will
1222 now succeed. Applications that need to determine the effective CPU
1223 affinities need to call sched_getaffinity or pthread_getaffinity_np after
1224 setting it because the kernel can adjust it (and the previous size check
1225 would not detect this in the majority of cases).
1227 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
1228 the following new symbols are used: fts64_children, fts64_close,
1229 fts64_open, fts64_read and fts64_set.
1231 * getaddrinfo now detects certain invalid responses on an internal netlink
1232 socket. If such responses are received, an affected process will
1233 terminate with an error message of "Unexpected error <number> on netlink
1234 descriptor <number>" or "Unexpected netlink response of size <number> on
1235 descriptor <number>". The most likely cause for these errors is a
1236 multi-threaded application which erroneously closes and reuses the netlink
1237 file descriptor while it is used by getaddrinfo.
1239 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
1240 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
1241 unnecessary serialization of memory allocation requests across threads.
1242 The defect is now corrected. Users should see a substantial increase in
1243 the concurent throughput of allocation requests for applications which
1244 trigger this bug. Affected applications typically create and
1245 destroy threads frequently. (Bug 19048 was reported and analyzed by
1248 * There is now a --disable-timezone-tools configure option for disabling the
1249 building and installing of the timezone related utilities (zic, zdump, and
1250 tzselect). This is useful for people who build the timezone data and code
1251 independent of the GNU C Library.
1253 * The obsolete header <regexp.h> has been removed. Programs that require
1254 this header must be updated to use <regex.h> instead.
1256 * The obsolete functions bdflush, create_module, get_kernel_syms,
1257 query_module and uselib are no longer available to newly linked binaries;
1258 the header <sys/kdaemon.h> has been removed. These functions and header
1259 were specific to systems using the Linux kernel and could not usefully be
1260 used with the GNU C Library on systems with version 2.6 or later of the
1263 * Optimized string, wcsmbs and memory functions for IBM z13.
1264 Implemented by Stefan Liebler.
1266 * Newly linked programs that define a variable called signgam will no longer
1267 have it set by the lgamma, lgammaf and lgammal functions. Programs that
1268 require signgam to be set by those functions must ensure that they use the
1269 variable provided by the GNU C Library and declared in <math.h>, without
1270 defining their own copy.
1272 * The minimum GCC version that can be used to build this version of the GNU
1273 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
1274 still be used to compile programs using the GNU C Library.
1276 Security related changes:
1278 * An out-of-bounds value in a broken-out struct tm argument to strftime no
1279 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
1281 * The LD_POINTER_GUARD environment variable can no longer be used to disable
1282 the pointer guard feature. It is always enabled. Previously,
1283 LD_POINTER_GUARD could be used to disable security hardening in binaries
1284 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
1287 * An integer overflow in hcreate and hcreate_r could lead to an
1288 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
1290 * The catopen function no longer has unbounded stack usage. Reported by
1291 Max. (CVE-2015-8779)
1293 * The nan, nanf and nanl functions no longer have unbounded stack usage
1294 depending on the length of the string passed as an argument to the
1295 functions. Reported by Joseph Myers. (CVE-2014-9761)
1297 * A stack-based buffer overflow was found in libresolv when invoked from
1298 libnss_dns, allowing specially crafted DNS responses to seize control
1299 of execution flow in the DNS client. The buffer overflow occurs in
1300 the functions send_dg (send datagram) and send_vc (send TCP) for the
1301 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
1302 family. The use of AF_UNSPEC triggers the low-level resolver code to
1303 send out two parallel queries for A and AAAA. A mismanagement of the
1304 buffers used for those queries could result in the response of a query
1305 writing beyond the alloca allocated buffer created by
1306 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
1307 the overflow. Thanks to the Google Security Team and Red Hat for
1308 reporting the security impact of this issue, and Robert Holiday of
1309 Ciena for reporting the related bug 18665. (CVE-2015-7547)
1311 The following bugs are resolved with this release:
1313 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
1314 [887] math: Math library function "logb" and "nextafter" inconsistent
1315 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
1316 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
1317 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
1318 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
1320 [4404] localedata: German translation of "Alarm clock" is misleading
1321 [6799] math: nextafter() and nexttoward() doen't set errno on
1322 overflow/underflow errors
1323 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
1325 [10432] nis: _nss_nis_setnetgrent assertion failure
1326 [11460] libc: fts has no LFS support
1327 [12926] network: getaddrinfo()/make_request() may spin forever
1328 [13065] nptl: Race condition in pthread barriers
1329 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
1330 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
1332 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
1333 [14912] libc: Rename non-installed bits/*.h headers
1334 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
1335 [15367] math: Let gcc use __builtin_isinf
1336 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
1337 [15421] math: lgamma wrongly sets signgam for ISO C
1338 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
1339 FE_INVALID with argument out of range
1340 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
1342 [15786] dynamic-link: ifunc resolver functions can smash function
1344 [15918] math: Unnecessary check for equality in hypotf()
1345 [16061] localedata: Review / update transliteration data
1346 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
1348 [16141] time: strptime %z offset restriction
1349 [16171] math: drem should be alias of remainder
1350 [16296] math: fegetround is pure?
1351 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
1352 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
1354 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
1355 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
1357 [16422] math: [powerpc] math-float, math-double failing llrint tests with
1358 "Exception "Inexact" set" on ppc32
1359 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
1360 [16517] math: Missing underflow exception from tanf/tan/tanl
1361 [16519] math: Missing underflow exception from sinhf
1362 [16520] math: Missing underflow exception from tanhf
1363 [16521] math: Missing underflow exception from exp2
1364 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
1366 [16734] stdio: fopen calls mmap to allocate its buffer
1367 [16961] math: nan function incorrect handling of bad sequences
1368 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
1369 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
1370 [16985] locale: localedef: confusing error message when opening output
1372 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
1373 [17197] locale: Redundant shift character in iconv conversion output at
1375 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
1376 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
1377 [17250] dynamic-link: static linking breaks nss loading
1378 (getaddrinfo/getpwnam/etc...)
1379 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
1381 [17441] math: isnan() should use __builtin_isnan() in GCC
1382 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
1383 (related to lock elision)
1384 [17787] manual: Exponent on page 324 of the PDF ends prematurely
1385 [17886] time: strptime should be able to parse "Z" as a timezone with %z
1386 [17887] time: strptime should be able to parse "+01:00" style timezones
1387 [17905] libc: catopen() Multiple unbounded stack allocations
1389 [18084] libc: backtrace (..., 0) dumps core on x86
1390 [18086] libc: nice() sets errno to 0 on success
1391 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
1392 is too large (CVE-2015-8778)
1393 [18251] dynamic-link: SONAME missing when audit modules provides path
1394 [18265] libc: add attributes for wchar string and memory functions
1395 [18370] math: csqrt missing underflows
1396 [18421] libc: [hppa] read-only segment has dynamic relocations
1397 [18472] libc: Obsolete syscall wrappers should be compat symbols
1398 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
1399 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
1400 [18525] localedata: Remove locale timezone information
1401 [18560] libc: [powerpc] spurious bits/ipc.h definitions
1402 [18568] localedata: Update locale data to Unicode 8.0
1403 [18589] locale: sort-test.sh fails at random
1404 [18595] math: ctan, ctanh missing underflows
1405 [18604] libc: assert macro-expands its argument
1406 [18610] math: S390: fetestexcept() reports any exception if DXC-code
1407 contains a vector instruction exception.
1408 [18611] math: j1, jn missing errno setting on underflow
1409 [18618] localedata: sync Chechen locale definitions with other *_RU
1411 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
1412 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
1413 [18665] network: In send_dg, the recvfrom function is NOT always using the
1414 buffer size of a newly created buffer (CVE-2015-7547)
1415 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
1417 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
1419 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
1420 [18699] math: tilegx cproj() for various complex infinities does not yield
1422 [18724] libc: Harden put*ent functions against data injection
1423 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
1424 [18755] build: build errors with -DNDEBUG
1425 [18757] stdio: fmemopen fails to set errno on failure
1426 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
1428 [18781] libc: openat64 lacks O_LARGEFILE
1429 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
1430 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
1431 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
1432 [18790] math: [ldbl-128ibm] tanhl inaccurate
1433 [18795] libc: stpncpy fortification misses buffer lengths that are
1434 statically too large
1435 [18796] build: build fails for --disable-mathvec
1436 [18803] math: hypot missing underflows
1437 [18820] stdio: fmemopen may leak memory on failure
1438 [18823] math: csqrt spurious underflows
1439 [18824] math: fma spurious underflows
1440 [18825] math: pow missing underflows
1441 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
1442 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
1443 [18870] build: sem_open.c fails to compile with missing symbol
1445 [18872] stdio: Fix memory leak in printf_positional
1446 [18873] libc: posix_fallocate overflow check ineffective
1447 [18875] math: Excess precision leads incorrect libm
1448 [18877] libc: arm: mmap offset regression
1449 [18887] libc: memory corruption when using getmntent on blank lines
1450 [18918] localedata: hu_HU: change time to HH:MM:SS format
1451 [18921] libc: Regression: extraneous stat() and fstat() performed by
1453 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
1454 binaries (CVE-2015-8777)
1455 [18951] math: tgamma missing underflows
1456 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
1458 [18953] localedata: lt_LT: change currency symbol to the euro
1459 [18956] math: powf inaccuracy
1460 [18961] math: [i386] exp missing underflows
1461 [18966] math: [i386] exp10 missing underflows
1462 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
1463 [18969] build: multiple string test failures due to missing locale
1465 [18970] libc: Reference of pthread_setcancelstate in libc.a
1466 [18977] math: float / long double Bessel functions not in XSI POSIX
1467 [18980] math: i386 libm functions return with excess range and precision
1468 [18981] math: i386 scalb*, ldexp return with excess range and precision
1469 [18982] stdio: va_list and vprintf
1470 [18985] time: Passing out of range data to strftime() causes a segfault
1472 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
1473 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
1474 [19012] locale: iconv_open leaks memory on error path
1475 [19016] math: clog, clog10 inaccuracy
1476 [19018] nptl: Mangle function pointers in tls_dtor_list
1477 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
1478 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
1479 [19048] malloc: malloc: arena free list can become cyclic, increasing
1481 [19049] math: [powerpc] erfc incorrect zero sign
1482 [19050] math: [powerpc] log* incorrect zero sign
1483 [19058] math: [x86_64] Link fail with -fopenmp and -flto
1484 [19059] math: nexttoward overflow incorrect in non-default rounding modes
1485 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
1486 [19074] network: Data race in _res_hconf_reorder_addrs
1487 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
1488 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
1489 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
1491 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
1493 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
1494 [19086] manual: posix_fallocate64 documented argument order is wrong.
1495 [19088] math: lround, llround missing exceptions close to overflow
1497 [19094] math: lrint, llrint missing exceptions close to overflow threshold
1498 [19095] math: dbl-64 lrint incorrect for 64-bit long
1499 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
1500 [19124] dynamic-link: ld.so failed to build with older assmebler
1501 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
1502 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
1503 [19134] math: [powerpc32] lround, lroundf spurious exceptions
1504 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
1505 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
1506 pthread_setaffinity_np
1507 [19156] math: [ldbl-128] j0l spurious underflows
1508 [19164] nptl: tst-getcpu fails with many possible CPUs
1509 [19168] math: math/test-ildoubl and math/test-ldouble failure
1510 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
1511 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
1513 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
1514 (FE_NOMASK_ENV) do not clear SSE exceptions
1515 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
1516 _int_new_arena/reused_arena
1517 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
1518 [19201] math: dbl-64 remainder incorrect sign of zero result
1519 [19205] math: bits/math-finite.h conditions do not match math.h and
1521 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
1522 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
1523 for C99-based standards
1524 [19212] libc: features.h not -Wundef clean
1525 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
1527 [19214] libc: Family and model identification for AMD CPU's are incorrect.
