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 <http://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 Deprecated and removed features, and other changes affecting compatibility:
40 * On GNU/Linux, the obsolete Linux constant PTRACE_SEIZE_DEVEL is no longer
41 defined by <sys/ptrace.h>.
43 * libm no longer supports SVID error handling (calling a user-provided
44 matherr function on error) or the _LIB_VERSION variable to control error
45 handling. (SVID error handling and the _LIB_VERSION variable still work
46 for binaries linked against older versions of the GNU C Library.) The
47 libieee.a library is no longer provided. math.h no longer defines struct
48 exception, or the macros X_TLOSS, DOMAIN, SING, OVERFLOW, UNDERFLOW,
49 TLOSS, PLOSS and HUGE.
51 * The libm functions pow10, pow10f and pow10l are no longer supported for
52 new programs. Programs should use the standard names exp10, exp10f and
53 exp10l for these functions instead.
55 * The mcontext_t type is no longer the same as struct sigcontext. On
56 platforms where it was previously the same, this changes the C++ name
57 mangling for interfaces involving this type.
59 * The add-ons mechanism for building additional packages at the same time as
60 glibc has been removed. The --enable-add-ons configure option is now
63 Changes to build and runtime requirements:
65 [Add changes to build and runtime requirements here]
67 Security related changes:
69 CVE-2009-5064: The ldd script would sometimes run the program under
70 examination directly, without preventing code execution through the
71 dynamic linker. (The glibc project disputes that this is a security
72 vulnerability; only trusted binaries must be examined using the ldd
75 CVE-2017-15670: The glob function, when invoked with GLOB_TILDE, suffered
76 from a one-byte overflow during ~ operator processing (either on the stack
77 or the heap, depending on the length of the user name).
79 The following bugs are resolved with this release:
81 [The release manager will add the list generated by
82 scripts/list-fixed-bugs.py just before the release.]
89 * A per-thread cache has been added to malloc. Access to the cache requires
90 no locks and therefore significantly accelerates the fast path to allocate
91 and free small amounts of memory. Refilling an empty cache requires locking
92 the underlying arena. Performance measurements show significant gains in a
93 wide variety of user workloads. Workloads were captured using a special
94 instrumented malloc and analyzed with a malloc simulator. Contributed by
95 DJ Delorie with the help of Florian Weimer, and Carlos O'Donell.
97 * Unicode 10.0.0 Support: Character encoding, character type info, and
98 transliteration tables are all updated to Unicode 10.0.0, using
99 generator scripts contributed by Mike FABIAN (Red Hat).
100 These updates cause user visible changes, especially the changes in
101 wcwidth for many emoji characters cause problems when emoji sequences
102 are rendered with pango, see for example:
103 https://bugzilla.gnome.org/show_bug.cgi?id=780669#c5
105 * Collation of Hungarian has been overhauled and is now consistent with "The
106 Rules of Hungarian Orthography, 12th edition" (Bug 18934). Contributed by
109 * Improvements to the DNS stub resolver, contributed by Florian Weimer:
111 - The GNU C Library will now detect when /etc/resolv.conf has been
112 modified and reload the changed configuration. The new resolver option
113 “no-reload” (RES_NORELOAD) disables this behavior.
115 - The GNU C Library now supports an arbitrary number of search domains
116 (configured using the “search” directive in /etc/resolv.conf);
117 previously, there was a hard limit of six domains. For backward
118 compatibility, applications that directly modify the ‘_res’ global
119 object are still limited to six search domains.
121 - When the “rotate” (RES_ROTATE) resolver option is active, the GNU C
122 Library will now randomly pick a name server from the configuration as a
123 starting point. (Previously, the second name server was always used.)
125 * The tunables feature is now enabled by default. This allows users to tweak
126 behavior of the GNU C Library using the GLIBC_TUNABLES environment variable.
128 * New function reallocarray, which resizes an allocated block (like realloc)
129 to the product of two sizes, with a guaranteed clean failure upon integer
130 overflow in the multiplication. Originally from OpenBSD, contributed by
131 Dennis Wölfing and Rüdiger Sonderfeld.
133 * New wrappers for the Linux-specific system calls preadv2 and pwritev2.
134 These are extended versions of preadv and pwritev, respectively, taking an
135 additional flags argument. The set of supported flags depends on the
136 running kernel; full support currently requires kernel 4.7 or later.
138 * posix_spawnattr_setflags now supports the flag POSIX_SPAWN_SETSID, to
139 create a new session ID for the spawned process. This feature is
140 scheduled to be added to the next major revision of POSIX; for the time
141 being, it is available under _GNU_SOURCE.
143 * errno.h is now safe to use from C-preprocessed assembly language on all
144 supported operating systems. In this context, it will only define the
145 Exxxx constants, as preprocessor macros expanding to integer literals.
147 * On ia64, powerpc64le, x86-32, and x86-64, the math library now implements
148 128-bit floating point as defined by ISO/IEC/IEEE 60559:2011 (IEEE
149 754-2008) and ISO/IEC TS 18661-3:2015. Contributed by Paul E. Murphy,
150 Gabriel F. T. Gomes, Tulio Magno Quites Machado Filho, and Joseph Myers.
152 To compile programs that use this feature, the compiler must support
153 128-bit floating point with the type name _Float128 (as defined by TS
154 18661-3) or __float128 (the nonstandard name used by GCC for C++, and for
155 C prior to version 7). _GNU_SOURCE or __STDC_WANT_IEC_60559_TYPES_EXT__
156 must be defined to make the new interfaces visible.
158 The new functions and macros correspond to those present for other
159 floating-point types (except for a few obsolescent interfaces not
160 supported for the new type), with F128 or f128 suffixes; for example,
161 strtof128, HUGE_VAL_F128 and cosf128. Following TS 18661-3, there are no
162 printf or scanf formats for the new type; the strfromf128 and strtof128
163 interfaces should be used instead.
165 Deprecated and removed features, and other changes affecting compatibility:
167 * The synchronization that pthread_spin_unlock performs has been changed to
168 now be equivalent to a C11 atomic store with release memory order to the
169 spin lock's memory location. Previously, several (but not all)
170 architectures used stronger synchronization (e.g., containing what is
171 often called a full barrier). This change can improve performance, but
172 may affect odd fringe uses of spin locks that depend on the previous
173 behavior (e.g., using spin locks as atomic variables to try to implement
174 Dekker's mutual exclusion algorithm).
176 * The port to Native Client running on ARMv7-A (--host=arm-nacl) has been
179 * Sun RPC is deprecated. The rpcgen program, librpcsvc, and Sun RPC headers
180 will only be built and installed when the GNU C Library is configured with
181 --enable-obsolete-rpc. This allows alternative RPC implementations, such
182 as TIRPC or rpcsvc-proto, to be used.
184 * The NIS(+) name service modules, libnss_nis, libnss_nisplus, and
185 libnss_compat, are deprecated, and will not be built or installed by
188 The NIS(+) support library, libnsl, is also deprecated. By default, a
189 compatibility shared library will be built and installed, but not headers
190 or development libraries. Only a few NIS-related programs require this
191 library. (In particular, the GNU C Library has never required programs
192 that use 'gethostbyname' to be linked with libnsl.)
194 Replacement implementations based on TIRPC, which additionally support
195 IPv6, are available from <https://github.com/thkukuk/>. The configure
196 option --enable-obsolete-nsl will cause libnsl's headers, and the NIS(+)
197 name service modules, to be built and installed.
199 * The DNS stub resolver no longer performs EDNS fallback. If EDNS or DNSSEC
200 support is enabled, the configured recursive resolver must support EDNS.
201 (Responding to EDNS-enabled queries with responses which are not
202 EDNS-enabled is fine, but FORMERR responses are not.)
204 * res_mkquery and res_nmkquery no longer support the IQUERY opcode. DNS
205 servers have not supported this opcode for a long time.
207 * The _res_opcodes variable has been removed from libresolv. It had been
208 exported by accident.
210 * <string.h> no longer includes inline versions of any string functions,
211 as this kind of optimization is better done by the compiler. The macros
212 __USE_STRING_INLINES and __NO_STRING_INLINES no longer have any effect.
214 * The nonstandard header <xlocale.h> has been removed. Most programs should
215 use <locale.h> instead. If you have a specific need for the definition of
216 locale_t with no other declarations, please contact
217 libc-alpha@sourceware.org and explain.
219 * The obsolete header <sys/ultrasound.h> has been removed.
221 * The obsolete signal constant SIGUNUSED is no longer defined by <signal.h>.
223 * The obsolete function cfree has been removed. Applications should use
226 * The stack_t type no longer has the name struct sigaltstack. This changes
227 the C++ name mangling for interfaces involving this type.
229 * The ucontext_t type no longer has the name struct ucontext. This changes
230 the C++ name mangling for interfaces involving this type.
232 * On M68k GNU/Linux and MIPS GNU/Linux, the fpregset_t type no longer has
233 the name struct fpregset. On Nios II GNU/Linux, the mcontext_t type no
234 longer has the name struct mcontext. On SPARC GNU/Linux, the struct
235 mc_fq, struct rwindow, struct fpq and struct fq types are no longer
236 defined in sys/ucontext.h, the mc_fpu_t type no longer has the name struct
237 mc_fpu, the gwindows_t type no longer has the name struct gwindows and the
238 fpregset_t type no longer has the name struct fpu. This changes the C++
239 name mangling for interfaces involving those types.
241 * On S/390 GNU/Linux, the constants defined by <sys/ptrace.h> have been
242 synced with the kernel:
244 - PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS
245 are not supported on this architecture and have been removed.
247 - PTRACE_SINGLEBLOCK, PTRACE_SECCOMP_GET_FILTER, PTRACE_PEEKUSR_AREA,
248 PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE,
249 PTRACE_DISABLE_TE and PTRACE_TE_ABORT_RAND have been added.
251 Programs that assume the GET/SETREGS ptrace requests are universally
252 available will now fail to build, instead of malfunctioning at runtime.
254 Changes to build and runtime requirements:
256 * Linux kernel 3.2 or later is required at runtime, on all architectures
257 supported by that kernel. (This is a change from version 2.25 only for
260 * GNU Binutils 2.25 or later is now required to build the GNU C Library.
262 * On most architectures, GCC 4.9 or later is required to build the GNU C
263 Library. On powerpc64le, GCC 6.2 or later is required.
265 Older GCC versions and non-GNU compilers are still supported when
266 compiling programs that use the GNU C Library. (We do not know exactly
267 how old, and some GNU extensions to C may be _de facto_ required. If you
268 are interested in helping us make this statement less vague, please
269 contact libc-alpha@sourceware.org.)
271 Security related changes:
273 * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
274 to avoid fragmentation-based spoofing attacks (CVE-2017-12132).
276 * LD_LIBRARY_PATH is now ignored in binaries running in privileged AT_SECURE
277 mode to guard against local privilege escalation attacks (CVE-2017-1000366).
279 * Avoid printing a backtrace from the __stack_chk_fail function since it is
280 called on a corrupt stack and a backtrace is unreliable on a corrupt stack
283 * A use-after-free vulnerability in clntudp_call in the Sun RPC system has been
284 fixed (CVE-2017-12133).
286 The following bugs are resolved with this release:
288 [984] network: Respond to changed resolv.conf in gethostbyname
289 [5010] network: sunrpc service cleanup causes unwanted port mapper traffic
290 [12068] localedata: sc_IT: misspelled yesexpr/day/abday/mon/abmon/date_fmt
292 [12189] libc: __stack_chk_fail should not attempt a backtrace
294 [14096] time: Race condition on timezone/tst-timezone.out
295 [14172] localedata: az_IR: new locale
296 [14995] build: glibc fails to build if gold is the default linker, even if
298 [15998] build: [powerpc] Set arch_minimum_kernel for powerpc LE
299 [16637] network: inet_pton function is accepting IPv6 with bad format
300 [16640] string: string/strtok.c: undefined behaviour inconsistent between
301 x86 and other generic code
302 [16875] localedata: ko_KR: fix lang_name
303 [17225] localedata: ar_SY: localized month names for May and June are
305 [17297] localedata: da_DK: wrong date_fmt string
306 [18907] stdio: Incorrect order of __wur __THROW in <printf.h>
307 [18934] localedata: hu_HU: collate: fix multiple bugs and add tests
308 [18988] nptl: pthread wastes memory with mlockall(MCL_FUTURE)
309 [19066] localedata: ar_SA abbreviated day and month names are in English
310 [19569] network: resolv: Support an arbitrary number of search domains
311 [19570] network: Implement random DNS server selection in the stub
313 [19838] locale: localedef fails on PA-RISC
314 [19919] localedata: iso14651_t1_common: Correct the Malayalam sorting
315 order of 0D36 and 0D37
316 [19922] localedata: iso14651_t1_common: Define collation for Malayalam
318 [20098] libc: FAIL: debug/backtrace-tst on hppa
319 [20257] network: sunrpc: clntudp_call does not enforce timeout when
321 [20275] localedata: locale day/abday/mon/abmon should not have trailing
323 [20313] localedata: Update locale data to Unicode 9.0
324 [20424] manual: Document how to provide a malloc replacement
325 [20496] localedata: agr_PE: new language locale Awajún / Aguaruna (agr)
327 [20686] locale: Add el_GR@euro to SUPPORTED.
328 [20831] dynamic-link: _dl_map_segments does not test for __mprotect
329 failures consistently
330 [21015] dynamic-link: Document and fix --enable-bind-now
331 [21016] nptl: pthread_cond support is broken on hppa
332 [21029] libc: glibc-2.23 (and later) fails to compile with -fno-omit-
333 frame-pointer on i386
334 [21049] libc: segfault in longjmp_chk() due to clobbered processor
336 [21075] libc: unused assigment to %g4 in sparc/sparc{64,32}/clone.S
337 [21088] libc: Build fails with --enable-static-nss
338 [21094] math: cosf(1.57079697) has 3 ulp error on targets where the
339 generic c code is used
340 [21109] libc: Tunables broken on big-endian
341 [21112] math: powf has large ulp errors with base close to 1 and exponent
343 [21115] network: sunrpc: Use-after-free in error path in clntudp_call
345 [21120] malloc: glibc malloc is incompatible with GCC 7
346 [21130] math: Incorrect return from y0l (-inf) and y1l (-inf) when linking
348 [21134] math: Exception (divide by zero) not set for y0/y1 (0.0) and y0/y1
349 (-0.0) when linking with -lieee
350 [21171] math: log10, log2 and lgamma return incorrect results
351 [21179] libc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs
352 [21182] libc: __memchr_sse2: regression in glibc-2.25 on i686
353 [21207] localedata: ce_RU: update weekdays from CLDR
354 [21209] dynamic-link: LD_HWCAP_MASK read in setuid binaries
355 [21217] localedata: Update months from CLDR-31
356 [21232] libc: miss posix_fadvise64 on MIPS64 when static linking
357 [21243] libc: support_delete_temp_file should issue warning for failed
359 [21244] libc: support resolv_test_start() socket fd close should be
361 [21253] libc: localedef randomly segfaults when using -fstack-check due to
362 new posix_spawn implementation
363 [21258] dynamic-link: Branch predication in _dl_runtime_resolve_avx512_opt
364 leads to lower CPU frequency
365 [21259] libc: [alpha] termios.h missing IXANY for POSIX
366 [21261] libc: [sparc64] bits/setjmp.h namespace
367 [21267] network: [mips] bits/socket.h IOC* namespace
368 [21268] libc: [alpha] termios.h NL2, NL3 namespace
369 [21270] libc: mmap64 silently truncates large offset values
370 [21275] libc: posix_spawn always crashes on ia64 now
371 [21277] libc: [alpha] termios.h missing IUCLC for UNIX98 and older
372 [21280] math: [powerpc] logbl for POWER7 return incorrect results
373 [21289] libc: Incorrect declaration for 32-bit platforms with
374 _FILE_OFFSET_BITS=64 causes build error
375 [21295] network: GETAI(AF_UNSPEC) drops IPv6 addresses if nss module does
376 not support gethostbyname4_r
377 [21298] nptl: rwlock can deadlock on frequent reader/writer phase
379 [21338] malloc: mallopt M_ARENA_MAX doesn't set the maximum number of
381 [21340] libc: Support POSIX_SPAWN_SETSID
382 [21357] libc: unwind-dw2-fde deadlock when using AddressSanitizer
383 [21359] network: ns_name_pack needs additional byte in destination buffer
384 [21361] network: resolv: Reduce advertised EDNS0 buffer size to guard
385 against fragmentation attacks (CVE-2017-12132)
386 [21369] network: resolv: Remove EDNS fallback
387 [21371] libc: Missing timespec definition when compiled with _XOPEN_SOURCE
389 [21386] nptl: Assertion in fork for distinct parent PID is incorrect
390 [21391] dynamic-link: x86: Set dl_platform and dl_hwcap from CPU features
391 [21393] stdio: Missing dup3 error check in freopen, freopen64
392 [21396] libc: Use AVX2 memcpy/memset on Skylake server
393 [21399] localedata: Bad description for U00EC in
394 localedata/charmaps/CP1254
395 [21411] malloc: realloc documentation error
396 [21426] network: sys/socket.h uio.h namespace
397 [21428] libc: [aarch64] tst-backtrace5 testsuite failure
398 [21445] libc: signal.h bsd_signal namespace
399 [21455] network: Network headers stdint.h namespace
400 [21474] network: resolv: res_init does not use RES_DFLRETRY (2) but 4 for
402 [21475] network: resolv: Overlong search path is truncated mid-label
403 [21511] libc: sigstack namespace
404 [21512] libc: clone() ends up calling exit_group() through _exit() wrapper
405 [21514] libc: sysdeps/unix/sysv/linux/sys/syscall.h:31:27: fatal error:
406 bits/syscall.h: No such file or directory
407 [21517] libc: struct sigaltstack namespace
408 [21528] dynamic-link: Duplicated minimal strtoul implementations in ld.so
409 [21533] localedata: Update locale data to Unicode 10.0
411 ../sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:44: Error:
412 junk at end of line, first unrecognized character is `@'
413 [21538] libc: SIG_HOLD missing for XPG4
414 [21539] libc: S390: Mismatch between kernel and glibc ptrace.h with
415 request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.
