NEWS

   1 GNU C Library NEWS -- history of user-visible changes.
   2 Copyright (C) 1992-2015 Free Software Foundation, Inc.
   3 See the end for copying conditions.
   4
   5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
   6 using `glibc' in the "product" field.
   7 \f
   8 Version 2.21
   9
  10 * The following bugs are resolved with this release:
  11
  12   6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
  13   15215, 15884, 16009, 16191, 16469, 16617, 16619, 16657, 16740, 16857,
  14   17192, 17266, 17273, 17344, 17363, 17370, 17371, 17411, 17460, 17475,
  15   17485, 17501, 17506, 17508, 17522, 17555, 17570, 17571, 17572, 17573,
  16   17574, 17582, 17583, 17584, 17585, 17589, 17594, 17601, 17608, 17616,
  17   17625, 17630, 17633, 17634, 17635, 17647, 17653, 17657, 17658, 17664,
  18   17665, 17668, 17682, 17702, 17717, 17719, 17722, 17723, 17724, 17725,
  19   17732, 17733, 17744, 17745, 17746, 17747, 17748, 17775, 17777, 17780,
  20   17781, 17782, 17791, 17793, 17796, 17797, 17803, 17806, 17834, 17844,
  21   17848
  22
  23 * A new semaphore algorithm has been implemented in generic C code for all
  24   machines. Previous custom assembly implementations of semaphore were
  25   difficult to reason about or ensure that they were safe. The new version
  26   of semaphore supports machines with 64-bit or 32-bit atomic operations.
  27   The new semaphore algorithm is used by sem_init, sem_open, sem_post,
  28   sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
  29
  30 * Port to Altera Nios II has been contributed by Mentor Graphics.
  31
  32 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
  33   implementations for powerpc64/powerpc64le.
  34   Implemented by Adhemerval Zanella (IBM).
  35
  36 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
  37   and powerpc64le.  This may improve lock scaling of existing programs on
  38   HTM capable systems.  The lock elision code is only enabled with
  39   --enable-lock-elision=yes.  Also, the TSX lock elision implementation for
  40   powerpc will issue a transaction abort on every syscall to avoid side
  41   effects being visible outside transactions.
  42
  43 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
  44   AArch64.  Contributed by ARM Ltd.
  45
  46 * i386 memcpy functions optimized with SSE2 unaligned load/store.
  47
  48 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
  49   under certain input conditions resulting in the execution of a shell for
  50   command substitution when the applicaiton did not request it. The
  51   implementation now checks WRDE_NOCMD immediately before executing the
  52   shell and returns the error WRDE_CMDSUB as expected.
  53
  54 * CVE-2012-3406 printf-style functions could run into a stack overflow when
  55   processing format strings with a large number of format specifiers.
  56
  57 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
  58   infinite loop if the DNS response contained a PTR record of an unexpected
  59   format.
  60
  61 * The minimum GCC version that can be used to build this version of the GNU
  62   C Library is GCC 4.6.  Older GCC versions, and non-GNU compilers, can
  63   still be used to compile programs using the GNU C Library.
  64
  65 * The GNU C Library is now built with -Werror by default.  This can be
  66   disabled by configuring with --disable-werror.
  67
  68 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
  69
  70 * The obsolete sigvec function has been removed.  This was the original
  71   4.2BSD interface that inspired the POSIX.1 sigaction interface, which
  72   programs have been using instead for about 25 years.  Of course, ABI
  73   compatibility for old binaries using sigvec remains intact.
  74
  75 * Merged gettext 0.19.3 into the intl subdirectory.  This fixes building
  76   with newer versions of bison.
  77
  78 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
  79   The original MIPS o32 hard-float ABI requires an FPU where double-precision
  80   registers overlay two consecutive single-precision registers.  MIPS32R2
  81   introduced a new FPU mode (FR=1) where double-precision registers extend the
  82   corresponding single-precision registers which is incompatible with the
  83   o32 hard-float ABI.  The MIPS SIMD ASE and the MIPSR6 architecture both
  84   require the use of FR=1 making a transition necessary.  New o32 ABI
  85   extensions enable users to migrate over time from the original o32 ABI
  86   through to the updated o32 FP64 ABI.  To achieve this the dynamic linker now
  87   tracks the ABI of any loaded object and verifies that new objects are
  88   compatible.  Mode transitions will also be requested as required and
  89   unsupportable objects will be rejected.  The ABI checks include both soft and
  90   hard float ABIs for o32, n32 and n64.
  91
  92   GCC 5 with GNU binutils 2.25 onwards:
  93   It is strongly recommended that all o32 system libraries are built using the
  94   new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
  95   with the original and all new o32 ABI extensions.  Configure a MIPS GCC
  96   compiler using --with-fp-32=xx to set this by default.
  97 \f
  98 Version 2.20
  99
 100 * The following bugs are resolved with this release:
 101
 102   6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
 103   15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
 104   16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
 105   16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
 106   16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
 107   16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
 108   16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
 109   16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
 110   16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
 111   16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
 112   16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
 113   16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
 114   17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
 115   17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
 116   17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
 117
 118 * Reverted change of ABI data structures for s390 and s390x:
 119   On s390 and s390x the size of struct ucontext and jmp_buf was increased in
 120   2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
 121   of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
 122   are preserved pointing straight to the same implementation as the old ones.
 123   Given that, new callers will simply provide a too-big buffer to these
 124   functions. Any applications/libraries out there that embed jmp_buf or
 125   ucontext_t in an ABI-relevant data structure that have already been rebuilt
 126   against 2.19 headers will have to rebuilt again. This is necessary in any
 127   case to revert the breakage in their ABI caused by the glibc change.
 128
 129 * Support for file description locks is added to systems running the
 130   Linux kernel. The standard file locking interfaces are extended to
 131   operate on file descriptions, not file descriptors, via the use of
 132   F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
 133   are associated with an open file instead of a process.
 134
 135 * Optimized strchr implementation for AArch64.  Contributed by ARM Ltd.
 136
 137 * The minimum Linux kernel version that this version of the GNU C Library
 138   can be used with is 2.6.32.
 139
 140 * Running the testsuite no longer terminates as soon as a test fails.
 141   Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
 142   with PASS or FAIL lines for individual tests.  A summary of the results is
 143   printed, including a list of failing lists, and "make check" exits with
 144   error status if there were any unexpected failures.  "make check
 145   stop-on-test-failure=y" may be used to keep the old behavior.
 146
 147 * The am33 port, which had not worked for several years, has been removed
 148   from ports.
 149
 150 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
 151   supported; they now act the same as _DEFAULT_SOURCE (but generate a
 152   warning).  Except for cases where _BSD_SOURCE enabled BSD interfaces that
 153   conflicted with POSIX (support for which was removed in 2.19), the
 154   interfaces those macros enabled remain available when compiling with
 155   _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
 156   test macros defined.
 157
 158 * Optimized strcmp implementation for ARMv7.  Contributed by ARM Ltd.
 159
 160 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
 161   This may improve lock scaling of existing programs on TX capable systems.
 162   The lock elision code is only built with --enable-lock-elision=yes and
 163   then requires a GCC version supporting the TX builtins.  With lock elision
 164   default mutexes are elided via __builtin_tbegin, if the cpu supports
 165   transactions. By default lock elision is not enabled and the elision code
 166   is not built.
 167
 168 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
 169   copy the path argument.  This allowed programs to cause posix_spawn to
 170   deference a dangling pointer, or use an unexpected pathname argument if
 171   the string was modified after the posix_spawn_file_actions_addopen
 172   invocation.
 173
 174 * All supported architectures now use the main glibc sysdeps directory
 175   instead of some being in a separate "ports" directory (which was
 176   distributed separately before glibc 2.17).
 177
 178 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
 179   On configurations that support it (all Linux configurations), it's now
 180   used regardless of the --enable-add-ons switch to configure.  It is no
 181   longer possible to build such configurations without pthreads support.
 182
 183 * Locale names, including those obtained from environment variables (LANG
 184   and the LC_* variables), are more tightly checked for proper syntax.
 185   setlocale will now fail (with EINVAL) for locale names that are overly
 186   long, contain slashes without starting with a slash, or contain ".." path
 187   components. (CVE-2014-0475)  Previously, some valid locale names were
 188   silently replaced with the "C" locale when running in AT_SECURE mode
 189   (e.g., in a SUID program).  This is no longer necessary because of the
 190   additional checks.
 191
 192 * On x86-64, the dynamic linker's lazy-binding support is now compatible
 193   with application code using Intel MPX instructions.  (With all previous
 194   versions, the MPX register state could be clobbered when making calls
 195   into or out of a shared library.)  Note that while the new dynamic
 196   linker is compatible with all known x86 hardware whether or not it
 197   supports Intel MPX, some x86 instruction-set emulators might fail to
 198   handle the new instruction encodings.  This is known to affect Valgrind
 199   versions up through 3.9 (but will be fixed in the forthcoming 3.10
 200   release), and might affect other tools that do instruction emulation.
 201
 202 * Support for loadable gconv transliteration modules has been removed.
 203   The support for transliteration modules has been non-functional for
 204   over a decade, and the removal is prompted by security defects.  The
 205   normal gconv conversion modules are still supported.  Transliteration
 206   with //TRANSLIT is still possible, and the //IGNORE specifier
 207   continues to be  supported. (CVE-2014-5119)
 208
 209 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
 210   IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
 211   resulting a denial-of-service security vulnerability in applications which
 212   use functions related to iconv. (CVE-2014-6040)
 213 \f
 214 Version 2.19
 215
 216 * The following bugs are resolved with this release:
 217
 218   156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
 219   7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
 220   12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
 221   14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
 222   15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
 223   15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
 224   15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
 225   15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
 226   15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
 227   15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
 228   15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
 229   15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
 230   16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
 231   16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
 232   16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
 233   16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
 234   16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
 235   16431, 16453, 16474, 16506, 16510, 16529
 236
 237 * Slovenian translations for glibc messages have been contributed by the
 238   Translation Project's Slovenian team of translators.
 239
 240 * The public headers no longer use __unused nor __block.  This change is to
 241   support compiling programs that are derived from BSD sources and use
 242   __unused internally, and to support compiling with Clang's -fblock
 243   extension which uses __block.
 244
 245 * CVE-2012-4412 The strcoll implementation caches indices and rules for
 246   large collation sequences to optimize multiple passes.  This cache
 247   computation may overflow for large collation sequences and may cause a
 248   stack or buffer overflow.  This is now fixed to use a slower algorithm
 249   which does not use a cache if there is an integer overflow.
 250
 251 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
 252   rules for large collation sequences to optimize multiple passes and falls
 253   back to alloca if malloc fails, resulting in a possible stack overflow.
 254   The implementation now falls back to an uncached collation sequence lookup
 255   if malloc fails.
 256
 257 * CVE-2013-4788 The pointer guard used for pointer mangling was not
 258   initialized for static applications resulting in the security feature
 259   being disabled. The pointer guard is now correctly initialized to a
 260   random value for static applications. Existing static applications need
 261   to be recompiled to take advantage of the fix (bug 15754).
 262
 263 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
 264   to the d_name member of struct dirent, or omit the terminating NUL
 265   character.  (Bugzilla #14699).
 266
 267 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
 268   aligned_alloc functions could allocate too few bytes or corrupt the
 269   heap when passed very large allocation size values (Bugzilla #15855,
 270   #15856, #15857).
 271
 272 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
 273   for AF_INET6 has been fixed (Bugzilla #16072).
 274
 275 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
 276   pap_CW, quz_PE, the_NP.
 277
 278 * Substantially revised locales: gd_GB, ht_HT
 279
 280 * The LC_ADDRESS field was updated to support country_car for almost all
 281   supported locales.
 282
 283 * ISO 1427 definitions were updated.
 284
 285 * ISO 3166 definitions were updated.
 286
 287 * The localedef utility now supports --big-endian and --little-endian
 288   command-line options to generate locales for a different system from that
 289   for which the C library was built.
 290
 291 * Binary locale files now only depend on the endianness of the system for
 292   which they are generated and not on other properties of that system.  As a
 293   consequence, binary files generated with new localedef may be incompatible
 294   with old versions of the GNU C Library, and binary files generated with
 295   old localedef may be incompatible with this version of the GNU C Library,
 296   in the following circumstances:
 297
 298   + Locale files may be incompatible on m68k systems.