1528 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
1529 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
1531 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
1532 "inexact" exceptions
1533 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
1535 [19242] libc: strtol incorrect in Turkish locales
1536 [19243] malloc: reused_arena can pick an arena on the free list, leading
1537 to an assertion failure and reference count corruption
1538 [19253] time: tzset() ineffective when temporary TZ did not include DST
1540 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
1541 [19270] math: [hppa] Shared libm missing __isnanl
1542 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
1543 MAP_HUGETLB and MAP_STACK defines
1544 [19313] nptl: Wrong __cpu_mask for x32
1545 [19347] libc: grantpt: try to force a specific gid even without pt_chown
1546 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
1547 [19350] math: [ldbl-128ibm] sinhl spurious overflows
1548 [19351] math: [ldbl-128ibm] logl inaccurate near 1
1549 [19363] time: x32: times() return value wrongly truncates/sign extends
1551 [19367] dynamic-link: Improve branch prediction on Silvermont
1552 [19369] network: Default domain name not reset by res_ninit when "search"
1553 / "domain" entry is removed from resolv.conf
1554 [19375] math: powerpc: incorrect results for POWER7 logb with negative
1556 [19385] localedata: bg_BG: time separator should be colon, not comma
1557 [19408] libc: linux personality syscall wrapper may erroneously return an
1558 error on 32-bit architectures
1559 [19415] libc: dladdr returns wrong names on hppa
1560 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
1561 IBM905, IBM907, and IBM909
1562 [19439] math: Unix98 isinf and isnan functions conflict with C++11
1563 [19443] build: build failures with -DDEBUG
1564 [19451] build: Make check fails on test-double-vlen2
1565 [19462] libc: Glibc failed to build with -Os
1566 [19465] math: Wrong code with -Os
1567 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
1569 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
1571 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
1572 [19486] math: S390: Math tests fail with "Exception Inexact set".
1573 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
1574 [19550] libc: [mips] mmap negative offset handling inconsistent with other
1576 [19590] math: Fail to build shared objects that use libmvec.so functions.
1580 * The following bugs are resolved with this release:
1582 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
1583 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
1584 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
1585 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
1586 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
1587 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
1588 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
1589 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
1590 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
1591 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
1592 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
1593 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
1594 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
1595 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
1596 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
1597 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
1598 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
1599 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
1600 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
1601 18657, 18676, 18694, 18696, 18887.
1603 * Cache information can be queried via sysconf() function on s390 e.g. with
1604 _SC_LEVEL1_ICACHE_SIZE as argument.
1606 * A buffer overflow in gethostbyname_r and related functions performing DNS
1607 requests has been fixed. If the NSS functions were called with a
1608 misaligned buffer, the buffer length change due to pointer alignment was
1609 not taken into account. This could result in application crashes or,
1610 potentially arbitrary code execution, using crafted, but syntactically
1611 valid DNS responses. (CVE-2015-1781)
1613 * The time zone file parser has been made more robust against crafted time
1614 zone files, avoiding heap buffer overflows related to the processing of
1615 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
1616 large time zone data files. Overly long time zone specifiers in the TZ
1617 variable no longer result in stack overflows and crashes.
1619 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
1620 for LD and GD on x86 and x86-64, has been implemented. You will need
1621 binutils-2.24 or later to enable this optimization.
1623 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
1624 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
1625 Hat). These updates cause user visible changes, such as the fix for bug
1628 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
1629 and getXXbyYY NSS calls for the same database, causing a denial-of-service
1630 condition in some applications.
1632 * Added vector math library named libmvec with the following vectorized x86_64
1633 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
1635 The library can be disabled with --disable-mathvec. Use of the functions is
1636 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
1637 Shared library libmvec.so is linked in as needed when using -lm (no need to
1638 specify -lmvec explicitly for not static builds).
1639 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
1641 * A new fmemopen implementation has been added with the goal of POSIX
1642 compliance. The new implementation fixes the following long-standing
1643 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
1644 old implementation is still present for use be by existing binaries.
1646 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
1647 releases. It has been fixed to match 2.19 and older, but binaries built
1648 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
1650 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
1651 Contributed by Roland McGrath (Google).
1653 * The header <regexp.h> is deprecated, and will be removed in a future
1654 release. Use of this header will trigger a deprecation warning.
1655 Application developers should update their code to use <regex.h> instead.
1657 This header was formerly part of SUS, but was deprecated in 1994 and
1658 removed from the standard in 2001. Also, the glibc implementation
1659 leaks memory. See BZ#18681 for more details.
1663 * The following bugs are resolved with this release:
1665 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
1666 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
1667 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
1668 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
1669 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
1670 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
1671 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
1672 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
1673 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
1674 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
1677 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
1678 too little memory for the to-be-scanned arguments and overflow the
1679 allocated buffer. The implementation now correctly computes the required
1680 buffer size when using malloc, and switches to malloc from alloca as
1683 * A new semaphore algorithm has been implemented in generic C code for all
1684 machines. Previous custom assembly implementations of semaphore were
1685 difficult to reason about or ensure that they were safe. The new version
1686 of semaphore supports machines with 64-bit or 32-bit atomic operations.
1687 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
1688 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
1690 * Port to Altera Nios II has been contributed by Mentor Graphics.
1692 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
1693 implementations for powerpc64/powerpc64le.
1694 Implemented by Adhemerval Zanella (IBM).
1696 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
1697 and powerpc64le. This may improve lock scaling of existing programs on
1698 HTM capable systems. The lock elision code is only enabled with
1699 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
1700 powerpc will issue a transaction abort on every syscall to avoid side
1701 effects being visible outside transactions.
1703 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
1704 AArch64. Contributed by ARM Ltd.
1706 * i386 memcpy functions optimized with SSE2 unaligned load/store.
1708 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
1709 under certain input conditions resulting in the execution of a shell for
1710 command substitution when the application did not request it. The
1711 implementation now checks WRDE_NOCMD immediately before executing the
1712 shell and returns the error WRDE_CMDSUB as expected.
1714 * CVE-2012-3406 printf-style functions could run into a stack overflow when
1715 processing format strings with a large number of format specifiers.
1717 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
1718 infinite loop if the DNS response contained a PTR record of an unexpected
1721 * The minimum GCC version that can be used to build this version of the GNU
1722 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
1723 still be used to compile programs using the GNU C Library.
1725 * The GNU C Library is now built with -Werror by default. This can be
1726 disabled by configuring with --disable-werror.
1728 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
1730 * The obsolete sigvec function has been removed. This was the original
1731 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
1732 programs have been using instead for about 25 years. Of course, ABI
1733 compatibility for old binaries using sigvec remains intact.
1735 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
1736 with newer versions of bison.
1738 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
1739 The original MIPS o32 hard-float ABI requires an FPU where double-precision
1740 registers overlay two consecutive single-precision registers. MIPS32R2
1741 introduced a new FPU mode (FR=1) where double-precision registers extend the
1742 corresponding single-precision registers which is incompatible with the
1743 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
1744 require the use of FR=1 making a transition necessary. New o32 ABI
1745 extensions enable users to migrate over time from the original o32 ABI
1746 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
1747 tracks the ABI of any loaded object and verifies that new objects are
1748 compatible. Mode transitions will also be requested as required and
1749 unsupportable objects will be rejected. The ABI checks include both soft and
1750 hard float ABIs for o32, n32 and n64.
1752 GCC 5 with GNU binutils 2.25 onwards:
1753 It is strongly recommended that all o32 system libraries are built using the
1754 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
1755 with the original and all new o32 ABI extensions. Configure a MIPS GCC
1756 compiler using --with-fp-32=xx to set this by default.
1760 * The following bugs are resolved with this release:
1762 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
1763 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
1764 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
1765 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
1766 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
1767 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
1768 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
1769 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
1770 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
1771 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
1772 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
1773 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
1774 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
1775 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
1776 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
1778 * Reverted change of ABI data structures for s390 and s390x:
1779 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
1780 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
1781 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
1782 are preserved pointing straight to the same implementation as the old ones.
1783 Given that, new callers will simply provide a too-big buffer to these
1784 functions. Any applications/libraries out there that embed jmp_buf or
1785 ucontext_t in an ABI-relevant data structure that have already been rebuilt
1786 against 2.19 headers will have to rebuilt again. This is necessary in any
1787 case to revert the breakage in their ABI caused by the glibc change.
1789 * Support for file description locks is added to systems running the
1790 Linux kernel. The standard file locking interfaces are extended to
1791 operate on file descriptions, not file descriptors, via the use of
1792 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
1793 are associated with an open file instead of a process.
1795 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
1797 * The minimum Linux kernel version that this version of the GNU C Library
1798 can be used with is 2.6.32.
1800 * Running the testsuite no longer terminates as soon as a test fails.
1801 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
1802 with PASS or FAIL lines for individual tests. A summary of the results is
1803 printed, including a list of failing lists, and "make check" exits with
1804 error status if there were any unexpected failures. "make check
1805 stop-on-test-failure=y" may be used to keep the old behavior.
1807 * The am33 port, which had not worked for several years, has been removed
1810 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
1811 supported; they now act the same as _DEFAULT_SOURCE (but generate a
1812 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
1813 conflicted with POSIX (support for which was removed in 2.19), the
1814 interfaces those macros enabled remain available when compiling with
1815 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
1816 test macros defined.
1818 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
1820 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
1821 This may improve lock scaling of existing programs on TX capable systems.
1822 The lock elision code is only built with --enable-lock-elision=yes and
1823 then requires a GCC version supporting the TX builtins. With lock elision
1824 default mutexes are elided via __builtin_tbegin, if the cpu supports
1825 transactions. By default lock elision is not enabled and the elision code
1828 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
1829 copy the path argument. This allowed programs to cause posix_spawn to
1830 deference a dangling pointer, or use an unexpected pathname argument if
1831 the string was modified after the posix_spawn_file_actions_addopen
1834 * All supported architectures now use the main glibc sysdeps directory
1835 instead of some being in a separate "ports" directory (which was
1836 distributed separately before glibc 2.17).
1838 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
1839 On configurations that support it (all Linux configurations), it's now
1840 used regardless of the --enable-add-ons switch to configure. It is no
1841 longer possible to build such configurations without pthreads support.
1843 * Locale names, including those obtained from environment variables (LANG
1844 and the LC_* variables), are more tightly checked for proper syntax.
1845 setlocale will now fail (with EINVAL) for locale names that are overly
1846 long, contain slashes without starting with a slash, or contain ".." path
1847 components. (CVE-2014-0475) Previously, some valid locale names were
1848 silently replaced with the "C" locale when running in AT_SECURE mode
1849 (e.g., in a SUID program). This is no longer necessary because of the
1852 * On x86-64, the dynamic linker's lazy-binding support is now compatible
1853 with application code using Intel MPX instructions. (With all previous
1854 versions, the MPX register state could be clobbered when making calls
1855 into or out of a shared library.) Note that while the new dynamic
1856 linker is compatible with all known x86 hardware whether or not it
1857 supports Intel MPX, some x86 instruction-set emulators might fail to
1858 handle the new instruction encodings. This is known to affect Valgrind
1859 versions up through 3.9 (but will be fixed in the forthcoming 3.10
1860 release), and might affect other tools that do instruction emulation.
1862 * Support for loadable gconv transliteration modules has been removed.