416 [21542] libc: Use conservative default for sysconf (_SC_NPROCESSORS_ONLN)
417 [21543] libc: sigevent namespace
418 [21548] libc: [mips] get/set/make/swap context for MIPS O32 assume wrong
419 size for general purpose registers in mcontext_t structure
420 [21550] libc: sigwait namespace
421 [21552] libc: XPG4 bsd_signal namespace
422 [21554] libc: sigpause namespace
423 [21560] libc: sys/wait.h signal.h namespace
424 [21561] libc: waitid namespace
425 [21573] nptl: GCC 7: /usr/bin/install: cannot remove
426 '/usr/include/stdlib.h': Permission denied
427 [21575] libc: sys/wait.h missing struct rusage definition
428 [21584] libc: sigaltstack etc namespace
429 [21597] libc: siginterrupt namespace
430 [21607] math: hppa: FAIL: math/test-tgmath
431 [21609] dynamic-link: Incomplete workaround for GCC __tls_get_addr ABI
433 [21622] libc: [tile] missing SA_* for POSIX.1:2008
434 [21624] dynamic-link: ld.so: Unsafe alloca allows local attackers to alias
435 stack and heap (CVE-2017-1000366)
436 [21625] libc: wait3 namespace
437 [21654] nss: Incorrect pointer alignment in NSS group merge result
439 [21657] network: Parse interface zone id for node-local multicast
440 [21662] string: memcmp-avx2-movbe.S lacks saturating subtraction for
442 [21666] libc: .symver is used on common symbol
443 [21668] network: resolv: res_init cross-thread broadcast introduces race
445 [21687] math: tgmath.h totalorder, totalordermag return type
446 [21694] locale: Current Glibc Locale Does Not Support Tok-Pisin and Fiji
448 [21696] libc: Incorrect assumption of of __cpu_mask in
449 posix/sched_cpucount.c
450 [21697] libc: sysdeps/posix/spawni.c: 2 * suspicious condition ?
451 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
453 [21707] math: ppc64le: Invalid IFUNC resolver from libgcc calls getauxval,
454 leading to relocation crash
455 [21709] libc: resolv_conf.c:552: update_from_conf: Assertion
456 `resolv_conf_matches (resp, conf)' failed.
457 [21710] localedata: Added Samoan language locale for Samoa
458 [21711] localedata: Pashto yesstr/nostr locale are missing
459 [21715] nptl: sysdeps/nptl/bits/pthreadtypes.h: typedef guard
460 __have_pthread_attr_t can cause redefinition of typedef ‘pthread_attr_t’
461 [21721] localedata: Incorrect Full Weekday names for ks_IN@devanagari
462 [21723] localedata: yesstr/nostr missing for Chinese language locale
463 [21724] localedata: yesstr and nostr are missing for Xhosa [LC_MESSAGES]
465 [21727] localedata: yesstr and nostr are missing for Tsonga [LC_MESSAGES]
467 [21728] localedata: New Locale for Tongan language
468 [21729] localedata: incorrect LC_NAME fields for hi_IN
469 [21733] localedata: yesstr and nostr are missing for zh_HK
470 [21734] localedata: Missing yesstr and nostr are for kw_GB
471 [21738] libc: misc/tst-preadvwritev2 and misc/tst-preadvwritev64v2 fail
472 [21741] libc: Undefined __memmove_chk_XXX and __memset_chk_XXX in libc.a
473 [21742] libc: _dl_num_cache_relocations is undefined in libc.a
474 [21743] localedata: ks_IN@devanagari: abday strings mismatch the day
476 [21744] libc: Tests failing on --enable-tunables --enable-stack-
478 [21749] localedata: Wrong abbreviated day name (“abday”) for
480 [21756] localedata: missing yesstr, nostr for nds_DE and nds_NL
481 [21757] localedata: missing yesstr, nostr for pap_AW and pap_CW
482 [21759] localedata: missing yesstr and nostr for Tigrinya
483 [21760] localedata: Fix LC_MESSAGES and LC_ADDRESS for anp_IN
484 [21766] localedata: Wrong LC_MESSAGES for om_ET Locale
485 [21767] localedata: Missing Bislama locales
486 [21768] localedata: Missing yesstr and nostr for aa_ET
487 [21770] localedata: Missing Field in li_NL
488 [21778] nptl: Robust mutex may deadlock
489 [21779] libc: MicroBlaze segfaults when loading libpthread
490 [21783] localedata: Fix int_select international_call_prefixes
491 [21784] localedata: Inconsistency in country_isbn
492 [21788] localedata: Missing Country Postal Abbreviations
493 [21794] localedata: Added-country_isbn-for-Italy
494 [21795] localedata: Add/Fix country_isbn for France
495 [21796] localedata: Added country_isbn for Republic of Korea
496 [21797] localedata: Fix inconsistency in country_isbn and missing prefixes
497 [21799] localedata: Added int_select international_call_prefixes
498 [21801] localedata: Added int_select international_call_prefixes
499 [21804] nptl: Double semicolon in thread-shared-types.h
500 [21807] localedata: LC_ADDRESS fix for pap_CW
501 [21808] localedata: Fix LC_ADDRESS for pap_AW
502 [21821] localedata: Added country_name in mai_IN
503 [21822] localedata: Fix LC_TIME for mai_IN
504 [21823] localedata: missing yesstr, nostr for sa_IN
505 [21825] localedata: Fix name_mrs for mag_IN
506 [21828] localedata: 2.26 changelog should mention user visible changes
508 [21835] localedata: Added Maithili language locale for Nepal
509 [21838] localedata: Removed redundant data for the_NP
510 [21839] localedata: Fix LC_MONETARY for ta_LK
511 [21844] localedata: Fix Latin characters and Months Sequence.
512 [21848] localedata: Fix mai_NP Title Name
517 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
518 24731-2:2010, is supported to enable declarations of functions from that
519 TR. Note that not all functions from that TR are supported by the GNU C
522 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
523 18661-1:2014, is supported to enable declarations of functions and macros
524 from that TS. Note that not all features from that TS are supported by
527 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
528 18661-4:2015, is supported to enable declarations of functions and macros
529 from that TS. Note that most features from that TS are not supported by
532 * The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
533 now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
534 Since the GNU C Library defaults to a much newer revision of POSIX, this
535 will only affect programs that specifically request an old conformance
536 mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
537 see a change in the visible declarations, but a program compiled with
538 just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
541 Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
542 defined by all multithreaded code, but glibc has not required this for
545 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
546 means that in a future release, the macros “major”, “minor”, and “makedev”
547 will only be available from <sys/sysmacros.h>.
549 These macros are not part of POSIX nor XSI, and their names frequently
550 collide with user code; see for instance glibc bug 19239 and Red Hat bug
551 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
552 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
555 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
556 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
557 femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
559 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
560 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
561 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
562 <stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
563 INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
564 UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
565 INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
566 UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
567 UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
568 UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
569 UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
572 * New <math.h> features are added from TS 18661-1:2014:
574 - Signaling NaN macros: SNANF, SNAN, SNANL.
576 - Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
577 fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
578 fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
580 - llogb functions: the llogb, llogbf and llogbl functions, and the
581 FP_LLOGB0 and FP_LLOGBNAN macros.
583 - Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
586 - Comparison macros: iseqsig.
588 - Classification macros: iscanonical, issubnormal, iszero.
590 - Total order functions: totalorder, totalorderf, totalorderl,
591 totalordermag, totalordermagf, totalordermagl.
593 - Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
595 - NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
596 setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
598 * The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
599 are added to libc. They convert a floating-point number into string.
601 * Most of glibc can now be built with the stack smashing protector enabled.
602 It is recommended to build glibc with --enable-stack-protector=strong.
603 Implemented by Nick Alcock (Oracle).
605 * The function explicit_bzero, from OpenBSD, has been added to libc. It is
606 intended to be used instead of memset() to erase sensitive data after use;
607 the compiler will not optimize out calls to explicit_bzero even if they
608 are "unnecessary" (in the sense that no _correct_ program can observe the
609 effects of the memory clear).
611 * On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
612 to float instead of double. This does not affect the ABI of any libraries
613 that are part of the GNU C Library, but may affect the ABI of other
614 libraries that use this type in their interfaces.
616 * On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
617 float_t and double_t types are now defined to long double instead of float
618 and double. These options are not the default, and this does not affect
619 the ABI of any libraries that are part of the GNU C Library, but it may
620 affect the ABI of other libraries that use this type in their interfaces,
621 if they are compiled or used with those options.
623 * The getentropy and getrandom functions, and the <sys/random.h> header file
626 * The buffer size for byte-oriented stdio streams is now limited to 8192
627 bytes by default. Previously, on Linux, the default buffer size on most
628 file systems was 4096 bytes (and thus remains unchanged), except on
629 network file systems, where the buffer size was unpredictable and could be
630 as large as several megabytes.
632 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
633 for the Linux quota interface which predates kernel version 2.4.22 has
636 * The malloc_get_state and malloc_set_state functions have been removed.
637 Already-existing binaries that dynamically link to these functions will
638 get a hidden implementation in which malloc_get_state is a stub. As far
639 as we know, these functions are used only by GNU Emacs and this change
640 will not adversely affect already-built Emacs executables. Any undumped
641 Emacs executables, which normally exist only during an Emacs build, should
642 be rebuilt by re-running “./configure; make” in the Emacs build tree.
644 * The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
645 corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
646 “no-ip6-dotint” had already been the default, and support for the
647 “ip6-dotint” option was removed from the Internet in 2006.
649 * The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
650 flag from <resolv.h> have been removed. The option relied on a
651 backwards-incompatible DNS extension which was never deployed on the
654 * The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
655 RES_BLAST defined in the <resolv.h> header file have been deprecated.
656 They were already unimplemented.
658 * The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
659 _res.flags are deprecated. The flag was standardized in RFC 2133, but
660 removed again from the IETF name lookup interface specification in RFC
661 2553. Applications should use getaddrinfo instead.
663 * DNSSEC-related declarations and definitions have been removed from the
664 <arpa/nameser.h> header file, and libresolv will no longer attempt to
665 decode the data part of DNSSEC record types. Previous versions of glibc
666 only implemented minimal support for the previous version of DNSSEC, which
667 is incompatible with the currently deployed version.
669 * The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
670 ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
671 <arpa/nameser.h> header file because the distinction between RR types and
672 meta-RR types is not officially standardized, subject to revision, and
673 thus not suitable for encoding in a macro.
675 * The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
676 and rhook members of the res_state type in <resolv.h> have been removed.
677 The glibc stub resolver did not support these hooks, but the header file
678 did not reflect that.
680 * For multi-arch support it is recommended to use a GCC which has
681 been built with support for GNU indirect functions. This ensures
682 that correct debugging information is generated for functions
683 selected by IFUNC resolvers. This support can either be enabled by
684 configuring GCC with '--enable-gnu-indirect-function', or by
685 enabling it by default by setting 'default_gnu_indirect_function'
686 variable for a particular architecture in the GCC source file
689 * GDB pretty printers have been added for mutex and condition variable
690 structures in POSIX Threads. When installed and loaded in gdb these pretty
691 printers show various pthread variables in human-readable form when read
692 using the 'print' or 'display' commands in gdb.
694 * Tunables feature added to allow tweaking of the runtime for an application
695 program. This feature can be enabled with the '--enable-tunables' configure
696 flag. The GNU C Library manual has details on usage and README.tunables has
697 instructions on adding new tunables to the library.
699 * A new version of condition variables functions have been implemented in
700 the NPTL implementation of POSIX Threads to provide stronger ordering
703 * A new version of pthread_rwlock functions have been implemented to use a more
704 scalable algorithm primarily through not using a critical section anymore to
707 Security related changes:
709 * On ARM EABI (32-bit), generating a backtrace for execution contexts which
710 have been created with makecontext could fail to terminate due to a
711 missing .cantunwind annotation. This has been observed to lead to a hang
712 (denial of service) in some Go applications compiled with gccgo. Reported
713 by Andreas Schwab. (CVE-2016-6323)
715 * The DNS stub resolver functions would crash due to a NULL pointer
716 dereference when processing a query with a valid DNS question type which
717 was used internally in the implementation. The stub resolver now uses a
718 question type which is outside the range of valid question type values.
721 The following bugs are resolved with this release:
723 [4099] stdio: Overly agressive caching by stream i/o functions.
724 [7065] build: Support building glibc with -fstack-protector or -fstack-
726 [9842] localedata: en_CA: incorrect date format
727 [13165] nptl: pthread_cond_wait() can consume a signal that was sent
728 before it started waiting
729 [14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
730 [15765] nptl: sem_open is wrongly a cancellation point
731 [16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
732 [16458] libc: endian.h and netinet/in.h byte order macros return values of
734 [16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
735 library linked with pthread
736 [16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
738 [16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
739 [17252] libc: getrandom and getentropy syscall
740 [17730] malloc: thread-local storage is sometimes improperly free()'d
741 after being __libc_memalign()'d
742 [18241] stdio: failed fseek on memstream does not set errno and can fail
744 [18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
746 [18463] nptl: pthread_cond_broadcast issue when surrounded by
747 PTHREAD_PRIO_INHERIT mutex on ARM
748 [18784] network: res_query and related function crash for special record
749 type queries (CVE-2015-5180)
750 [19380] math: strtod does not raise "inexact"
751 [19387] string: Integer overflow in memchr
752 [19390] string: Integer overflow in strncat
753 [19398] build: linknamespace tests fail with massively parallel build
754 [19402] nptl: Deadlock with robust shared mutex and asynchronous
756 [19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
757 [19473] malloc: Turn malloc_get_state etc. in compatibility symbols
758 [19514] libc: [PATCH] Fix spelling errors in spelling
759 "implement"/"implementation" in several places
760 [19582] network: Deprecate RES_USE_INET6
761 [19673] manual: clog10 docs appear to be erroneous
762 [19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
763 causes a segmentation fault
764 [19826] libc: invalid pointer returned from __tls_get_addr with static
766 [20016] network: resolv: Remove hooks support from the API
767 [20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
769 [20033] math: [x86_64] vectorized math function don't call the __finite
771 [20116] nptl: use after free in pthread_create
772 [20181] stdio: open_memstream(): writes not at end of stream corrupt data
773 [20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
775 [20311] nptl: please install proc_service.h
776 [20366] libc: Compilation errors in installed headers in strict-compliance
778 [20370] malloc: malloc: Arena free list management is still racy
779 (incorrect fix in bug 19243)
780 [20386] libc: assert (X = 0) does not result in GCC warning
781 [20432] malloc: malloc: Minimize interface required for interposition
782 [20435] libc: Missing unwind info in __startcontext causes infinite loop
783 in _Unwind_Backtrace (CVE-2016-6323)
784 [20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
785 [20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
787 [20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
788 [20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
789 [20477] network: resolv: incorrect double-checked locking related to
791 [20478] libc: libc_ifunc macro and similar usages leads to false debug-
793 [20495] math: x86_64 performance degradation due to AVX/SSE transition
795 [20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
796 [20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
797 cause transition penalty
798 [20517] math: sparcv9 missing fdiml compat symbol
799 [20524] manual: strverscmp is inconsistent
800 [20525] libc: <sys/quota.h> should be based on kernel headers
801 [20539] math: GCC 7 -static -lm fails to link at -O3
802 [20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
804 [20558] string: POSIX bcopy/bzero decls do not implement Object Size
806 [20591] network: Remove obsolete DNSSEC support
807 [20592] network: DNS resource record type classification macros in
808 <arpa/nameser.h> are incorrect
809 [20593] network: Update DNS RR type definitions
810 [20611] network: getaddrinfo accepts invalid numeric scope IDs
811 [20615] build: glibc build fails when using --with-cpu=power9 --enable-
813 [20629] network: libresolv: Remove support for bitstring labels
815 [20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
816 assertion: "maxidx >= 2"
817 [20660] math: [arm] Use VSQRT
818 [20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
819 -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
820 [20689] libc: Test for FMA should also check for AVX.