 299
 300   + Locale archive files (but not separate files for individual locales) may
 301     be incompatible on systems where plain "char" is signed.
 302
 303 * The configure option --disable-versioning has been removed.  Builds with
 304   --disable-versioning had not worked for several years.
 305
 306 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
 307   cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
 308
 309 * SystemTap probes for malloc have been introduced.
 310
 311 * SystemTap probes for slow multiple precision fallback paths of
 312   transcendental functions have been introduced.
 313
 314 * Support for powerpc64le has been added.
 315
 316 * The soft-float powerpc port now supports e500 processors.
 317
 318 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
 319
 320 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
 321   set of header declarations that are enabled by default, even when other
 322   feature test macros or compiler options such as -std=c99 would otherwise
 323   disable some of those declarations.
 324
 325 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
 326   conflict with POSIX.  The libbsd-compat library (which was a dummy library
 327   that did nothing) has also been removed.
 328
 329 * Preliminary documentation about Multi-Thread, Async-Signal and
 330   Async-Cancel Safety has been added.
 331
 332 * Change of ABI data structures for s390 and s390x:
 333   On s390 and s390x the size of struct ucontext and jmp_buf was increased to
 334   allow for future hardware extensions. All library functions that accept or
 335   return these structures were versioned in order to provide backwards
 336   compatibility with existing code. However, not all cases can be handled
 337   with interface versioning. If an application embeds either structure into
 338   another structure and that structure is passed to another compilation unit
 339   which expects the newer larger-sized object then any access to the new
 340   fields will result in undefined behaviour. Similarly any access to fields
 341   that were moved by the enlarging of the structures will cause undefined
 342   behaviour. To fix the undefined behaviour all objects that are part of the
 343   final in-memory image must agree on the size of structures, and this may
 344   require recompilation.
 345 \f
 346 Version 2.18
 347
 348 * The following bugs are resolved with this release:
 349
 350   2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
 351   11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
 352   14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
 353   14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
 354   14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
 355   15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
 356   15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
 357   15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
 358   15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
 359   15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
 360   15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
 361   15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
 362   15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
 363   15759.
 364
 365 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
 366   has been fixed by disabling the use of pt_chown (Bugzilla #15755).
 367   Distributions can re-enable building and using pt_chown via the new configure
 368   option `--enable-pt_chown'.  Enabling the use of pt_chown carries with it
 369   considerable security risks and should only be used if the distribution
 370   understands and accepts the risks.
 371
 372 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
 373   #15078).
 374
 375 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
 376   fixed (Bugzilla #15330).
 377
 378 * Add support for calling C++11 thread_local object destructors on thread
 379   and program exit.  This needs compiler support for offloading C++11
 380   destructor calls to glibc.
 381
 382 * Improved worst case performance of libm functions with double inputs and
 383   output.
 384
 385 * Support for priority inherited mutexes in pthread condition variables on
 386   non-x86 architectures.
 387
 388 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
 389
 390 * Optimized string functions for AArch64.  Implemented by Marcus Shawcroft.
 391
 392 * Optimized string functions for ARM.  Implemented by Will Newton and
 393   Richard Henderson.
 394
 395 * Optimized libm functions for SPARC.  Implemented by David S. Miller.
 396
 397 * Support for building more of ARM glibc as Thumb-2 code.  Implemented by
 398   Richard Henderson.
 399
 400 * Support for building most of MIPS glibc as MIPS16 code.  Implemented by
 401   Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
 402
 403 * Added a benchmark framework to track performance of functions in glibc.
 404
 405 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
 406   It is based on draft TS 18661 and currently enabled as a GNU extension.
 407
 408 * On Linux, the clock function now uses the clock_gettime system call
 409   for improved precision, rather than old times system call.
 410
 411 * Added support for version-3 tz format files.  This is needed when using
 412   the tz database release 2013e or later, and affects a few unusual cases --
 413   currently only TZ='America/Godthab' for time stamps after 2037.
 414
 415 * Added new API functions pthread_getattr_default_np and
 416   pthread_setattr_default_np to get and set the default pthread
 417   attributes of a process.
 418
 419 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
 420   This may improve lock scaling of existing programs on TSX capable systems.
 421   When the --enable-lock-elision=yes parameter is specified at configure
 422   time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
 423   mutexes.
 424
 425 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
 426   availability).  Implemented by Ryan S. Arnold.
 427
 428 * Support added for POWER8 platform.  Implemented by Ryan S. Arnold.
 429 \f
 430 Version 2.17
 431
 432 * The following bugs are resolved with this release:
 433
 434   1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
 435   9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
 436   11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
 437   13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
 438   13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
 439   14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
 440   14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
 441   14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
 442   14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
 443   14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
 444   14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
 445   14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
 446   14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
 447   14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
 448   14879, 14889, 14893, 14898, 14914.
 449
 450 * Optimization of memcpy for MIPS.
 451
 452 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
 453   EMFILE has been fixed (Bugzilla #14889).
 454
 455 * The add-on ports collection is now distributed in the "ports" subdirectory
 456   of the main GNU C Library distribution, rather than separately.
 457
 458 * Port to ARM AArch64 contributed by Linaro.
 459
 460 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
 461   Optimized versions of memcpy, memset, and memcmp added for System z10 and
 462   zEnterprise z196.
 463   Implemented by Andreas Krebbel.
 464
 465 * The new function secure_getenv allows secure access to the environment,
 466   returning NULL if running in a SUID/SGID process.  This function replaces
 467   the internal function __secure_getenv.
 468
 469 * SystemTap static probes have been added into the dynamic linker.
 470   Implemented by Gary Benson.
 471
 472 * Optimizations of string functions strstr, strcasestr and memmem.
 473   Implemented by Maxim Kuvyrkov.
 474
 475 * The minimum Linux kernel version that this version of the GNU C Library
 476   can be used with is 2.6.16.
 477
 478 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
 479   powerpc POWER7.  Implemented by Will Schmidt.
 480
 481 * New configure option --disable-nscd builds the C library such that it
 482   never attempts to contact the Name Service Caching Daemon (nscd).
 483   New configure option --disable-build-nscd avoids building nscd itself;
 484   this is the default if --disable-nscd is used.
 485
 486 * Improved support for cross-compilation, including cross-testing and
 487   bootstrap builds without a previously built glibc.
 488
 489 * Several testsuite tests are now able to test multiple IFUNC variants of an
 490   interface, rather than just testing the one that would be chooen by
 491   default.
 492
 493 * New configure options --with-bugurl and --with-pkgversion, for
 494   distributors to use to embed their bug-reporting and package version
 495   information in --help and --version output.
 496
 497 * The ttyname and ttyname_r functions on Linux now fall back to searching for
 498   the tty file descriptor in /dev/pts or /dev if /proc is not available.  This
 499   allows creation of chroots without the procfs mounted on /proc.
 500
 501 * The `crypt' function now fails if passed salt bytes that violate the
 502   specification for those values.  On Linux, the `crypt' function will
 503   consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
 504   enabled, and fail on encrypted strings using the MD5 or DES algorithm
 505   when the mode is enabled.
 506
 507 * The `clock_*' suite of functions (declared in <time.h>) is now available
 508   directly in the main C library.  Previously it was necessary to link with
 509   -lrt to use these functions.  This change has the effect that a
 510   single-threaded program that uses a function such as `clock_gettime' (and
 511   is not linked with -lrt) will no longer implicitly load the pthreads
 512   library at runtime and so will not suffer the overheads associated with
 513   multi-thread support in other code such as the C++ runtime library.
 514
 515 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
 516   sat_IN, and szl_PL.
 517 \f
 518 Version 2.16
 519
 520 * The following bugs are resolved with this release:
 521
 522   174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
 523   2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
 524   3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
 525   4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
 526   6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
 527   10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
 528   11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
 529   12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
 530   13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
 531   13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
 532   13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
 533   13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
 534   13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
 535   13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
 536   13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
 537   13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
 538   13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
 539   13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
 540   13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
 541   14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
 542   14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
 543   14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
 544   14277, 14278.
 545
 546 * Support for the x32 ABI on x86-64 added.  The x32 target is selected by
 547   configuring glibc with:
 548         BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
 549   Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
 550   Implemented by H.J. Lu.
 551
 552 * ISO C11 support:
 553
 554   + define static_assert
 555
 556   + do not declare gets
 557
 558   + declare at_quick_exit and quick_exit also for ISO C11
 559
 560   + aligned_alloc.  NB: The code is deliberately allows the size parameter
 561     to not be a multiple of the alignment.  This is a moronic requirement
 562     in the standard but it is only a requirement on the caller, not the
 563     implementation.
 564
 565   + timespec_get added
 566
 567   + uchar.h support added
 568
 569   + CMPLX, CMPLXF, CMPLXL added
 570
 571   Implemented by Ulrich Drepper.
 572
 573 * Support for the IA-64 has been moved to ports.
 574
 575 * Remove support for anything but ELF binary format
 576
 577 * Checking versions of poll, ppoll added.
 578   Implemented by Ulrich Drepper.
 579
 580 * More generic and 64-bit performance optimizations to math functions.
 581   Implemented by Ulrich Drepper.
 582
 583 * New configure option --enable-obsolete-rpc makes the deprecated RPC
 584   headers and functions available at compile time as they were before
 585   version 2.14.  This option will be removed at some time in the future
 586   after the TI-RPC library becomes fully sufficient for the needs of
 587   existing applications.
 588
 589 * Compatibility code for Linux kernel versions before 2.4 has been removed.
 590   Note that glibc is not expected to work with any Linux kernel version
 591   before 2.6.
 592
 593 * New header <sys/auxv.h> and function getauxval allowing easy access to
 594   the AT_* key-value pairs passed from the Linux kernel.  The header also
 595   defines the HWCAP_* bits associated with the AT_HWCAP key.
 596
 597 * New locales: mag_IN
 598
 599 * New configure option --enable-systemtap builds SystemTap static probes
 600   into libc for setjmp and longjmp and into libpthread for various operations.
 601   So far the setjmp/longjmp probes and some of the libpthread probes are
 602   provided only for i*86 and x86_64.
 603   Implemented by Roland McGrath and Rayson Ho.
 604
 605 * Optimized expf for x86-32 and x86-64.  Implemented by Liubov Dmitrieva.
 606
 607 * More optimized functions for PowerPC.  Implemented by Adhemerval Zanella
 608   and Will Schmidt.
 609
 610 * More optimized functions for SPARC.  Implemented by David S. Miller.
 611
 612 * Improved support for cross-compilation, especially bootstrap builds
 613   without a previously built glibc.
 614
 615 * Ports for the TILE-Gx and TILEPro families of processors.  Contributed by
 616   Chris Metcalf from Tilera.
 617
 618 * Support for the old ARM ABI has been removed from ports.  Only the EABI is
 619   now supported for ARM processors.
 620
 621 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
 622   as the name of the dynamic linker, to distinguish it from the
 623   /lib/ld-linux.so.3 dynamic linker used for the base EABI.
 624
 625 * Support for CRIS has been removed from ports.
 626
 627 * A new class of installed header has been documented for low-level
 628   platform-specific functionality.  PowerPC added the first instance with a
 629   function to provide time base register access.  Contributed by Tulio
 630   Magno Quites Machado Filho.
 631
 632 * ix86 configurations now install header files that are consistent with
 633   what x86-64 configurations install.  These same header files can be used
 634   for -m32, -m64, or -mx32 builds.
 635   Contributed by H.J. Lu.
 636
 637 * Math library bug fixes.  A thorough audit of all open math library bugs was
 638   conducted by Joseph Myers.  Significant progress was made on many math
 639   library bugs resulting in more accurate exceptions and function results.
 640   Many thanks to all those that contributed including Andreas Jaeger for his
 641   patch review and work on the x87 trigonometric instruction issues.
 642
 643 * Timezone data is no longer installed.  Timezone-related binaries and scripts
 644   will continue to be installed.  Users should obtain their timezone data from
 645   their distribution provider or from the tzdata package at
 646   <ftp://munnari.oz.au/pub/>.