1863 The support for transliteration modules has been non-functional for
1864 over a decade, and the removal is prompted by security defects. The
1865 normal gconv conversion modules are still supported. Transliteration
1866 with //TRANSLIT is still possible, and the //IGNORE specifier
1867 continues to be supported. (CVE-2014-5119)
1869 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
1870 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
1871 resulting a denial-of-service security vulnerability in applications which
1872 use functions related to iconv. (CVE-2014-6040)
1876 * The following bugs are resolved with this release:
1878 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
1879 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
1880 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
1881 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
1882 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
1883 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
1884 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
1885 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
1886 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
1887 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
1888 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
1889 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
1890 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
1891 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
1892 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
1893 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
1894 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
1895 16431, 16453, 16474, 16506, 16510, 16529
1897 * Slovenian translations for glibc messages have been contributed by the
1898 Translation Project's Slovenian team of translators.
1900 * The public headers no longer use __unused nor __block. This change is to
1901 support compiling programs that are derived from BSD sources and use
1902 __unused internally, and to support compiling with Clang's -fblock
1903 extension which uses __block.
1905 * CVE-2012-4412 The strcoll implementation caches indices and rules for
1906 large collation sequences to optimize multiple passes. This cache
1907 computation may overflow for large collation sequences and may cause a
1908 stack or buffer overflow. This is now fixed to use a slower algorithm
1909 which does not use a cache if there is an integer overflow.
1911 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
1912 rules for large collation sequences to optimize multiple passes and falls
1913 back to alloca if malloc fails, resulting in a possible stack overflow.
1914 The implementation now falls back to an uncached collation sequence lookup
1917 * CVE-2013-4788 The pointer guard used for pointer mangling was not
1918 initialized for static applications resulting in the security feature
1919 being disabled. The pointer guard is now correctly initialized to a
1920 random value for static applications. Existing static applications need
1921 to be recompiled to take advantage of the fix (bug 15754).
1923 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
1924 to the d_name member of struct dirent, or omit the terminating NUL
1925 character. (Bugzilla #14699).
1927 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
1928 aligned_alloc functions could allocate too few bytes or corrupt the
1929 heap when passed very large allocation size values (Bugzilla #15855,
1932 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
1933 for AF_INET6 has been fixed (Bugzilla #16072).
1935 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
1936 pap_CW, quz_PE, the_NP.
1938 * Substantially revised locales: gd_GB, ht_HT
1940 * The LC_ADDRESS field was updated to support country_car for almost all
1943 * ISO 1427 definitions were updated.
1945 * ISO 3166 definitions were updated.
1947 * The localedef utility now supports --big-endian and --little-endian
1948 command-line options to generate locales for a different system from that
1949 for which the C library was built.
1951 * Binary locale files now only depend on the endianness of the system for
1952 which they are generated and not on other properties of that system. As a
1953 consequence, binary files generated with new localedef may be incompatible
1954 with old versions of the GNU C Library, and binary files generated with
1955 old localedef may be incompatible with this version of the GNU C Library,
1956 in the following circumstances:
1958 + Locale files may be incompatible on m68k systems.
1960 + Locale archive files (but not separate files for individual locales) may
1961 be incompatible on systems where plain "char" is signed.
1963 * The configure option --disable-versioning has been removed. Builds with
1964 --disable-versioning had not worked for several years.
1966 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
1967 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
1969 * SystemTap probes for malloc have been introduced.
1971 * SystemTap probes for slow multiple precision fallback paths of
1972 transcendental functions have been introduced.
1974 * Support for powerpc64le has been added.
1976 * The soft-float powerpc port now supports e500 processors.
1978 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
1980 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
1981 set of header declarations that are enabled by default, even when other
1982 feature test macros or compiler options such as -std=c99 would otherwise
1983 disable some of those declarations.
1985 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
1986 conflict with POSIX. The libbsd-compat library (which was a dummy library
1987 that did nothing) has also been removed.
1989 * Preliminary documentation about Multi-Thread, Async-Signal and
1990 Async-Cancel Safety has been added.
1992 * Change of ABI data structures for s390 and s390x:
1993 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
1994 allow for future hardware extensions. All library functions that accept or
1995 return these structures were versioned in order to provide backwards
1996 compatibility with existing code. However, not all cases can be handled
1997 with interface versioning. If an application embeds either structure into
1998 another structure and that structure is passed to another compilation unit
1999 which expects the newer larger-sized object then any access to the new
2000 fields will result in undefined behaviour. Similarly any access to fields
2001 that were moved by the enlarging of the structures will cause undefined
2002 behaviour. To fix the undefined behaviour all objects that are part of the
2003 final in-memory image must agree on the size of structures, and this may
2004 require recompilation.
2008 * The following bugs are resolved with this release:
2010 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
2011 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
2012 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
2013 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
2014 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
2015 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
2016 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
2017 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
2018 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
2019 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
2020 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
2021 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
2022 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
2025 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
2026 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
2027 Distributions can re-enable building and using pt_chown via the new configure
2028 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
2029 considerable security risks and should only be used if the distribution
2030 understands and accepts the risks.
2032 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
2035 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
2036 fixed (Bugzilla #15330).
2038 * Add support for calling C++11 thread_local object destructors on thread
2039 and program exit. This needs compiler support for offloading C++11
2040 destructor calls to glibc.
2042 * Improved worst case performance of libm functions with double inputs and
2045 * Support for priority inherited mutexes in pthread condition variables on
2046 non-x86 architectures.
2048 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
2050 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
2052 * Optimized string functions for ARM. Implemented by Will Newton and
2055 * Optimized libm functions for SPARC. Implemented by David S. Miller.
2057 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
2060 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
2061 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
2063 * Added a benchmark framework to track performance of functions in glibc.
2065 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
2066 It is based on draft TS 18661 and currently enabled as a GNU extension.
2068 * On Linux, the clock function now uses the clock_gettime system call
2069 for improved precision, rather than old times system call.
2071 * Added support for version-3 tz format files. This is needed when using
2072 the tz database release 2013e or later, and affects a few unusual cases --
2073 currently only TZ='America/Godthab' for time stamps after 2037.
2075 * Added new API functions pthread_getattr_default_np and
2076 pthread_setattr_default_np to get and set the default pthread
2077 attributes of a process.
2079 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
2080 This may improve lock scaling of existing programs on TSX capable systems.
2081 When the --enable-lock-elision=yes parameter is specified at configure
2082 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
2085 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
2086 availability). Implemented by Ryan S. Arnold.
2088 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
2092 * The following bugs are resolved with this release:
2094 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
2095 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
2096 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
2097 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
2098 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
2099 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
2100 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
2101 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
2102 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
2103 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
2104 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
2105 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
2106 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
2107 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
2108 14879, 14889, 14893, 14898, 14914.
2110 * Optimization of memcpy for MIPS.
2112 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
2113 EMFILE has been fixed (Bugzilla #14889).
2115 * The add-on ports collection is now distributed in the "ports" subdirectory
2116 of the main GNU C Library distribution, rather than separately.
2118 * Port to ARM AArch64 contributed by Linaro.
2120 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
2121 Optimized versions of memcpy, memset, and memcmp added for System z10 and
2123 Implemented by Andreas Krebbel.
2125 * The new function secure_getenv allows secure access to the environment,
2126 returning NULL if running in a SUID/SGID process. This function replaces
2127 the internal function __secure_getenv.
2129 * SystemTap static probes have been added into the dynamic linker.
2130 Implemented by Gary Benson.
2132 * Optimizations of string functions strstr, strcasestr and memmem.
2133 Implemented by Maxim Kuvyrkov.
2135 * The minimum Linux kernel version that this version of the GNU C Library
2136 can be used with is 2.6.16.
2138 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
2139 powerpc POWER7. Implemented by Will Schmidt.
2141 * New configure option --disable-nscd builds the C library such that it
2142 never attempts to contact the Name Service Caching Daemon (nscd).
2143 New configure option --disable-build-nscd avoids building nscd itself;
2144 this is the default if --disable-nscd is used.
2146 * Improved support for cross-compilation, including cross-testing and
2147 bootstrap builds without a previously built glibc.
2149 * Several testsuite tests are now able to test multiple IFUNC variants of an
2150 interface, rather than just testing the one that would be chooen by
2153 * New configure options --with-bugurl and --with-pkgversion, for
2154 distributors to use to embed their bug-reporting and package version
2155 information in --help and --version output.
2157 * The ttyname and ttyname_r functions on Linux now fall back to searching for
2158 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
2159 allows creation of chroots without the procfs mounted on /proc.
2161 * The `crypt' function now fails if passed salt bytes that violate the
2162 specification for those values. On Linux, the `crypt' function will
2163 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
2164 enabled, and fail on encrypted strings using the MD5 or DES algorithm
2165 when the mode is enabled.
2167 * The `clock_*' suite of functions (declared in <time.h>) is now available
2168 directly in the main C library. Previously it was necessary to link with
2169 -lrt to use these functions. This change has the effect that a
2170 single-threaded program that uses a function such as `clock_gettime' (and
2171 is not linked with -lrt) will no longer implicitly load the pthreads
2172 library at runtime and so will not suffer the overheads associated with
2173 multi-thread support in other code such as the C++ runtime library.
2175 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
2180 * The following bugs are resolved with this release:
2182 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
2183 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
2184 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
2185 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
2186 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
2187 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
2188 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
2189 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
2190 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
2191 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
2192 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
2193 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
2194 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
2195 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
2196 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
2197 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
2198 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
2199 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
2200 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
2201 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
2202 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
2203 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
2206 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
2207 configuring glibc with:
2208 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
2209 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
2210 Implemented by H.J. Lu.
2214 + define static_assert
2216 + do not declare gets
2218 + declare at_quick_exit and quick_exit also for ISO C11
2220 + aligned_alloc. NB: The code is deliberately allows the size parameter
2221 to not be a multiple of the alignment. This is a moronic requirement
2222 in the standard but it is only a requirement on the caller, not the
2225 + timespec_get added
2227 + uchar.h support added
2229 + CMPLX, CMPLXF, CMPLXL added
2231 Implemented by Ulrich Drepper.
2233 * Support for the IA-64 has been moved to ports.
2235 * Remove support for anything but ELF binary format
2237 * Checking versions of poll, ppoll added.
2238 Implemented by Ulrich Drepper.
2240 * More generic and 64-bit performance optimizations to math functions.
2241 Implemented by Ulrich Drepper.
2243 * New configure option --enable-obsolete-rpc makes the deprecated RPC
2244 headers and functions available at compile time as they were before
2245 version 2.14. This option will be removed at some time in the future
2246 after the TI-RPC library becomes fully sufficient for the needs of
2247 existing applications.
2249 * Compatibility code for Linux kernel versions before 2.4 has been removed.
2250 Note that glibc is not expected to work with any Linux kernel version
2253 * New header <sys/auxv.h> and function getauxval allowing easy access to
2254 the AT_* key-value pairs passed from the Linux kernel. The header also
2255 defines the HWCAP_* bits associated with the AT_HWCAP key.
2257 * New locales: mag_IN
2259 * New configure option --enable-systemtap builds SystemTap static probes
2260 into libc for setjmp and longjmp and into libpthread for various operations.
2261 So far the setjmp/longjmp probes and some of the libpthread probes are
2262 provided only for i*86 and x86_64.
2263 Implemented by Roland McGrath and Rayson Ho.
2265 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
2267 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
2270 * More optimized functions for SPARC. Implemented by David S. Miller.
2272 * Improved support for cross-compilation, especially bootstrap builds
2273 without a previously built glibc.
2275 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
2276 Chris Metcalf from Tilera.
2278 * Support for the old ARM ABI has been removed from ports. Only the EABI is
2279 now supported for ARM processors.
2281 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
2282 as the name of the dynamic linker, to distinguish it from the
2283 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
2285 * Support for CRIS has been removed from ports.