821 [20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
822 [20715] math: iszero macro breaks existing code
823 [20718] math: [powerpc] copysignl raises "invalid" for sNaN
824 [20728] libc: powerpc: Missing TOC stub in clone
825 [20729] build: glibc-2.24 fails to build for i486 with -Os
826 [20750] build: Build fails with default PIE enabled gcc-6.x
827 [20768] math: [alpha] sqrt fegetenv namespace
828 [20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
830 [20787] math: float_t is defined as float incorrectly on x86_64 even if
831 __FLT_EVAL_METHOD__ is 2
832 [20790] network: rpcgen buffer overrun in get_prog_declaration
833 [20822] nptl: race condition in __lll_unlock_elision on powerpc
834 [20829] libc: crypt snprintf namespace
835 [20847] libc: tst-vfork3 failure
836 [20855] math: Default bits/mathdef.h has inappropriate float_t
837 [20859] math: [sh4] FP_ILOGB0 invalid
838 [20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
839 U+20AC), not same as GBK
840 [20915] dynamic-link: global-dynamic TLS broken on aarch64
841 [20916] math: pow handling of sNaN arguments
842 [20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
843 [20919] math: Bad pow (qNaN, 0) result with -lieee
844 [20940] math: hypot sNaN handling
845 [20947] math: fmax, fmin sNaN handling
846 [20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
847 [20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
849 [20971] string: powerpc64/power7 memchr overflows internal pointer check
850 [20973] nptl: robust mutexes: Lost wake-ups
851 [20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
852 [20978] nis: strlen on null pointer in nss_nisplus
853 [20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
855 [21014] string: i686 memchr overflows internal pointer check
856 [21019] libc: [mips] n32 lseek incorrect on overflow
857 [21022] libc: [microblaze] __backtrace get_frame_size namespace
858 [21026] libc: [MIPS] readahead syscall is broken on n64
859 [21028] math: Fallback fesetexceptflag should always succeed
860 [21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
861 [21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
863 [21053] libc: [SH] Namespace pollution from sys/ucontext.h
864 [21061] librt: [microblaze] librt lost clock_* exports
865 [21073] libc: tunables: insecure environment variables passed to
866 subprocesses with AT_SECURE
867 [21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
871 * The minimum Linux kernel version that this version of the GNU C Library
872 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
873 kernel version 2.6.32 or later suffices (on architectures that already
874 required kernel versions more recent than 3.2, those requirements remain
875 unchanged). Linux 3.2 or later kernel headers are required on all
878 * The pap_AN locale has been deleted. This has been deprecated for a long
879 time. It has been replaced by pap_AW & pap_CW, both of which have long
880 been included in previous releases.
882 * The readdir_r and readdir64_r functions have been deprecated. It is
883 recommended to use readdir and readdir64 instead.
885 * The type “union wait” has been removed. It was deprecated in the early
886 1990s and never part of POSIX. Application code should use the int type
887 instead of “union wait”.
889 * A new NSS action is added to facilitate large distributed system
890 administration. The action, MERGE, allows remote user stores like LDAP
891 to be merged into local user stores like /etc/groups in order to provide
892 easy to use, updated, and managed sets of merged credentials. The new
893 action can be used by configuring it in /etc/nsswitch.conf:
894 group: files [SUCCESS=merge] nis
895 Implemented by Stephen Gallagher (Red Hat).
897 * The deprecated __malloc_initialize_hook variable has been removed from the
900 * The long unused localedef --old-style option has been removed. It hasn't
901 done anything in over 16 years. Scripts using this option can safely
904 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
905 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
906 return the next representable value in the direction of positive infinity
907 and the nextdown functions return the next representable value in the
908 direction of negative infinity. These are currently enabled as GNU
911 Security related changes:
913 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
914 could result in a stack overflow when getnetbyname was called with an
915 overly long name. (CVE-2016-3075)
917 * Previously, getaddrinfo copied large amounts of address data to the stack,
918 even after the fix for CVE-2013-4458 has been applied, potentially
919 resulting in a stack overflow. getaddrinfo now uses a heap allocation
920 instead. Reported by Michael Petlan. (CVE-2016-3706)
922 * The glob function suffered from a stack-based buffer overflow when it was
923 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
924 Reported by Alexander Cherepanov. (CVE-2016-1234)
926 * The Sun RPC UDP client could exhaust all available stack space when
927 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
928 alloca plugin for GCC. (CVE-2016-4429)
930 * The IPv6 name server management code in libresolv could result in a memory
931 leak for each thread which is created, performs a failing naming lookup,
932 and exits. Over time, this could result in a denial of service due to
933 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
935 The following bugs are resolved with this release:
937 [1170] localedata: ne_NP: update Nepali locale definition file
938 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
940 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
941 [6796] math: fdim() does not set errno on overflow
942 [10354] libc: posix_spawn should use vfork() in more cases than presently
943 [11213] localedata: localedata: add copyright disclaimer to locale files
944 [12143] localedata: chr_US: new Cherokee locale
945 [12450] localedata: sgs_LT: new locale
946 [12676] localedata: ln_CD: new locale
947 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
949 [13304] math: fma, fmaf, fmal produce wrong results
950 [14259] build: --localedir arg to configure is ignored
951 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
952 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
953 [14934] localedata: es_CL: wrong first weekday chilean locale
954 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
956 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
958 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
959 [15368] nptl: raise() is not async-signal-safe
960 [15479] math: ceil, floor, round and trunc raise inexact exception
961 [15578] localedata: kk_KZ: various updates
962 [16003] localedata: pap_AN: punt old locale
963 [16137] localedata: iw_IL: punt old locale
964 [16190] localedata: eo: new esperanto locale
965 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
966 [16742] malloc: race condition: pthread_atfork() called before first
967 malloc() results in unexpected locking behaviour/deadlocks
968 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
970 [16983] localedata: postal_fmt does not allow %l and %n modifiers
971 [17565] localedata: pt_PT: wrong (work-)week start
972 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
973 [17950] build: Build fails with -msse
974 [18205] localedata: be_BY*: wrong first_weekday and first_workday
975 [18433] libc: posix_spawn does not return correctly upon failure to
977 [18453] localedata: charmaps/IBM875: incorrect codes
978 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
980 [18896] localedata: he_IL: improvements for currency
981 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
983 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
985 [19056] libc: Deprecate readdir_r
986 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
988 [19198] localedata: nl_NL: small improvements for Dutch locales
989 [19257] network: Per-thread memory leak in __res_vinit with IPv6
990 nameservers (CVE-2016-5417)
991 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
993 [19400] locale: Language missing in "iso-639.def", trivial fix in
995 [19431] malloc: Deadlock between fflush, getdelim, and fork
996 [19505] libc: Incorrect file descriptor validity checks in
997 posix_spawn_file_actions_add{open,close,dup2}
998 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
1000 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
1001 `intl/{gettextP,loadinfo}.h'
1002 [19534] libc: execle, execlp may use malloc
1003 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
1004 [19573] network: res_nclose and __res_maybe_init disagree about name
1005 server initialization, breaking Hesiod
1006 [19575] localedata: Status of GB18030 tables
1007 [19581] localedata: sr_* date_fmt string contains additional newline
1008 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
1010 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
1011 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
1012 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
1013 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
1015 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
1017 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
1019 [19610] dynamic-link: ldconfig -X removes stale symbolic links
1020 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
1021 [19633] locale: strfmon_l applies global locale to number formatting
1022 [19642] network: Memory leak in getnameinfo
1023 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
1024 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
1026 [19654] math: [x86_64] Need testcase for BZ #19590 fix
1027 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
1029 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
1030 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
1032 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
1034 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
1036 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
1037 pointers and lengths in error-case.
1038 [19727] locale: Converting from/to UTF-xx with iconv() does not always
1039 report errors on UTF-16 surrogates values.
1040 [19755] nscd: nscd assertion failure in gc
1041 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
1042 [19759] libc: mempcpy shouldn't be inlined
1043 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
1044 [19765] libc: s390 needs an optimized mempcpy
1045 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
1046 NAME_MAX limit assumption (CVE-2016-1234)
1047 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
1048 [19787] network: Missing and incorrect truncation checks in getnameinfo
1049 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
1051 [19791] network: Assertion failure in res_query.c with un-connectable name
1053 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
1054 [19822] math: libm.so install clobbers old version
1055 [19825] network: resolv: send_vc can return uninitialized data in second
1056 response to getaddrinfo
1057 [19830] network: nss_dns: should check RDATA length against buffer length
1058 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
1059 confronted with A/AAAA records of invalid size
1060 [19837] nss: nss_db: No retries for some long lines with a larger buffer
1061 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
1062 [19853] stdio: Printing IBM long double in decimal with high precision is
1064 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
1065 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
1066 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
1068 [19865] network: Assertion failure or memory leak in
1069 _nss_dns_getcanonname_r
1070 [19868] network: nss_dns: netent code does not skip over non-PTR records
1071 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
1073 [19881] string: Improve x86-64 memset
1074 [19907] string: Incorrect memcpy tests
1075 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
1077 [19925] libc: termios.h XCASE namespace
1078 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
1079 [19929] libc: limits.h NL_NMAX namespace
1080 [19931] stdio: Memory leak in vfprintf
1081 [19957] libc: clone(CLONE_VM) access invalid parent memory
1082 [19963] localedata: en_IL: New locale
1083 [19989] stdio: stdio.h cuserid namespace
1084 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
1086 [19996] locale: langinfo.h nl_langinfo_l namespace
1087 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
1088 [20010] network: getaddrinfo: Stack overflow in hostent translation
1090 [20012] stdio: libio: fmemopen append mode failure
1091 [20014] stdio: stdio.h namespace for pre-threads POSIX
1092 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
1093 [20023] libc: fcntl.h timespec namespace
1094 [20024] math: [x86_64] vectorized sincos trashes the stack
1095 [20031] network: nss_hesiod: Heap overflow in get_txt_records
1096 [20041] time: sys/time.h timespec namespace
1097 [20043] libc: unistd.h missing cuserid for UNIX98 and before
1098 [20044] libc: unistd.h missing pthread_atfork for UNIX98
1099 [20051] libc: ttyslot in wrong header under wrong conditions
1100 [20054] libc: gethostname not declared for XPG4
1101 [20055] libc: termios.h missing tcgetsid for XPG4
1102 [20072] dynamic-link: x86 init_cpu_features is called twice in static
1104 [20073] libc: sys/stat.h fchmod namespace
1105 [20074] libc: stdlib.h rand_r namespace
1106 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
1107 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
1109 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
1110 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
1112 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
1113 [20119] libc: Wrong mask for processors level type from CPUID
1114 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
1115 AS not supporting AVX512
1116 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
1118 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
1119 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
1121 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
1122 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
1123 [20178] libc: posix_spawn{p} should not call exit
1124 [20191] stdio: libio: vtables hardening
1125 [20195] string: FMA4 detection requires CPUID execution with register
1127 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
1128 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
1130 [20212] math: acos (sNaN) returns sNaN
1131 [20213] math: asin (sNaN) returns sNaN
1132 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
1133 [20218] math: [i386] asinhl (sNaN) returns sNaN
1134 [20219] math: [i386] atanhl (sNaN) returns sNaN
1135 [20222] stdio: fopencookie: Mangle function pointers
1136 [20224] math: [i386] cbrtl (sNaN) returns sNaN
1137 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
1138 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
1140 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
1141 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
1142 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
1143 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
1144 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
1145 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
1146 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
1147 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
1148 [20240] math: modf (sNaN) returns sNaN
1149 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
1150 [20250] math: frexp (sNaN) returns sNaN
1151 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
1152 [20255] math: [i386] fdim, fdimf return with excess range and precision /
1154 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
1155 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
1156 subscript is below array bounds [-Werror=array-bounds]
1157 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
1158 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
1160 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
1161 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
1163 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
1164 "invalid" exceptions
1165 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
1166 [20316] localedata: id_ID: Februari instead of Pebruari
1167 [20327] string: POWER8 strcasecmp returns incorrect result
1168 [20347] math: Failure: Test: j0_downward (0xap+0)
1169 [20348] libc: FAIL: misc/tst-preadvwritev64
1170 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
1171 [20350] libc: There is no test for p{read,write}64
1172 [20357] math: Incorrect cos result for 1.5174239687223976
1173 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
1177 * Unicode 8.0.0 Support: Character encoding, character type info, and
1178 transliteration tables are all updated to Unicode 8.0.0, using new
1179 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
1180 These updates cause user visible changes, such as the fixes for bugs
1181 89, 16061, and 18568.
1183 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
1184 kernel-internal CPU set size. This means that requests that change the
1185 CPU affinity which failed before (for example, an all-ones CPU mask) will
1186 now succeed. Applications that need to determine the effective CPU
1187 affinities need to call sched_getaffinity or pthread_getaffinity_np after
1188 setting it because the kernel can adjust it (and the previous size check
1189 would not detect this in the majority of cases).
1191 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
1192 the following new symbols are used: fts64_children, fts64_close,
1193 fts64_open, fts64_read and fts64_set.
1195 * getaddrinfo now detects certain invalid responses on an internal netlink
1196 socket. If such responses are received, an affected process will
1197 terminate with an error message of "Unexpected error <number> on netlink
1198 descriptor <number>" or "Unexpected netlink response of size <number> on
1199 descriptor <number>". The most likely cause for these errors is a
1200 multi-threaded application which erroneously closes and reuses the netlink
1201 file descriptor while it is used by getaddrinfo.
1203 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
1204 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
1205 unnecessary serialization of memory allocation requests across threads.
1206 The defect is now corrected. Users should see a substantial increase in
1207 the concurent throughput of allocation requests for applications which
1208 trigger this bug. Affected applications typically create and
1209 destroy threads frequently. (Bug 19048 was reported and analyzed by
1212 * There is now a --disable-timezone-tools configure option for disabling the
1213 building and installing of the timezone related utilities (zic, zdump, and
1214 tzselect). This is useful for people who build the timezone data and code
1215 independent of the GNU C Library.
1217 * The obsolete header <regexp.h> has been removed. Programs that require
1218 this header must be updated to use <regex.h> instead.
1220 * The obsolete functions bdflush, create_module, get_kernel_syms,
1221 query_module and uselib are no longer available to newly linked binaries;
1222 the header <sys/kdaemon.h> has been removed. These functions and header
1223 were specific to systems using the Linux kernel and could not usefully be
1224 used with the GNU C Library on systems with version 2.6 or later of the
1227 * Optimized string, wcsmbs and memory functions for IBM z13.
1228 Implemented by Stefan Liebler.
1230 * Newly linked programs that define a variable called signgam will no longer
1231 have it set by the lgamma, lgammaf and lgammal functions. Programs that
1232 require signgam to be set by those functions must ensure that they use the
1233 variable provided by the GNU C Library and declared in <math.h>, without
1234 defining their own copy.
1236 * The minimum GCC version that can be used to build this version of the GNU
1237 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
1238 still be used to compile programs using the GNU C Library.
1240 Security related changes:
1242 * An out-of-bounds value in a broken-out struct tm argument to strftime no
1243 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
1245 * The LD_POINTER_GUARD environment variable can no longer be used to disable
1246 the pointer guard feature. It is always enabled. Previously,
1247 LD_POINTER_GUARD could be used to disable security hardening in binaries
1248 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
1251 * An integer overflow in hcreate and hcreate_r could lead to an
1252 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
1254 * The catopen function no longer has unbounded stack usage. Reported by
1255 Max. (CVE-2015-8779)
1257 * The nan, nanf and nanl functions no longer have unbounded stack usage
1258 depending on the length of the string passed as an argument to the
1259 functions. Reported by Joseph Myers. (CVE-2014-9761)
1261 * A stack-based buffer overflow was found in libresolv when invoked from
1262 libnss_dns, allowing specially crafted DNS responses to seize control
1263 of execution flow in the DNS client. The buffer overflow occurs in
1264 the functions send_dg (send datagram) and send_vc (send TCP) for the
1265 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
1266 family. The use of AF_UNSPEC triggers the low-level resolver code to
1267 send out two parallel queries for A and AAAA. A mismanagement of the
1268 buffers used for those queries could result in the response of a query
1269 writing beyond the alloca allocated buffer created by
1270 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
1271 the overflow. Thanks to the Google Security Team and Red Hat for
1272 reporting the security impact of this issue, and Robert Holiday of
1273 Ciena for reporting the related bug 18665. (CVE-2015-7547)
1275 The following bugs are resolved with this release:
1277 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
1278 [887] math: Math library function "logb" and "nextafter" inconsistent
1279 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
1280 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
1281 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
1282 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
1284 [4404] localedata: German translation of "Alarm clock" is misleading
1285 [6799] math: nextafter() and nexttoward() doen't set errno on
1286 overflow/underflow errors
1287 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
1289 [10432] nis: _nss_nis_setnetgrent assertion failure
1290 [11460] libc: fts has no LFS support
1291 [12926] network: getaddrinfo()/make_request() may spin forever
1292 [13065] nptl: Race condition in pthread barriers
1293 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
1294 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
1296 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
1297 [14912] libc: Rename non-installed bits/*.h headers
1298 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
1299 [15367] math: Let gcc use __builtin_isinf
1300 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
1301 [15421] math: lgamma wrongly sets signgam for ISO C
1302 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
1303 FE_INVALID with argument out of range
1304 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
1306 [15786] dynamic-link: ifunc resolver functions can smash function
1308 [15918] math: Unnecessary check for equality in hypotf()
1309 [16061] localedata: Review / update transliteration data
1310 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
1312 [16141] time: strptime %z offset restriction
1313 [16171] math: drem should be alias of remainder
1314 [16296] math: fegetround is pure?
1315 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
1316 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
1318 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
1319 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
1321 [16422] math: [powerpc] math-float, math-double failing llrint tests with
1322 "Exception "Inexact" set" on ppc32
1323 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
1324 [16517] math: Missing underflow exception from tanf/tan/tanl
1325 [16519] math: Missing underflow exception from sinhf
1326 [16520] math: Missing underflow exception from tanhf
1327 [16521] math: Missing underflow exception from exp2
1328 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
1330 [16734] stdio: fopen calls mmap to allocate its buffer
1331 [16961] math: nan function incorrect handling of bad sequences
1332 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
1333 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
1334 [16985] locale: localedef: confusing error message when opening output
1336 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
1337 [17197] locale: Redundant shift character in iconv conversion output at
1339 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
1340 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
1341 [17250] dynamic-link: static linking breaks nss loading
1342 (getaddrinfo/getpwnam/etc...)