 647 \f
 648 Version 2.15
 649
 650 * The following bugs are resolved with this release:
 651
 652   6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
 653   12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
 654   13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
 655   13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
 656   13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
 657   13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
 658   13484, 13506, 13515, 13523, 13524, 13538, 13540
 659
 660 * New program pldd to list loaded object of a process
 661   Implemented by Ulrich Drepper.
 662
 663 * Add nss_db support back to glibc.  No more dependency on Berkeley db
 664   and support for initgroups lookups.
 665   Implemented by Ulrich Drepper.
 666
 667 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
 668   Contributed by HJ Lu.
 669
 670 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
 671   Contributed by HJ Lu.
 672
 673 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
 674   on x86-32 and x86-64.
 675   Contributed by Liubov Dmitrieva.
 676
 677 * Optimized strchr and strrchr for SSE on x86-32.
 678   Contributed by Liubov Dmitrieva.
 679
 680 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
 681   for x86-64 and x86-32.
 682   Contributed by Liubov Dmitrieva.
 683
 684 * New interfaces: scandirat, scandirat64
 685   Implemented by Ulrich Drepper.
 686
 687 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
 688   Implemented by Ulrich Drepper.
 689
 690 * nscd now also caches the netgroup database.
 691   Implemented by Ulrich Drepper.
 692
 693 * Integrate libm with gcc's -ffinite-math-only option.
 694   Implemented by Ulrich Drepper.
 695
 696 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
 697   to math functions.  Implemented by Ulrich Drepper.
 698
 699 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
 700   Implemented by Ulrich Drepper.
 701
 702 * New Linux interfaces: process_vm_readv, process_vm_writev
 703
 704 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
 705   Implemented by Ulrich Drepper.
 706
 707 * Optimized nearbyint and strcasecmp for PPC.
 708   Implemented by Adhemerval Zanella.
 709
 710 * New locales: bho_IN, unm_US, es_CU, ta_LK
 711 \f
 712 Version 2.14
 713
 714 * The following bugs are resolved with this release:
 715
 716   386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
 717   11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
 718   11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
 719   11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
 720   12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
 721   12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
 722   12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
 723   12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
 724   12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
 725   12795, 12811, 12813, 12814, 12841
 726
 727 * The RPC implementation in libc is obsoleted.  Old programs keep working
 728   but new programs cannot be linked with the routines in libc anymore.
 729   Programs in need of RPC functionality must be linked against TI-RPC.
 730   The TI-RPC implementation is IPv6 enabled and there are other benefits.
 731
 732   Visible changes of this change include (obviously) the inability to link
 733   programs using RPC functions without referencing the TI-RPC library and the
 734   removal of the RPC headers from the glibc headers.
 735   Implemented by Ulrich Drepper.
 736
 737 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
 738   syncfs, setns, sendmmsg
 739
 740 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
 741   yue_HK, lij_IT, mhr_RU
 742
 743 * New encodings: CP770, CP771, CP772, CP773, CP774
 744
 745 * New program sotruss to trace calls through PLTs
 746   Implemented by Ulrich Drepper.
 747
 748 * The malloc hook implementation is marked deprecated and will be removed
 749   from the default implementation in the next version.  The design never
 750   worked ever since the introduction of threads.  Even programs which do
 751   not create threads themselves can use multiple threads created internally.
 752 \f
 753 Version 2.13
 754
 755 * The following bugs are resolved with this release:
 756
 757   3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
 758   11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
 759   12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
 760   12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
 761   12378, 12394, 12397
 762
 763 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
 764
 765 * POWER7 optimizations: memset, memcmp, strncmp
 766
 767 * New optimized string functions for x86-64: strnlen (SSE2),
 768   strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
 769   Implemented by Ulrich Drepper.
 770 \f
 771 Version 2.12
 772
 773 * The following bugs are resolved with this release:
 774
 775   3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
 776   10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
 777   11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
 778   11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
 779   11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
 780   11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
 781   11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
 782   11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
 783
 784 * New interfaces: pthread_getname_np, pthread_setname_np
 785
 786 * New Linux interface: recvmmsg
 787
 788 * STT_GNU_IFUNC implemented for Sparc by David Miller.
 789
 790 * The dynamic linker now recognizes supported ABI versions from the
 791   EI_ABIVERSION field in the ELF header.
 792   Implemented by Ulrich Drepper.
 793
 794 * New NIS mode selector ADJUNCT_AS_SHADOW.  The passwd.adjunct.byname table
 795   will not be used to fill in password fields in the passwd.byname replies.
 796   Instead it is used to synthesize the shadow.byname table, should it be
 797   missing.  This is a useful mode in some installations involving Solaris.
 798   Implemented by Ulrich Drepper.
 799
 800 * New locales: kok_IN, sq_MK, cv_RU
 801 \f
 802 Version 2.11
 803
 804 * The following bugs are resolved with this release:
 805
 806   3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
 807   10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
 808   10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
 809   10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
 810   10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
 811   10789, 10817, 10823, 10840, 10847
 812
 813 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
 814   mkostemps64
 815   Implemented by Ulrich Drepper.
 816
 817 * Checking version of longjmp added that fails if an uninitialized stack
 818   frame would be created.  Implemented by Ulrich Drepper.
 819
 820 * STT_GNU_IFUNC is now supported in static executables.
 821   Implemented by H.J. Lu.
 822
 823 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
 824
 825 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
 826   strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
 827   strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
 828   Contributed by H.J. Lu.
 829
 830   strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
 831   Implemented by Ulrich Drepper.
 832
 833 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
 834   strstr, strcasestr.
 835   Contributed by H.J. Lu.
 836
 837 * Support for fma instruction in AVX on x86-64.
 838   Implemented by H.J. Lu and Ulrich Drepper.
 839
 840 * AVX support in x86-64 auditing support in ld.so.
 841   Implemented by H.J. Lu.
 842
 843 * STB_GNU_UNIQUE support added.
 844   Implemented by Ulrich Drepper.
 845
 846 * Implement second fallback mode for optimized DNS lookup for even more
 847   broken environments.  If two requests from the same port are not
 848   handled correctly close the socket and open a new one before sending
 849   the second request.  The 'single-request-reopen' option in /etc/resolv.conf
 850   can be used to select this mode right away, instead of rediscovering the
 851   necessity is every process again.
 852   Implemented by Ulrich Drepper.
 853
 854 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
 855   Implemented by Adam Tkac.
 856
 857 * Optimized iconv conversions for S390x.
 858   Implemented by Andreas Krebbel.
 859
 860 * Using condvars with PI mutexes is now more efficient due to kernel
 861   support for requeueing to PI futexes.  NPTL support added for x86-64.
 862   Implemented by Ulrich Drepper.
 863
 864 * New locales: ps_AF, my_MM
 865 \f
 866 Version 2.10
 867
 868 * The following bugs are resolved with this release:
 869
 870   697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
 871   9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
 872   9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
 873   9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
 874   10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
 875
 876 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
 877   Implemented by Ulrich Drepper.
 878
 879 * New Linux interfaces: accept4, fallocate, fallocate64.
 880   Implemented by Ulrich Drepper.
 881
 882 * Correct declarations of string function when used in C++ code.  This
 883   could lead to compile errors for invalid C++ code.
 884
 885 * XPG7/POSIX 2008 compilation environment.  Many GNU-specific functions are
 886   now in POSIX.
 887
 888 * New POSIX 2008 interface: psiginfo
 889   Implemented by Ulrich Drepper.
 890
 891 * New ISO C++1x interfaces: quick_exit, at_quick_exit
 892   Implemented by Ulrich Drepper.
 893
 894 * Support for selecting between multiple function definitions at runtime
 895   using STT_GNU_IFUNC symbols.  Implemented by Ulrich Drepper.
 896
 897 * The libcrypt library can now use the hash function implementations in
 898   NSS.  Implemented by Ulrich Drepper.
 899
 900 * The malloc implementation can be compiled to be less memory efficient
 901   but higher performing in multi-threaded programs.
 902   Implemented by Ulrich Drepper.
 903
 904 * New locales: nan_TW@latin, ks_IN
 905
 906 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
 907   Implemented by Ulrich Drepper.
 908
 909 * Extended printf hook support.  It is possible to use user-defined types
 910   and extend existing format specifiers.
 911   Implemented by Ulrich Drepper.
 912
 913 * Handling for group shadow files has been added.
 914   Implemented by Ulrich Drepper.
 915
 916 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
 917   servers (the case, e.g., for some people using the built-in DNS
 918   server in ADSL modems/routers).  There is a once-per-process timeout
 919   in case of a broken server.  To avoid it, users can run nscd or put
 920   'options single-request' in /etc/resolv.conf.
 921   Implemented by Ulrich Drepper.
 922 \f
 923 Version 2.9
 924
 925 * The following bugs are resolved with this release:
 926
 927   3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
 928   6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
 929   6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
 930   6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
 931   6968, 6974, 6980, 6995, 7008, 7009, 7029
 932
 933 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
 934   up at the same time.  Implemented by Ulrich Drepper.
 935
 936 * TLS descriptors for LD and GD on x86 and x86-64.
 937   Implemented by Alexandre Oliva.
 938
 939 * getaddrinfo now handles DCCP and UDPlite.
 940   Implemented by Ulrich Drepper.
 941
 942 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
 943   htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
 944   Implemented by Ulrich Drepper.
 945
 946 * New implementation of memmem, strstr, and strcasestr which is O(n).
 947   Implemented by Eric Blake.
 948
 949 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
 950
 951 * Implement "e" option for popen to open file descriptor with the
 952   close-on-exec flag set.  Implemented by Ulrich Drepper.
 953
 954 * Implement "b" mode for fmemopen.  In this mode writes writes don't
 955   implicitly add a NUL byte and seeks from the end of the buffer really
 956   use the buffer end, not the string length as the basis.
 957   Implemented by Ulrich Drepper.
 958
 959 * Many functions, exported and internal, now atomically set the close-on-exec
 960   flag when run on a sufficiently new kernel.  Implemented by Ulrich Drepper.
 961
 962 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
 963   Sinhala)
 964   Implemented by Pravin Satpute.
 965
 966 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
 967 \f
 968 Version 2.8
 969
 970 * The following bugs are resolved with this release:
 971
 972   2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
 973   5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
 974   5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
 975   5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
 976   5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
 977   5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
 978   5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
 979
 980 * New locales: bo_CN, bo_IN, shs_CA.
 981
 982 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
 983
 984 * Sorting rules for some Indian languages (Devanagari and Gujarati).
 985   Implemented by Pravin Satpute.
 986
 987 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
 988
 989 * nscd caches now all timeouts for DNS entries
 990   Implemented by Ulrich Drepper.
 991
 992 * nscd is more efficient and wakes up less often.
 993   Implemented by Ulrich Drepper.
 994
 995 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
 996   vdprintf, and obstack_vprintf.
 997   Implemented by Jakub Jelinek.
 998
 999 * Faster memset for x86-64.
1000   Implemented by Harsha Jagasia and H.J. Lu.
1001
1002 * Faster memcpy on x86.
1003   Implemented by Ulrich Drepper.
1004
1005 * ARG_MAX is not anymore constant on Linux.  Use sysconf(_SC_ARG_MAX).
1006   Implemented by Ulrich Drepper.
1007
1008 * Faster sqrt and sqrtf implemention for some PPC variants.
1009   Implemented by Steven Munroe.
1010 \f
1011 Version 2.7
1012
1013 * The following bugs are resolved with this release:
1014
1015   4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
1016   4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
1017   4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
1018   4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
1019   5071, 5103, 5104, 5112, 5113, 5184, 5186
1020
1021 * More checking functions: fread, fread_unlocked, open*, mq_open.
1022   Implemented by Jakub Jelinek and Ulrich Drepper.
1023
1024 * Extend fortification to C++.  Implemented by Jakub Jelinek.
1025
1026 * Implement 'm' modifier for scanf.  Add stricter C99/SUS compliance
1027   by not recognizing 'a' as a modifier when those specs are requested.
1028   Implemented by Jakub Jelinek.
1029
1030 * PPC optimizations to math and string functions.