2287 * A new class of installed header has been documented for low-level
2288 platform-specific functionality. PowerPC added the first instance with a
2289 function to provide time base register access. Contributed by Tulio
2290 Magno Quites Machado Filho.
2292 * ix86 configurations now install header files that are consistent with
2293 what x86-64 configurations install. These same header files can be used
2294 for -m32, -m64, or -mx32 builds.
2295 Contributed by H.J. Lu.
2297 * Math library bug fixes. A thorough audit of all open math library bugs was
2298 conducted by Joseph Myers. Significant progress was made on many math
2299 library bugs resulting in more accurate exceptions and function results.
2300 Many thanks to all those that contributed including Andreas Jaeger for his
2301 patch review and work on the x87 trigonometric instruction issues.
2303 * Timezone data is no longer installed. Timezone-related binaries and scripts
2304 will continue to be installed. Users should obtain their timezone data from
2305 their distribution provider or from the tzdata package at
2306 <ftp://munnari.oz.au/pub/>.
2310 * The following bugs are resolved with this release:
2312 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
2313 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
2314 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
2315 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
2316 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
2317 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
2318 13484, 13506, 13515, 13523, 13524, 13538, 13540
2320 * New program pldd to list loaded object of a process
2321 Implemented by Ulrich Drepper.
2323 * Add nss_db support back to glibc. No more dependency on Berkeley db
2324 and support for initgroups lookups.
2325 Implemented by Ulrich Drepper.
2327 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
2328 Contributed by HJ Lu.
2330 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
2331 Contributed by HJ Lu.
2333 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
2334 on x86-32 and x86-64.
2335 Contributed by Liubov Dmitrieva.
2337 * Optimized strchr and strrchr for SSE on x86-32.
2338 Contributed by Liubov Dmitrieva.
2340 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
2341 for x86-64 and x86-32.
2342 Contributed by Liubov Dmitrieva.
2344 * New interfaces: scandirat, scandirat64
2345 Implemented by Ulrich Drepper.
2347 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
2348 Implemented by Ulrich Drepper.
2350 * nscd now also caches the netgroup database.
2351 Implemented by Ulrich Drepper.
2353 * Integrate libm with gcc's -ffinite-math-only option.
2354 Implemented by Ulrich Drepper.
2356 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
2357 to math functions. Implemented by Ulrich Drepper.
2359 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
2360 Implemented by Ulrich Drepper.
2362 * New Linux interfaces: process_vm_readv, process_vm_writev
2364 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
2365 Implemented by Ulrich Drepper.
2367 * Optimized nearbyint and strcasecmp for PPC.
2368 Implemented by Adhemerval Zanella.
2370 * New locales: bho_IN, unm_US, es_CU, ta_LK
2374 * The following bugs are resolved with this release:
2376 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
2377 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
2378 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
2379 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
2380 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
2381 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
2382 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
2383 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
2384 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
2385 12795, 12811, 12813, 12814, 12841
2387 * The RPC implementation in libc is obsoleted. Old programs keep working
2388 but new programs cannot be linked with the routines in libc anymore.
2389 Programs in need of RPC functionality must be linked against TI-RPC.
2390 The TI-RPC implementation is IPv6 enabled and there are other benefits.
2392 Visible changes of this change include (obviously) the inability to link
2393 programs using RPC functions without referencing the TI-RPC library and the
2394 removal of the RPC headers from the glibc headers.
2395 Implemented by Ulrich Drepper.
2397 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
2398 syncfs, setns, sendmmsg
2400 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
2401 yue_HK, lij_IT, mhr_RU
2403 * New encodings: CP770, CP771, CP772, CP773, CP774
2405 * New program sotruss to trace calls through PLTs
2406 Implemented by Ulrich Drepper.
2408 * The malloc hook implementation is marked deprecated and will be removed
2409 from the default implementation in the next version. The design never
2410 worked ever since the introduction of threads. Even programs which do
2411 not create threads themselves can use multiple threads created internally.
2415 * The following bugs are resolved with this release:
2417 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
2418 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
2419 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
2420 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
2423 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
2425 * POWER7 optimizations: memset, memcmp, strncmp
2427 * New optimized string functions for x86-64: strnlen (SSE2),
2428 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
2429 Implemented by Ulrich Drepper.
2433 * The following bugs are resolved with this release:
2435 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
2436 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
2437 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
2438 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
2439 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
2440 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
2441 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
2442 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
2444 * New interfaces: pthread_getname_np, pthread_setname_np
2446 * New Linux interface: recvmmsg
2448 * STT_GNU_IFUNC implemented for Sparc by David Miller.
2450 * The dynamic linker now recognizes supported ABI versions from the
2451 EI_ABIVERSION field in the ELF header.
2452 Implemented by Ulrich Drepper.
2454 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
2455 will not be used to fill in password fields in the passwd.byname replies.
2456 Instead it is used to synthesize the shadow.byname table, should it be
2457 missing. This is a useful mode in some installations involving Solaris.
2458 Implemented by Ulrich Drepper.
2460 * New locales: kok_IN, sq_MK, cv_RU
2464 * The following bugs are resolved with this release:
2466 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
2467 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
2468 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
2469 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
2470 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
2471 10789, 10817, 10823, 10840, 10847
2473 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
2475 Implemented by Ulrich Drepper.
2477 * Checking version of longjmp added that fails if an uninitialized stack
2478 frame would be created. Implemented by Ulrich Drepper.
2480 * STT_GNU_IFUNC is now supported in static executables.
2481 Implemented by H.J. Lu.
2483 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
2485 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
2486 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
2487 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
2488 Contributed by H.J. Lu.
2490 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
2491 Implemented by Ulrich Drepper.
2493 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
2495 Contributed by H.J. Lu.
2497 * Support for fma instruction in AVX on x86-64.
2498 Implemented by H.J. Lu and Ulrich Drepper.
2500 * AVX support in x86-64 auditing support in ld.so.
2501 Implemented by H.J. Lu.
2503 * STB_GNU_UNIQUE support added.
2504 Implemented by Ulrich Drepper.
2506 * Implement second fallback mode for optimized DNS lookup for even more
2507 broken environments. If two requests from the same port are not
2508 handled correctly close the socket and open a new one before sending
2509 the second request. The 'single-request-reopen' option in /etc/resolv.conf
2510 can be used to select this mode right away, instead of rediscovering the
2511 necessity is every process again.
2512 Implemented by Ulrich Drepper.
2514 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
2515 Implemented by Adam Tkac.
2517 * Optimized iconv conversions for S390x.
2518 Implemented by Andreas Krebbel.
2520 * Using condvars with PI mutexes is now more efficient due to kernel
2521 support for requeueing to PI futexes. NPTL support added for x86-64.
2522 Implemented by Ulrich Drepper.
2524 * New locales: ps_AF, my_MM
2528 * The following bugs are resolved with this release:
2530 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
2531 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
2532 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
2533 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
2534 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
2536 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
2537 Implemented by Ulrich Drepper.
2539 * New Linux interfaces: accept4, fallocate, fallocate64.
2540 Implemented by Ulrich Drepper.
2542 * Correct declarations of string function when used in C++ code. This
2543 could lead to compile errors for invalid C++ code.
2545 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
2548 * New POSIX 2008 interface: psiginfo
2549 Implemented by Ulrich Drepper.
2551 * New ISO C++1x interfaces: quick_exit, at_quick_exit
2552 Implemented by Ulrich Drepper.
2554 * Support for selecting between multiple function definitions at runtime
2555 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
2557 * The libcrypt library can now use the hash function implementations in
2558 NSS. Implemented by Ulrich Drepper.
2560 * The malloc implementation can be compiled to be less memory efficient
2561 but higher performing in multi-threaded programs.
2562 Implemented by Ulrich Drepper.
2564 * New locales: nan_TW@latin, ks_IN
2566 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
2567 Implemented by Ulrich Drepper.
2569 * Extended printf hook support. It is possible to use user-defined types
2570 and extend existing format specifiers.
2571 Implemented by Ulrich Drepper.
2573 * Handling for group shadow files has been added.
2574 Implemented by Ulrich Drepper.
2576 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
2577 servers (the case, e.g., for some people using the built-in DNS
2578 server in ADSL modems/routers). There is a once-per-process timeout
2579 in case of a broken server. To avoid it, users can run nscd or put
2580 'options single-request' in /etc/resolv.conf.
2581 Implemented by Ulrich Drepper.
2585 * The following bugs are resolved with this release:
2587 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
2588 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
2589 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
2590 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
2591 6968, 6974, 6980, 6995, 7008, 7009, 7029
2593 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
2594 up at the same time. Implemented by Ulrich Drepper.
2596 * TLS descriptors for LD and GD on x86 and x86-64.
2597 Implemented by Alexandre Oliva.
2599 * getaddrinfo now handles DCCP and UDPlite.
2600 Implemented by Ulrich Drepper.
2602 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
2603 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
2604 Implemented by Ulrich Drepper.
2606 * New implementation of memmem, strstr, and strcasestr which is O(n).
2607 Implemented by Eric Blake.
2609 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
2611 * Implement "e" option for popen to open file descriptor with the
2612 close-on-exec flag set. Implemented by Ulrich Drepper.
2614 * Implement "b" mode for fmemopen. In this mode writes writes don't
2615 implicitly add a NUL byte and seeks from the end of the buffer really
2616 use the buffer end, not the string length as the basis.
2617 Implemented by Ulrich Drepper.
2619 * Many functions, exported and internal, now atomically set the close-on-exec
2620 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
2622 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
2624 Implemented by Pravin Satpute.
2626 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
2630 * The following bugs are resolved with this release:
2632 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
2633 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
2634 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
2635 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
2636 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
2637 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
2638 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
2640 * New locales: bo_CN, bo_IN, shs_CA.
2642 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
2644 * Sorting rules for some Indian languages (Devanagari and Gujarati).
2645 Implemented by Pravin Satpute.
2647 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
2649 * nscd caches now all timeouts for DNS entries
2650 Implemented by Ulrich Drepper.
2652 * nscd is more efficient and wakes up less often.
2653 Implemented by Ulrich Drepper.
2655 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
2656 vdprintf, and obstack_vprintf.
2657 Implemented by Jakub Jelinek.
2659 * Faster memset for x86-64.
2660 Implemented by Harsha Jagasia and H.J. Lu.
2662 * Faster memcpy on x86.
2663 Implemented by Ulrich Drepper.
2665 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
2666 Implemented by Ulrich Drepper.
2668 * Faster sqrt and sqrtf implemention for some PPC variants.
2669 Implemented by Steven Munroe.
2673 * The following bugs are resolved with this release:
2675 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
2676 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
2677 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
2678 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
2679 5071, 5103, 5104, 5112, 5113, 5184, 5186
2681 * More checking functions: fread, fread_unlocked, open*, mq_open.
2682 Implemented by Jakub Jelinek and Ulrich Drepper.
2684 * Extend fortification to C++. Implemented by Jakub Jelinek.
2686 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
2687 by not recognizing 'a' as a modifier when those specs are requested.
2688 Implemented by Jakub Jelinek.
2690 * PPC optimizations to math and string functions.
2691 Implemented by Steven Munroe.
2693 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
2694 options to be passed. Implemented by Ulrich Drepper.
2696 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
2698 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
2699 Implemented by Ulrich Drepper.
2701 * Handle private futexes in the NPTL implementation.
2702 Implemented by Jakub Jelinek and Ulrich Drepper.
2704 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
2705 Implemented by Roland McGrath and Ulrich Drepper.
2707 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
2709 * SHA-256 and SHA-512 based password encryption.
2710 Implemented by Ulrich Drepper.
2712 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
2713 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
2716 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
2717 Implemented by Ulrich Drepper.
2721 * The following bugs are resolved with this release:
2723 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
2724 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
2725 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
2726 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
2727 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
2728 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
2729 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
2732 * New Linux interfaces: epoll_pwait, sched_getcpu.