1343 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
1345 [17441] math: isnan() should use __builtin_isnan() in GCC
1346 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
1347 (related to lock elision)
1348 [17787] manual: Exponent on page 324 of the PDF ends prematurely
1349 [17886] time: strptime should be able to parse "Z" as a timezone with %z
1350 [17887] time: strptime should be able to parse "+01:00" style timezones
1351 [17905] libc: catopen() Multiple unbounded stack allocations
1353 [18084] libc: backtrace (..., 0) dumps core on x86
1354 [18086] libc: nice() sets errno to 0 on success
1355 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
1356 is too large (CVE-2015-8778)
1357 [18251] dynamic-link: SONAME missing when audit modules provides path
1358 [18265] libc: add attributes for wchar string and memory functions
1359 [18370] math: csqrt missing underflows
1360 [18421] libc: [hppa] read-only segment has dynamic relocations
1361 [18472] libc: Obsolete syscall wrappers should be compat symbols
1362 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
1363 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
1364 [18525] localedata: Remove locale timezone information
1365 [18560] libc: [powerpc] spurious bits/ipc.h definitions
1366 [18568] localedata: Update locale data to Unicode 8.0
1367 [18589] locale: sort-test.sh fails at random
1368 [18595] math: ctan, ctanh missing underflows
1369 [18604] libc: assert macro-expands its argument
1370 [18610] math: S390: fetestexcept() reports any exception if DXC-code
1371 contains a vector instruction exception.
1372 [18611] math: j1, jn missing errno setting on underflow
1373 [18618] localedata: sync Chechen locale definitions with other *_RU
1375 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
1376 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
1377 [18665] network: In send_dg, the recvfrom function is NOT always using the
1378 buffer size of a newly created buffer (CVE-2015-7547)
1379 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
1381 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
1383 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
1384 [18699] math: tilegx cproj() for various complex infinities does not yield
1386 [18724] libc: Harden put*ent functions against data injection
1387 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
1388 [18755] build: build errors with -DNDEBUG
1389 [18757] stdio: fmemopen fails to set errno on failure
1390 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
1392 [18781] libc: openat64 lacks O_LARGEFILE
1393 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
1394 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
1395 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
1396 [18790] math: [ldbl-128ibm] tanhl inaccurate
1397 [18795] libc: stpncpy fortification misses buffer lengths that are
1398 statically too large
1399 [18796] build: build fails for --disable-mathvec
1400 [18803] math: hypot missing underflows
1401 [18820] stdio: fmemopen may leak memory on failure
1402 [18823] math: csqrt spurious underflows
1403 [18824] math: fma spurious underflows
1404 [18825] math: pow missing underflows
1405 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
1406 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
1407 [18870] build: sem_open.c fails to compile with missing symbol
1409 [18872] stdio: Fix memory leak in printf_positional
1410 [18873] libc: posix_fallocate overflow check ineffective
1411 [18875] math: Excess precision leads incorrect libm
1412 [18877] libc: arm: mmap offset regression
1413 [18887] libc: memory corruption when using getmntent on blank lines
1414 [18918] localedata: hu_HU: change time to HH:MM:SS format
1415 [18921] libc: Regression: extraneous stat() and fstat() performed by
1417 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
1418 binaries (CVE-2015-8777)
1419 [18951] math: tgamma missing underflows
1420 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
1422 [18953] localedata: lt_LT: change currency symbol to the euro
1423 [18956] math: powf inaccuracy
1424 [18961] math: [i386] exp missing underflows
1425 [18966] math: [i386] exp10 missing underflows
1426 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
1427 [18969] build: multiple string test failures due to missing locale
1429 [18970] libc: Reference of pthread_setcancelstate in libc.a
1430 [18977] math: float / long double Bessel functions not in XSI POSIX
1431 [18980] math: i386 libm functions return with excess range and precision
1432 [18981] math: i386 scalb*, ldexp return with excess range and precision
1433 [18982] stdio: va_list and vprintf
1434 [18985] time: Passing out of range data to strftime() causes a segfault
1436 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
1437 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
1438 [19012] locale: iconv_open leaks memory on error path
1439 [19016] math: clog, clog10 inaccuracy
1440 [19018] nptl: Mangle function pointers in tls_dtor_list
1441 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
1442 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
1443 [19048] malloc: malloc: arena free list can become cyclic, increasing
1445 [19049] math: [powerpc] erfc incorrect zero sign
1446 [19050] math: [powerpc] log* incorrect zero sign
1447 [19058] math: [x86_64] Link fail with -fopenmp and -flto
1448 [19059] math: nexttoward overflow incorrect in non-default rounding modes
1449 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
1450 [19074] network: Data race in _res_hconf_reorder_addrs
1451 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
1452 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
1453 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
1455 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
1457 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
1458 [19086] manual: posix_fallocate64 documented argument order is wrong.
1459 [19088] math: lround, llround missing exceptions close to overflow
1461 [19094] math: lrint, llrint missing exceptions close to overflow threshold
1462 [19095] math: dbl-64 lrint incorrect for 64-bit long
1463 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
1464 [19124] dynamic-link: ld.so failed to build with older assmebler
1465 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
1466 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
1467 [19134] math: [powerpc32] lround, lroundf spurious exceptions
1468 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
1469 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
1470 pthread_setaffinity_np
1471 [19156] math: [ldbl-128] j0l spurious underflows
1472 [19164] nptl: tst-getcpu fails with many possible CPUs
1473 [19168] math: math/test-ildoubl and math/test-ldouble failure
1474 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
1475 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
1477 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
1478 (FE_NOMASK_ENV) do not clear SSE exceptions
1479 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
1480 _int_new_arena/reused_arena
1481 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
1482 [19201] math: dbl-64 remainder incorrect sign of zero result
1483 [19205] math: bits/math-finite.h conditions do not match math.h and
1485 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
1486 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
1487 for C99-based standards
1488 [19212] libc: features.h not -Wundef clean
1489 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
1491 [19214] libc: Family and model identification for AMD CPU's are incorrect.
1492 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
1493 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
1495 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
1496 "inexact" exceptions
1497 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
1499 [19242] libc: strtol incorrect in Turkish locales
1500 [19243] malloc: reused_arena can pick an arena on the free list, leading
1501 to an assertion failure and reference count corruption
1502 [19253] time: tzset() ineffective when temporary TZ did not include DST
1504 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
1505 [19270] math: [hppa] Shared libm missing __isnanl
1506 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
1507 MAP_HUGETLB and MAP_STACK defines
1508 [19313] nptl: Wrong __cpu_mask for x32
1509 [19347] libc: grantpt: try to force a specific gid even without pt_chown
1510 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
1511 [19350] math: [ldbl-128ibm] sinhl spurious overflows
1512 [19351] math: [ldbl-128ibm] logl inaccurate near 1
1513 [19363] time: x32: times() return value wrongly truncates/sign extends
1515 [19367] dynamic-link: Improve branch prediction on Silvermont
1516 [19369] network: Default domain name not reset by res_ninit when "search"
1517 / "domain" entry is removed from resolv.conf
1518 [19375] math: powerpc: incorrect results for POWER7 logb with negative
1520 [19385] localedata: bg_BG: time separator should be colon, not comma
1521 [19408] libc: linux personality syscall wrapper may erroneously return an
1522 error on 32-bit architectures
1523 [19415] libc: dladdr returns wrong names on hppa
1524 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
1525 IBM905, IBM907, and IBM909
1526 [19439] math: Unix98 isinf and isnan functions conflict with C++11
1527 [19443] build: build failures with -DDEBUG
1528 [19451] build: Make check fails on test-double-vlen2
1529 [19462] libc: Glibc failed to build with -Os
1530 [19465] math: Wrong code with -Os
1531 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
1533 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
1535 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
1536 [19486] math: S390: Math tests fail with "Exception Inexact set".
1537 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
1538 [19550] libc: [mips] mmap negative offset handling inconsistent with other
1540 [19590] math: Fail to build shared objects that use libmvec.so functions.
1544 * The following bugs are resolved with this release:
1546 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
1547 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
1548 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
1549 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
1550 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
1551 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
1552 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
1553 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
1554 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
1555 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
1556 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
1557 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
1558 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
1559 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
1560 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
1561 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
1562 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
1563 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
1564 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
1565 18657, 18676, 18694, 18696, 18887.
1567 * Cache information can be queried via sysconf() function on s390 e.g. with
1568 _SC_LEVEL1_ICACHE_SIZE as argument.
1570 * A buffer overflow in gethostbyname_r and related functions performing DNS
1571 requests has been fixed. If the NSS functions were called with a
1572 misaligned buffer, the buffer length change due to pointer alignment was
1573 not taken into account. This could result in application crashes or,
1574 potentially arbitrary code execution, using crafted, but syntactically
1575 valid DNS responses. (CVE-2015-1781)
1577 * The time zone file parser has been made more robust against crafted time
1578 zone files, avoiding heap buffer overflows related to the processing of
1579 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
1580 large time zone data files. Overly long time zone specifiers in the TZ
1581 variable no longer result in stack overflows and crashes.
1583 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
1584 for LD and GD on x86 and x86-64, has been implemented. You will need
1585 binutils-2.24 or later to enable this optimization.
1587 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
1588 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
1589 Hat). These updates cause user visible changes, such as the fix for bug
1592 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
1593 and getXXbyYY NSS calls for the same database, causing a denial-of-service
1594 condition in some applications.
1596 * Added vector math library named libmvec with the following vectorized x86_64
1597 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
1599 The library can be disabled with --disable-mathvec. Use of the functions is
1600 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
1601 Shared library libmvec.so is linked in as needed when using -lm (no need to
1602 specify -lmvec explicitly for not static builds).
1603 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
1605 * A new fmemopen implementation has been added with the goal of POSIX
1606 compliance. The new implementation fixes the following long-standing
1607 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
1608 old implementation is still present for use be by existing binaries.
1610 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
1611 releases. It has been fixed to match 2.19 and older, but binaries built
1612 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
1614 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
1615 Contributed by Roland McGrath (Google).
1617 * The header <regexp.h> is deprecated, and will be removed in a future
1618 release. Use of this header will trigger a deprecation warning.
1619 Application developers should update their code to use <regex.h> instead.
1621 This header was formerly part of SUS, but was deprecated in 1994 and
1622 removed from the standard in 2001. Also, the glibc implementation
1623 leaks memory. See BZ#18681 for more details.
1627 * The following bugs are resolved with this release:
1629 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
1630 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
1631 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
1632 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
1633 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
1634 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
1635 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
1636 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
1637 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
1638 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
1641 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
1642 too little memory for the to-be-scanned arguments and overflow the
1643 allocated buffer. The implementation now correctly computes the required
1644 buffer size when using malloc, and switches to malloc from alloca as
1647 * A new semaphore algorithm has been implemented in generic C code for all
1648 machines. Previous custom assembly implementations of semaphore were
1649 difficult to reason about or ensure that they were safe. The new version
1650 of semaphore supports machines with 64-bit or 32-bit atomic operations.
1651 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
1652 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
1654 * Port to Altera Nios II has been contributed by Mentor Graphics.
1656 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
1657 implementations for powerpc64/powerpc64le.
1658 Implemented by Adhemerval Zanella (IBM).
1660 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
1661 and powerpc64le. This may improve lock scaling of existing programs on
1662 HTM capable systems. The lock elision code is only enabled with
1663 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
1664 powerpc will issue a transaction abort on every syscall to avoid side
1665 effects being visible outside transactions.
1667 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
1668 AArch64. Contributed by ARM Ltd.
1670 * i386 memcpy functions optimized with SSE2 unaligned load/store.
1672 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
1673 under certain input conditions resulting in the execution of a shell for
1674 command substitution when the application did not request it. The
1675 implementation now checks WRDE_NOCMD immediately before executing the
1676 shell and returns the error WRDE_CMDSUB as expected.
1678 * CVE-2012-3406 printf-style functions could run into a stack overflow when
1679 processing format strings with a large number of format specifiers.
1681 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
1682 infinite loop if the DNS response contained a PTR record of an unexpected
1685 * The minimum GCC version that can be used to build this version of the GNU
1686 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
1687 still be used to compile programs using the GNU C Library.
1689 * The GNU C Library is now built with -Werror by default. This can be
1690 disabled by configuring with --disable-werror.
1692 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
1694 * The obsolete sigvec function has been removed. This was the original
1695 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
1696 programs have been using instead for about 25 years. Of course, ABI
1697 compatibility for old binaries using sigvec remains intact.
1699 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
1700 with newer versions of bison.
1702 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
1703 The original MIPS o32 hard-float ABI requires an FPU where double-precision
1704 registers overlay two consecutive single-precision registers. MIPS32R2
1705 introduced a new FPU mode (FR=1) where double-precision registers extend the
1706 corresponding single-precision registers which is incompatible with the
1707 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
1708 require the use of FR=1 making a transition necessary. New o32 ABI
1709 extensions enable users to migrate over time from the original o32 ABI
1710 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
1711 tracks the ABI of any loaded object and verifies that new objects are
1712 compatible. Mode transitions will also be requested as required and
1713 unsupportable objects will be rejected. The ABI checks include both soft and
1714 hard float ABIs for o32, n32 and n64.
1716 GCC 5 with GNU binutils 2.25 onwards:
1717 It is strongly recommended that all o32 system libraries are built using the
1718 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
1719 with the original and all new o32 ABI extensions. Configure a MIPS GCC
1720 compiler using --with-fp-32=xx to set this by default.
1724 * The following bugs are resolved with this release:
1726 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
1727 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
1728 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
1729 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
1730 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
1731 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
1732 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
1733 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
1734 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
1735 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
1736 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
1737 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
1738 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
1739 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
1740 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
1742 * Reverted change of ABI data structures for s390 and s390x:
1743 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
1744 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
1745 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
1746 are preserved pointing straight to the same implementation as the old ones.
1747 Given that, new callers will simply provide a too-big buffer to these
1748 functions. Any applications/libraries out there that embed jmp_buf or
1749 ucontext_t in an ABI-relevant data structure that have already been rebuilt
1750 against 2.19 headers will have to rebuilt again. This is necessary in any
1751 case to revert the breakage in their ABI caused by the glibc change.
1753 * Support for file description locks is added to systems running the
1754 Linux kernel. The standard file locking interfaces are extended to
1755 operate on file descriptions, not file descriptors, via the use of
1756 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
1757 are associated with an open file instead of a process.
1759 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
1761 * The minimum Linux kernel version that this version of the GNU C Library
1762 can be used with is 2.6.32.
1764 * Running the testsuite no longer terminates as soon as a test fails.
1765 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
1766 with PASS or FAIL lines for individual tests. A summary of the results is
1767 printed, including a list of failing lists, and "make check" exits with
1768 error status if there were any unexpected failures. "make check
1769 stop-on-test-failure=y" may be used to keep the old behavior.
1771 * The am33 port, which had not worked for several years, has been removed
1774 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
1775 supported; they now act the same as _DEFAULT_SOURCE (but generate a
1776 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
1777 conflicted with POSIX (support for which was removed in 2.19), the
1778 interfaces those macros enabled remain available when compiling with
1779 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
1780 test macros defined.
1782 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
1784 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
1785 This may improve lock scaling of existing programs on TX capable systems.
1786 The lock elision code is only built with --enable-lock-elision=yes and
1787 then requires a GCC version supporting the TX builtins. With lock elision
1788 default mutexes are elided via __builtin_tbegin, if the cpu supports
1789 transactions. By default lock elision is not enabled and the elision code
1792 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
1793 copy the path argument. This allowed programs to cause posix_spawn to
1794 deference a dangling pointer, or use an unexpected pathname argument if
1795 the string was modified after the posix_spawn_file_actions_addopen
1798 * All supported architectures now use the main glibc sysdeps directory
1799 instead of some being in a separate "ports" directory (which was
1800 distributed separately before glibc 2.17).
1802 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
1803 On configurations that support it (all Linux configurations), it's now
1804 used regardless of the --enable-add-ons switch to configure. It is no
1805 longer possible to build such configurations without pthreads support.
1807 * Locale names, including those obtained from environment variables (LANG
1808 and the LC_* variables), are more tightly checked for proper syntax.
1809 setlocale will now fail (with EINVAL) for locale names that are overly
1810 long, contain slashes without starting with a slash, or contain ".." path
1811 components. (CVE-2014-0475) Previously, some valid locale names were
1812 silently replaced with the "C" locale when running in AT_SECURE mode
1813 (e.g., in a SUID program). This is no longer necessary because of the
1816 * On x86-64, the dynamic linker's lazy-binding support is now compatible
1817 with application code using Intel MPX instructions. (With all previous
1818 versions, the MPX register state could be clobbered when making calls
1819 into or out of a shared library.) Note that while the new dynamic
1820 linker is compatible with all known x86 hardware whether or not it
1821 supports Intel MPX, some x86 instruction-set emulators might fail to
1822 handle the new instruction encodings. This is known to affect Valgrind
1823 versions up through 3.9 (but will be fixed in the forthcoming 3.10
1824 release), and might affect other tools that do instruction emulation.
1826 * Support for loadable gconv transliteration modules has been removed.