1031   Implemented by Steven Munroe.
1032
1033 * New interfaces: mkostemp, mkostemp64.  Like mkstemp* but allow additional
1034   options to be passed.  Implemented by Ulrich Drepper.
1035
1036 * More CPU set manipulation functions.  Implemented by Ulrich Drepper.
1037
1038 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
1039   Implemented by Ulrich Drepper.
1040
1041 * Handle private futexes in the NPTL implementation.
1042   Implemented by Jakub Jelinek and Ulrich Drepper.
1043
1044 * Add support for O_CLOEXEC.  Implement in Hurd.  Use throughout libc.
1045   Implemented by Roland McGrath and Ulrich Drepper.
1046
1047 * Linux/x86-64 vDSO support.  Implemented by Ulrich Drepper.
1048
1049 * SHA-256 and SHA-512 based password encryption.
1050   Implemented by Ulrich Drepper.
1051
1052 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1053   ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1054   yo_NG.
1055
1056 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1057   Implemented by Ulrich Drepper.
1058 \f
1059 Version 2.6
1060
1061 * The following bugs are resolved with this release:
1062
1063   3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1064   3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1065   3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1066   3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1067   3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1068   4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1069   4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1070   4702, 4858
1071
1072 * New Linux interfaces: epoll_pwait, sched_getcpu.
1073
1074 * New generic interfaces: strerror_l.
1075
1076 * nscd can now cache the services database.   Implemented by Ulrich Drepper.
1077 \f
1078 Version 2.5
1079
1080 * The following bugs are resolved with this release:
1081
1082   39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1083   1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1084   2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1085   2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1086   2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1087   2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1088   2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1089   3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1090   3225, 3251, 3252, 3253, 3273
1091
1092 * For Linux, the sorting of addresses returned by getaddrinfo now also
1093   handles rules 3, 4, and 7 from RFC 3484.  I.e., all rules are handled.
1094   Implemented by Ulrich Drepper.
1095
1096 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1097   Implemented by Ulrich Drepper.
1098
1099 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1100
1101 * New iconv module for MIK.  Contributed by Alexander Shopov.
1102
1103 * For sites with broken group and/or passwd database, the auto-propagate
1104   option of nscd can prevent creating ID lookup entries from the results
1105   of a name lookup and vice versa.   This usually is no problem but some
1106   site might have problems with the default behavior.
1107   Implemented by Ulrich Drepper.
1108
1109 * Iterating over entire database in NIS can be slow.  With the
1110   SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1111   to trade time for memory.  The entire database will be read at once.
1112   Implemented by Ulrich Drepper.
1113
1114 * The interfaces introduced in RFC 3542 have been implemented by
1115   Ulrich Drepper.
1116
1117 * Support for the new ELF hash table format was added by Ulrich Drepper.
1118
1119 * Support for priority inheritance mutexes added by Jakub Jelinek and
1120   Ulrich Drepper.
1121
1122 * Support for priority protected mutexes added by Jakub Jelinek.
1123
1124 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1125   or_IN, csb_PL, fy_NL, sr_ME.
1126 \f
1127 Version 2.4
1128
1129 * More overflow detection functions.
1130
1131 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1132   IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1133
1134   More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1135   IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1136   IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1137   IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1138   IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1139   by Masahide Washizawa.
1140
1141 * It is now possible to install audit libraries for the dynamic linker using
1142   LD_AUDIT.  Implemented by Ulrich Drepper.
1143
1144 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1145   longer supported.  The new NPTL implementation requires Linux 2.6 kernels.
1146   For a libc and libpthread that works well on Linux 2.4 kernels, we
1147   recommend using the stable 2.3 branch.
1148
1149 * The new function open_wmemstream acts like open_memstream,
1150   but uses a wchar_t wide character buffer.
1151
1152 * The new function ppoll is an improved version of poll, similar to pselect.
1153
1154 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1155   futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1156   renameat, unlinkat, linkat, symlinkat, readlinkat.
1157
1158 * New Linux kernel system calls: unshare,
1159   inotify_init, inotify_add_watch, inotify_rm_watch.
1160
1161 * The euidaccess function is now also known by the alias eaccess,
1162   for compatibility with some other systems.
1163
1164 * Timezone data updated to 2006b version.
1165 \f
1166 Version 2.3.6
1167
1168 * The following bugs are resolved with this release:
1169
1170   38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1171   1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1172   1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1173   1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1174   1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1175   1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1176
1177   Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1178
1179 * As of this release, GCC 4 can be used to compile the C Library.
1180
1181 * Timezone data updated to 2005m version.
1182 \f
1183 Version 2.3.5
1184
1185 * The following bugs are resolved with this release:
1186
1187   284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1188   722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1189   737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1190   777, 787, 821, 822, 823, 825
1191
1192   Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1193 \f
1194 Version 2.3.4
1195
1196 * Support for RFC 3678.  Real implementations exist only for Linux so far.
1197   Implemented by Ulrich Drepper.
1198
1199 * nscd can now cache entries persistently.  Expiring entries are reloaded.
1200   For speedups the cache can be shared in memory with client processes.
1201   Implemented by Ulrich Drepper.
1202
1203 * nscd can now perform SELinux checks.
1204   Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1205
1206 * getaddrinfo queries are now cached.  Canonical name lookup is performed
1207   efficiently.
1208   Implemented by Ulrich Drepper.
1209
1210 * The nothrow function attribute is used when headers are used by gcc when
1211   compiling C code.  This can avoid significant amounts of exception
1212   handling data.
1213
1214 * The malloc functions perform more error checking and are stricter when
1215   it comes to reacting on errors.  The default action is to terminate
1216   the process after showing an error message.  Implemented by Ulrich Drepper.
1217
1218 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1219   lookups anymore unless explicitly requested.  Implemented by Ulrich Drepper.
1220
1221 * Namespaces in ld.so are implemented.  DSOs can be loaded in separate
1222   namespaces using the new function dlmopen().  This feature is of course,
1223   like most other dynamic loading functionality, not available in statically
1224   linked applications.  Implemented by Ulrich Drepper.
1225
1226 * Low-overhead boundary checking variants of string and some stdio functions
1227   were added.  These are to be used in conjunction with a gcc patch by
1228   Jakub Jelinek which adds calls to these functions if possible.
1229   Implemented by Jakub Jelinek and Ulrich Drepper.
1230
1231 * Old code for several operating systems and machine architectures that
1232   have not been in working condition in a long time have been removed from
1233   the main source tree maintained by the GNU C Library's maintainers.
1234   These files are now reside in the separate `ports' source module
1235   that is usable as an add-on when building the library.
1236 \f
1237 Version 2.3.3
1238
1239 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1240   interrogate the dynamic linker, compatible with the Solaris interface.
1241
1242 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1243   implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1244
1245 * getifaddrs now uses the netlink interface on Linux to get its information.
1246   Implemented by Thorsten Kukuk.
1247
1248 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1249   Implemented by Ulrich Drepper.
1250
1251 * support for non-executable stacks on x86 has been added.  Changes mostly
1252   by Roland McGrath.
1253
1254 * regex is now much faster for multibyte locales.  Changes by Jakub Jelinek
1255   and Ulrich Drepper.
1256
1257 * getaddrinfo now performs destination address selection according to
1258   RFC 3484.
1259 \f
1260 Version 2.3.2
1261
1262 * Thread-safe interfaces for many functions that access locale data
1263   were added in version 2.3, but these features were omitted from NEWS.
1264   Many functions have variants with an `_l' suffix that take a `locale_t'
1265   object as a parameter rather than consulting the current locale.
1266   The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1267   create and maintain `locale_t' objects.  Additionally, the new function
1268   `uselocale' sets "the current locale" (as used by functions not so
1269   parameterized) set for an individual thread.  These features were added
1270   in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1271
1272 * The functions getresuid, getresgid, setresuid, and setresgid, which
1273   have long been available on Linux, are now declared in <unistd.h>
1274   and are now also available on the Hurd.
1275
1276 * ELF thread-local storage support (TLS) now works on x86-64.
1277
1278 * The new dynamic string token $LIB is expanded in shared library names.
1279   This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1280
1281 * Aldy Hernandez contributed complete software floating point support for
1282   PowerPC machines with no FPU.
1283
1284 * fexecve is implemented on Linux.
1285
1286 * The `btowc' function should work at least twice as fast due to
1287   specialized callbacks in the iconv modules.  Implemented by Bruno Haible.
1288
1289 * With approriate thread add-ons cancelable functions are now implemented
1290   in libc.so as well.  No need to call the function in libpthread.  This
1291   change allowed to finally disable the incorrect and expensive handling
1292   of weak definition in ld.so.
1293
1294 * Yet more PLT entries in libc.so have been removed.  We finally arrived
1295   at the bare minimum.  Startup times improved appropriately.
1296
1297 * Support for the new Linux/x86 system call interface was added.  The
1298   AT_SYSINFO auxiliary vector entry is recognized and handled.
1299 \f
1300 Version 2.3
1301
1302 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1303   charsets.
1304
1305 * iconv (the program and the interface) now accepts empty names (excluding
1306   options like //TRANSLIT) to mean "use charset of current locale".
1307
1308 * localedef can now transliterate characters in strings which are not in
1309   the provided charmap.  The information from the input locale is used.
1310
1311 * Prelinking support was added for ELF targets.  This requires additional
1312   tools and recent versions of the GNU binutils.  Contributed by Jakub Jelinek.
1313
1314 * Read-only stdio streams now use mmap to speed up operation by eliminating
1315   copying and buffer underflows.  To use add 'm' to the mode string of
1316   the fopen/fdopen/freopen call.  Implemented by Ulrich Drepper.
1317
1318 * The malloc functions were completely rewritten by Wolfram Gloger based
1319   on Doug Lea's malloc-2.7.0.c.
1320
1321 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1322   implementation of regex.
1323
1324 * Bruno Haible upgraded the iconv and locale implementation to support
1325   Unicode 3.2.
1326
1327 * Contents of the LC_* and LANG environment variables in the CEN style are
1328   not recognized anymore.   It never was used.  Change by Ulrich Drepper.
1329
1330 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1331   thread-local storage (TLS) ABI on some platforms.
1332   Changes by Ulrich Drepper.  SH support by Kaz Kojima.
1333
1334 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1335   EUC-JISX0213, and TSCII.
1336
1337 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1338   BSD-compatible interface for getting all network interface addresses.
1339   Implementation for IPv4 by Roland McGrath.
1340
1341 * Loading of locale data is faster due to the introduction of a locale
1342   archive.  Implemented by Roland McGrath and Ulrich Drepper.
1343
1344 * Startup times are significantly reduced by not using exported functions
1345   inside the library itself.  Changes by Jakub Jelinek, Roland McGrath,
1346   and Ulrich Drepper.
1347
1348 * Steven Munroe contributed a port to PowerPC64/Linux.
1349 \f
1350 Version 2.2.6
1351
1352 * The Hurd now uses the GNU libio implementation of stdio rather than the
1353   old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1354
1355 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1356   with the same behavior as the Linux system call of the same name.
1357 \f
1358 Version 2.2.5
1359
1360 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1361   128-bit long double format.
1362
1363 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1364   IBM1161, and IBM1162 charsets.
1365
1366 * Andreas Jaeger contributed a port to x86-64/Linux.
1367
1368 * Peter Bruin contributed a port to PowerPC/Hurd.
1369
1370 * libc functions using I/O streams now can handle wide-oriented streams
1371   as well.
1372
1373 * optimizations in the dynamic linker.  Binaries created by recent binutils
1374   versions start up quicker due to reduced time spent on relocations.
1375
1376 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1377 \f
1378 Version 2.2.4
1379
1380 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1381   asinh, atanh, j0 for the 128-bit long double format.
1382
1383 * Bruno Haible updated all the code handling Unicode in some form to
1384   support Unicode 3.1.
1385
1386 * Speed of regex for single-byte locales is back to previous levels.
1387   Patch by Isamu Hasegawa.
1388
1389 * Alpha, SPARC, and IA-64 now also using floating stacks.
1390
1391 * Startup time of internationalized applications greatly improved through
1392   iconv cache.  Use iconvconfig to generate the cache file.
1393   Contributed by Ulrich Drepper.
1394
1395 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1396   severe performance problems.  Patch by David Mosberger.