2734 * New generic interfaces: strerror_l.
2736 * nscd can now cache the services database. Implemented by Ulrich Drepper.
2740 * The following bugs are resolved with this release:
2742 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
2743 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
2744 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
2745 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
2746 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
2747 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
2748 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
2749 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
2750 3225, 3251, 3252, 3253, 3273
2752 * For Linux, the sorting of addresses returned by getaddrinfo now also
2753 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
2754 Implemented by Ulrich Drepper.
2756 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
2757 Implemented by Ulrich Drepper.
2759 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
2761 * New iconv module for MIK. Contributed by Alexander Shopov.
2763 * For sites with broken group and/or passwd database, the auto-propagate
2764 option of nscd can prevent creating ID lookup entries from the results
2765 of a name lookup and vice versa. This usually is no problem but some
2766 site might have problems with the default behavior.
2767 Implemented by Ulrich Drepper.
2769 * Iterating over entire database in NIS can be slow. With the
2770 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
2771 to trade time for memory. The entire database will be read at once.
2772 Implemented by Ulrich Drepper.
2774 * The interfaces introduced in RFC 3542 have been implemented by
2777 * Support for the new ELF hash table format was added by Ulrich Drepper.
2779 * Support for priority inheritance mutexes added by Jakub Jelinek and
2782 * Support for priority protected mutexes added by Jakub Jelinek.
2784 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
2785 or_IN, csb_PL, fy_NL, sr_ME.
2789 * More overflow detection functions.
2791 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
2792 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
2794 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
2795 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
2796 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
2797 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
2798 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
2799 by Masahide Washizawa.
2801 * It is now possible to install audit libraries for the dynamic linker using
2802 LD_AUDIT. Implemented by Ulrich Drepper.
2804 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
2805 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
2806 For a libc and libpthread that works well on Linux 2.4 kernels, we
2807 recommend using the stable 2.3 branch.
2809 * The new function open_wmemstream acts like open_memstream,
2810 but uses a wchar_t wide character buffer.
2812 * The new function ppoll is an improved version of poll, similar to pselect.
2814 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
2815 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
2816 renameat, unlinkat, linkat, symlinkat, readlinkat.
2818 * New Linux kernel system calls: unshare,
2819 inotify_init, inotify_add_watch, inotify_rm_watch.
2821 * The euidaccess function is now also known by the alias eaccess,
2822 for compatibility with some other systems.
2824 * Timezone data updated to 2006b version.
2828 * The following bugs are resolved with this release:
2830 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
2831 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
2832 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
2833 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
2834 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
2835 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
2837 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2839 * As of this release, GCC 4 can be used to compile the C Library.
2841 * Timezone data updated to 2005m version.
2845 * The following bugs are resolved with this release:
2847 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
2848 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
2849 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
2850 777, 787, 821, 822, 823, 825
2852 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2856 * Support for RFC 3678. Real implementations exist only for Linux so far.
2857 Implemented by Ulrich Drepper.
2859 * nscd can now cache entries persistently. Expiring entries are reloaded.
2860 For speedups the cache can be shared in memory with client processes.
2861 Implemented by Ulrich Drepper.
2863 * nscd can now perform SELinux checks.
2864 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
2866 * getaddrinfo queries are now cached. Canonical name lookup is performed
2868 Implemented by Ulrich Drepper.
2870 * The nothrow function attribute is used when headers are used by gcc when
2871 compiling C code. This can avoid significant amounts of exception
2874 * The malloc functions perform more error checking and are stricter when
2875 it comes to reacting on errors. The default action is to terminate
2876 the process after showing an error message. Implemented by Ulrich Drepper.
2878 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
2879 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
2881 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
2882 namespaces using the new function dlmopen(). This feature is of course,
2883 like most other dynamic loading functionality, not available in statically
2884 linked applications. Implemented by Ulrich Drepper.
2886 * Low-overhead boundary checking variants of string and some stdio functions
2887 were added. These are to be used in conjunction with a gcc patch by
2888 Jakub Jelinek which adds calls to these functions if possible.
2889 Implemented by Jakub Jelinek and Ulrich Drepper.
2891 * Old code for several operating systems and machine architectures that
2892 have not been in working condition in a long time have been removed from
2893 the main source tree maintained by the GNU C Library's maintainers.
2894 These files are now reside in the separate `ports' source module
2895 that is usable as an add-on when building the library.
2899 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
2900 interrogate the dynamic linker, compatible with the Solaris interface.
2902 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
2903 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
2905 * getifaddrs now uses the netlink interface on Linux to get its information.
2906 Implemented by Thorsten Kukuk.
2908 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
2909 Implemented by Ulrich Drepper.
2911 * support for non-executable stacks on x86 has been added. Changes mostly
2914 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
2917 * getaddrinfo now performs destination address selection according to
2922 * Thread-safe interfaces for many functions that access locale data
2923 were added in version 2.3, but these features were omitted from NEWS.
2924 Many functions have variants with an `_l' suffix that take a `locale_t'
2925 object as a parameter rather than consulting the current locale.
2926 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
2927 create and maintain `locale_t' objects. Additionally, the new function
2928 `uselocale' sets "the current locale" (as used by functions not so
2929 parameterized) set for an individual thread. These features were added
2930 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
2932 * The functions getresuid, getresgid, setresuid, and setresgid, which
2933 have long been available on Linux, are now declared in <unistd.h>
2934 and are now also available on the Hurd.
2936 * ELF thread-local storage support (TLS) now works on x86-64.
2938 * The new dynamic string token $LIB is expanded in shared library names.
2939 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
2941 * Aldy Hernandez contributed complete software floating point support for
2942 PowerPC machines with no FPU.
2944 * fexecve is implemented on Linux.
2946 * The `btowc' function should work at least twice as fast due to
2947 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
2949 * With approriate thread add-ons cancelable functions are now implemented
2950 in libc.so as well. No need to call the function in libpthread. This
2951 change allowed to finally disable the incorrect and expensive handling
2952 of weak definition in ld.so.
2954 * Yet more PLT entries in libc.so have been removed. We finally arrived
2955 at the bare minimum. Startup times improved appropriately.
2957 * Support for the new Linux/x86 system call interface was added. The
2958 AT_SYSINFO auxiliary vector entry is recognized and handled.
2962 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
2965 * iconv (the program and the interface) now accepts empty names (excluding
2966 options like //TRANSLIT) to mean "use charset of current locale".
2968 * localedef can now transliterate characters in strings which are not in
2969 the provided charmap. The information from the input locale is used.
2971 * Prelinking support was added for ELF targets. This requires additional
2972 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
2974 * Read-only stdio streams now use mmap to speed up operation by eliminating
2975 copying and buffer underflows. To use add 'm' to the mode string of
2976 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
2978 * The malloc functions were completely rewritten by Wolfram Gloger based
2979 on Doug Lea's malloc-2.7.0.c.
2981 * Isamu Hasegawa contributed a completely new and POSIX-conformant
2982 implementation of regex.
2984 * Bruno Haible upgraded the iconv and locale implementation to support
2987 * Contents of the LC_* and LANG environment variables in the CEN style are
2988 not recognized anymore. It never was used. Change by Ulrich Drepper.
2990 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
2991 thread-local storage (TLS) ABI on some platforms.
2992 Changes by Ulrich Drepper. SH support by Kaz Kojima.
2994 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
2995 EUC-JISX0213, and TSCII.
2997 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
2998 BSD-compatible interface for getting all network interface addresses.
2999 Implementation for IPv4 by Roland McGrath.
3001 * Loading of locale data is faster due to the introduction of a locale
3002 archive. Implemented by Roland McGrath and Ulrich Drepper.
3004 * Startup times are significantly reduced by not using exported functions
3005 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
3008 * Steven Munroe contributed a port to PowerPC64/Linux.
3012 * The Hurd now uses the GNU libio implementation of stdio rather than the
3013 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
3015 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
3016 with the same behavior as the Linux system call of the same name.
3020 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
3021 128-bit long double format.
3023 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
3024 IBM1161, and IBM1162 charsets.
3026 * Andreas Jaeger contributed a port to x86-64/Linux.
3028 * Peter Bruin contributed a port to PowerPC/Hurd.
3030 * libc functions using I/O streams now can handle wide-oriented streams
3033 * optimizations in the dynamic linker. Binaries created by recent binutils
3034 versions start up quicker due to reduced time spent on relocations.
3036 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
3040 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
3041 asinh, atanh, j0 for the 128-bit long double format.
3043 * Bruno Haible updated all the code handling Unicode in some form to
3044 support Unicode 3.1.
3046 * Speed of regex for single-byte locales is back to previous levels.
3047 Patch by Isamu Hasegawa.
3049 * Alpha, SPARC, and IA-64 now also using floating stacks.
3051 * Startup time of internationalized applications greatly improved through
3052 iconv cache. Use iconvconfig to generate the cache file.
3053 Contributed by Ulrich Drepper.
3055 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
3056 severe performance problems. Patch by David Mosberger.
3058 * The Hurd port got a lot more functionality like AIO, various stdio
3059 extensions, etc. Mainly done by Roland McGrath.
3061 * mtrace can now lookup symbols in shared libraries.
3065 * Intel's IA-64 math library is largely integrated. It provides fast and
3066 accurate implementatations for most basic and standard math functions
3067 in float, double, and long double format.
3069 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
3070 and asin for the 96-bit long double format and asin, log, tan for the
3071 128-bit long double format.
3073 * The beginning of a last-bit accurate math library by IBM Haifa were added.
3074 The basic double functions exist today. Contributed by Abraham Ziv
3075 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
3076 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
3078 * An asynchronous name lookup library was added. The interface is designed
3079 after POSIX AIO. The proposal was circulated beforehand to get comments.
3080 No negative ones came in. Implemented by Ulrich Drepper.
3082 * Port to S390/64bit contributed by Martin Schwidefsky
3083 <schwidefsky@de.ibm.com>.
3085 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
3086 of functions for Linux/IA-64.
3088 * The RPC code is now thread safe. Threads can now use the same service
3089 of different services at the same time. Patch by Eric Norum
3090 <eric.norum@usask.ca> with some help by Ulrich Drepper.
3092 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
3093 family of functions for Linux/S390.
3095 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
3096 of functions for Linux/x86.
3098 * Port to Linux/CRIS contributed by Axis Communications.
3102 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
3103 we can now check for namespace violations and missing declarations. The
3104 result is that almost all headers are now Unix-compliant (as defined in
3105 the upcoming XPG6). The negative side is that some programs might need
3106 corrections, too, if they depend on the incorrect form of the headers in
3107 previous versions which defined too many symbols and included too many
3110 * regex now handles multibyte character sets correctly.
3111 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
3113 * iconv (the program) does now conform to the upcoming XPG6 and handles
3114 charmaps. Instead of the charset names the path of charmaps can be
3115 provided and the conversion happens based on this data.
3116 Contributed by Ulrich Drepper.
3118 * The locale program now provides detailed information about the installed
3123 only lists the names of the supported locales
3127 provides details such as country, language, and codeset name.
3128 Contributed by Ulrich Drepper.
3132 * The gencat program now parses the input file according to the charset
3133 selected by the LC_CTYPE category. This is important for stateful
3134 character sets. To make generating catalogs easier there is a way
3135 to overwrite the charset selected by the locale: before the first
3136 message or $ quote line the catalog can contain a line like
3138 $ codeset=ISO-8859-2
3140 to select the charset (ISO-8859-2 in this case).
3142 Implemented by Shinya Hanataka and Ulrich Drepper.
3144 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
3145 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
3146 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
3148 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
3149 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
3151 * The LANGUAGE environment variable is now ignored unless the locale is
3152 changed from the default "C" locale.
3154 * The usual bug fixes.