1827 The support for transliteration modules has been non-functional for
1828 over a decade, and the removal is prompted by security defects. The
1829 normal gconv conversion modules are still supported. Transliteration
1830 with //TRANSLIT is still possible, and the //IGNORE specifier
1831 continues to be supported. (CVE-2014-5119)
1833 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
1834 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
1835 resulting a denial-of-service security vulnerability in applications which
1836 use functions related to iconv. (CVE-2014-6040)
1840 * The following bugs are resolved with this release:
1842 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
1843 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
1844 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
1845 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
1846 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
1847 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
1848 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
1849 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
1850 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
1851 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
1852 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
1853 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
1854 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
1855 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
1856 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
1857 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
1858 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
1859 16431, 16453, 16474, 16506, 16510, 16529
1861 * Slovenian translations for glibc messages have been contributed by the
1862 Translation Project's Slovenian team of translators.
1864 * The public headers no longer use __unused nor __block. This change is to
1865 support compiling programs that are derived from BSD sources and use
1866 __unused internally, and to support compiling with Clang's -fblock
1867 extension which uses __block.
1869 * CVE-2012-4412 The strcoll implementation caches indices and rules for
1870 large collation sequences to optimize multiple passes. This cache
1871 computation may overflow for large collation sequences and may cause a
1872 stack or buffer overflow. This is now fixed to use a slower algorithm
1873 which does not use a cache if there is an integer overflow.
1875 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
1876 rules for large collation sequences to optimize multiple passes and falls
1877 back to alloca if malloc fails, resulting in a possible stack overflow.
1878 The implementation now falls back to an uncached collation sequence lookup
1881 * CVE-2013-4788 The pointer guard used for pointer mangling was not
1882 initialized for static applications resulting in the security feature
1883 being disabled. The pointer guard is now correctly initialized to a
1884 random value for static applications. Existing static applications need
1885 to be recompiled to take advantage of the fix (bug 15754).
1887 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
1888 to the d_name member of struct dirent, or omit the terminating NUL
1889 character. (Bugzilla #14699).
1891 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
1892 aligned_alloc functions could allocate too few bytes or corrupt the
1893 heap when passed very large allocation size values (Bugzilla #15855,
1896 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
1897 for AF_INET6 has been fixed (Bugzilla #16072).
1899 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
1900 pap_CW, quz_PE, the_NP.
1902 * Substantially revised locales: gd_GB, ht_HT
1904 * The LC_ADDRESS field was updated to support country_car for almost all
1907 * ISO 1427 definitions were updated.
1909 * ISO 3166 definitions were updated.
1911 * The localedef utility now supports --big-endian and --little-endian
1912 command-line options to generate locales for a different system from that
1913 for which the C library was built.
1915 * Binary locale files now only depend on the endianness of the system for
1916 which they are generated and not on other properties of that system. As a
1917 consequence, binary files generated with new localedef may be incompatible
1918 with old versions of the GNU C Library, and binary files generated with
1919 old localedef may be incompatible with this version of the GNU C Library,
1920 in the following circumstances:
1922 + Locale files may be incompatible on m68k systems.
1924 + Locale archive files (but not separate files for individual locales) may
1925 be incompatible on systems where plain "char" is signed.
1927 * The configure option --disable-versioning has been removed. Builds with
1928 --disable-versioning had not worked for several years.
1930 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
1931 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
1933 * SystemTap probes for malloc have been introduced.
1935 * SystemTap probes for slow multiple precision fallback paths of
1936 transcendental functions have been introduced.
1938 * Support for powerpc64le has been added.
1940 * The soft-float powerpc port now supports e500 processors.
1942 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
1944 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
1945 set of header declarations that are enabled by default, even when other
1946 feature test macros or compiler options such as -std=c99 would otherwise
1947 disable some of those declarations.
1949 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
1950 conflict with POSIX. The libbsd-compat library (which was a dummy library
1951 that did nothing) has also been removed.
1953 * Preliminary documentation about Multi-Thread, Async-Signal and
1954 Async-Cancel Safety has been added.
1956 * Change of ABI data structures for s390 and s390x:
1957 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
1958 allow for future hardware extensions. All library functions that accept or
1959 return these structures were versioned in order to provide backwards
1960 compatibility with existing code. However, not all cases can be handled
1961 with interface versioning. If an application embeds either structure into
1962 another structure and that structure is passed to another compilation unit
1963 which expects the newer larger-sized object then any access to the new
1964 fields will result in undefined behaviour. Similarly any access to fields
1965 that were moved by the enlarging of the structures will cause undefined
1966 behaviour. To fix the undefined behaviour all objects that are part of the
1967 final in-memory image must agree on the size of structures, and this may
1968 require recompilation.
1972 * The following bugs are resolved with this release:
1974 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
1975 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
1976 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
1977 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
1978 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
1979 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
1980 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
1981 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
1982 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
1983 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
1984 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
1985 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
1986 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
1989 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
1990 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
1991 Distributions can re-enable building and using pt_chown via the new configure
1992 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
1993 considerable security risks and should only be used if the distribution
1994 understands and accepts the risks.
1996 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
1999 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
2000 fixed (Bugzilla #15330).
2002 * Add support for calling C++11 thread_local object destructors on thread
2003 and program exit. This needs compiler support for offloading C++11
2004 destructor calls to glibc.
2006 * Improved worst case performance of libm functions with double inputs and
2009 * Support for priority inherited mutexes in pthread condition variables on
2010 non-x86 architectures.
2012 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
2014 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
2016 * Optimized string functions for ARM. Implemented by Will Newton and
2019 * Optimized libm functions for SPARC. Implemented by David S. Miller.
2021 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
2024 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
2025 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
2027 * Added a benchmark framework to track performance of functions in glibc.
2029 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
2030 It is based on draft TS 18661 and currently enabled as a GNU extension.
2032 * On Linux, the clock function now uses the clock_gettime system call
2033 for improved precision, rather than old times system call.
2035 * Added support for version-3 tz format files. This is needed when using
2036 the tz database release 2013e or later, and affects a few unusual cases --
2037 currently only TZ='America/Godthab' for time stamps after 2037.
2039 * Added new API functions pthread_getattr_default_np and
2040 pthread_setattr_default_np to get and set the default pthread
2041 attributes of a process.
2043 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
2044 This may improve lock scaling of existing programs on TSX capable systems.
2045 When the --enable-lock-elision=yes parameter is specified at configure
2046 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
2049 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
2050 availability). Implemented by Ryan S. Arnold.
2052 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
2056 * The following bugs are resolved with this release:
2058 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
2059 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
2060 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
2061 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
2062 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
2063 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
2064 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
2065 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
2066 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
2067 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
2068 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
2069 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
2070 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
2071 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
2072 14879, 14889, 14893, 14898, 14914.
2074 * Optimization of memcpy for MIPS.
2076 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
2077 EMFILE has been fixed (Bugzilla #14889).
2079 * The add-on ports collection is now distributed in the "ports" subdirectory
2080 of the main GNU C Library distribution, rather than separately.
2082 * Port to ARM AArch64 contributed by Linaro.
2084 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
2085 Optimized versions of memcpy, memset, and memcmp added for System z10 and
2087 Implemented by Andreas Krebbel.
2089 * The new function secure_getenv allows secure access to the environment,
2090 returning NULL if running in a SUID/SGID process. This function replaces
2091 the internal function __secure_getenv.
2093 * SystemTap static probes have been added into the dynamic linker.
2094 Implemented by Gary Benson.
2096 * Optimizations of string functions strstr, strcasestr and memmem.
2097 Implemented by Maxim Kuvyrkov.
2099 * The minimum Linux kernel version that this version of the GNU C Library
2100 can be used with is 2.6.16.
2102 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
2103 powerpc POWER7. Implemented by Will Schmidt.
2105 * New configure option --disable-nscd builds the C library such that it
2106 never attempts to contact the Name Service Caching Daemon (nscd).
2107 New configure option --disable-build-nscd avoids building nscd itself;
2108 this is the default if --disable-nscd is used.
2110 * Improved support for cross-compilation, including cross-testing and
2111 bootstrap builds without a previously built glibc.
2113 * Several testsuite tests are now able to test multiple IFUNC variants of an
2114 interface, rather than just testing the one that would be chooen by
2117 * New configure options --with-bugurl and --with-pkgversion, for
2118 distributors to use to embed their bug-reporting and package version
2119 information in --help and --version output.
2121 * The ttyname and ttyname_r functions on Linux now fall back to searching for
2122 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
2123 allows creation of chroots without the procfs mounted on /proc.
2125 * The `crypt' function now fails if passed salt bytes that violate the
2126 specification for those values. On Linux, the `crypt' function will
2127 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
2128 enabled, and fail on encrypted strings using the MD5 or DES algorithm
2129 when the mode is enabled.
2131 * The `clock_*' suite of functions (declared in <time.h>) is now available
2132 directly in the main C library. Previously it was necessary to link with
2133 -lrt to use these functions. This change has the effect that a
2134 single-threaded program that uses a function such as `clock_gettime' (and
2135 is not linked with -lrt) will no longer implicitly load the pthreads
2136 library at runtime and so will not suffer the overheads associated with
2137 multi-thread support in other code such as the C++ runtime library.
2139 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
2144 * The following bugs are resolved with this release:
2146 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
2147 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
2148 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
2149 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
2150 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
2151 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
2152 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
2153 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
2154 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
2155 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
2156 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
2157 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
2158 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
2159 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
2160 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
2161 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
2162 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
2163 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
2164 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
2165 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
2166 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
2167 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
2170 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
2171 configuring glibc with:
2172 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
2173 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
2174 Implemented by H.J. Lu.
2178 + define static_assert
2180 + do not declare gets
2182 + declare at_quick_exit and quick_exit also for ISO C11
2184 + aligned_alloc. NB: The code is deliberately allows the size parameter
2185 to not be a multiple of the alignment. This is a moronic requirement
2186 in the standard but it is only a requirement on the caller, not the
2189 + timespec_get added
2191 + uchar.h support added
2193 + CMPLX, CMPLXF, CMPLXL added
2195 Implemented by Ulrich Drepper.
2197 * Support for the IA-64 has been moved to ports.
2199 * Remove support for anything but ELF binary format
2201 * Checking versions of poll, ppoll added.
2202 Implemented by Ulrich Drepper.
2204 * More generic and 64-bit performance optimizations to math functions.
2205 Implemented by Ulrich Drepper.
2207 * New configure option --enable-obsolete-rpc makes the deprecated RPC
2208 headers and functions available at compile time as they were before
2209 version 2.14. This option will be removed at some time in the future
2210 after the TI-RPC library becomes fully sufficient for the needs of
2211 existing applications.
2213 * Compatibility code for Linux kernel versions before 2.4 has been removed.
2214 Note that glibc is not expected to work with any Linux kernel version
2217 * New header <sys/auxv.h> and function getauxval allowing easy access to
2218 the AT_* key-value pairs passed from the Linux kernel. The header also
2219 defines the HWCAP_* bits associated with the AT_HWCAP key.
2221 * New locales: mag_IN
2223 * New configure option --enable-systemtap builds SystemTap static probes
2224 into libc for setjmp and longjmp and into libpthread for various operations.
2225 So far the setjmp/longjmp probes and some of the libpthread probes are
2226 provided only for i*86 and x86_64.
2227 Implemented by Roland McGrath and Rayson Ho.
2229 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
2231 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
2234 * More optimized functions for SPARC. Implemented by David S. Miller.
2236 * Improved support for cross-compilation, especially bootstrap builds
2237 without a previously built glibc.
2239 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
2240 Chris Metcalf from Tilera.
2242 * Support for the old ARM ABI has been removed from ports. Only the EABI is
2243 now supported for ARM processors.
2245 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
2246 as the name of the dynamic linker, to distinguish it from the
2247 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
2249 * Support for CRIS has been removed from ports.
2251 * A new class of installed header has been documented for low-level
2252 platform-specific functionality. PowerPC added the first instance with a
2253 function to provide time base register access. Contributed by Tulio
2254 Magno Quites Machado Filho.
2256 * ix86 configurations now install header files that are consistent with
2257 what x86-64 configurations install. These same header files can be used
2258 for -m32, -m64, or -mx32 builds.
2259 Contributed by H.J. Lu.
2261 * Math library bug fixes. A thorough audit of all open math library bugs was
2262 conducted by Joseph Myers. Significant progress was made on many math
2263 library bugs resulting in more accurate exceptions and function results.
2264 Many thanks to all those that contributed including Andreas Jaeger for his
2265 patch review and work on the x87 trigonometric instruction issues.
2267 * Timezone data is no longer installed. Timezone-related binaries and scripts
2268 will continue to be installed. Users should obtain their timezone data from
2269 their distribution provider or from the tzdata package at
2270 <ftp://munnari.oz.au/pub/>.
2274 * The following bugs are resolved with this release:
2276 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
2277 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
2278 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
2279 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
2280 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
2281 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
2282 13484, 13506, 13515, 13523, 13524, 13538, 13540
2284 * New program pldd to list loaded object of a process
2285 Implemented by Ulrich Drepper.
2287 * Add nss_db support back to glibc. No more dependency on Berkeley db
2288 and support for initgroups lookups.
2289 Implemented by Ulrich Drepper.
2291 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
2292 Contributed by HJ Lu.
2294 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
2295 Contributed by HJ Lu.
2297 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
2298 on x86-32 and x86-64.
2299 Contributed by Liubov Dmitrieva.
2301 * Optimized strchr and strrchr for SSE on x86-32.
2302 Contributed by Liubov Dmitrieva.
2304 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
2305 for x86-64 and x86-32.
2306 Contributed by Liubov Dmitrieva.
2308 * New interfaces: scandirat, scandirat64
2309 Implemented by Ulrich Drepper.
2311 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
2312 Implemented by Ulrich Drepper.
2314 * nscd now also caches the netgroup database.
2315 Implemented by Ulrich Drepper.
2317 * Integrate libm with gcc's -ffinite-math-only option.
2318 Implemented by Ulrich Drepper.
2320 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
2321 to math functions. Implemented by Ulrich Drepper.
2323 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
2324 Implemented by Ulrich Drepper.
2326 * New Linux interfaces: process_vm_readv, process_vm_writev
2328 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
2329 Implemented by Ulrich Drepper.
2331 * Optimized nearbyint and strcasecmp for PPC.
2332 Implemented by Adhemerval Zanella.
2334 * New locales: bho_IN, unm_US, es_CU, ta_LK
2338 * The following bugs are resolved with this release:
2340 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
2341 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
2342 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
2343 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
2344 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
2345 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
2346 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
2347 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
2348 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
2349 12795, 12811, 12813, 12814, 12841
2351 * The RPC implementation in libc is obsoleted. Old programs keep working
2352 but new programs cannot be linked with the routines in libc anymore.
2353 Programs in need of RPC functionality must be linked against TI-RPC.
2354 The TI-RPC implementation is IPv6 enabled and there are other benefits.
2356 Visible changes of this change include (obviously) the inability to link
2357 programs using RPC functions without referencing the TI-RPC library and the
2358 removal of the RPC headers from the glibc headers.
2359 Implemented by Ulrich Drepper.
2361 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
2362 syncfs, setns, sendmmsg
2364 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
2365 yue_HK, lij_IT, mhr_RU
2367 * New encodings: CP770, CP771, CP772, CP773, CP774
2369 * New program sotruss to trace calls through PLTs
2370 Implemented by Ulrich Drepper.
2372 * The malloc hook implementation is marked deprecated and will be removed
2373 from the default implementation in the next version. The design never
2374 worked ever since the introduction of threads. Even programs which do
2375 not create threads themselves can use multiple threads created internally.
2379 * The following bugs are resolved with this release:
2381 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
2382 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
2383 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
2384 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
2387 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
2389 * POWER7 optimizations: memset, memcmp, strncmp
2391 * New optimized string functions for x86-64: strnlen (SSE2),
2392 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
2393 Implemented by Ulrich Drepper.
2397 * The following bugs are resolved with this release:
2399 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
2400 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
2401 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
2402 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
2403 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
2404 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
2405 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
2406 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
2408 * New interfaces: pthread_getname_np, pthread_setname_np
2410 * New Linux interface: recvmmsg
2412 * STT_GNU_IFUNC implemented for Sparc by David Miller.
2414 * The dynamic linker now recognizes supported ABI versions from the
2415 EI_ABIVERSION field in the ELF header.
2416 Implemented by Ulrich Drepper.
2418 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
2419 will not be used to fill in password fields in the passwd.byname replies.
2420 Instead it is used to synthesize the shadow.byname table, should it be
2421 missing. This is a useful mode in some installations involving Solaris.
2422 Implemented by Ulrich Drepper.
2424 * New locales: kok_IN, sq_MK, cv_RU
2428 * The following bugs are resolved with this release:
2430 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
2431 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
2432 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
2433 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
2434 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
2435 10789, 10817, 10823, 10840, 10847
2437 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
2439 Implemented by Ulrich Drepper.
2441 * Checking version of longjmp added that fails if an uninitialized stack
2442 frame would be created. Implemented by Ulrich Drepper.
2444 * STT_GNU_IFUNC is now supported in static executables.
2445 Implemented by H.J. Lu.
2447 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
2449 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
2450 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
2451 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
2452 Contributed by H.J. Lu.
2454 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
2455 Implemented by Ulrich Drepper.
2457 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
2459 Contributed by H.J. Lu.
2461 * Support for fma instruction in AVX on x86-64.
2462 Implemented by H.J. Lu and Ulrich Drepper.
2464 * AVX support in x86-64 auditing support in ld.so.
2465 Implemented by H.J. Lu.
2467 * STB_GNU_UNIQUE support added.
2468 Implemented by Ulrich Drepper.
2470 * Implement second fallback mode for optimized DNS lookup for even more
2471 broken environments. If two requests from the same port are not
2472 handled correctly close the socket and open a new one before sending
2473 the second request. The 'single-request-reopen' option in /etc/resolv.conf
2474 can be used to select this mode right away, instead of rediscovering the
2475 necessity is every process again.
2476 Implemented by Ulrich Drepper.
2478 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
2479 Implemented by Adam Tkac.
2481 * Optimized iconv conversions for S390x.
2482 Implemented by Andreas Krebbel.
2484 * Using condvars with PI mutexes is now more efficient due to kernel
2485 support for requeueing to PI futexes. NPTL support added for x86-64.
2486 Implemented by Ulrich Drepper.
2488 * New locales: ps_AF, my_MM
2492 * The following bugs are resolved with this release:
2494 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
2495 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
2496 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
2497 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
2498 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
2500 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
2501 Implemented by Ulrich Drepper.
2503 * New Linux interfaces: accept4, fallocate, fallocate64.
2504 Implemented by Ulrich Drepper.
2506 * Correct declarations of string function when used in C++ code. This
2507 could lead to compile errors for invalid C++ code.
2509 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
2512 * New POSIX 2008 interface: psiginfo
2513 Implemented by Ulrich Drepper.
2515 * New ISO C++1x interfaces: quick_exit, at_quick_exit
2516 Implemented by Ulrich Drepper.
2518 * Support for selecting between multiple function definitions at runtime
2519 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
2521 * The libcrypt library can now use the hash function implementations in
2522 NSS. Implemented by Ulrich Drepper.
2524 * The malloc implementation can be compiled to be less memory efficient
2525 but higher performing in multi-threaded programs.
2526 Implemented by Ulrich Drepper.
2528 * New locales: nan_TW@latin, ks_IN
2530 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
2531 Implemented by Ulrich Drepper.
2533 * Extended printf hook support. It is possible to use user-defined types
2534 and extend existing format specifiers.
2535 Implemented by Ulrich Drepper.
2537 * Handling for group shadow files has been added.
2538 Implemented by Ulrich Drepper.
2540 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
2541 servers (the case, e.g., for some people using the built-in DNS
2542 server in ADSL modems/routers). There is a once-per-process timeout
2543 in case of a broken server. To avoid it, users can run nscd or put
2544 'options single-request' in /etc/resolv.conf.
2545 Implemented by Ulrich Drepper.
2549 * The following bugs are resolved with this release:
2551 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
2552 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
2553 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
2554 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
2555 6968, 6974, 6980, 6995, 7008, 7009, 7029
2557 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
2558 up at the same time. Implemented by Ulrich Drepper.
2560 * TLS descriptors for LD and GD on x86 and x86-64.
2561 Implemented by Alexandre Oliva.
2563 * getaddrinfo now handles DCCP and UDPlite.
2564 Implemented by Ulrich Drepper.
2566 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
2567 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
2568 Implemented by Ulrich Drepper.
2570 * New implementation of memmem, strstr, and strcasestr which is O(n).
2571 Implemented by Eric Blake.
2573 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
2575 * Implement "e" option for popen to open file descriptor with the
2576 close-on-exec flag set. Implemented by Ulrich Drepper.
2578 * Implement "b" mode for fmemopen. In this mode writes writes don't
2579 implicitly add a NUL byte and seeks from the end of the buffer really
2580 use the buffer end, not the string length as the basis.
2581 Implemented by Ulrich Drepper.
2583 * Many functions, exported and internal, now atomically set the close-on-exec
2584 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
2586 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
2588 Implemented by Pravin Satpute.
2590 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
2594 * The following bugs are resolved with this release:
2596 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
2597 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
2598 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
2599 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
2600 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
2601 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
2602 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
2604 * New locales: bo_CN, bo_IN, shs_CA.
2606 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
2608 * Sorting rules for some Indian languages (Devanagari and Gujarati).
2609 Implemented by Pravin Satpute.
2611 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
2613 * nscd caches now all timeouts for DNS entries
2614 Implemented by Ulrich Drepper.
2616 * nscd is more efficient and wakes up less often.
2617 Implemented by Ulrich Drepper.
2619 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
2620 vdprintf, and obstack_vprintf.
2621 Implemented by Jakub Jelinek.
2623 * Faster memset for x86-64.
2624 Implemented by Harsha Jagasia and H.J. Lu.
2626 * Faster memcpy on x86.
2627 Implemented by Ulrich Drepper.
2629 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
2630 Implemented by Ulrich Drepper.
2632 * Faster sqrt and sqrtf implemention for some PPC variants.
2633 Implemented by Steven Munroe.
2637 * The following bugs are resolved with this release:
2639 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
2640 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
2641 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
2642 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
2643 5071, 5103, 5104, 5112, 5113, 5184, 5186
2645 * More checking functions: fread, fread_unlocked, open*, mq_open.
2646 Implemented by Jakub Jelinek and Ulrich Drepper.
2648 * Extend fortification to C++. Implemented by Jakub Jelinek.
2650 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
2651 by not recognizing 'a' as a modifier when those specs are requested.
2652 Implemented by Jakub Jelinek.
2654 * PPC optimizations to math and string functions.
2655 Implemented by Steven Munroe.
2657 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
2658 options to be passed. Implemented by Ulrich Drepper.
2660 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
2662 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
2663 Implemented by Ulrich Drepper.
2665 * Handle private futexes in the NPTL implementation.
2666 Implemented by Jakub Jelinek and Ulrich Drepper.
2668 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
2669 Implemented by Roland McGrath and Ulrich Drepper.
2671 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
2673 * SHA-256 and SHA-512 based password encryption.
2674 Implemented by Ulrich Drepper.
2676 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
2677 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
2680 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
2681 Implemented by Ulrich Drepper.
2685 * The following bugs are resolved with this release:
2687 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
2688 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
2689 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
2690 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
2691 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
2692 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
2693 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
2696 * New Linux interfaces: epoll_pwait, sched_getcpu.
2698 * New generic interfaces: strerror_l.
2700 * nscd can now cache the services database. Implemented by Ulrich Drepper.
2704 * The following bugs are resolved with this release:
2706 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
2707 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
2708 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
2709 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
2710 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
2711 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
2712 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
2713 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
2714 3225, 3251, 3252, 3253, 3273
2716 * For Linux, the sorting of addresses returned by getaddrinfo now also
2717 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
2718 Implemented by Ulrich Drepper.
2720 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
2721 Implemented by Ulrich Drepper.
2723 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
2725 * New iconv module for MIK. Contributed by Alexander Shopov.
2727 * For sites with broken group and/or passwd database, the auto-propagate
2728 option of nscd can prevent creating ID lookup entries from the results
2729 of a name lookup and vice versa. This usually is no problem but some
2730 site might have problems with the default behavior.
2731 Implemented by Ulrich Drepper.
2733 * Iterating over entire database in NIS can be slow. With the
2734 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
2735 to trade time for memory. The entire database will be read at once.
2736 Implemented by Ulrich Drepper.
2738 * The interfaces introduced in RFC 3542 have been implemented by
2741 * Support for the new ELF hash table format was added by Ulrich Drepper.
2743 * Support for priority inheritance mutexes added by Jakub Jelinek and
2746 * Support for priority protected mutexes added by Jakub Jelinek.
2748 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
2749 or_IN, csb_PL, fy_NL, sr_ME.
2753 * More overflow detection functions.
2755 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
2756 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
2758 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
2759 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
2760 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
2761 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
2762 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
2763 by Masahide Washizawa.
2765 * It is now possible to install audit libraries for the dynamic linker using
2766 LD_AUDIT. Implemented by Ulrich Drepper.
2768 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
2769 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
2770 For a libc and libpthread that works well on Linux 2.4 kernels, we
2771 recommend using the stable 2.3 branch.
2773 * The new function open_wmemstream acts like open_memstream,
2774 but uses a wchar_t wide character buffer.
2776 * The new function ppoll is an improved version of poll, similar to pselect.
2778 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
2779 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
2780 renameat, unlinkat, linkat, symlinkat, readlinkat.
2782 * New Linux kernel system calls: unshare,
2783 inotify_init, inotify_add_watch, inotify_rm_watch.
2785 * The euidaccess function is now also known by the alias eaccess,
2786 for compatibility with some other systems.
2788 * Timezone data updated to 2006b version.
2792 * The following bugs are resolved with this release:
2794 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
2795 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
2796 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
2797 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
2798 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
2799 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
2801 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2803 * As of this release, GCC 4 can be used to compile the C Library.
2805 * Timezone data updated to 2005m version.
2809 * The following bugs are resolved with this release:
2811 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
2812 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
2813 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
2814 777, 787, 821, 822, 823, 825
2816 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2820 * Support for RFC 3678. Real implementations exist only for Linux so far.
2821 Implemented by Ulrich Drepper.
2823 * nscd can now cache entries persistently. Expiring entries are reloaded.
2824 For speedups the cache can be shared in memory with client processes.
2825 Implemented by Ulrich Drepper.
2827 * nscd can now perform SELinux checks.
2828 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
2830 * getaddrinfo queries are now cached. Canonical name lookup is performed
2832 Implemented by Ulrich Drepper.
2834 * The nothrow function attribute is used when headers are used by gcc when
2835 compiling C code. This can avoid significant amounts of exception
2838 * The malloc functions perform more error checking and are stricter when
2839 it comes to reacting on errors. The default action is to terminate
2840 the process after showing an error message. Implemented by Ulrich Drepper.
2842 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
2843 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
2845 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
2846 namespaces using the new function dlmopen(). This feature is of course,
2847 like most other dynamic loading functionality, not available in statically
2848 linked applications. Implemented by Ulrich Drepper.
2850 * Low-overhead boundary checking variants of string and some stdio functions
2851 were added. These are to be used in conjunction with a gcc patch by
2852 Jakub Jelinek which adds calls to these functions if possible.
2853 Implemented by Jakub Jelinek and Ulrich Drepper.
2855 * Old code for several operating systems and machine architectures that
2856 have not been in working condition in a long time have been removed from
2857 the main source tree maintained by the GNU C Library's maintainers.
2858 These files are now reside in the separate `ports' source module
2859 that is usable as an add-on when building the library.
2863 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
2864 interrogate the dynamic linker, compatible with the Solaris interface.
2866 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
2867 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
2869 * getifaddrs now uses the netlink interface on Linux to get its information.
2870 Implemented by Thorsten Kukuk.
2872 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
2873 Implemented by Ulrich Drepper.
2875 * support for non-executable stacks on x86 has been added. Changes mostly
2878 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
2881 * getaddrinfo now performs destination address selection according to
2886 * Thread-safe interfaces for many functions that access locale data
2887 were added in version 2.3, but these features were omitted from NEWS.
2888 Many functions have variants with an `_l' suffix that take a `locale_t'
2889 object as a parameter rather than consulting the current locale.
2890 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
2891 create and maintain `locale_t' objects. Additionally, the new function
2892 `uselocale' sets "the current locale" (as used by functions not so
2893 parameterized) set for an individual thread. These features were added
2894 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
2896 * The functions getresuid, getresgid, setresuid, and setresgid, which
2897 have long been available on Linux, are now declared in <unistd.h>
2898 and are now also available on the Hurd.
2900 * ELF thread-local storage support (TLS) now works on x86-64.
2902 * The new dynamic string token $LIB is expanded in shared library names.
2903 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
2905 * Aldy Hernandez contributed complete software floating point support for
2906 PowerPC machines with no FPU.
2908 * fexecve is implemented on Linux.
2910 * The `btowc' function should work at least twice as fast due to
2911 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
2913 * With approriate thread add-ons cancelable functions are now implemented
2914 in libc.so as well. No need to call the function in libpthread. This
2915 change allowed to finally disable the incorrect and expensive handling
2916 of weak definition in ld.so.
2918 * Yet more PLT entries in libc.so have been removed. We finally arrived
2919 at the bare minimum. Startup times improved appropriately.
2921 * Support for the new Linux/x86 system call interface was added. The
2922 AT_SYSINFO auxiliary vector entry is recognized and handled.
2926 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
2929 * iconv (the program and the interface) now accepts empty names (excluding
2930 options like //TRANSLIT) to mean "use charset of current locale".
2932 * localedef can now transliterate characters in strings which are not in
2933 the provided charmap. The information from the input locale is used.
2935 * Prelinking support was added for ELF targets. This requires additional
2936 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
2938 * Read-only stdio streams now use mmap to speed up operation by eliminating
2939 copying and buffer underflows. To use add 'm' to the mode string of
2940 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
2942 * The malloc functions were completely rewritten by Wolfram Gloger based
2943 on Doug Lea's malloc-2.7.0.c.
2945 * Isamu Hasegawa contributed a completely new and POSIX-conformant
2946 implementation of regex.
2948 * Bruno Haible upgraded the iconv and locale implementation to support
2951 * Contents of the LC_* and LANG environment variables in the CEN style are
2952 not recognized anymore. It never was used. Change by Ulrich Drepper.
2954 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
2955 thread-local storage (TLS) ABI on some platforms.
2956 Changes by Ulrich Drepper. SH support by Kaz Kojima.
2958 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
2959 EUC-JISX0213, and TSCII.
2961 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
2962 BSD-compatible interface for getting all network interface addresses.
2963 Implementation for IPv4 by Roland McGrath.
2965 * Loading of locale data is faster due to the introduction of a locale
2966 archive. Implemented by Roland McGrath and Ulrich Drepper.
2968 * Startup times are significantly reduced by not using exported functions
2969 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
2972 * Steven Munroe contributed a port to PowerPC64/Linux.
2976 * The Hurd now uses the GNU libio implementation of stdio rather than the
2977 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
2979 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
2980 with the same behavior as the Linux system call of the same name.
2984 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
2985 128-bit long double format.
2987 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
2988 IBM1161, and IBM1162 charsets.
2990 * Andreas Jaeger contributed a port to x86-64/Linux.
2992 * Peter Bruin contributed a port to PowerPC/Hurd.
2994 * libc functions using I/O streams now can handle wide-oriented streams
2997 * optimizations in the dynamic linker. Binaries created by recent binutils
2998 versions start up quicker due to reduced time spent on relocations.
3000 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
3004 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
3005 asinh, atanh, j0 for the 128-bit long double format.
3007 * Bruno Haible updated all the code handling Unicode in some form to
3008 support Unicode 3.1.
3010 * Speed of regex for single-byte locales is back to previous levels.
3011 Patch by Isamu Hasegawa.
3013 * Alpha, SPARC, and IA-64 now also using floating stacks.
3015 * Startup time of internationalized applications greatly improved through
3016 iconv cache. Use iconvconfig to generate the cache file.
3017 Contributed by Ulrich Drepper.
3019 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
3020 severe performance problems. Patch by David Mosberger.
3022 * The Hurd port got a lot more functionality like AIO, various stdio
3023 extensions, etc. Mainly done by Roland McGrath.
3025 * mtrace can now lookup symbols in shared libraries.
3029 * Intel's IA-64 math library is largely integrated. It provides fast and
3030 accurate implementatations for most basic and standard math functions
3031 in float, double, and long double format.
3033 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
3034 and asin for the 96-bit long double format and asin, log, tan for the
3035 128-bit long double format.
3037 * The beginning of a last-bit accurate math library by IBM Haifa were added.
3038 The basic double functions exist today. Contributed by Abraham Ziv
3039 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
3040 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
3042 * An asynchronous name lookup library was added. The interface is designed
3043 after POSIX AIO. The proposal was circulated beforehand to get comments.
3044 No negative ones came in. Implemented by Ulrich Drepper.
3046 * Port to S390/64bit contributed by Martin Schwidefsky
3047 <schwidefsky@de.ibm.com>.
3049 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
3050 of functions for Linux/IA-64.
3052 * The RPC code is now thread safe. Threads can now use the same service
3053 of different services at the same time. Patch by Eric Norum
3054 <eric.norum@usask.ca> with some help by Ulrich Drepper.
3056 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
3057 family of functions for Linux/S390.
3059 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
3060 of functions for Linux/x86.
3062 * Port to Linux/CRIS contributed by Axis Communications.
3066 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
3067 we can now check for namespace violations and missing declarations. The
3068 result is that almost all headers are now Unix-compliant (as defined in
3069 the upcoming XPG6). The negative side is that some programs might need
3070 corrections, too, if they depend on the incorrect form of the headers in
3071 previous versions which defined too many symbols and included too many
3074 * regex now handles multibyte character sets correctly.
3075 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
3077 * iconv (the program) does now conform to the upcoming XPG6 and handles
3078 charmaps. Instead of the charset names the path of charmaps can be
3079 provided and the conversion happens based on this data.
3080 Contributed by Ulrich Drepper.
3082 * The locale program now provides detailed information about the installed
3087 only lists the names of the supported locales
3091 provides details such as country, language, and codeset name.
3092 Contributed by Ulrich Drepper.
3096 * The gencat program now parses the input file according to the charset
3097 selected by the LC_CTYPE category. This is important for stateful
3098 character sets. To make generating catalogs easier there is a way
3099 to overwrite the charset selected by the locale: before the first
3100 message or $ quote line the catalog can contain a line like
3102 $ codeset=ISO-8859-2
3104 to select the charset (ISO-8859-2 in this case).
3106 Implemented by Shinya Hanataka and Ulrich Drepper.
3108 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
3109 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
3110 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
3112 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
3113 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
3115 * The LANGUAGE environment variable is now ignored unless the locale is
3116 changed from the default "C" locale.
3118 * The usual bug fixes.
3122 * Greg McGary added runtime support for bounds checking using gcc's
3123 new -fbounded-pointers option. ix86 target is complete. PowerPC
3126 * Thorsten Kukuk added secure mode support to nscd.
3128 * The Berkeley db libraries have been removed.
3130 Related, the nss_db module is now in a separate package since it
3131 obviously requires a database library being available.
3133 * Wide character I/O streams implemented by Ulrich Drepper.
3135 * Functions from the extended socket API added by Ulrich Drepper.
3137 * Functions feenableexcept and fedisableexcept to control the
3138 behaviour of individual exceptions have been added by Andreas Jaeger.
3140 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
3142 * The resolver code has been updated from bind 8.2.3-T5B which supports
3143 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
3146 This change could in some situations effect backward compatibility. Since
3147 now `_res' is a thread-local instead of a global variable, modifying it
3148 in one thread does not have any effect in other threads.
3150 The resolver library was also extended to allow IPv6 as the transport
3151 protocol for the requests. This work was done by Stig Venaas.
3153 * Compatibility code for K&R C compilers has been removed from the
3154 header files. A ISO C compiler is needed to use the library
3155 (conforming to either C89 or C99 standard).
3157 * Complete rewrite of the localedef program to support multibyte character
3158 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
3159 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
3160 Implemented by Ulrich Drepper.
3162 Bruno Haible significantly improved the generation and use of the data
3163 structures for the wide character tables.
3165 * Plural handling in gettext implemented by Ulrich Drepper.
3167 * The utmp daemon has been removed.
3169 * The port to MIPS-Linux has been finished by Andreas Jaeger.
3171 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
3174 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
3176 * POSIX barriers implemented by Kaz Kylheku.
3178 * POSIX spawn function family implemented by Ulrich Drepper.
3180 * POSIX spinlocks are now available.
3182 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
3184 * the configure option --enable-kernel=X.Y.Z allows to strip out
3185 compatibility for kernel versions before X.Y.Z. This is currently only
3186 implemented for Linux.
3188 * the sockaddr_in6 structure changed. The IPv6 working group added a new
3189 field sin6_scope_id. This means that all programs using IPv6 should be
3190 recompiled. Don't expect binary compatibility with previous glibc
3193 * various conversion modules for IBM character sets contributed by
3196 * IA-64 port by Jes Sorensen and HJ Lu.
3210 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
3212 * New xdr functions are added; some rpc functions are now 64bit clean.
3214 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
3216 * Fixed known incompatibilities with glibc 2.0.
3218 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
3220 * Optimized a number of functions (especially the ELF dynamic loader).
3222 * Update timezone data files.
3224 * lots of charmaps corrections
3226 * some new locale definitions and charmaps
3231 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
3232 conform to POSIX member type requirements. Symbol versions have been
3233 adjusted as needed within the library, and for direct use by applications,
3234 but there is potential for problems if third-party libraries use
3235 struct timeval as part of their interface. This does not present
3236 a problem for X and other "essential" system libraries.
3238 * An additional locale model to support C++ Standard Library locale
3239 model and probably more was implemented by Ulrich Drepper.
3241 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
3244 * Miles Bader provided the `argp' function family to support hierachical
3245 command line argument parsing, layered on top of getopt.
3247 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
3249 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
3252 * scanf recognizes the %a and %A format for scanning floating point numbers.
3254 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
3255 information and interfaces for the available integer types.
3257 * about 130 new math functions were added to implement the ISO C9x math
3260 * the new header <complex.h> contains definitions of the complex math
3261 functions from ISO C 9X.
3263 * the new header <tgmath.h> defines generic macros to use complex or
3264 real valued functions.
3266 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
3268 * Andreas Jaeger provided a test suite for the math library.
3270 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
3272 * Ulrich Drepper added character set conversion functions (iconv).
3274 * Optimized string functions have been added.
3276 * The localedata addon is now part of glibc.
3278 * An implementation of profiling shared libraries was added by Ulrich Drepper.
3280 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
3281 daemon for NSS (nscd).
3283 Missing a better place here are some numbers on improvements. Under
3284 Linux 2.1.125 un-tar-ing the kernel sources takes
3288 using local files 12.19s 6.88s 22.91s
3290 using NIS 13.92s 8.91s 26.34s
3292 using NIS & nscd 10.37s 7.34s 25.30s
3294 using NIS+ 27.57s 30.37s 640.46s
3296 using NIS+ & nscd 10.25s 7.83s 26.51s
3298 using NIS & old nscd [1] 13.83s 8.32s 29.60s
3300 Keep in mind that non-namelookup related operations dominate above times.
3301 It was just a common complain that using NIS+ unpacking the kernel is
3304 [1] The old nscd implementation is not available anymore since it was
3305 distributed with glibc up to version 2.0.98 and thus is now replaced.
3307 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
3309 * Mark Kettenis provided a Hesiod NSS module.
3311 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
3312 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
3314 * rcmd can now handle netgroups (Dick Streefland).
3316 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
3319 * Support for the IPv6 protocol has been added to the socket API, as per the
3320 latest draft standards.
3322 * Support for Linux 2.2 has been added.
3324 * Interface changes relative to the latest 2.0.x release:
3325 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3326 addseverity NEW: Unix98
3327 alphasort64 NEW: LFS
3328 argp_err_exit_status NEW: argp, GNU ext
3329 argp_error NEW: argp, GNU ext
3330 argp_failure NEW: argp, GNU ext
3331 argp_help NEW: argp, GNU ext
3332 argp_parse NEW: argp, GNU ext
3333 argp_program_bug_address NEW: argp, GNU ext
3334 argp_program_version NEW: argp, GNU ext
3335 argp_program_version_hook NEW: argp, GNU ext
3336 argp_state_help NEW: argp, GNU ext
3337 argp_usage NEW: argp, GNU ext
3338 authdes_create NEW: Secure RPC
3339 authdes_getucred NEW: Secure RPC
3340 authdes_pk_create NEW: Secure RPC
3341 backtrace NEW: GNU ext.
3342 backtrace_symbols NEW: GNU ext.
3343 backtrace_symbols_fd NEW: GNU ext.
3345 cacosf NEW: ISO C 9x
3346 cacosh NEW: ISO C 9x
3347 cacoshf NEW: ISO C 9x
3348 cacoshl NEW: ISO C 9x
3349 cacosl NEW: ISO C 9x
3356 casinf NEW: ISO C 9x
3357 casinh NEW: ISO C 9x
3358 casinhf NEW: ISO C 9x
3359 casinhl NEW: ISO C 9x
3360 casinl NEW: ISO C 9x
3362 catanf NEW: ISO C 9x
3363 catanh NEW: ISO C 9x
3364 catanhf NEW: ISO C 9x
3365 catanhl NEW: ISO C 9x
3366 catanl NEW: ISO C 9x
3367 cbc_crypt NEW: Secure RPC
3371 ccoshf NEW: ISO C 9x
3372 ccoshl NEW: ISO C 9x
3378 cimagf NEW: ISO C 9x
3379 cimagl NEW: ISO C 9x
3380 clearerr_locked REMOVED
3381 clntunix_create NEW: sunrpc ext
3383 clog10 NEW: ISO C 9x
3384 clog10f NEW: ISO C 9x
3385 clog10l NEW: ISO C 9x
3395 cprojf NEW: ISO C 9x
3396 cprojl NEW: ISO C 9x
3398 crealf NEW: ISO C 9x
3399 creall NEW: ISO C 9x
3404 csinhf NEW: ISO C 9x
3405 csinhl NEW: ISO C 9x
3408 csqrtf NEW: ISO C 9x
3409 csqrtl NEW: ISO C 9x
3413 ctanhf NEW: ISO C 9x
3414 ctanhl NEW: ISO C 9x
3416 des_setparity NEW: Secure RPC
3417 ecb_crypt NEW: Secure RPC
3418 endutxent NEW: Unix98
3420 exp10f NEW: ISO C 9x
3421 exp10l NEW: ISO C 9x
3425 fattach NEW: STREAMS
3426 fdetach NEW: STREAMS
3430 feclearexcept NEW: ISO C 9x
3431 fegetenv NEW: ISO C 9x
3432 fegetexceptflag NEW: ISO C 9x
3433 fegetround NEW: ISO C 9x
3434 feholdexcept NEW: ISO C 9x
3436 feraiseexcept NEW: ISO C 9x
3437 ferror_locked REMOVED
3438 fesetenv NEW: ISO C 9x
3439 fesetexceptflag NEW: ISO C 9x
3440 fesetround NEW: ISO C 9x
3441 fetestexcept NEW: ISO C 9x
3442 feupdateenv NEW: ISO C 9x
3443 fflush_locked REMOVED
3447 fgets_unlocked NEW: GNU ext.
3448 fileno_locked REMOVED
3460 fputc_locked REMOVED
3461 fputs_unlocked NEW: GNU ext.
3462 fread_unlocked NEW: GNU ext.
3467 fstatvfs NEW: Unix98
3471 ftruncate64 NEW: LFS
3473 fwrite_unlocked NEW: GNU ext.
3474 gai_strerror NEW: IPv6
3478 getchar_locked REMOVED
3480 getdate_err NEW: Unix98
3481 getdate_r NEW: GNU ext.
3483 getnameinfo NEW: IPv6
3484 getnetname NEW: Secure RPC
3485 getpmsg NEW: STREAMS
3486 getpt NEW: Unix98 PTY
3487 getrlimit64 NEW: LFS
3488 getutxent NEW: Unix98
3489 getutxid NEW: Unix98
3490 getutxline NEW: Unix98
3491 glob64 NEW: GNU ext.
3492 globfree64 NEW: GNU ext.
3493 gnu_get_libc_release NEW: GNU ext.
3494 gnu_get_libc_version NEW: GNU ext.
3495 grantpt NEW: Unix98 PTY
3496 host2netname NEW: Secure RPC
3498 iconv_close NEW: iconv
3499 iconv_open NEW: iconv
3500 if_freenameindex NEW: IPv6
3501 if_indextoname NEW: IPv6
3502 if_nameindex NEW: IPv6
3503 if_nametoindex NEW: IPv6
3504 in6addr_any NEW: IPv6
3505 in6addr_loopback NEW: IPv6
3506 inet6_isipv4mapped NEW: IPv6
3507 isastream NEW: STREAMS
3508 iswblank NEW: GNU ext.
3509 key_decryptsession NEW: Secure RPC
3510 key_decryptsession_pk NEW: Secure RPC
3511 key_encryptsession NEW: Secure RPC
3512 key_encryptsession_pk NEW: Secure RPC
3513 key_gendes NEW: Secure RPC
3514 key_get_conv NEW: Secure RPC
3515 key_secretkey_is_set NEW: Secure RPC
3516 key_setnet NEW: Secure RPC
3517 key_setsecret NEW: Secure RPC
3518 llrint NEW: ISO C 9x
3519 llrintf NEW: ISO C 9x
3520 llrintl NEW: ISO C 9x
3521 llround NEW: ISO C 9x
3522 llroundf NEW: ISO C 9x
3523 llroundl NEW: ISO C 9x
3528 lrintf NEW: ISO C 9x
3529 lrintl NEW: ISO C 9x
3530 lround NEW: ISO C 9x
3531 lroundf NEW: ISO C 9x
3532 lroundl NEW: ISO C 9x
3534 makecontext NEW: Unix98
3535 mempcpy NEW: GNU ext.
3538 modify_ldt NEW: kernel
3542 nearbyint NEW: ISO C 9x
3543 nearbyintf NEW: ISO C 9x
3544 nearbyintl NEW: ISO C 9x
3545 netname2host NEW: Secure RPC
3546 netname2user NEW: Secure RPC
3547 nexttoward NEW: ISO C 9x
3548 nexttowardf NEW: ISO C 9x
3549 nexttowardl NEW: ISO C 9x
3553 passwd2des NEW: Secure RPC
3555 pow10f NEW: GNU ext.
3556 pow10l NEW: GNU ext.
3559 printf_size NEW: GNU ext.
3560 printf_size_info NEW: GNU ext.
3561 profil_counter REMOVED
3562 pthread_mutexattr_getkind_np REPLACED
3563 pthread_mutexattr_setkind_np REPLACED
3564 ptsname NEW: Unix98 PTY
3565 ptsname_r NEW: Unix98 PTY
3567 putchar_locked REMOVED
3568 putgrent NEW: GNU ext.
3570 putpmsg NEW: STREAMS
3571 pututxline NEW: Unix98
3575 readdir64_r NEW: LFS
3576 remquo NEW: ISO C 9x
3577 remquof NEW: ISO C 9x
3578 remquol NEW: ISO C 9x
3580 roundf NEW: ISO C 9x
3581 roundl NEW: ISO C 9x
3583 scalbln NEW: ISO C 9x
3584 scalblnf NEW: ISO C 9x
3585 scalblnl NEW: ISO C 9x
3587 sendfile NEW: kernel
3588 setcontext NEW: Unix98
3589 setrlimit64 NEW: LFS
3590 setutxent NEW: Unix98
3592 sigignore NEW: Unix98
3593 sigqueue NEW: POSIX.1b
3594 sigrelse NEW: Unix98
3595 sigset NEW: POSIX.1b
3596 sigtimedwait NEW: POSIX.1b
3597 sigwaitinfo NEW: POSIX.1b
3598 sincos NEW: GNU ext.
3599 sincosf NEW: GNU ext.
3600 sincosl NEW: GNU ext.
3604 strcasestr NEW: GNU ext.
3605 strtoimax NEW: ISO C 9x
3606 strtoumax NEW: ISO C 9x
3607 strverscmp NEW: GNU ext.
3608 svcauthdes_stats NEW: Secure RPC
3609 svcunix_create NEW: sunrpc etx
3610 svcunixfd_create NEW: sunrpc ext
3611 swapcontext NEW: Unix98
3612 tcgetsid NEW: Unix98 PTY
3613 tdestroy NEW: GNU ext.
3614 tgamma NEW: ISO C 9x
3615 tgammaf NEW: ISO C 9x
3616 tgammal NEW: ISO C 9x
3620 truncf NEW: ISO C 9x
3621 truncl NEW: ISO C 9x
3623 unlockpt NEW: Unix98 PTY
3624 updwtmpx NEW: Unix98
3625 user2netname NEW: Secure RPC
3626 utmpxname NEW: Unix98
3627 versionsort NEW: GNU ext.
3628 versionsort64 NEW: GNU ext.
3630 wcscasecmp NEW: GNU ext.
3631 wcsncasecmp NEW: GNU ext.
3632 wcsnlen NEW: GNU ext.
3633 wcstoimax NEW: ISO C 9x
3634 wcstoll NEW: ISO C 9x
3635 wcstoull NEW: ISO C 9x
3636 wcstoumax NEW: ISO C 9x
3638 wordexp NEW: POSIX.2
3639 wordfree NEW: POSIX.2
3640 write_profiling REMOVED
3641 xdecrypt NEW: Secure RPC
3642 xdr_authdes_cred NEW: Secure RPC
3643 xdr_authdes_verf NEW: Secure RPC
3644 xdr_cryptkeyarg NEW: Secure RPC
3645 xdr_cryptkeyarg2 NEW: Secure RPC
3646 xdr_cryptkeyres NEW: Secure RPC
3647 xdr_getcredres NEW: Secure RPC
3648 xdr_key_netstarg NEW: Secure RPC
3649 xdr_key_netstres NEW: Secure RPC
3650 xdr_keybuf NEW: Secure RPC
3651 xdr_keystatus NEW: Secure RPC
3652 xdr_netnamestr NEW: Secure RPC
3653 xdr_sizeof NEW: Secure RPC
3654 xdr_unixcred NEW: sunrpc ext
3655 xencrypt NEW: Secure RPC
3656 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3667 * inet_ntoa is thread-safe
3669 * updwtmp is moved from libutil to libc
3671 * rewrite of cbrt function
3673 * update of timezone data
3687 * add atoll function
3689 * fix complex problems in Berkeley DB code
3691 * fix math functions
3695 * fixed lots of header problems (especially Linux/GNU specific)
3697 * dynamic loader preserves all registers
3699 * Roland McGrath provided support for handling of auxiliary objects in
3700 the ELF dynamic loader.
3702 * support for parallel builds is improved
3706 * GNU extensions are no longer declared by default. To enable them you
3707 must define the macro `_GNU_SOURCE' in your program or compile with
3710 * The library has changed from using GNU ld symbol aliases to using weak
3711 symbols where available. The ELF object file format supports weak
3712 symbols; GNU ld also supports weak symbols in the a.out format. (There
3713 is also now support for other GNU ld extensions in ELF. Use the
3714 `--with-elf' option to configure to indicate you have ELF, and
3715 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
3716 of many files which contained only symbol aliases, reducing the size of
3717 the source and the compiled library; many other files were renamed to
3718 less cryptic names previously occupied by the symbol alias files.
3719 There is a new header file <elf.h> for programs which operate on
3720 files in the ELF format.
3722 * Converted to Autoconf version 2, so `configure' has more options.
3723 Run `configure --help' to see the details.
3725 * The library can now be configured to build profiling, highly-optimized
3726 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
3727 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
3728 `configure' enable building these extra libraries. The shared library is
3729 built by default when using both ELF and GNU ld. When shared libraries
3730 are enabled, the new library `-ldl' is available for arbitrary run-time
3731 loading of shared objects; its interface is defined in <dlfcn.h>. The
3732 new header file <link.h> gives access to the internals of the run-time
3733 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
3734 application of same name on other systems and it provides information
3735 about dynamically linked binaries.