1397
1398 * The Hurd port got a lot more functionality like AIO, various stdio
1399   extensions, etc.  Mainly done by Roland McGrath.
1400
1401 * mtrace can now lookup symbols in shared libraries.
1402 \f
1403 Version 2.2.3
1404
1405 * Intel's IA-64 math library is largely integrated.  It provides fast and
1406   accurate implementatations for most basic and standard math functions
1407   in float, double, and long double format.
1408
1409 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1410   and asin for the 96-bit long double format and asin, log, tan for the
1411   128-bit long double format.
1412
1413 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1414   The basic double functions exist today.  Contributed by Abraham Ziv
1415   <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1416   <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1417
1418 * An asynchronous name lookup library was added.  The interface is designed
1419   after POSIX AIO.  The proposal was circulated beforehand to get comments.
1420   No negative ones came in.  Implemented by Ulrich Drepper.
1421
1422 * Port to S390/64bit contributed by Martin Schwidefsky
1423   <schwidefsky@de.ibm.com>.
1424
1425 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1426   of functions for Linux/IA-64.
1427
1428 * The RPC code is now thread safe.  Threads can now use the same service
1429   of different services at the same time.  Patch by Eric Norum
1430   <eric.norum@usask.ca> with some help by Ulrich Drepper.
1431
1432 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1433   family of functions for Linux/S390.
1434
1435 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1436   of functions for Linux/x86.
1437
1438 * Port to Linux/CRIS contributed by Axis Communications.
1439 \f
1440 Version 2.2.2
1441
1442 * Lots of headers were cleaned up.  Using the tool in the conform/ subdir
1443   we can now check for namespace violations and missing declarations.  The
1444   result is that almost all headers are now Unix-compliant (as defined in
1445   the upcoming XPG6).  The negative side is that some programs might need
1446   corrections, too, if they depend on the incorrect form of the headers in
1447   previous versions which defined too many symbols and included too many
1448   other headers.
1449
1450 * regex now handles multibyte character sets correctly.
1451   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1452
1453 * iconv (the program) does now conform to the upcoming XPG6 and handles
1454   charmaps.  Instead of the charset names the path of charmaps can be
1455   provided and the conversion happens based on this data.
1456   Contributed by Ulrich Drepper.
1457
1458 * The locale program now provides detailed information about the installed
1459   locales.  While
1460
1461     locale -a
1462
1463   only lists the names of the supported locales
1464
1465     locale -a --verbose
1466
1467   provides details such as country, language, and codeset name.
1468   Contributed by Ulrich Drepper.
1469 \f
1470 Version 2.2.1
1471
1472 * The gencat program now parses the input file according to the charset
1473   selected by the LC_CTYPE category.  This is important for stateful
1474   character sets.  To make generating catalogs easier there is a way
1475   to overwrite the charset selected by the locale: before the first
1476   message or $ quote line the catalog can contain a line like
1477
1478     $ codeset=ISO-8859-2
1479
1480   to select the charset (ISO-8859-2 in this case).
1481
1482   Implemented by Shinya Hanataka and Ulrich Drepper.
1483
1484 * New codeset conversion modules: IBM-922  (Estonia PC codeset),
1485   IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1486   Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1487
1488 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1489   <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1490
1491 * The LANGUAGE environment variable is now ignored unless the locale is
1492   changed from the default "C" locale.
1493
1494 * The usual bug fixes.
1495 \f
1496 Version 2.2
1497
1498 * Greg McGary added runtime support for bounds checking using gcc's
1499   new -fbounded-pointers option.  ix86 target is complete.  PowerPC
1500   is in progress.
1501
1502 * Thorsten Kukuk added secure mode support to nscd.
1503
1504 * The Berkeley db libraries have been removed.
1505
1506   Related, the nss_db module is now in a separate package since it
1507   obviously requires a database library being available.
1508
1509 * Wide character I/O streams implemented by Ulrich Drepper.
1510
1511 * Functions from the extended socket API added by Ulrich Drepper.
1512
1513 * Functions feenableexcept and fedisableexcept to control the
1514   behaviour of individual exceptions have been added by Andreas Jaeger.
1515
1516 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1517
1518 * The resolver code has been updated from bind 8.2.3-T5B which supports
1519   threads.  The integration was done by Andreas Jaeger, Adam D. Bradley,
1520   and Mark Kettenis.
1521
1522   This change could in some situations effect backward compatibility.  Since
1523   now `_res' is a thread-local instead of a global variable, modifying it
1524   in one thread does not have any effect in other threads.
1525
1526   The resolver library was also extended to allow IPv6 as the transport
1527   protocol for the requests.  This work was done by Stig Venaas.
1528
1529 * Compatibility code for K&R C compilers has been removed from the
1530   header files.  A ISO C compiler is needed to use the library
1531   (conforming to either C89 or C99 standard).
1532
1533 * Complete rewrite of the localedef program to support multibyte character
1534   sets.  Implement handling of ISO 14651 and ISO 14652.  Rewrite strcoll,
1535   strxfrm, wcscoll, and wcsxfrm functions.  Make isw*() functions work.
1536   Implemented by Ulrich Drepper.
1537
1538   Bruno Haible significantly improved the generation and use of the data
1539   structures for the wide character tables.
1540
1541 * Plural handling in gettext implemented by Ulrich Drepper.
1542
1543 * The utmp daemon has been removed.
1544
1545 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1546
1547 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1548   and Yutaka Niibe.
1549
1550 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1551
1552 * POSIX barriers implemented by Kaz Kylheku.
1553
1554 * POSIX spawn function family implemented by Ulrich Drepper.
1555
1556 * POSIX spinlocks are now available.
1557
1558 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1559
1560 * the configure option --enable-kernel=X.Y.Z allows to strip out
1561   compatibility for kernel versions before X.Y.Z.  This is currently only
1562   implemented for Linux.
1563
1564 * the sockaddr_in6 structure changed.  The IPv6 working group added a new
1565   field sin6_scope_id.  This means that all programs using IPv6 should be
1566   recompiled.  Don't expect binary compatibility with previous glibc
1567   versions.
1568
1569 * various conversion modules for IBM character sets contributed by
1570   Masahide Washizawa.
1571
1572 * IA-64 port by Jes Sorensen and HJ Lu.
1573 \f
1574 Version 2.1.3
1575
1576 * bug fixes
1577
1578 \f
1579 Version 2.1.2
1580
1581 * bug fixes
1582
1583 \f
1584 Version 2.1.1
1585
1586 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1587
1588 * New xdr functions are added; some rpc functions are now 64bit clean.
1589
1590 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1591
1592 * Fixed known incompatibilities with glibc 2.0.
1593
1594 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1595
1596 * Optimized a number of functions (especially the ELF dynamic loader).
1597
1598 * Update timezone data files.
1599
1600 * lots of charmaps corrections
1601
1602 * some new locale definitions and charmaps
1603
1604 \f
1605 Version 2.1
1606
1607 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1608   conform to POSIX member type requirements.  Symbol versions have been
1609   adjusted as needed within the library, and for direct use by applications,
1610   but there is potential for problems if third-party libraries use
1611   struct timeval as part of their interface.  This does not present
1612   a problem for X and other "essential" system libraries.
1613
1614 * An additional locale model to support C++ Standard Library locale
1615   model and probably more was implemented by Ulrich Drepper.
1616
1617 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1618   symbol level.
1619
1620 * Miles Bader provided the `argp' function family to support hierachical
1621   command line argument parsing, layered on top of getopt.
1622
1623 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1624
1625 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1626   numbers.
1627
1628 * scanf recognizes the %a and %A format for scanning floating point numbers.
1629
1630 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1631   information and interfaces for the available integer types.
1632
1633 * about 130 new math functions were added to implement the ISO C9x math
1634   library.
1635
1636 * the new header <complex.h> contains definitions of the complex math
1637   functions from ISO C 9X.
1638
1639 * the new header <tgmath.h> defines generic macros to use complex or
1640   real valued functions.
1641
1642 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1643
1644 * Andreas Jaeger provided a test suite for the math library.
1645
1646 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1647
1648 * Ulrich Drepper added character set conversion functions (iconv).
1649
1650 * Optimized string functions have been added.
1651
1652 * The localedata addon is now part of glibc.
1653
1654 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1655
1656 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1657   daemon for NSS (nscd).
1658
1659   Missing a better place here are some numbers on improvements.  Under
1660   Linux 2.1.125 un-tar-ing the kernel sources takes
1661
1662                                   user  system     wall
1663
1664     using local files           12.19s   6.88s   22.91s
1665
1666     using NIS                   13.92s   8.91s   26.34s
1667
1668     using NIS & nscd            10.37s   7.34s   25.30s
1669
1670     using NIS+                  27.57s  30.37s  640.46s
1671
1672     using NIS+ & nscd           10.25s   7.83s   26.51s
1673
1674     using NIS & old nscd [1]    13.83s   8.32s   29.60s
1675
1676   Keep in mind that non-namelookup related operations dominate above times.
1677   It was just a common complain that using NIS+ unpacking the kernel is
1678   horribly slow.
1679
1680   [1] The old nscd implementation is not available anymore since it was
1681   distributed with glibc up to version 2.0.98 and thus is now replaced.
1682
1683 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1684
1685 * Mark Kettenis provided a Hesiod NSS module.
1686
1687 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1688   and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1689
1690 * rcmd can now handle netgroups (Dick Streefland).
1691
1692 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1693   Bambrough.
1694
1695 * Support for the IPv6 protocol has been added to the socket API, as per the
1696   latest draft standards.
1697
1698 * Support for Linux 2.2 has been added.
1699
1700 * Interface changes relative to the latest 2.0.x release:
1701 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1702 addseverity                     NEW: Unix98
1703 alphasort64                     NEW: LFS
1704 argp_err_exit_status            NEW: argp, GNU ext
1705 argp_error                      NEW: argp, GNU ext
1706 argp_failure                    NEW: argp, GNU ext
1707 argp_help                       NEW: argp, GNU ext
1708 argp_parse                      NEW: argp, GNU ext
1709 argp_program_bug_address        NEW: argp, GNU ext
1710 argp_program_version            NEW: argp, GNU ext
1711 argp_program_version_hook       NEW: argp, GNU ext
1712 argp_state_help                 NEW: argp, GNU ext
1713 argp_usage                      NEW: argp, GNU ext
1714 authdes_create                  NEW: Secure RPC
1715 authdes_getucred                NEW: Secure RPC
1716 authdes_pk_create               NEW: Secure RPC
1717 backtrace                       NEW: GNU ext.
1718 backtrace_symbols               NEW: GNU ext.
1719 backtrace_symbols_fd            NEW: GNU ext.