3158 * Greg McGary added runtime support for bounds checking using gcc's
3159 new -fbounded-pointers option. ix86 target is complete. PowerPC
3162 * Thorsten Kukuk added secure mode support to nscd.
3164 * The Berkeley db libraries have been removed.
3166 Related, the nss_db module is now in a separate package since it
3167 obviously requires a database library being available.
3169 * Wide character I/O streams implemented by Ulrich Drepper.
3171 * Functions from the extended socket API added by Ulrich Drepper.
3173 * Functions feenableexcept and fedisableexcept to control the
3174 behaviour of individual exceptions have been added by Andreas Jaeger.
3176 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
3178 * The resolver code has been updated from bind 8.2.3-T5B which supports
3179 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
3182 This change could in some situations effect backward compatibility. Since
3183 now `_res' is a thread-local instead of a global variable, modifying it
3184 in one thread does not have any effect in other threads.
3186 The resolver library was also extended to allow IPv6 as the transport
3187 protocol for the requests. This work was done by Stig Venaas.
3189 * Compatibility code for K&R C compilers has been removed from the
3190 header files. A ISO C compiler is needed to use the library
3191 (conforming to either C89 or C99 standard).
3193 * Complete rewrite of the localedef program to support multibyte character
3194 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
3195 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
3196 Implemented by Ulrich Drepper.
3198 Bruno Haible significantly improved the generation and use of the data
3199 structures for the wide character tables.
3201 * Plural handling in gettext implemented by Ulrich Drepper.
3203 * The utmp daemon has been removed.
3205 * The port to MIPS-Linux has been finished by Andreas Jaeger.
3207 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
3210 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
3212 * POSIX barriers implemented by Kaz Kylheku.
3214 * POSIX spawn function family implemented by Ulrich Drepper.
3216 * POSIX spinlocks are now available.
3218 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
3220 * the configure option --enable-kernel=X.Y.Z allows to strip out
3221 compatibility for kernel versions before X.Y.Z. This is currently only
3222 implemented for Linux.
3224 * the sockaddr_in6 structure changed. The IPv6 working group added a new
3225 field sin6_scope_id. This means that all programs using IPv6 should be
3226 recompiled. Don't expect binary compatibility with previous glibc
3229 * various conversion modules for IBM character sets contributed by
3232 * IA-64 port by Jes Sorensen and HJ Lu.
3246 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
3248 * New xdr functions are added; some rpc functions are now 64bit clean.
3250 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
3252 * Fixed known incompatibilities with glibc 2.0.
3254 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
3256 * Optimized a number of functions (especially the ELF dynamic loader).
3258 * Update timezone data files.
3260 * lots of charmaps corrections
3262 * some new locale definitions and charmaps
3267 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
3268 conform to POSIX member type requirements. Symbol versions have been
3269 adjusted as needed within the library, and for direct use by applications,
3270 but there is potential for problems if third-party libraries use
3271 struct timeval as part of their interface. This does not present
3272 a problem for X and other "essential" system libraries.
3274 * An additional locale model to support C++ Standard Library locale
3275 model and probably more was implemented by Ulrich Drepper.
3277 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
3280 * Miles Bader provided the `argp' function family to support hierachical
3281 command line argument parsing, layered on top of getopt.
3283 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
3285 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
3288 * scanf recognizes the %a and %A format for scanning floating point numbers.
3290 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
3291 information and interfaces for the available integer types.
3293 * about 130 new math functions were added to implement the ISO C9x math
3296 * the new header <complex.h> contains definitions of the complex math
3297 functions from ISO C 9X.
3299 * the new header <tgmath.h> defines generic macros to use complex or
3300 real valued functions.
3302 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
3304 * Andreas Jaeger provided a test suite for the math library.
3306 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
3308 * Ulrich Drepper added character set conversion functions (iconv).
3310 * Optimized string functions have been added.
3312 * The localedata addon is now part of glibc.
3314 * An implementation of profiling shared libraries was added by Ulrich Drepper.
3316 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
3317 daemon for NSS (nscd).
3319 Missing a better place here are some numbers on improvements. Under
3320 Linux 2.1.125 un-tar-ing the kernel sources takes
3324 using local files 12.19s 6.88s 22.91s
3326 using NIS 13.92s 8.91s 26.34s
3328 using NIS & nscd 10.37s 7.34s 25.30s
3330 using NIS+ 27.57s 30.37s 640.46s
3332 using NIS+ & nscd 10.25s 7.83s 26.51s
3334 using NIS & old nscd [1] 13.83s 8.32s 29.60s
3336 Keep in mind that non-namelookup related operations dominate above times.
3337 It was just a common complain that using NIS+ unpacking the kernel is
3340 [1] The old nscd implementation is not available anymore since it was
3341 distributed with glibc up to version 2.0.98 and thus is now replaced.
3343 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
3345 * Mark Kettenis provided a Hesiod NSS module.
3347 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
3348 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
3350 * rcmd can now handle netgroups (Dick Streefland).
3352 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
3355 * Support for the IPv6 protocol has been added to the socket API, as per the
3356 latest draft standards.
3358 * Support for Linux 2.2 has been added.
3360 * Interface changes relative to the latest 2.0.x release:
3361 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3362 addseverity NEW: Unix98
3363 alphasort64 NEW: LFS
3364 argp_err_exit_status NEW: argp, GNU ext
3365 argp_error NEW: argp, GNU ext
3366 argp_failure NEW: argp, GNU ext
3367 argp_help NEW: argp, GNU ext
3368 argp_parse NEW: argp, GNU ext
3369 argp_program_bug_address NEW: argp, GNU ext
3370 argp_program_version NEW: argp, GNU ext
3371 argp_program_version_hook NEW: argp, GNU ext
3372 argp_state_help NEW: argp, GNU ext
3373 argp_usage NEW: argp, GNU ext
3374 authdes_create NEW: Secure RPC
3375 authdes_getucred NEW: Secure RPC
3376 authdes_pk_create NEW: Secure RPC
3377 backtrace NEW: GNU ext.
3378 backtrace_symbols NEW: GNU ext.
3379 backtrace_symbols_fd NEW: GNU ext.
3381 cacosf NEW: ISO C 9x
3382 cacosh NEW: ISO C 9x
3383 cacoshf NEW: ISO C 9x
3384 cacoshl NEW: ISO C 9x
3385 cacosl NEW: ISO C 9x
3392 casinf NEW: ISO C 9x
3393 casinh NEW: ISO C 9x
3394 casinhf NEW: ISO C 9x
3395 casinhl NEW: ISO C 9x
3396 casinl NEW: ISO C 9x
3398 catanf NEW: ISO C 9x
3399 catanh NEW: ISO C 9x
3400 catanhf NEW: ISO C 9x
3401 catanhl NEW: ISO C 9x
3402 catanl NEW: ISO C 9x
3403 cbc_crypt NEW: Secure RPC
3407 ccoshf NEW: ISO C 9x
3408 ccoshl NEW: ISO C 9x
3414 cimagf NEW: ISO C 9x
3415 cimagl NEW: ISO C 9x
3416 clearerr_locked REMOVED
3417 clntunix_create NEW: sunrpc ext
3419 clog10 NEW: ISO C 9x
3420 clog10f NEW: ISO C 9x
3421 clog10l NEW: ISO C 9x
3431 cprojf NEW: ISO C 9x
3432 cprojl NEW: ISO C 9x
3434 crealf NEW: ISO C 9x
3435 creall NEW: ISO C 9x
3440 csinhf NEW: ISO C 9x
3441 csinhl NEW: ISO C 9x
3444 csqrtf NEW: ISO C 9x
3445 csqrtl NEW: ISO C 9x
3449 ctanhf NEW: ISO C 9x
3450 ctanhl NEW: ISO C 9x
3452 des_setparity NEW: Secure RPC
3453 ecb_crypt NEW: Secure RPC
3454 endutxent NEW: Unix98
3456 exp10f NEW: ISO C 9x
3457 exp10l NEW: ISO C 9x
3461 fattach NEW: STREAMS
3462 fdetach NEW: STREAMS
3466 feclearexcept NEW: ISO C 9x
3467 fegetenv NEW: ISO C 9x
3468 fegetexceptflag NEW: ISO C 9x
3469 fegetround NEW: ISO C 9x
3470 feholdexcept NEW: ISO C 9x
3472 feraiseexcept NEW: ISO C 9x
3473 ferror_locked REMOVED
3474 fesetenv NEW: ISO C 9x
3475 fesetexceptflag NEW: ISO C 9x
3476 fesetround NEW: ISO C 9x
3477 fetestexcept NEW: ISO C 9x
3478 feupdateenv NEW: ISO C 9x
3479 fflush_locked REMOVED
3483 fgets_unlocked NEW: GNU ext.
3484 fileno_locked REMOVED
3496 fputc_locked REMOVED
3497 fputs_unlocked NEW: GNU ext.
3498 fread_unlocked NEW: GNU ext.
3503 fstatvfs NEW: Unix98
3507 ftruncate64 NEW: LFS
3509 fwrite_unlocked NEW: GNU ext.
3510 gai_strerror NEW: IPv6
3514 getchar_locked REMOVED
3516 getdate_err NEW: Unix98
3517 getdate_r NEW: GNU ext.
3519 getnameinfo NEW: IPv6
3520 getnetname NEW: Secure RPC
3521 getpmsg NEW: STREAMS
3522 getpt NEW: Unix98 PTY
3523 getrlimit64 NEW: LFS
3524 getutxent NEW: Unix98
3525 getutxid NEW: Unix98
3526 getutxline NEW: Unix98
3527 glob64 NEW: GNU ext.
3528 globfree64 NEW: GNU ext.
3529 gnu_get_libc_release NEW: GNU ext.
3530 gnu_get_libc_version NEW: GNU ext.
3531 grantpt NEW: Unix98 PTY
3532 host2netname NEW: Secure RPC
3534 iconv_close NEW: iconv
3535 iconv_open NEW: iconv
3536 if_freenameindex NEW: IPv6
3537 if_indextoname NEW: IPv6
3538 if_nameindex NEW: IPv6
3539 if_nametoindex NEW: IPv6
3540 in6addr_any NEW: IPv6
3541 in6addr_loopback NEW: IPv6
3542 inet6_isipv4mapped NEW: IPv6
3543 isastream NEW: STREAMS
3544 iswblank NEW: GNU ext.
3545 key_decryptsession NEW: Secure RPC
3546 key_decryptsession_pk NEW: Secure RPC
3547 key_encryptsession NEW: Secure RPC
3548 key_encryptsession_pk NEW: Secure RPC
3549 key_gendes NEW: Secure RPC
3550 key_get_conv NEW: Secure RPC
3551 key_secretkey_is_set NEW: Secure RPC
3552 key_setnet NEW: Secure RPC
3553 key_setsecret NEW: Secure RPC
3554 llrint NEW: ISO C 9x
3555 llrintf NEW: ISO C 9x
3556 llrintl NEW: ISO C 9x
3557 llround NEW: ISO C 9x
3558 llroundf NEW: ISO C 9x
3559 llroundl NEW: ISO C 9x
3564 lrintf NEW: ISO C 9x
3565 lrintl NEW: ISO C 9x
3566 lround NEW: ISO C 9x
3567 lroundf NEW: ISO C 9x
3568 lroundl NEW: ISO C 9x
3570 makecontext NEW: Unix98
3571 mempcpy NEW: GNU ext.
3574 modify_ldt NEW: kernel
3578 nearbyint NEW: ISO C 9x
3579 nearbyintf NEW: ISO C 9x
3580 nearbyintl NEW: ISO C 9x
3581 netname2host NEW: Secure RPC
3582 netname2user NEW: Secure RPC
3583 nexttoward NEW: ISO C 9x
3584 nexttowardf NEW: ISO C 9x
3585 nexttowardl NEW: ISO C 9x
3589 passwd2des NEW: Secure RPC
3591 pow10f NEW: GNU ext.