3737 * The C library now provides the run-time support code for profiling
3738 executables compiled with `-pg'. Programs can control the profiling code
3739 through the interface in <sys/gmon.h>. The `gmon.out' files written by
3740 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
3741 the support for this file format was contributed by David Mosberger-Tang.
3743 * The math code has been replaced with a math library based on fdlibm from
3744 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
3745 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
3746 functions. The math functions now reside in a separate library, so
3747 programs using them will need to use `-lm' their linking commands.
3749 * John C. Bowman contributed optimized ix87 assembler inline functions.
3751 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
3752 mechanism similar to that found in Solaris 2. This is now used for the
3753 group, passwd, hosts, networks, services, protocols, rpc, ethers,
3754 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
3755 file controls what services are used for each individual database. This
3756 works by loading shared libraries with names specified in `nsswitch.conf',
3757 so service modules can be changed or added at any time without even
3758 relinking any program. Currently there are the file, db, and NIS based
3759 NSS services available.
3761 * The new functions `strtoq' and `strtouq' parse integer values from
3762 strings, like `strtol' and `strtoul', but they return `long long int' and
3763 `unsigned long long int' values, respectively (64-bit quantities).
3765 * The new functions `strtof' and `strtold' parse floating-point values from
3766 strings, like `strtod', but they return `float' and `long double' values,
3767 respectively (on some machines `double' and `long double' are the same).
3769 * Ulrich Drepper has contributed new implementations of the floating-point
3770 printing and reading code used in the `printf' family of functions and
3771 `strtod', `strtof', and `strtold'. These new functions are perfectly
3772 accurate, and much faster than the old ones.
3774 * The implementation of the POSIX locale model was completely rewritten by
3775 Ulrich Drepper. This includes the new programs `localedef' and `locale'
3776 to compile the POSIX locale definition.
3778 * The former dummy implementations of the strcoll and strxfrm function are
3779 now replaced by fully functional code contributed by Ulrich Drepper. The
3780 collation information comes from the POSIX locale definitions.
3782 * The new header <langinfo.h> defines an interface for accessing
3783 various locale-dependent data (using the locale chosen with `setlocale').
3785 * Ulrich Drepper has contributed a new suite of functions for operation on
3786 wide-character and multibyte-character strings, in <wchar.h>;
3787 and classification and case conversion of wide characters, in <wctype.h>.
3788 These new functions are conforming to the ISO C, Amendement 1 specification.
3790 * There is now a second implementation of the standard I/O library available.
3791 It comes from GNU libg++ as was written by Per Bothner, heavily modified
3792 by Hongjiu Lu and made thread safe by Ulrich Drepper.
3794 * You can now use positional parameter specifications in format strings
3795 for the `printf' and `scanf' families of functions. For example,
3796 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
3797 ``Number 6, Mr Jones''. This is mainly useful when providing different
3798 format strings for different languages, whose grammars may dictate
3799 different orderings of the values being printed. To support this
3800 feature, the interface for `register_printf_handler' has changed; see
3801 the header file <printf.h> for details.
3803 * The `printf' and `scanf' families of functions now understand a new
3804 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
3805 to group numbers as indicated by the locale; for `scanf' and friends, this
3806 says to accept as valid only a number with all the proper grouping
3807 separators in the right places. In the default "C" locale, numbers are
3808 not grouped; but locales for specific countries will define the usual
3809 conventions (i.e. separate thousands with `,' in the US locale).
3811 * The pgrp functions have been regularized, slightly incompatibly but much
3812 less confusingly. The core functions are now `getpgid' and `setpgid',
3813 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
3814 argument) and BSD `setpgrp' (identical to `setpgid') functions are
3815 provided for compatibility. There is no longer an incompatible `getpgrp'
3816 with an argument declared under _BSD_SOURCE; no BSD code uses it.
3818 * The new header file <fts.h> and suite of functions simplify programs that
3819 operate on directory trees. This code comes from 4.4 BSD.
3821 * The resolver code has been updated from the BIND 4.9.5-P1 release.
3822 Parts of the code were heavily modified by Ulrich Drepper to fit in the
3823 NSS scheme used in glibc.
3825 * There is a new malloc debugging hook `__memalign_hook'.
3827 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
3828 `unsigned int' in <sys/types.h>. These are for compatibility only and
3829 their use is discouraged.
3831 * The `-lmcheck' library to enable standard malloc debugging hooks is now
3832 done differently, so that it works even without GNU ld.
3834 * New function `euidaccess' checks allowed access to a file like `access',
3835 but using the effective IDs instead of the real IDs.
3837 * The time zone data files have been updated for the latest and greatest
3838 local time conventions of the countries of the world.
3840 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
3843 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
3844 for formatting floating-point numbers. They are provided only for
3845 compatibility; new programs should use `sprintf' instead. There are
3846 also equivalent function for the `long double' floating-point type and
3847 all functions also exist in a reentrant form.
3849 * The new auxiliary library `-lutil' from 4.4 BSD contains various
3850 functions for maintaining the login-record files (primarily of use to
3851 system programs such as `login'), and convenient functions for
3852 allocating and initializing a pseudo-terminal (pty) device.
3854 * Ulrich Drepper has contributed new support for System V style
3855 shared memory and IPC on systems that support it.
3857 * Ulrich Drepper has contributed several miscellaneous new functions found
3858 in System V: The `hsearch' family of functions provide an effective
3859 implementation of hash tables; `a64l' and `l64a' provide a very simple
3860 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
3863 * Ulrich Drepper has contributed new reentrant counterparts for the
3864 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
3866 * Ulrich Drepper has contributed new, highly-optimized versions of several
3867 string functions for the i486/Pentium family of processors.
3869 * Ulrich Drepper has updated the Linux-specific code, based largely
3870 on work done in Hongjiu Lu's version of GNU libc for Linux.
3871 The GNU library now supports Linux versions 2.0.10 and later,
3872 using the ELF object file format (i[3456]86-*-linux).
3874 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
3876 * David Mosberger-Tang and Richard Henderson have ported the C library
3877 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
3878 dynamic linking support for ELF/Alpha.
3880 * Richard Henderson contributed several Alpha optimized assembler function
3881 for arithmetic and string handling.
3883 * Ulrich Drepper has contributed a new set of message catalog functions to
3884 support multiple languages using the <libintl.h> interface, for use with
3885 his new package GNU gettext. Translation volunteers have contributed
3886 catalogs of the library's messages in Spanish, German, and Korean.
3888 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
3889 program and the `catgets' function for reading the catalog files it
3890 creates. (The <libintl.h> interface is preferred; we include the
3891 <nl_types.h> interface using `catgets' only for source compatibility with
3892 programs already written to use it.)
3894 * New header file <values.h> gives SVID-compatible names for <limits.h>
3897 * Various new macros, declarations, and small header files for compatibility
3900 * New function `group_member' is a convenient way to check if a process has
3901 a given effective group ID.
3903 * When using GCC 2.7 and later, the socket functions are now declared in a
3904 special way so that passing an argument of type `struct sockaddr_in *',
3905 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
3906 `struct sockaddr *' type, does not generate a type-clash warning.
3908 * New function `error' declared in header file <error.h> is a convenient
3909 function for printing error messages and optionally exiting; this is the
3910 canonical function used in GNU programs. The new functions `err', `warn',
3911 and friends in header file <err.h> are the canonical 4.4 BSD interface for
3912 doing the same thing.
3914 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
3915 POSIX.2 `glob' function to do ~ and {...} expansion.
3917 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
3918 `clearenv' which is used in POSIX.9 is also available.
3920 * New function `getsid' returns session ID number on systems that support it.
3922 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
3923 files <db.h> and <mpool.h> provide a rich set of functions for several
3924 types of simple databases stored in memory and in files, and <ndbm.h> is
3925 an old `ndbm'-compatible interface using the `db' functions. Link with
3926 `-ldb' to get these functions.
3928 * New macro `strdupa' copies a string like `strdup', but uses local stack
3929 space from `alloca' instead of dynamic heap space from `malloc'.
3931 * New function `strnlen' is like `strlen' but searches only a given maximum
3932 number of characters for the null terminator. `stpncpy', `strndup' and
3933 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
3936 * New function `statfs' in header <sys/statfs.h>.
3938 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
3939 provide convenient functions for operating on blocks of null-terminated
3942 * A new suite of functions in <utmp.h> handle all the details of reading
3943 and writing the utmp file.
3945 * An implementation of the NIS/YP(tm) based NSS service was contributed by
3948 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
3949 completely POSIX compliant and also implemented the extended functionality
3950 to handle alternate digit representation and alternate era date formats.
3952 * Ulrich Drepper provided an implementation of the `strptime' function
3953 defined in XPG4.2 which transforms a string into a `struct tm' value.
3955 * Paul Eggert provided the tzselect shell script as part of the timezone
3956 code. The shell script makes it easy to select the correct timezone
3959 * The implementation of the malloc family of functions is completely replaced
3960 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
3961 The implementation uses the mmap function (if available) and it is
3962 optimized for the use in multi threaded programs.
3964 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
3965 functions. This new functionality is usable by specifying a special
3966 salt string and it is compatible with implementation on *BSD systems.
3968 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
3969 `getsubopt' to handle second level command line options, `bsd_signal'
3970 to access BSD style `signal' functionality, the obsolete `regexp' style
3973 * the `lchown' function is available on system which support this
3976 * The implementation of the shadow password handling function was contributed
3979 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
3981 * POSIX.1g support was added. The <sys/select.h> header is available,
3982 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
3983 implementation of `getaddrinfo'.
3987 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
3989 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
3990 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
3992 * The new function `daemon' from 4.4 BSD is useful for server programs that
3993 want to put themselves in the background.
3995 * Joel Sherrill has contributed support for several standalone boards that
3996 run without an operating system.
3998 * `printf', `scanf' and friends now accept a `q' type modifier for long
3999 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
4001 * All of the code taken from BSD (notably most of the math and networking
4002 routines) has been updated from the BSD 4.4-Lite release.
4004 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
4006 * The new functions `getdomainname' and `setdomainname' fetch or change the
4007 YP/NIS domain name. These are system calls which exist on systems which
4010 * The time zone data files have been updated for the latest international
4013 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
4014 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
4018 * The C library now includes support for Sun RPC, from Sun's free
4019 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
4020 are included. (There is still no support for YP.)
4022 * Tom Quinn has contributed a port of the C library to SGI machines running
4023 Irix 4 (mips-sgi-irix4).
4025 * The new `lockf' function is a simplified interface to the locking
4026 facilities of `fcntl', included for compatibility.
4028 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
4030 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
4032 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
4035 * The error message printed by `assert' for a failed assertion now includes
4036 the name of the program (if using GNU ld) and the name of the calling
4037 function (with versions of GCC that support this).
4039 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
4041 * The library now includes the <sys/mman.h> header file and memory
4042 management functions `mmap', `munmap', `mprotect', `msync', and
4043 `madvise', on systems that support those facilities.
4045 * The interface for `mcheck' has changed slightly: the function called to
4046 abort the program when an allocation inconsistency is detected now takes
4047 an argument that indicates the type of failure. The new function
4048 `mprobe' lets you request a consistency check for a particular block at
4049 any time (checks are normally done only when you call `free' or `realloc'
4052 * It is now possible to easily cross-compile the C library, building on one
4053 system a library to run on another machine and/or operating system. All
4054 you need to do is set the variable `HOST_CC' in `configparms' to the
4055 native compiler for programs to run on the machine you are building on (a
4056 few generator programs are used on Unix systems); set `CC' to the
4059 * The new function `fexecve' (only implemented on the GNU system) executes
4060 a program file given a file descriptor already open on the file.
4064 * Brendan Kehoe has contributed most of a port to the DEC Alpha
4065 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
4067 * You can set the variable `libprefix' in `configparms' to specify a prefix
4068 to be prepended to installed library files; this makes it easy to install
4069 the GNU C library to be linked as `-lgnuc' or whatever.
4071 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
4072 copies a limited number of characters from a string, and returns the
4073 address of the last character written.
4075 * You no longer need to check for whether the installed `stddef.h' is
4076 compatible with the GNU C library. configure now checks for you.
4078 * You can now define a per-stream `fileno' function to convert the
4079 stream's cookie into an integral file descriptor.
4081 * ``malloc (0)'' no longer returns a null pointer. Instead, it
4082 allocates zero bytes of storage, and returns a unique pointer which
4083 you can pass to `realloc' or `free'. The behavior is undefined if
4084 you dereference this pointer.
4086 * The C library now runs on Sony NEWS m68k machines running either
4087 NewsOS 3 or NewsOS 4.
4089 * The new `syscall' function is a system-dependent primitive function
4090 for invoking system calls. It has the canonical behavior on Unix
4091 systems, including unreliable return values for some calls (such as
4092 `pipe', `fork' and `getppid').
4094 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
4095 to `EAGAIN', which is the preferred name. On systems whose kernels
4096 use two distinct codes, the C library now translates EWOULDBLOCK to
4097 EAGAIN in every system call function.
4101 * The GNU C Library Reference Manual is now distributed with the library.
4102 `make dvi' will produce a DVI file of the printed manual.
4103 `make info' will produce Info files that you can read on line using C-h i
4104 in Emacs or the `info' program.
4105 Please send comments on the manual to bug-glibc-manual@gnu.org.
4107 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
4109 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
4111 * Jason Merrill has contributed a port to the Sequent Symmetry running
4112 Dynix version 3 (i386-sequent-dynix).
4114 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
4115 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
4117 * New function `memory_warnings' lets you arrange to get warnings when
4118 malloc is running out of memory to allocate, like Emacs gives you.
4120 * The C library now contains the relocating allocator used in Emacs 19 for
4121 its editing buffers. This allocator (ralloc) minimizes allocation
4122 overhead and fragmentation by moving allocated regions around whenever it
4123 needs to. You always refer to a ralloc'd region with a "handle" (a
4124 pointer to a pointer--an object of type `void **').
4126 * There is a new `printf' format: `%m' gives you the string corresponding
4127 to the error code in `errno'.
4129 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
4130 or `%[' conversion, but instead of filling in a fixed-sized buffer you
4131 pass, the `a' modifier says to fill in a `char **' you pass with a
4134 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
4135 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
4136 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
4138 * `mkstemp' is a traditional Unix function to atomically create and open a
4139 uniquely-named temporary file.
4143 * The standard location for the file that says what the local timezone is
4144 has changed again. It is now `/usr/local/etc/localtime' (or more
4145 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
4147 * The distribution no longer contains any files with names longer than 14
4150 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
4151 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
4153 * New functions `ttyslot' and `syslog' from 4.4 BSD.
4157 * The configuration process has changed quite a bit. The `configure'
4158 script is now used just like the configuration scripts for other GNU
4159 packages. The `sysdeps' directory hierarchy is much rearranged.
4160 The file `INSTALL' explains the new scheme in detail.
4162 * The header files no longer need to be processed into ANSI C and
4163 traditional C versions. There is just one set of files to install, and
4164 it will work with ANSI or old C compilers (including `gcc -traditional').
4166 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
4167 MIPS DECStation running Ultrix 4.
4169 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
4170 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
4171 made itself into a shared library.
4173 * Yet further improved support for the i386, running 4.3 BSD-like systems
4174 (such as Mach 3 with the Unix single-server), or System V.
4176 * New function `strncasecmp' to do case-insensitive string comparison
4177 with limited length.
4179 * New function `strsep' is a reentrant alternative to `strtok'.
4181 * New functions `scandir' and `alphasort' for searching directories.
4183 * New function `setenv' is a better interface to `putenv'.
4185 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
4186 function for traversing a directory tree.
4188 * The GNU obstack package is now also part of the C library.
4189 The new function `open_obstack_stream' creates a stdio stream that
4190 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
4191 formatted output directly to an obstack.
4193 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
4194 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
4196 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
4198 * The new functions `strfry' and `memfrob' do mysterious and wonderful
4199 things to your strings.
4201 * There are some new test programs: test-fseek, testmb, and testrand.
4203 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
4204 These ports are not finished, but are a good starting place for really
4205 supporting those systems.
4207 * `/etc/localtime' is now the standard location for the file that says what
4208 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
4209 This follows the general principle that `/etc' is the place for all local
4210 configuration files.
4212 * The C library header files now use `extern "C"' when used by the C++
4213 compiler, so the C library should now work with C++ code.
4215 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
4216 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
4219 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
4220 function which uses the `merge sort' algorithm, and is said to be
4221 significantly faster than the old GNU `qsort' function. Merge sort is
4222 now the standard `qsort' function. The new algorithm can require a lot
4223 of temporary storage; so, the old sorting function is called when the
4224 required storage is not available.
4226 * The C library now includes Michael Glad's Ultra Fast Crypt, which
4227 provides the Unix `crypt' function, plus some other entry points.
4229 * The code and header files taken from 4.4 BSD have been updated with the
4230 latest files released from Berkeley.
4232 ----------------------------------------------------------------------
4233 Copyright information:
4235 Copyright (C) 1992-2017 Free Software Foundation, Inc.
4237 Permission is granted to anyone to make or distribute verbatim copies
4238 of this document as received, in any medium, provided that the
4239 copyright notice and this permission notice are preserved,
4240 thus giving the recipient permission to redistribute in turn.
4242 Permission is granted to distribute modified versions
4243 of this document, or of portions of it,
4244 under the above conditions, provided also that they
4245 carry prominent notices stating who last changed them.
4248 version-control: never