1720 cacos                           NEW: ISO C 9x
1721 cacosf                          NEW: ISO C 9x
1722 cacosh                          NEW: ISO C 9x
1723 cacoshf                         NEW: ISO C 9x
1724 cacoshl                         NEW: ISO C 9x
1725 cacosl                          NEW: ISO C 9x
1726 capget                          NEW: kernel
1727 capset                          NEW: kernel
1728 carg                            NEW: ISO C 9x
1729 cargf                           NEW: ISO C 9x
1730 cargl                           NEW: ISO C 9x
1731 casin                           NEW: ISO C 9x
1732 casinf                          NEW: ISO C 9x
1733 casinh                          NEW: ISO C 9x
1734 casinhf                         NEW: ISO C 9x
1735 casinhl                         NEW: ISO C 9x
1736 casinl                          NEW: ISO C 9x
1737 catan                           NEW: ISO C 9x
1738 catanf                          NEW: ISO C 9x
1739 catanh                          NEW: ISO C 9x
1740 catanhf                         NEW: ISO C 9x
1741 catanhl                         NEW: ISO C 9x
1742 catanl                          NEW: ISO C 9x
1743 cbc_crypt                       NEW: Secure RPC
1744 ccos                            NEW: ISO C 9x
1745 ccosf                           NEW: ISO C 9x
1746 ccosh                           NEW: ISO C 9x
1747 ccoshf                          NEW: ISO C 9x
1748 ccoshl                          NEW: ISO C 9x
1749 ccosl                           NEW: ISO C 9x
1750 cexp                            NEW: ISO C 9x
1751 cexpf                           NEW: ISO C 9x
1752 cexpl                           NEW: ISO C 9x
1753 cimag                           NEW: ISO C 9x
1754 cimagf                          NEW: ISO C 9x
1755 cimagl                          NEW: ISO C 9x
1756 clearerr_locked                 REMOVED
1757 clntunix_create                 NEW: sunrpc ext
1758 clog                            NEW: ISO C 9x
1759 clog10                          NEW: ISO C 9x
1760 clog10f                         NEW: ISO C 9x
1761 clog10l                         NEW: ISO C 9x
1762 clogf                           NEW: ISO C 9x
1763 clogl                           NEW: ISO C 9x
1764 conj                            NEW: ISO C 9x
1765 conjf                           NEW: ISO C 9x
1766 conjl                           NEW: ISO C 9x
1767 cpow                            NEW: ISO C 9x
1768 cpowf                           NEW: ISO C 9x
1769 cpowl                           NEW: ISO C 9x
1770 cproj                           NEW: ISO C 9x
1771 cprojf                          NEW: ISO C 9x
1772 cprojl                          NEW: ISO C 9x
1773 creal                           NEW: ISO C 9x
1774 crealf                          NEW: ISO C 9x
1775 creall                          NEW: ISO C 9x
1776 creat64                         NEW: LFS
1777 csin                            NEW: ISO C 9x
1778 csinf                           NEW: ISO C 9x
1779 csinh                           NEW: ISO C 9x
1780 csinhf                          NEW: ISO C 9x
1781 csinhl                          NEW: ISO C 9x
1782 csinl                           NEW: ISO C 9x
1783 csqrt                           NEW: ISO C 9x
1784 csqrtf                          NEW: ISO C 9x
1785 csqrtl                          NEW: ISO C 9x
1786 ctan                            NEW: ISO C 9x
1787 ctanf                           NEW: ISO C 9x
1788 ctanh                           NEW: ISO C 9x
1789 ctanhf                          NEW: ISO C 9x
1790 ctanhl                          NEW: ISO C 9x
1791 ctanl                           NEW: ISO C 9x
1792 des_setparity                   NEW: Secure RPC
1793 ecb_crypt                       NEW: Secure RPC
1794 endutxent                       NEW: Unix98
1795 exp10                           NEW: ISO C 9x
1796 exp10f                          NEW: ISO C 9x
1797 exp10l                          NEW: ISO C 9x
1798 exp2                            NEW: ISO C 9x
1799 exp2f                           NEW: ISO C 9x
1800 exp2l                           NEW: ISO C 9x
1801 fattach                         NEW: STREAMS
1802 fdetach                         NEW: STREAMS
1803 fdim                            NEW: ISO C 9x
1804 fdimf                           NEW: ISO C 9x
1805 fdiml                           NEW: ISO C 9x
1806 feclearexcept                   NEW: ISO C 9x
1807 fegetenv                        NEW: ISO C 9x
1808 fegetexceptflag                 NEW: ISO C 9x
1809 fegetround                      NEW: ISO C 9x
1810 feholdexcept                    NEW: ISO C 9x
1811 feof_locked                     REMOVED
1812 feraiseexcept                   NEW: ISO C 9x
1813 ferror_locked                   REMOVED
1814 fesetenv                        NEW: ISO C 9x
1815 fesetexceptflag                 NEW: ISO C 9x
1816 fesetround                      NEW: ISO C 9x
1817 fetestexcept                    NEW: ISO C 9x
1818 feupdateenv                     NEW: ISO C 9x
1819 fflush_locked                   REMOVED
1820 ffsl                            NEW: GNU ext.
1821 ffsll                           NEW: GNU ext.
1822 fgetpos64                       NEW: LFS
1823 fgets_unlocked                  NEW: GNU ext.
1824 fileno_locked                   REMOVED
1825 fma                             NEW: ISO C 9x
1826 fmaf                            NEW: ISO C 9x
1827 fmal                            NEW: ISO C 9x
1828 fmax                            NEW: ISO C 9x
1829 fmaxf                           NEW: ISO C 9x
1830 fmaxl                           NEW: ISO C 9x
1831 fmin                            NEW: ISO C 9x
1832 fminf                           NEW: ISO C 9x
1833 fminl                           NEW: ISO C 9x
1834 fmtmsg                          NEW: Unix98
1835 fopen64                         NEW: LFS
1836 fputc_locked                    REMOVED
1837 fputs_unlocked                  NEW: GNU ext.
1838 fread_unlocked                  NEW: GNU ext.
1839 freopen64                       NEW: LFS
1840 fseeko                          NEW: Unix98
1841 fsetpos64                       NEW: LFS
1842 fstatfs64                       NEW: LFS
1843 fstatvfs                        NEW: Unix98
1844 fstatvfs64                      NEW: LFS
1845 ftello                          NEW: Unix98
1846 ftello64                        NEW: LFS
1847 ftruncate64                     NEW: LFS
1848 ftw64                           NEW: LFS
1849 fwrite_unlocked                 NEW: GNU ext.
1850 gai_strerror                    NEW: IPv6
1851 gamma_r                         REMOVED
1852 gammaf_r                        REMOVED
1853 gammal_r                        REMOVED
1854 getchar_locked                  REMOVED
1855 getdate                         NEW: Unix98
1856 getdate_err                     NEW: Unix98
1857 getdate_r                       NEW: GNU ext.
1858 getmsg                          NEW: STREAMS
1859 getnameinfo                     NEW: IPv6
1860 getnetname                      NEW: Secure RPC
1861 getpmsg                         NEW: STREAMS
1862 getpt                           NEW: Unix98 PTY
1863 getrlimit64                     NEW: LFS
1864 getutxent                       NEW: Unix98
1865 getutxid                        NEW: Unix98
1866 getutxline                      NEW: Unix98
1867 glob64                          NEW: GNU ext.
1868 globfree64                      NEW: GNU ext.
1869 gnu_get_libc_release            NEW: GNU ext.
1870 gnu_get_libc_version            NEW: GNU ext.
1871 grantpt                         NEW: Unix98 PTY
1872 host2netname                    NEW: Secure RPC
1873 iconv                           NEW: iconv
1874 iconv_close                     NEW: iconv
1875 iconv_open                      NEW: iconv
1876 if_freenameindex                NEW: IPv6
1877 if_indextoname                  NEW: IPv6
1878 if_nameindex                    NEW: IPv6
1879 if_nametoindex                  NEW: IPv6
1880 in6addr_any                     NEW: IPv6
1881 in6addr_loopback                NEW: IPv6
1882 inet6_isipv4mapped              NEW: IPv6
1883 isastream                       NEW: STREAMS
1884 iswblank                        NEW: GNU ext.
1885 key_decryptsession              NEW: Secure RPC
1886 key_decryptsession_pk           NEW: Secure RPC
1887 key_encryptsession              NEW: Secure RPC
1888 key_encryptsession_pk           NEW: Secure RPC
1889 key_gendes                      NEW: Secure RPC
1890 key_get_conv                    NEW: Secure RPC
1891 key_secretkey_is_set            NEW: Secure RPC
1892 key_setnet                      NEW: Secure RPC
1893 key_setsecret                   NEW: Secure RPC
1894 llrint                          NEW: ISO C 9x
1895 llrintf                         NEW: ISO C 9x
1896 llrintl                         NEW: ISO C 9x
1897 llround                         NEW: ISO C 9x
1898 llroundf                        NEW: ISO C 9x
1899 llroundl                        NEW: ISO C 9x
1900 log2                            NEW: ISO C 9x
1901 log2f                           NEW: ISO C 9x
1902 log2l                           NEW: ISO C 9x
1903 lrint                           NEW: ISO C 9x
1904 lrintf                          NEW: ISO C 9x
1905 lrintl                          NEW: ISO C 9x
1906 lround                          NEW: ISO C 9x
1907 lroundf                         NEW: ISO C 9x
1908 lroundl                         NEW: ISO C 9x
1909 lseek64                         NEW: LFS
1910 makecontext                     NEW: Unix98
1911 mempcpy                         NEW: GNU ext.
1912 mmap64                          NEW: LFS
1913 moncontrol                      REMOVED
1914 modify_ldt                      NEW: kernel
1915 nan                             NEW: ISO C 9x
1916 nanf                            NEW: ISO C 9x
1917 nanl                            NEW: ISO C 9x
1918 nearbyint                       NEW: ISO C 9x
1919 nearbyintf                      NEW: ISO C 9x
1920 nearbyintl                      NEW: ISO C 9x
1921 netname2host                    NEW: Secure RPC
1922 netname2user                    NEW: Secure RPC
1923 nexttoward                      NEW: ISO C 9x
1924 nexttowardf                     NEW: ISO C 9x
1925 nexttowardl                     NEW: ISO C 9x
1926 nftw                            NEW: Unix98
1927 nftw64                          NEW: LFS
1928 open64                          NEW: LFS
1929 passwd2des                      NEW: Secure RPC
1930 pow10                           NEW: GNU ext.
1931 pow10f                          NEW: GNU ext.
1932 pow10l                          NEW: GNU ext.
1933 pread                           NEW: Unix98
1934 pread64                         NEW: LFS
1935 printf_size                     NEW: GNU ext.
1936 printf_size_info                NEW: GNU ext.
1937 profil_counter                  REMOVED
1938 pthread_mutexattr_getkind_np    REPLACED
1939 pthread_mutexattr_setkind_np    REPLACED
1940 ptsname                         NEW: Unix98 PTY
1941 ptsname_r                       NEW: Unix98 PTY
1942 putc_locked                     REMOVED
1943 putchar_locked                  REMOVED
1944 putgrent                        NEW: GNU ext.
1945 putmsg                          NEW: STREAMS
1946 putpmsg                         NEW: STREAMS
1947 pututxline                      NEW: Unix98
1948 pwrite                          NEW: Unix98
1949 pwrite64                        NEW: LFS
1950 readdir64                       NEW: LFS
1951 readdir64_r                     NEW: LFS
1952 remquo                          NEW: ISO C 9x
1953 remquof                         NEW: ISO C 9x
1954 remquol                         NEW: ISO C 9x
1955 round                           NEW: ISO C 9x
1956 roundf                          NEW: ISO C 9x
1957 roundl                          NEW: ISO C 9x
1958 rtime                           NEW: GNU ext.
1959 scalbln                         NEW: ISO C 9x
1960 scalblnf                        NEW: ISO C 9x
1961 scalblnl                        NEW: ISO C 9x
1962 scandir64                       NEW: LFS
1963 sendfile                        NEW: kernel
1964 setcontext                      NEW: Unix98
1965 setrlimit64                     NEW: LFS
1966 setutxent                       NEW: Unix98
1967 sighold                         NEW: Unix98
1968 sigignore                       NEW: Unix98
1969 sigqueue                        NEW: POSIX.1b
1970 sigrelse                        NEW: Unix98
1971 sigset                          NEW: POSIX.1b
1972 sigtimedwait                    NEW: POSIX.1b
1973 sigwaitinfo                     NEW: POSIX.1b
1974 sincos                          NEW: GNU ext.
1975 sincosf                         NEW: GNU ext.
1976 sincosl                         NEW: GNU ext.
1977 statfs64                        NEW: LFS
1978 statvfs                         NEW: Unix98
1979 statvfs64                       NEW: LFS
1980 strcasestr                      NEW: GNU ext.
1981 strtoimax                       NEW: ISO C 9x
1982 strtoumax                       NEW: ISO C 9x
1983 strverscmp                      NEW: GNU ext.
1984 svcauthdes_stats                NEW: Secure RPC
1985 svcunix_create                  NEW: sunrpc etx
1986 svcunixfd_create                NEW: sunrpc ext
1987 swapcontext                     NEW: Unix98
1988 tcgetsid                        NEW: Unix98 PTY
1989 tdestroy                        NEW: GNU ext.