3592 pow10l NEW: GNU ext.
3595 printf_size NEW: GNU ext.
3596 printf_size_info NEW: GNU ext.
3597 profil_counter REMOVED
3598 pthread_mutexattr_getkind_np REPLACED
3599 pthread_mutexattr_setkind_np REPLACED
3600 ptsname NEW: Unix98 PTY
3601 ptsname_r NEW: Unix98 PTY
3603 putchar_locked REMOVED
3604 putgrent NEW: GNU ext.
3606 putpmsg NEW: STREAMS
3607 pututxline NEW: Unix98
3611 readdir64_r NEW: LFS
3612 remquo NEW: ISO C 9x
3613 remquof NEW: ISO C 9x
3614 remquol NEW: ISO C 9x
3616 roundf NEW: ISO C 9x
3617 roundl NEW: ISO C 9x
3619 scalbln NEW: ISO C 9x
3620 scalblnf NEW: ISO C 9x
3621 scalblnl NEW: ISO C 9x
3623 sendfile NEW: kernel
3624 setcontext NEW: Unix98
3625 setrlimit64 NEW: LFS
3626 setutxent NEW: Unix98
3628 sigignore NEW: Unix98
3629 sigqueue NEW: POSIX.1b
3630 sigrelse NEW: Unix98
3631 sigset NEW: POSIX.1b
3632 sigtimedwait NEW: POSIX.1b
3633 sigwaitinfo NEW: POSIX.1b
3634 sincos NEW: GNU ext.
3635 sincosf NEW: GNU ext.
3636 sincosl NEW: GNU ext.
3640 strcasestr NEW: GNU ext.
3641 strtoimax NEW: ISO C 9x
3642 strtoumax NEW: ISO C 9x
3643 strverscmp NEW: GNU ext.
3644 svcauthdes_stats NEW: Secure RPC
3645 svcunix_create NEW: sunrpc etx
3646 svcunixfd_create NEW: sunrpc ext
3647 swapcontext NEW: Unix98
3648 tcgetsid NEW: Unix98 PTY
3649 tdestroy NEW: GNU ext.
3650 tgamma NEW: ISO C 9x
3651 tgammaf NEW: ISO C 9x
3652 tgammal NEW: ISO C 9x
3656 truncf NEW: ISO C 9x
3657 truncl NEW: ISO C 9x
3659 unlockpt NEW: Unix98 PTY
3660 updwtmpx NEW: Unix98
3661 user2netname NEW: Secure RPC
3662 utmpxname NEW: Unix98
3663 versionsort NEW: GNU ext.
3664 versionsort64 NEW: GNU ext.
3666 wcscasecmp NEW: GNU ext.
3667 wcsncasecmp NEW: GNU ext.
3668 wcsnlen NEW: GNU ext.
3669 wcstoimax NEW: ISO C 9x
3670 wcstoll NEW: ISO C 9x
3671 wcstoull NEW: ISO C 9x
3672 wcstoumax NEW: ISO C 9x
3674 wordexp NEW: POSIX.2
3675 wordfree NEW: POSIX.2
3676 write_profiling REMOVED
3677 xdecrypt NEW: Secure RPC
3678 xdr_authdes_cred NEW: Secure RPC
3679 xdr_authdes_verf NEW: Secure RPC
3680 xdr_cryptkeyarg NEW: Secure RPC
3681 xdr_cryptkeyarg2 NEW: Secure RPC
3682 xdr_cryptkeyres NEW: Secure RPC
3683 xdr_getcredres NEW: Secure RPC
3684 xdr_key_netstarg NEW: Secure RPC
3685 xdr_key_netstres NEW: Secure RPC
3686 xdr_keybuf NEW: Secure RPC
3687 xdr_keystatus NEW: Secure RPC
3688 xdr_netnamestr NEW: Secure RPC
3689 xdr_sizeof NEW: Secure RPC
3690 xdr_unixcred NEW: sunrpc ext
3691 xencrypt NEW: Secure RPC
3692 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3703 * inet_ntoa is thread-safe
3705 * updwtmp is moved from libutil to libc
3707 * rewrite of cbrt function
3709 * update of timezone data
3723 * add atoll function
3725 * fix complex problems in Berkeley DB code
3727 * fix math functions
3731 * fixed lots of header problems (especially Linux/GNU specific)
3733 * dynamic loader preserves all registers
3735 * Roland McGrath provided support for handling of auxiliary objects in
3736 the ELF dynamic loader.
3738 * support for parallel builds is improved
3742 * GNU extensions are no longer declared by default. To enable them you
3743 must define the macro `_GNU_SOURCE' in your program or compile with
3746 * The library has changed from using GNU ld symbol aliases to using weak
3747 symbols where available. The ELF object file format supports weak
3748 symbols; GNU ld also supports weak symbols in the a.out format. (There
3749 is also now support for other GNU ld extensions in ELF. Use the
3750 `--with-elf' option to configure to indicate you have ELF, and
3751 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
3752 of many files which contained only symbol aliases, reducing the size of
3753 the source and the compiled library; many other files were renamed to
3754 less cryptic names previously occupied by the symbol alias files.
3755 There is a new header file <elf.h> for programs which operate on
3756 files in the ELF format.
3758 * Converted to Autoconf version 2, so `configure' has more options.
3759 Run `configure --help' to see the details.
3761 * The library can now be configured to build profiling, highly-optimized
3762 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
3763 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
3764 `configure' enable building these extra libraries. The shared library is
3765 built by default when using both ELF and GNU ld. When shared libraries
3766 are enabled, the new library `-ldl' is available for arbitrary run-time
3767 loading of shared objects; its interface is defined in <dlfcn.h>. The
3768 new header file <link.h> gives access to the internals of the run-time
3769 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
3770 application of same name on other systems and it provides information
3771 about dynamically linked binaries.
3773 * The C library now provides the run-time support code for profiling
3774 executables compiled with `-pg'. Programs can control the profiling code
3775 through the interface in <sys/gmon.h>. The `gmon.out' files written by
3776 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
3777 the support for this file format was contributed by David Mosberger-Tang.
3779 * The math code has been replaced with a math library based on fdlibm from
3780 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
3781 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
3782 functions. The math functions now reside in a separate library, so
3783 programs using them will need to use `-lm' their linking commands.
3785 * John C. Bowman contributed optimized ix87 assembler inline functions.
3787 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
3788 mechanism similar to that found in Solaris 2. This is now used for the
3789 group, passwd, hosts, networks, services, protocols, rpc, ethers,
3790 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
3791 file controls what services are used for each individual database. This
3792 works by loading shared libraries with names specified in `nsswitch.conf',
3793 so service modules can be changed or added at any time without even
3794 relinking any program. Currently there are the file, db, and NIS based
3795 NSS services available.
3797 * The new functions `strtoq' and `strtouq' parse integer values from
3798 strings, like `strtol' and `strtoul', but they return `long long int' and
3799 `unsigned long long int' values, respectively (64-bit quantities).
3801 * The new functions `strtof' and `strtold' parse floating-point values from
3802 strings, like `strtod', but they return `float' and `long double' values,
3803 respectively (on some machines `double' and `long double' are the same).
3805 * Ulrich Drepper has contributed new implementations of the floating-point
3806 printing and reading code used in the `printf' family of functions and
3807 `strtod', `strtof', and `strtold'. These new functions are perfectly
3808 accurate, and much faster than the old ones.
3810 * The implementation of the POSIX locale model was completely rewritten by
3811 Ulrich Drepper. This includes the new programs `localedef' and `locale'
3812 to compile the POSIX locale definition.
3814 * The former dummy implementations of the strcoll and strxfrm function are
3815 now replaced by fully functional code contributed by Ulrich Drepper. The
3816 collation information comes from the POSIX locale definitions.
3818 * The new header <langinfo.h> defines an interface for accessing
3819 various locale-dependent data (using the locale chosen with `setlocale').
3821 * Ulrich Drepper has contributed a new suite of functions for operation on
3822 wide-character and multibyte-character strings, in <wchar.h>;
3823 and classification and case conversion of wide characters, in <wctype.h>.
3824 These new functions are conforming to the ISO C, Amendement 1 specification.
3826 * There is now a second implementation of the standard I/O library available.
3827 It comes from GNU libg++ as was written by Per Bothner, heavily modified
3828 by Hongjiu Lu and made thread safe by Ulrich Drepper.
3830 * You can now use positional parameter specifications in format strings
3831 for the `printf' and `scanf' families of functions. For example,
3832 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
3833 ``Number 6, Mr Jones''. This is mainly useful when providing different
3834 format strings for different languages, whose grammars may dictate
3835 different orderings of the values being printed. To support this
3836 feature, the interface for `register_printf_handler' has changed; see
3837 the header file <printf.h> for details.
3839 * The `printf' and `scanf' families of functions now understand a new
3840 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
3841 to group numbers as indicated by the locale; for `scanf' and friends, this
3842 says to accept as valid only a number with all the proper grouping
3843 separators in the right places. In the default "C" locale, numbers are
3844 not grouped; but locales for specific countries will define the usual
3845 conventions (i.e. separate thousands with `,' in the US locale).
3847 * The pgrp functions have been regularized, slightly incompatibly but much
3848 less confusingly. The core functions are now `getpgid' and `setpgid',
3849 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
3850 argument) and BSD `setpgrp' (identical to `setpgid') functions are
3851 provided for compatibility. There is no longer an incompatible `getpgrp'
3852 with an argument declared under _BSD_SOURCE; no BSD code uses it.
3854 * The new header file <fts.h> and suite of functions simplify programs that
3855 operate on directory trees. This code comes from 4.4 BSD.
3857 * The resolver code has been updated from the BIND 4.9.5-P1 release.
3858 Parts of the code were heavily modified by Ulrich Drepper to fit in the
3859 NSS scheme used in glibc.
3861 * There is a new malloc debugging hook `__memalign_hook'.
3863 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
3864 `unsigned int' in <sys/types.h>. These are for compatibility only and
3865 their use is discouraged.
3867 * The `-lmcheck' library to enable standard malloc debugging hooks is now
3868 done differently, so that it works even without GNU ld.
3870 * New function `euidaccess' checks allowed access to a file like `access',
3871 but using the effective IDs instead of the real IDs.
3873 * The time zone data files have been updated for the latest and greatest
3874 local time conventions of the countries of the world.
3876 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
3879 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
3880 for formatting floating-point numbers. They are provided only for
3881 compatibility; new programs should use `sprintf' instead. There are
3882 also equivalent function for the `long double' floating-point type and
3883 all functions also exist in a reentrant form.
3885 * The new auxiliary library `-lutil' from 4.4 BSD contains various
3886 functions for maintaining the login-record files (primarily of use to
3887 system programs such as `login'), and convenient functions for
3888 allocating and initializing a pseudo-terminal (pty) device.
3890 * Ulrich Drepper has contributed new support for System V style
3891 shared memory and IPC on systems that support it.
3893 * Ulrich Drepper has contributed several miscellaneous new functions found
3894 in System V: The `hsearch' family of functions provide an effective
3895 implementation of hash tables; `a64l' and `l64a' provide a very simple
3896 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
3899 * Ulrich Drepper has contributed new reentrant counterparts for the
3900 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
3902 * Ulrich Drepper has contributed new, highly-optimized versions of several
3903 string functions for the i486/Pentium family of processors.
3905 * Ulrich Drepper has updated the Linux-specific code, based largely
3906 on work done in Hongjiu Lu's version of GNU libc for Linux.
3907 The GNU library now supports Linux versions 2.0.10 and later,
3908 using the ELF object file format (i[3456]86-*-linux).
3910 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
3912 * David Mosberger-Tang and Richard Henderson have ported the C library
3913 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
3914 dynamic linking support for ELF/Alpha.
3916 * Richard Henderson contributed several Alpha optimized assembler function
3917 for arithmetic and string handling.
3919 * Ulrich Drepper has contributed a new set of message catalog functions to
3920 support multiple languages using the <libintl.h> interface, for use with
3921 his new package GNU gettext. Translation volunteers have contributed
3922 catalogs of the library's messages in Spanish, German, and Korean.
3924 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
3925 program and the `catgets' function for reading the catalog files it
3926 creates. (The <libintl.h> interface is preferred; we include the
3927 <nl_types.h> interface using `catgets' only for source compatibility with
3928 programs already written to use it.)
3930 * New header file <values.h> gives SVID-compatible names for <limits.h>
3933 * Various new macros, declarations, and small header files for compatibility
3936 * New function `group_member' is a convenient way to check if a process has
3937 a given effective group ID.
3939 * When using GCC 2.7 and later, the socket functions are now declared in a
3940 special way so that passing an argument of type `struct sockaddr_in *',
3941 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
3942 `struct sockaddr *' type, does not generate a type-clash warning.
3944 * New function `error' declared in header file <error.h> is a convenient
3945 function for printing error messages and optionally exiting; this is the
3946 canonical function used in GNU programs. The new functions `err', `warn',
3947 and friends in header file <err.h> are the canonical 4.4 BSD interface for
3948 doing the same thing.
3950 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
3951 POSIX.2 `glob' function to do ~ and {...} expansion.
3953 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
3954 `clearenv' which is used in POSIX.9 is also available.
3956 * New function `getsid' returns session ID number on systems that support it.
3958 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
3959 files <db.h> and <mpool.h> provide a rich set of functions for several
3960 types of simple databases stored in memory and in files, and <ndbm.h> is
3961 an old `ndbm'-compatible interface using the `db' functions. Link with
3962 `-ldb' to get these functions.
3964 * New macro `strdupa' copies a string like `strdup', but uses local stack
3965 space from `alloca' instead of dynamic heap space from `malloc'.
3967 * New function `strnlen' is like `strlen' but searches only a given maximum
3968 number of characters for the null terminator. `stpncpy', `strndup' and
3969 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
3972 * New function `statfs' in header <sys/statfs.h>.
3974 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
3975 provide convenient functions for operating on blocks of null-terminated
3978 * A new suite of functions in <utmp.h> handle all the details of reading
3979 and writing the utmp file.
3981 * An implementation of the NIS/YP(tm) based NSS service was contributed by
3984 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
3985 completely POSIX compliant and also implemented the extended functionality
3986 to handle alternate digit representation and alternate era date formats.
3988 * Ulrich Drepper provided an implementation of the `strptime' function
3989 defined in XPG4.2 which transforms a string into a `struct tm' value.
3991 * Paul Eggert provided the tzselect shell script as part of the timezone
3992 code. The shell script makes it easy to select the correct timezone
3995 * The implementation of the malloc family of functions is completely replaced
3996 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
3997 The implementation uses the mmap function (if available) and it is
3998 optimized for the use in multi threaded programs.
4000 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
4001 functions. This new functionality is usable by specifying a special
4002 salt string and it is compatible with implementation on *BSD systems.
4004 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
4005 `getsubopt' to handle second level command line options, `bsd_signal'
4006 to access BSD style `signal' functionality, the obsolete `regexp' style
4009 * the `lchown' function is available on system which support this
4012 * The implementation of the shadow password handling function was contributed
4015 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
4017 * POSIX.1g support was added. The <sys/select.h> header is available,
4018 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
4019 implementation of `getaddrinfo'.
4023 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
4025 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
4026 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
4028 * The new function `daemon' from 4.4 BSD is useful for server programs that
4029 want to put themselves in the background.
4031 * Joel Sherrill has contributed support for several standalone boards that
4032 run without an operating system.
4034 * `printf', `scanf' and friends now accept a `q' type modifier for long
4035 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
4037 * All of the code taken from BSD (notably most of the math and networking
4038 routines) has been updated from the BSD 4.4-Lite release.
4040 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
4042 * The new functions `getdomainname' and `setdomainname' fetch or change the
4043 YP/NIS domain name. These are system calls which exist on systems which
4046 * The time zone data files have been updated for the latest international
4049 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
4050 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
4054 * The C library now includes support for Sun RPC, from Sun's free
4055 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
4056 are included. (There is still no support for YP.)
4058 * Tom Quinn has contributed a port of the C library to SGI machines running
4059 Irix 4 (mips-sgi-irix4).
4061 * The new `lockf' function is a simplified interface to the locking
4062 facilities of `fcntl', included for compatibility.
4064 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
4066 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
4068 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
4071 * The error message printed by `assert' for a failed assertion now includes
4072 the name of the program (if using GNU ld) and the name of the calling
4073 function (with versions of GCC that support this).
4075 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
4077 * The library now includes the <sys/mman.h> header file and memory
4078 management functions `mmap', `munmap', `mprotect', `msync', and
4079 `madvise', on systems that support those facilities.
4081 * The interface for `mcheck' has changed slightly: the function called to
4082 abort the program when an allocation inconsistency is detected now takes
4083 an argument that indicates the type of failure. The new function
4084 `mprobe' lets you request a consistency check for a particular block at
4085 any time (checks are normally done only when you call `free' or `realloc'
4088 * It is now possible to easily cross-compile the C library, building on one
4089 system a library to run on another machine and/or operating system. All
4090 you need to do is set the variable `HOST_CC' in `configparms' to the
4091 native compiler for programs to run on the machine you are building on (a
4092 few generator programs are used on Unix systems); set `CC' to the
4095 * The new function `fexecve' (only implemented on the GNU system) executes
4096 a program file given a file descriptor already open on the file.
4100 * Brendan Kehoe has contributed most of a port to the DEC Alpha
4101 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
4103 * You can set the variable `libprefix' in `configparms' to specify a prefix
4104 to be prepended to installed library files; this makes it easy to install
4105 the GNU C library to be linked as `-lgnuc' or whatever.
4107 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
4108 copies a limited number of characters from a string, and returns the
4109 address of the last character written.
4111 * You no longer need to check for whether the installed `stddef.h' is
4112 compatible with the GNU C library. configure now checks for you.
4114 * You can now define a per-stream `fileno' function to convert the
4115 stream's cookie into an integral file descriptor.
4117 * ``malloc (0)'' no longer returns a null pointer. Instead, it
4118 allocates zero bytes of storage, and returns a unique pointer which
4119 you can pass to `realloc' or `free'. The behavior is undefined if
4120 you dereference this pointer.
4122 * The C library now runs on Sony NEWS m68k machines running either
4123 NewsOS 3 or NewsOS 4.
4125 * The new `syscall' function is a system-dependent primitive function
4126 for invoking system calls. It has the canonical behavior on Unix
4127 systems, including unreliable return values for some calls (such as
4128 `pipe', `fork' and `getppid').
4130 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
4131 to `EAGAIN', which is the preferred name. On systems whose kernels
4132 use two distinct codes, the C library now translates EWOULDBLOCK to
4133 EAGAIN in every system call function.
4137 * The GNU C Library Reference Manual is now distributed with the library.
4138 `make dvi' will produce a DVI file of the printed manual.
4139 `make info' will produce Info files that you can read on line using C-h i
4140 in Emacs or the `info' program.
4141 Please send comments on the manual to bug-glibc-manual@gnu.org.
4143 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
4145 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
4147 * Jason Merrill has contributed a port to the Sequent Symmetry running
4148 Dynix version 3 (i386-sequent-dynix).
4150 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
4151 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
4153 * New function `memory_warnings' lets you arrange to get warnings when
4154 malloc is running out of memory to allocate, like Emacs gives you.
4156 * The C library now contains the relocating allocator used in Emacs 19 for
4157 its editing buffers. This allocator (ralloc) minimizes allocation
4158 overhead and fragmentation by moving allocated regions around whenever it
4159 needs to. You always refer to a ralloc'd region with a "handle" (a
4160 pointer to a pointer--an object of type `void **').
4162 * There is a new `printf' format: `%m' gives you the string corresponding
4163 to the error code in `errno'.
4165 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
4166 or `%[' conversion, but instead of filling in a fixed-sized buffer you
4167 pass, the `a' modifier says to fill in a `char **' you pass with a
4170 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
4171 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
4172 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
4174 * `mkstemp' is a traditional Unix function to atomically create and open a
4175 uniquely-named temporary file.
4179 * The standard location for the file that says what the local timezone is
4180 has changed again. It is now `/usr/local/etc/localtime' (or more
4181 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
4183 * The distribution no longer contains any files with names longer than 14
4186 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
4187 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
4189 * New functions `ttyslot' and `syslog' from 4.4 BSD.
4193 * The configuration process has changed quite a bit. The `configure'
4194 script is now used just like the configuration scripts for other GNU
4195 packages. The `sysdeps' directory hierarchy is much rearranged.
4196 The file `INSTALL' explains the new scheme in detail.
4198 * The header files no longer need to be processed into ANSI C and
4199 traditional C versions. There is just one set of files to install, and
4200 it will work with ANSI or old C compilers (including `gcc -traditional').
4202 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
4203 MIPS DECStation running Ultrix 4.
4205 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
4206 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
4207 made itself into a shared library.
4209 * Yet further improved support for the i386, running 4.3 BSD-like systems
4210 (such as Mach 3 with the Unix single-server), or System V.
4212 * New function `strncasecmp' to do case-insensitive string comparison
4213 with limited length.
4215 * New function `strsep' is a reentrant alternative to `strtok'.
4217 * New functions `scandir' and `alphasort' for searching directories.
4219 * New function `setenv' is a better interface to `putenv'.
4221 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
4222 function for traversing a directory tree.
4224 * The GNU obstack package is now also part of the C library.
4225 The new function `open_obstack_stream' creates a stdio stream that
4226 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
4227 formatted output directly to an obstack.
4229 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
4230 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
4232 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
4234 * The new functions `strfry' and `memfrob' do mysterious and wonderful
4235 things to your strings.
4237 * There are some new test programs: test-fseek, testmb, and testrand.
4239 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
4240 These ports are not finished, but are a good starting place for really
4241 supporting those systems.
4243 * `/etc/localtime' is now the standard location for the file that says what
4244 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
4245 This follows the general principle that `/etc' is the place for all local
4246 configuration files.
4248 * The C library header files now use `extern "C"' when used by the C++
4249 compiler, so the C library should now work with C++ code.
4251 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
4252 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
4255 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
4256 function which uses the `merge sort' algorithm, and is said to be
4257 significantly faster than the old GNU `qsort' function. Merge sort is
4258 now the standard `qsort' function. The new algorithm can require a lot
4259 of temporary storage; so, the old sorting function is called when the
4260 required storage is not available.
4262 * The C library now includes Michael Glad's Ultra Fast Crypt, which
4263 provides the Unix `crypt' function, plus some other entry points.
4265 * The code and header files taken from 4.4 BSD have been updated with the
4266 latest files released from Berkeley.
4268 ----------------------------------------------------------------------
4269 Copyright information:
4271 Copyright (C) 1992-2017 Free Software Foundation, Inc.
4273 Permission is granted to anyone to make or distribute verbatim copies
4274 of this document as received, in any medium, provided that the
4275 copyright notice and this permission notice are preserved,
4276 thus giving the recipient permission to redistribute in turn.
4278 Permission is granted to distribute modified versions
4279 of this document, or of portions of it,
4280 under the above conditions, provided also that they
4281 carry prominent notices stating who last changed them.
4284 version-control: never