1990 tgamma                          NEW: ISO C 9x
1991 tgammaf                         NEW: ISO C 9x
1992 tgammal                         NEW: ISO C 9x
1993 tmpfile64                       NEW: LFS
1994 trunc                           NEW: ISO C 9x
1995 truncate64                      NEW: LFS
1996 truncf                          NEW: ISO C 9x
1997 truncl                          NEW: ISO C 9x
1998 umount2                         NEW: kernel
1999 unlockpt                        NEW: Unix98 PTY
2000 updwtmpx                        NEW: Unix98
2001 user2netname                    NEW: Secure RPC
2002 utmpxname                       NEW: Unix98
2003 versionsort                     NEW: GNU ext.
2004 versionsort64                   NEW: GNU ext.
2005 waitid                          NEW: Unix98
2006 wcscasecmp                      NEW: GNU ext.
2007 wcsncasecmp                     NEW: GNU ext.
2008 wcsnlen                         NEW: GNU ext.
2009 wcstoimax                       NEW: ISO C 9x
2010 wcstoll                         NEW: ISO C 9x
2011 wcstoull                        NEW: ISO C 9x
2012 wcstoumax                       NEW: ISO C 9x
2013 wcswcs                          NEW: Unix98
2014 wordexp                         NEW: POSIX.2
2015 wordfree                        NEW: POSIX.2
2016 write_profiling                 REMOVED
2017 xdecrypt                        NEW: Secure RPC
2018 xdr_authdes_cred                NEW: Secure RPC
2019 xdr_authdes_verf                NEW: Secure RPC
2020 xdr_cryptkeyarg                 NEW: Secure RPC
2021 xdr_cryptkeyarg2                NEW: Secure RPC
2022 xdr_cryptkeyres                 NEW: Secure RPC
2023 xdr_getcredres                  NEW: Secure RPC
2024 xdr_key_netstarg                NEW: Secure RPC
2025 xdr_key_netstres                NEW: Secure RPC
2026 xdr_keybuf                      NEW: Secure RPC
2027 xdr_keystatus                   NEW: Secure RPC
2028 xdr_netnamestr                  NEW: Secure RPC
2029 xdr_sizeof                      NEW: Secure RPC
2030 xdr_unixcred                    NEW: sunrpc ext
2031 xencrypt                        NEW: Secure RPC
2032 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2033 \f
2034 Version 2.0.6
2035
2036 * more bug fixes
2037
2038 \f
2039 Version 2.0.5
2040
2041 * more bug fixes
2042
2043 * inet_ntoa is thread-safe
2044
2045 * updwtmp is moved from libutil to libc
2046
2047 * rewrite of cbrt function
2048
2049 * update of timezone data
2050 \f
2051 Version 2.0.4
2052
2053 * more bug fixes
2054 \f
2055 Version 2.0.3
2056
2057 * more bug fixes
2058 \f
2059 Version 2.0.2
2060
2061 * more bug fixes
2062
2063 * add atoll function
2064
2065 * fix complex problems in Berkeley DB code
2066
2067 * fix math functions
2068 \f
2069 Version 2.0.1
2070
2071 * fixed lots of header problems (especially Linux/GNU specific)
2072
2073 * dynamic loader preserves all registers
2074
2075 * Roland McGrath provided support for handling of auxiliary objects in
2076   the ELF dynamic loader.
2077
2078 * support for parallel builds is improved
2079 \f
2080 Version 2.0
2081
2082 * GNU extensions are no longer declared by default.  To enable them you
2083   must define the macro `_GNU_SOURCE' in your program or compile with
2084   `-D_GNU_SOURCE'.
2085
2086 * The library has changed from using GNU ld symbol aliases to using weak
2087   symbols where available.  The ELF object file format supports weak
2088   symbols; GNU ld also supports weak symbols in the a.out format.  (There
2089   is also now support for other GNU ld extensions in ELF.  Use the
2090   `--with-elf' option to configure to indicate you have ELF, and
2091   `--with-gnu-ld' if using GNU ld.)  This change resulted in the deletion
2092   of many files which contained only symbol aliases, reducing the size of
2093   the source and the compiled library; many other files were renamed to
2094   less cryptic names previously occupied by the symbol alias files.
2095   There is a new header file <elf.h> for programs which operate on
2096   files in the ELF format.
2097
2098 * Converted to Autoconf version 2, so `configure' has more options.
2099   Run `configure --help' to see the details.
2100
2101 * The library can now be configured to build profiling, highly-optimized
2102   (but undebuggable), and/or shared libraries (ELF with GNU ld only).  The
2103   `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2104   `configure' enable building these extra libraries.  The shared library is
2105   built by default when using both ELF and GNU ld.  When shared libraries
2106   are enabled, the new library `-ldl' is available for arbitrary run-time
2107   loading of shared objects; its interface is defined in <dlfcn.h>.  The
2108   new header file <link.h> gives access to the internals of the run-time
2109   dynamic linker, `ld.so'.  The shell script `ldd' is similar to the
2110   application of same name on other systems and it provides information
2111   about dynamically linked binaries.
2112
2113 * The C library now provides the run-time support code for profiling
2114   executables compiled with `-pg'.  Programs can control the profiling code
2115   through the interface in <sys/gmon.h>.  The `gmon.out' files written by
2116   the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2117   the support for this file format was contributed by David Mosberger-Tang.
2118
2119 * The math code has been replaced with a math library based on fdlibm from
2120   Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2121   Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2122   functions.  The math functions now reside in a separate library,  so
2123   programs using them will need to use `-lm' their linking commands.
2124
2125 * John C. Bowman contributed optimized ix87 assembler inline functions.
2126
2127 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2128   mechanism similar to that found in Solaris 2.  This is now used for the
2129   group, passwd, hosts, networks, services, protocols, rpc, ethers,
2130   shadow, netgroup, publickey, and alias databases.  The `nsswitch.conf'
2131   file controls what services are used for each individual database.  This
2132   works by loading shared libraries with names specified in `nsswitch.conf',
2133   so service modules can be changed or added at any time without even
2134   relinking any program.  Currently there are the file, db, and NIS based
2135   NSS services available.
2136
2137 * The new functions `strtoq' and `strtouq' parse integer values from
2138   strings, like `strtol' and `strtoul', but they return `long long int' and
2139   `unsigned long long int' values, respectively (64-bit quantities).
2140
2141 * The new functions `strtof' and `strtold' parse floating-point values from
2142   strings, like `strtod', but they return `float' and `long double' values,
2143   respectively (on some machines `double' and `long double' are the same).
2144
2145 * Ulrich Drepper has contributed new implementations of the floating-point
2146   printing and reading code used in the `printf' family of functions and
2147   `strtod', `strtof', and `strtold'.  These new functions are perfectly
2148   accurate, and much faster than the old ones.
2149
2150 * The implementation of the POSIX locale model was completely rewritten by
2151   Ulrich Drepper.  This includes the new programs `localedef' and `locale'
2152   to compile the POSIX locale definition.
2153
2154 * The former dummy implementations of the strcoll and strxfrm function are
2155   now replaced by fully functional code contributed by Ulrich Drepper.  The
2156   collation information comes from the POSIX locale definitions.
2157
2158 * The new header <langinfo.h> defines an interface for accessing
2159   various locale-dependent data (using the locale chosen with `setlocale').
2160
2161 * Ulrich Drepper has contributed a new suite of functions for operation on
2162   wide-character and multibyte-character strings, in <wchar.h>;
2163   and classification and case conversion of wide characters, in <wctype.h>.
2164   These new functions are conforming to the ISO C, Amendement 1 specification.
2165
2166 * There is now a second implementation of the standard I/O library available.
2167   It comes from GNU libg++ as was written by Per Bothner, heavily modified
2168   by Hongjiu Lu and made thread safe by Ulrich Drepper.
2169
2170 * You can now use positional parameter specifications in format strings
2171   for the `printf' and `scanf' families of functions.  For example,
2172   `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2173   ``Number 6, Mr Jones''.  This is mainly useful when providing different
2174   format strings for different languages, whose grammars may dictate
2175   different orderings of the values being printed.  To support this
2176   feature, the interface for `register_printf_handler' has changed; see
2177   the header file <printf.h> for details.
2178
2179 * The `printf' and `scanf' families of functions now understand a new
2180   formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2181   to group numbers as indicated by the locale; for `scanf' and friends, this
2182   says to accept as valid only a number with all the proper grouping
2183   separators in the right places.  In the default "C" locale, numbers are
2184   not grouped; but locales for specific countries will define the usual
2185   conventions (i.e. separate thousands with `,' in the US locale).
2186
2187 * The pgrp functions have been regularized, slightly incompatibly but much
2188   less confusingly.  The core functions are now `getpgid' and `setpgid',
2189   which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2190   argument) and BSD `setpgrp' (identical to `setpgid') functions are
2191   provided for compatibility.  There is no longer an incompatible `getpgrp'
2192   with an argument declared under _BSD_SOURCE; no BSD code uses it.
2193
2194 * The new header file <fts.h> and suite of functions simplify programs that
2195   operate on directory trees.  This code comes from 4.4 BSD.
2196
2197 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2198   Parts of the code were heavily modified by Ulrich Drepper to fit in the
2199   NSS scheme used in glibc.
2200
2201 * There is a new malloc debugging hook `__memalign_hook'.
2202
2203 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2204   `unsigned int' in <sys/types.h>.  These are for compatibility only and
2205   their use is discouraged.
2206
2207 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2208   done differently, so that it works even without GNU ld.
2209
2210 * New function `euidaccess' checks allowed access to a file like `access',
2211   but using the effective IDs instead of the real IDs.
2212
2213 * The time zone data files have been updated for the latest and greatest
2214   local time conventions of the countries of the world.
2215
2216 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2217   see <dirent.h>.
2218
2219 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2220   for formatting floating-point numbers.  They are provided only for
2221   compatibility; new programs should use `sprintf' instead.  There are
2222   also equivalent function for the `long double' floating-point type and
2223   all functions also exist in a reentrant form.
2224
2225 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2226   functions for maintaining the login-record files (primarily of use to
2227   system programs such as `login'), and convenient functions for
2228   allocating and initializing a pseudo-terminal (pty) device.
2229
2230 * Ulrich Drepper has contributed new support for System V style
2231   shared memory and IPC on systems that support it.
2232
2233 * Ulrich Drepper has contributed several miscellaneous new functions found
2234   in System V: The `hsearch' family of functions provide an effective
2235   implementation of hash tables; `a64l' and `l64a' provide a very simple
2236   binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2237   number generator.
2238
2239 * Ulrich Drepper has contributed new reentrant counterparts for the
2240   `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2241
2242 * Ulrich Drepper has contributed new, highly-optimized versions of several
2243   string functions for the i486/Pentium family of processors.
2244
2245 * Ulrich Drepper has updated the Linux-specific code, based largely
2246   on work done in Hongjiu Lu's version of GNU libc for Linux.
2247   The GNU library now supports Linux versions 2.0.10 and later,
2248   using the ELF object file format (i[3456]86-*-linux).
2249
2250 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2251
2252 * David Mosberger-Tang and Richard Henderson have ported the C library
2253   to Linux/Alpha (alpha-*-linux).  Richard Henderson contributed the
2254   dynamic linking support for ELF/Alpha.
2255
2256 * Richard Henderson contributed several Alpha optimized assembler function
2257   for arithmetic and string handling.
2258
2259 * Ulrich Drepper has contributed a new set of message catalog functions to
2260   support multiple languages using the <libintl.h> interface, for use with
2261   his new package GNU gettext.  Translation volunteers have contributed
2262   catalogs of the library's messages in Spanish, German, and Korean.
2263
2264 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2265   program and the `catgets' function for reading the catalog files it
2266   creates.  (The <libintl.h> interface is preferred; we include the
2267   <nl_types.h> interface using `catgets' only for source compatibility with
2268   programs already written to use it.)
2269
2270 * New header file <values.h> gives SVID-compatible names for <limits.h>
2271   constants.
2272
2273 * Various new macros, declarations, and small header files for compatibility
2274   with 4.4 BSD.
2275
2276 * New function `group_member' is a convenient way to check if a process has
2277   a given effective group ID.
2278
2279 * When using GCC 2.7 and later, the socket functions are now declared in a
2280   special way so that passing an argument of type `struct sockaddr_in *',
2281   `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2282   `struct sockaddr *' type, does not generate a type-clash warning.
2283
2284 * New function `error' declared in header file <error.h> is a convenient
2285   function for printing error messages and optionally exiting; this is the
2286   canonical function used in GNU programs.  The new functions `err', `warn',
2287   and friends in header file <err.h> are the canonical 4.4 BSD interface for
2288   doing the same thing.
2289
2290 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2291   POSIX.2 `glob' function to do ~ and {...} expansion.
2292
2293 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2294   `clearenv' which is used in POSIX.9 is also available.
2295
2296 * New function `getsid' returns session ID number on systems that support it.
2297
2298 * We have incorporated the 4.4 BSD `db' library (version 1.85).  New header
2299   files <db.h> and <mpool.h> provide a rich set of functions for several
2300   types of simple databases stored in memory and in files, and <ndbm.h> is
2301   an old `ndbm'-compatible interface using the `db' functions.  Link with
2302   `-ldb' to get these functions.
2303
2304 * New macro `strdupa' copies a string like `strdup', but uses local stack
2305   space from `alloca' instead of dynamic heap space from `malloc'.
2306
2307 * New function `strnlen' is like `strlen' but searches only a given maximum
2308   number of characters for the null terminator.  `stpncpy', `strndup' and
2309   `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2310   function.
2311
2312 * New function `statfs' in header <sys/statfs.h>.
2313
2314 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2315   provide convenient functions for operating on blocks of null-terminated
2316   strings.
2317
2318 * A new suite of functions in <utmp.h> handle all the details of reading
2319   and writing the utmp file.
2320
2321 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2322   Thorsten Kukuk.
2323
2324 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2325   completely POSIX compliant and also implemented the extended functionality
2326   to handle alternate digit representation and alternate era date formats.
2327
2328 * Ulrich Drepper provided an implementation of the `strptime' function
2329   defined in XPG4.2 which transforms a string into a `struct tm' value.
2330
2331 * Paul Eggert provided the tzselect shell script as part of the timezone
2332   code.  The shell script makes it easy to select the correct timezone
2333   specification.
2334
2335 * The implementation of the malloc family of functions is completely replaced
2336   by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2337   The implementation uses the mmap function (if available) and it is
2338   optimized for the use in multi threaded programs.
2339
2340 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2341   functions.  This new functionality is usable by specifying a special
2342   salt string and it is compatible with implementation on *BSD systems.
2343
2344 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2345   `getsubopt' to handle second level command line options, `bsd_signal'
2346   to access BSD style `signal' functionality, the obsolete `regexp' style
2347   expression matcher.
2348
2349 * the `lchown' function is available on system which support this
2350   functionality.
2351
2352 * The implementation of the shadow password handling function was contributed
2353   by Ulrich Drepper.
2354
2355 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2356
2357 * POSIX.1g support was added.  The <sys/select.h> header is available,
2358   `isfdtype' and `pselect' are implemented.  Craig Metz contributed an
2359   implementation of `getaddrinfo'.
2360 \f
2361 Version 1.09
2362
2363 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2364
2365 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2366   friends, for parsing /etc/fstab.  This code comes from 4.4 BSD.
2367
2368 * The new function `daemon' from 4.4 BSD is useful for server programs that
2369   want to put themselves in the background.
2370
2371 * Joel Sherrill has contributed support for several standalone boards that
2372   run without an operating system.
2373
2374 * `printf', `scanf' and friends now accept a `q' type modifier for long
2375   long int as well as `ll'.  Formats using these might be `%qu' or `%lld'.
2376
2377 * All of the code taken from BSD (notably most of the math and networking
2378   routines) has been updated from the BSD 4.4-Lite release.
2379
2380 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2381
2382 * The new functions `getdomainname' and `setdomainname' fetch or change the
2383   YP/NIS domain name.  These are system calls which exist on systems which
2384   have YP (aka NIS).
2385
2386 * The time zone data files have been updated for the latest international
2387   conventions.
2388
2389 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2390   $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2391 \f
2392 Version 1.08
2393
2394 * The C library now includes support for Sun RPC, from Sun's free
2395   RPCSRC-4.0 distribution.  The `portmap', `rpcinfo', and `rpcgen' programs
2396   are included.  (There is still no support for YP.)
2397
2398 * Tom Quinn has contributed a port of the C library to SGI machines running
2399   Irix 4 (mips-sgi-irix4).
2400
2401 * The new `lockf' function is a simplified interface to the locking
2402   facilities of `fcntl', included for compatibility.
2403
2404 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2405
2406 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2407
2408 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2409   compatibility.
2410
2411 * The error message printed by `assert' for a failed assertion now includes
2412   the name of the program (if using GNU ld) and the name of the calling
2413   function (with versions of GCC that support this).
2414
2415 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2416
2417 * The library now includes the <sys/mman.h> header file and memory
2418   management functions `mmap', `munmap', `mprotect', `msync', and
2419   `madvise', on systems that support those facilities.
2420
2421 * The interface for `mcheck' has changed slightly: the function called to
2422   abort the program when an allocation inconsistency is detected now takes
2423   an argument that indicates the type of failure.  The new function
2424   `mprobe' lets you request a consistency check for a particular block at
2425   any time (checks are normally done only when you call `free' or `realloc'
2426   on a block).
2427
2428 * It is now possible to easily cross-compile the C library, building on one
2429   system a library to run on another machine and/or operating system.  All
2430   you need to do is set the variable `HOST_CC' in `configparms' to the
2431   native compiler for programs to run on the machine you are building on (a
2432   few generator programs are used on Unix systems); set `CC' to the
2433   cross-compiler.
2434
2435 * The new function `fexecve' (only implemented on the GNU system) executes
2436   a program file given a file descriptor already open on the file.
2437 \f
2438 Version 1.07
2439
2440 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2441   running OSF/1 (alpha-dec-osf1).  He says it is 75% complete.
2442
2443 * You can set the variable `libprefix' in `configparms' to specify a prefix
2444   to be prepended to installed library files; this makes it easy to install
2445   the GNU C library to be linked as `-lgnuc' or whatever.
2446
2447 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2448   copies a limited number of characters from a string, and returns the
2449   address of the last character written.
2450
2451 * You no longer need to check for whether the installed `stddef.h' is
2452   compatible with the GNU C library.  configure now checks for you.
2453
2454 * You can now define a per-stream `fileno' function to convert the
2455   stream's cookie into an integral file descriptor.
2456
2457 * ``malloc (0)'' no longer returns a null pointer.  Instead, it
2458   allocates zero bytes of storage, and returns a unique pointer which
2459   you can pass to `realloc' or `free'.  The behavior is undefined if
2460   you dereference this pointer.
2461
2462 * The C library now runs on Sony NEWS m68k machines running either
2463   NewsOS 3 or NewsOS 4.
2464
2465 * The new `syscall' function is a system-dependent primitive function
2466   for invoking system calls.  It has the canonical behavior on Unix
2467   systems, including unreliable return values for some calls (such as
2468   `pipe', `fork' and `getppid').
2469
2470 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2471   to `EAGAIN', which is the preferred name.  On systems whose kernels
2472   use two distinct codes, the C library now translates EWOULDBLOCK to
2473   EAGAIN in every system call function.
2474 \f
2475 Version 1.06
2476
2477 * The GNU C Library Reference Manual is now distributed with the library.
2478   `make dvi' will produce a DVI file of the printed manual.
2479   `make info' will produce Info files that you can read on line using C-h i
2480   in Emacs or the `info' program.
2481   Please send comments on the manual to bug-glibc-manual@gnu.org.
2482
2483 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2484
2485 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2486
2487 * Jason Merrill has contributed a port to the Sequent Symmetry running
2488   Dynix version 3 (i386-sequent-dynix).
2489
2490 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2491   ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2492
2493 * New function `memory_warnings' lets you arrange to get warnings when
2494   malloc is running out of memory to allocate, like Emacs gives you.
2495
2496 * The C library now contains the relocating allocator used in Emacs 19 for
2497   its editing buffers.  This allocator (ralloc) minimizes allocation
2498   overhead and fragmentation by moving allocated regions around whenever it
2499   needs to.  You always refer to a ralloc'd region with a "handle" (a
2500   pointer to a pointer--an object of type `void **').
2501
2502 * There is a new `printf' format: `%m' gives you the string corresponding
2503   to the error code in `errno'.
2504
2505 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2506   or `%[' conversion, but instead of filling in a fixed-sized buffer you
2507   pass, the `a' modifier says to fill in a `char **' you pass with a
2508   malloc'd string.
2509
2510 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2511   `FNM_CASEFOLD'.  `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2512   name like `foo/bar'.  `FNM_CASEFOLD' says to ignore case in matching.
2513
2514 * `mkstemp' is a traditional Unix function to atomically create and open a
2515   uniquely-named temporary file.
2516 \f
2517 Version 1.05
2518
2519 * The standard location for the file that says what the local timezone is
2520   has changed again.  It is now `/usr/local/etc/localtime' (or more
2521   precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2522
2523 * The distribution no longer contains any files with names longer than 14
2524   characters.
2525
2526 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2527   These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2528
2529 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2530 \f
2531 Version 1.04
2532
2533 * The configuration process has changed quite a bit.  The `configure'
2534   script is now used just like the configuration scripts for other GNU
2535   packages.  The `sysdeps' directory hierarchy is much rearranged.
2536   The file `INSTALL' explains the new scheme in detail.
2537
2538 * The header files no longer need to be processed into ANSI C and
2539   traditional C versions.  There is just one set of files to install, and
2540   it will work with ANSI or old C compilers (including `gcc -traditional').
2541
2542 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2543   MIPS DECStation running Ultrix 4.
2544
2545 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2546   Tom Quinn contributed the initial code.  The GNU C library can NOT yet be
2547   made itself into a shared library.
2548
2549 * Yet further improved support for the i386, running 4.3 BSD-like systems
2550   (such as Mach 3 with the Unix single-server), or System V.
2551
2552 * New function `strncasecmp' to do case-insensitive string comparison
2553   with limited length.
2554
2555 * New function `strsep' is a reentrant alternative to `strtok'.
2556
2557 * New functions `scandir' and `alphasort' for searching directories.
2558
2559 * New function `setenv' is a better interface to `putenv'.
2560
2561 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2562   function for traversing a directory tree.
2563
2564 * The GNU obstack package is now also part of the C library.
2565   The new function `open_obstack_stream' creates a stdio stream that
2566   writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2567   formatted output directly to an obstack.
2568
2569 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2570   cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2571
2572 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2573
2574 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2575   things to your strings.
2576
2577 * There are some new test programs: test-fseek, testmb, and testrand.
2578
2579 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2580   These ports are not finished, but are a good starting place for really
2581   supporting those systems.
2582
2583 * `/etc/localtime' is now the standard location for the file that says what
2584   the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2585   This follows the general principle that `/etc' is the place for all local
2586   configuration files.
2587
2588 * The C library header files now use `extern "C"' when used by the C++
2589   compiler, so the C library should now work with C++ code.
2590
2591 * The header file <bstring.h> is gone.  <string.h> now declares bcopy,
2592   bcmp, bzero, and ffs.  (Update: nowadays these functions are declared
2593   in <strings.h>.)
2594
2595 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2596   function which uses the `merge sort' algorithm, and is said to be
2597   significantly faster than the old GNU `qsort' function.  Merge sort is
2598   now the standard `qsort' function.  The new algorithm can require a lot
2599   of temporary storage; so, the old sorting function is called when the
2600   required storage is not available.
2601
2602 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2603   provides the Unix `crypt' function, plus some other entry points.
2604
2605 * The code and header files taken from 4.4 BSD have been updated with the
2606   latest files released from Berkeley.
2607 \f
2608 ----------------------------------------------------------------------
2609 Copyright information:
2610
2611 Copyright (C) 1992-2015 Free Software Foundation, Inc.
2612
2613    Permission is granted to anyone to make or distribute verbatim copies
2614    of this document as received, in any medium, provided that the
2615    copyright notice and this permission notice are preserved,
2616    thus giving the recipient permission to redistribute in turn.
2617
2618    Permission is granted to distribute modified versions
2619    of this document, or of portions of it,
2620    under the above conditions, provided also that they
2621    carry prominent notices stating who last changed them.
2622 \f
2623 Local variables:
2624 version-control: never
2625 fill-column: 76
2626 End: