1 GNU C Library NEWS -- history of user-visible changes. 2011-1-13
2 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 3268, 7066, 10085, 10484, 10851, 11149, 11155, 11611, 11640, 11655, 11701,
13 11840, 11856, 11883, 11903, 11904, 11968, 11979, 12005, 12037,
14 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113, 12140,
15 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348, 12394
17 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
19 * POWER7 optimizations: memset, memcmp, strncmp
21 * New optimized string functions for x86-64: strnlen (SSE2),
22 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
23 Implemented by Ulrich Drepper.
27 * The following bugs are resolved with this release:
29 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
30 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
31 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
32 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
33 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
34 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
35 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
36 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
38 * New interfaces: pthread_getname_np, pthread_setname_np
40 * New Linux interface: recvmmsg
42 * STT_GNU_IFUNC implemented for Sparc by David Miller.
44 * The dynamic linker now recognizes supported ABI versions from the
45 EI_ABIVERSION field in the ELF header.
46 Implemented by Ulrich Drepper.
48 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
49 will not be used to fill in password fields in the passwd.byname replies.
50 Instead it is used to synthesize the shadow.byname table, should it be
51 missing. This is a useful mode in some installations involving Solaris.
52 Implemented by Ulrich Drepper.
54 * New locales: kok_IN, sq_MK, cv_RU
58 * The following bugs are resolved with this release:
60 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
61 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
62 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
63 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
64 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
65 10789, 10817, 10823, 10840, 10847
67 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
69 Implemented by Ulrich Drepper.
71 * Checking version of longjmp added that fails if an uninitialized stack
72 frame would be created. Implemented by Ulrich Drepper.
74 * STT_GNU_IFUNC is now supported in static executables.
75 Implemented by H.J. Lu.
77 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
79 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
80 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
81 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
82 Contributed by H.J. Lu.
84 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
85 Implemented by Ulrich Drepper.
87 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
89 Contributed by H.J. Lu.
91 * Support for fma instruction in AVX on x86-64.
92 Implemented by H.J. Lu and Ulrich Drepper.
94 * AVX support in x86-64 auditing support in ld.so.
95 Implemented by H.J. Lu.
97 * STB_GNU_UNIQUE support added.
98 Implemented by Ulrich Drepper.
100 * Implement second fallback mode for optimized DNS lookup for even more
101 broken environments. If two requests from the same port are not
102 handled correctly close the socket and open a new one before sending
103 the second request. The 'single-request-reopen' option in /etc/resolv.conf
104 can be used to select this mode right away, instead of rediscovering the
105 necessity is every process again.
106 Implemented by Ulrich Drepper.
108 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
109 Implemented by Adam Tkac.
111 * Optimized iconv conversions for S390x.
112 Implemented by Andreas Krebbel.
114 * Using condvars with PI mutexes is now more efficient due to kernel
115 support for requeueing to PI futexes. NPTL support added for x86-64.
116 Implemented by Ulrich Drepper.
118 * New locales: ps_AF, my_MM
122 * The following bugs are resolved with this release:
124 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
125 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
126 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
127 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
128 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
130 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
131 Implemented by Ulrich Drepper.
133 * New Linux interfaces: accept4, fallocate, fallocate64.
134 Implemented by Ulrich Drepper.
136 * Correct declarations of string function when used in C++ code. This
137 could lead to compile errors for invalid C++ code.
139 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
142 * New POSIX 2008 interface: psiginfo
143 Implemented by Ulrich Drepper.
145 * New ISO C++1x interfaces: quick_exit, at_quick_exit
146 Implemented by Ulrich Drepper.
148 * Support for selecting between multiple function definitions at runtime
149 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
151 * The libcrypt library can now use the hash function implementations in
152 NSS. Implemented by Ulrich Drepper.
154 * The malloc implementation can be compiled to be less memory efficient
155 but higher performing in multi-threaded programs.
156 Implemented by Ulrich Drepper.
158 * New locales: nan_TW@latin, ks_IN
160 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
161 Implemented by Ulrich Drepper.
163 * Extended printf hook support. It is possible to use user-defined types
164 and extend existing format specifiers.
165 Implemented by Ulrich Drepper.
167 * Handling for group shadow files has been added.
168 Implemented by Ulrich Drepper.
170 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
171 servers (the case, e.g., for some people using the built-in DNS
172 server in ADSL modems/routers). There is a once-per-process timeout
173 in case of a broken server. To avoid it, users can run nscd or put
174 'options single-request' in /etc/resolv.conf.
175 Implemented by Ulrich Drepper.
179 * The following bugs are resolved with this release:
181 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
182 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
183 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
184 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
185 6968, 6974, 6980, 6995, 7008, 7009, 7029
187 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
188 up at the same time. Implemented by Ulrich Drepper.
190 * TLS descriptors for LD and GD on x86 and x86-64.
191 Implemented by Alexandre Oliva.
193 * getaddrinfo now handles DCCP and UDPlite.
194 Implemented by Ulrich Drepper.
196 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
197 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
198 Implemented by Ulrich Drepper.
200 * New implementation of memmem, strstr, and strcasestr which is O(n).
201 Implemented by Eric Blake.
203 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
205 * Implement "e" option for popen to open file descriptor with the
206 close-on-exec flag set. Implemented by Ulrich Drepper.
208 * Implement "b" mode for fmemopen. In this mode writes writes don't
209 implicitly add a NUL byte and seeks from the end of the buffer really
210 use the buffer end, not the string length as the basis.
211 Implemented by Ulrich Drepper.
213 * Many functions, exported and internal, now atomically set the close-on-exec
214 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
216 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
218 Implemented by Pravin Satpute.
220 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
224 * The following bugs are resolved with this release:
226 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
227 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
228 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
229 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
230 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
231 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
232 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
234 * New locales: bo_CN, bo_IN, shs_CA.
236 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
238 * Sorting rules for some Indian languages (Devanagari and Gujarati).
239 Implemented by Pravin Satpute.
241 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
243 * nscd caches now all timeouts for DNS entries
244 Implemented by Ulrich Drepper.
246 * nscd is more efficient and wakes up less often.
247 Implemented by Ulrich Drepper.
249 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
250 vdprintf, and obstack_vprintf.
251 Implemented by Jakub Jelinek.
253 * Faster memset for x86-64.
254 Implemented by Harsha Jagasia and H.J. Lu.
256 * Faster memcpy on x86.
257 Implemented by Ulrich Drepper.
259 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
260 Implemented by Ulrich Drepper.
262 * Faster sqrt and sqrtf implemention for some PPC variants.
263 Implemented by Stephen Munroe.
267 * The following bugs are resolved with this release:
269 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
270 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
271 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
272 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
273 5071, 5103, 5104, 5112, 5113, 5184, 5186
275 * More checking functions: fread, fread_unlocked, open*, mq_open.
276 Implemented by Jakub Jelinek and Ulrich Drepper.
278 * Extend fortification to C++. Implemented by Jakub Jelinek.
280 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
281 by not recognizing 'a' as a modifier when those specs are requested.
282 Implemented by Jakub Jelinek.
284 * PPC optimizations to math and string functions.
285 Implemented by Steven Munroe.
287 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
288 options to be passed. Implemented by Ulrich Drepper.
290 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
292 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
293 Implemented by Ulrich Drepper.
295 * Handle private futexes in the NPTL implementation.
296 Implemented by Jakub Jelinek and Ulrich Drepper.
298 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
299 Implemented by Roland McGrath and Ulrich Drepper.
301 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
303 * SHA-256 and SHA-512 based password encryption.
304 Implemented by Ulrich Drepper.
306 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
307 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
310 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
311 Implemented by Ulrich Drepper.
315 * The following bugs are resolved with this release:
317 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
318 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
319 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
320 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
321 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
322 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
323 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
326 * New Linux interfaces: epoll_pwait, sched_getcpu.
328 * New generic interfaces: strerror_l.
330 * nscd can now cache the services database. Implemented by Ulrich Drepper.
334 * The following bugs are resolved with this release:
336 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
337 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
338 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
339 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
340 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
341 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
342 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
343 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
344 3225, 3251, 3252, 3253, 3273
346 * For Linux, the sorting of addresses returned by getaddrinfo now also
347 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
348 Implemented by Ulrich Drepper.
350 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
351 Implemented by Ulrich Drepper.
353 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
355 * New iconv module for MIK. Contributed by Alexander Shopov.
357 * For sites with broken group and/or passwd database, the auto-propagate
358 option of nscd can prevent creating ID lookup entries from the results
359 of a name lookup and vice versa. This usually is no problem but some
360 site might have problems with the default behavior.
361 Implemented by Ulrich Drepper.
363 * Iterating over entire database in NIS can be slow. With the
364 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
365 to trade time for memory. The entire database will be read at once.
366 Implemented by Ulrich Drepper.
368 * The interfaces introduced in RFC 3542 have been implemented by
371 * Support for the new ELF hash table format was added by Ulrich Drepper.
373 * Support for priority inheritance mutexes added by Jakub Jelinek and
376 * Support for priority protected mutexes added by Jakub Jelinek.
378 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
379 or_IN, csb_PL, fy_NL, sr_ME.
383 * More overflow detection functions.
385 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
386 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
388 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
389 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
390 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
391 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
392 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
393 by Masahide Washizawa.
395 * It is now possible to install audit libraries for the dynamic linker using
396 LD_AUDIT. Implemented by Ulrich Drepper.
398 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
399 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
400 For a libc and libpthread that works well on Linux 2.4 kernels, we
401 recommend using the stable 2.3 branch.
403 * The new function open_wmemstream acts like open_memstream,
404 but uses a wchar_t wide character buffer.
406 * The new function ppoll is an improved version of poll, similar to pselect.
408 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
409 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
410 renameat, unlinkat, linkat, symlinkat, readlinkat.
412 * New Linux kernel system calls: unshare,
413 inotify_init, inotify_add_watch, inotify_rm_watch.
415 * The euidaccess function is now also known by the alias eaccess,
416 for compatibility with some other systems.
418 * Timezone data updated to 2006b version.
422 * The following bugs are resolved with this release:
424 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
425 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
426 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
427 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
428 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
429 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
431 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
433 * As of this release, GCC 4 can be used to compile the C Library.
435 * Timezone data updated to 2005m version.
439 * The following bugs are resolved with this release:
441 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
442 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
443 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
444 777, 787, 821, 822, 823, 825
446 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
450 * Support for RFC 3678. Real implementations exist only for Linux so far.
451 Implemented by Ulrich Drepper.
453 * nscd can now cache entries persistently. Expiring entries are reloaded.
454 For speedups the cache can be shared in memory with client processes.
455 Implemented by Ulrich Drepper.
457 * nscd can now perform SELinux checks.
458 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
460 * getaddrinfo queries are now cached. Canonical name lookup is performed
462 Implemented by Ulrich Drepper.
464 * The nothrow function attribute is used when headers are used by gcc when
465 compiling C code. This can avoid significant amounts of exception
468 * The malloc functions perform more error checking and are stricter when
469 it comes to reacting on errors. The default action is to terminate
470 the process after showing an error message. Implemented by Ulrich Drepper.
472 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
473 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
475 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
476 namespaces using the new function dlmopen(). This feature is of course,
477 like most other dynamic loading functionality, not available in statically
478 linked applications. Implemented by Ulrich Drepper.
480 * Low-overhead boundary checking variants of string and some stdio functions
481 were added. These are to be used in conjunction with a gcc patch by
482 Jakub Jelinek which adds calls to these functions if possible.
483 Implemented by Jakub Jelinek and Ulrich Drepper.
485 * Old code for several operating systems and machine architectures that
486 have not been in working condition in a long time have been removed from
487 the main source tree maintained by the GNU C Library's maintainers.
488 These files are now reside in the separate `ports' source module
489 that is usable as an add-on when building the library.
493 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
494 interrogate the dynamic linker, compatible with the Solaris interface.
496 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
497 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
499 * getifaddrs now uses the netlink interface on Linux to get its information.
500 Implemented by Thorsten Kukuk.
502 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
503 Implemented by Ulrich Drepper.
505 * support for non-executable stacks on x86 has been added. Changes mostly
508 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
511 * getaddrinfo now performs destination address selection according to
516 * Thread-safe interfaces for many functions that access locale data
517 were added in version 2.3, but these features were omitted from NEWS.
518 Many functions have variants with an `_l' suffix that take a `locale_t'
519 object as a parameter rather than consulting the current locale.
520 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
521 create and maintain `locale_t' objects. Additionally, the new function
522 `uselocale' sets "the current locale" (as used by functions not so
523 parameterized) set for an individual thread. These features were added
524 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
526 * The functions getresuid, getresgid, setresuid, and setresgid, which
527 have long been available on Linux, are now declared in <unistd.h>
528 and are now also available on the Hurd.
530 * ELF thread-local storage support (TLS) now works on x86-64.
532 * The new dynamic string token $LIB is expanded in shared library names.
533 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
535 * Aldy Hernandez contributed complete software floating point support for
536 PowerPC machines with no FPU.
538 * fexecve is implemented on Linux.
540 * The `btowc' function should work at least twice as fast due to
541 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
543 * With approriate thread add-ons cancelable functions are now implemented
544 in libc.so as well. No need to call the function in libpthread. This
545 change allowed to finally disable the incorrect and expensive handling
546 of weak definition in ld.so.
548 * Yet more PLT entries in libc.so have been removed. We finally arrived
549 at the bare minimum. Startup times improved appropriately.
551 * Support for the new Linux/x86 system call interface was added. The
552 AT_SYSINFO auxiliary vector entry is recognized and handled.
556 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
559 * iconv (the program and the interface) now accepts empty names (excluding
560 options like //TRANSLIT) to mean "use charset of current locale".
562 * localedef can now transliterate characters in strings which are not in
563 the provided charmap. The information from the input locale is used.
565 * Prelinking support was added for ELF targets. This requires additional
566 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
568 * Read-only stdio streams now use mmap to speed up operation by eliminating
569 copying and buffer underflows. To use add 'm' to the mode string of
570 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
572 * The malloc functions were completely rewritten by Wolfram Gloger based
573 on Doug Lea's malloc-2.7.0.c.
575 * Isamu Hasegawa contributed a completely new and POSIX-conformant
576 implementation of regex.
578 * Bruno Haible upgraded the iconv and locale implementation to support
581 * Contents of the LC_* and LANG environment variables in the CEN style are
582 not recognized anymore. It never was used. Change by Ulrich Drepper.
584 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
585 thread-local storage (TLS) ABI on some platforms.
586 Changes by Ulrich Drepper. SH support by Kaz Kojima.
588 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
589 EUC-JISX0213, and TSCII.
591 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
592 BSD-compatible interface for getting all network interface addresses.
593 Implementation for IPv4 by Roland McGrath.
595 * Loading of locale data is faster due to the introduction of a locale
596 archive. Implemented by Roland McGrath and Ulrich Drepper.
598 * Startup times are significantly reduced by not using exported functions
599 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
602 * Steven Munroe contributed a port to PowerPC64/Linux.
606 * The Hurd now uses the GNU libio implementation of stdio rather than the
607 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
609 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
610 with the same behavior as the Linux system call of the same name.
614 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
615 128-bit long double format.
617 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
618 IBM1161, and IBM1162 charsets.
620 * Andreas Jaeger contributed a port to x86-64/Linux.
622 * Peter Bruin contributed a port to PowerPC/Hurd.
624 * libc functions using I/O streams now can handle wide-oriented streams
627 * optimizations in the dynamic linker. Binaries created by recent binutils
628 versions start up quicker due to reduced time spent on relocations.
630 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
634 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
635 asinh, atanh, j0 for the 128-bit long double format.
637 * Bruno Haible updated all the code handling Unicode in some form to
640 * Speed of regex for single-byte locales is back to previous levels.
641 Patch by Isamu Hasegawa.
643 * Alpha, SPARC, and IA-64 now also using floating stacks.
645 * Startup time of internationalized applications greatly improved through
646 iconv cache. Use iconvconfig to generate the cache file.
647 Contributed by Ulrich Drepper.
649 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
650 severe performance problems. Patch by David Mosberger.
652 * The Hurd port got a lot more functionality like AIO, various stdio
653 extensions, etc. Mainly done by Roland McGrath.
655 * mtrace can now lookup symbols in shared libraries.
659 * Intel's IA-64 math library is largely integrated. It provides fast and
660 accurate implementatations for most basic and standard math functions
661 in float, double, and long double format.
663 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
664 and asin for the 96-bit long double format and asin, log, tan for the
665 128-bit long double format.
667 * The beginning of a last-bit accurate math library by IBM Haifa were added.
668 The basic double functions exist today. Contributed by Abraham Ziv
669 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
670 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
672 * An asynchronous name lookup library was added. The interface is designed
673 after POSIX AIO. The proposal was circulated beforehand to get comments.
674 No negative ones came in. Implemented by Ulrich Drepper.
676 * Port to S390/64bit contributed by Martin Schwidefsky
677 <schwidefsky@de.ibm.com>.
679 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
680 of functions for Linux/IA-64.
682 * The RPC code is now thread safe. Threads can now use the same service
683 of different services at the same time. Patch by Eric Norum
684 <eric.norum@usask.ca> with some help by Ulrich Drepper.
686 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
687 family of functions for Linux/S390.
689 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
690 of functions for Linux/x86.
692 * Port to Linux/CRIS contributed by Axis Communications.
696 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
697 we can now check for namespace violations and missing declarations. The
698 result is that almost all headers are now Unix-compliant (as defined in
699 the upcoming XPG6). The negative side is that some programs might need
700 corrections, too, if they depend on the incorrect form of the headers in
701 previous versions which defined too many symbols and included too many
704 * regex now handles multibyte character sets correctly.
705 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
707 * iconv (the program) does now conform to the upcoming XPG6 and handles
708 charmaps. Instead of the charset names the path of charmaps can be
709 provided and the conversion happens based on this data.
710 Contributed by Ulrich Drepper.
712 * The locale program now provides detailed information about the installed
717 only lists the names of the supported locales
721 provides details such as country, language, and codeset name.
722 Contributed by Ulrich Drepper.
726 * The gencat program now parses the input file according to the charset
727 selected by the LC_CTYPE category. This is important for stateful
728 character sets. To make generating catalogs easier there is a way
729 to overwrite the charset selected by the locale: before the first
730 message or $ quote line the catalog can contain a line like
734 to select the charset (ISO-8859-2 in this case).
736 Implemented by Shinya Hanataka and Ulrich Drepper.
738 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
739 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
740 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
742 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
743 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
745 * The LANGUAGE environment variable is now ignored unless the locale is
746 changed from the default "C" locale.
748 * The usual bug fixes.
752 * Greg McGary added runtime support for bounds checking using gcc's
753 new -fbounded-pointers option. ix86 target is complete. PowerPC
756 * Thorsten Kukuk added secure mode support to nscd.
758 * The Berkeley db libraries have been removed.
760 Related, the nss_db module is now in a separate package since it
761 obviously requires a database library being available.
763 * Wide character I/O streams implemented by Ulrich Drepper.
765 * Functions from the extended socket API added by Ulrich Drepper.
767 * Functions feenableexcept and fedisableexcept to control the
768 behaviour of individual exceptions have been added by Andreas Jaeger.
770 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
772 * The resolver code has been updated from bind 8.2.3-T5B which supports
773 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
776 This change could in some situations effect backward compatibility. Since
777 now `_res' is a thread-local instead of a global variable, modifying it
778 in one thread does not have any effect in other threads.
780 The resolver library was also extended to allow IPv6 as the transport
781 protocol for the requests. This work was done by Stig Venaas.
783 * Compatibility code for K&R C compilers has been removed from the
784 header files. A ISO C compiler is needed to use the library
785 (conforming to either C89 or C99 standard).
787 * Complete rewrite of the localedef program to support multibyte character
788 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
789 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
790 Implemented by Ulrich Drepper.
792 Bruno Haible significantly improved the generation and use of the data
793 structures for the wide character tables.
795 * Plural handling in gettext implemented by Ulrich Drepper.
797 * The utmp daemon has been removed.
799 * The port to MIPS-Linux has been finished by Andreas Jaeger.
801 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
804 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
806 * POSIX barriers implemented by Kaz Kylheku.
808 * POSIX spawn function family implemented by Ulrich Drepper.
810 * POSIX spinlocks are now available.
812 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
814 * the configure option --enable-kernel=X.Y.Z allows to strip out
815 compatibility for kernel versions before X.Y.Z. This is currently only
816 implemented for Linux.
818 * the sockaddr_in6 structure changed. The IPv6 working group added a new
819 field sin6_scope_id. This means that all programs using IPv6 should be
820 recompiled. Don't expect binary compatibility with previous glibc
823 * various conversion modules for IBM character sets contributed by
826 * IA-64 port by Jes Sorensen and HJ Lu.
828 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
829 Compiling the GNU C Library for Linux/ia64
830 ******************************************
832 Please refer to the file INSTALL in the same directory as you found
833 this file for general information about configuring and compiling
836 For general inquiries about glibc under Linux/ia64 please use the
837 following mailing list linux-ia64@linuxia64.org or one of the relevant
840 Recommended Tools for Compilation
841 =================================
843 In order for glibc-2.2 to build correctly on the ia64 you need at
844 least the following versions of the GNU tools (the :
846 * The Cygnus toolchain snapshot for the ia64 as of August 4
847 including the provided set of patches. It is however recommend
848 you use the October 24 toolchain snapshot or a more recent version.
850 OR alternatively you can try the following (the Cygnus toolchain is
851 the recommended solution):
853 * GCC and binutils, GAS and GNU LD out of CVS from
854 sources.redhat.com as of August 28, 2000 or later. The CVS tree
855 may require special patches to work properly on the ia64.
857 Configuring and compiling GNU Libc for Linux/ia64
858 =================================================
860 The library requires Linux kernel version 2.4.0-test4-000728 or
861 later to funtion properly. Besides that it support for debug libraries
862 is currently untested. Hence the following options
863 are required for configuring the library:
865 --disable-debug --enable-kernel=2.4.0
867 It is also important that you make sure the library picks up the
868 appropriate kernel header files, if you do not have recent enough
869 kernel headers in /usr/src/linux/include, you should use the
870 --with-headers=<path> option to specify the location.
872 As an example I personally use the following options to configure
877 --enable-kernel=2.4.0
881 --with-headers=/home/jes/linux/include
886 Jes Sorensen <jes@linuxcare.com>,
888 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
902 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
904 * New xdr functions are added; some rpc functions are now 64bit clean.
906 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
908 * Fixed known incompatibilities with glibc 2.0.
910 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
912 * Optimized a number of functions (especially the ELF dynamic loader).
914 * Update timezone data files.
916 * lots of charmaps corrections
918 * some new locale definitions and charmaps
923 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
924 conform to POSIX member type requirements. Symbol versions have been
925 adjusted as needed within the library, and for direct use by applications,
926 but there is potential for problems if third-party libraries use
927 struct timeval as part of their interface. This does not present
928 a problem for X and other "essential" system libraries.
930 * An additional locale model to support C++ Standard Library locale
931 model and probably more was implemented by Ulrich Drepper.
933 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
936 * Miles Bader provided the `argp' function family to support hierachical
937 command line argument parsing, layered on top of getopt.
939 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
941 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
944 * scanf recognizes the %a and %A format for scanning floating point numbers.
946 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
947 information and interfaces for the available integer types.
949 * about 130 new math functions were added to implement the ISO C9x math
952 * the new header <complex.h> contains definitions of the complex math
953 functions from ISO C 9X.
955 * the new header <tgmath.h> defines generic macros to use complex or
956 real valued functions.
958 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
960 * Andreas Jaeger provided a test suite for the math library.
962 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
964 * Ulrich Drepper added character set conversion functions (iconv).
966 * Optimized string functions have been added.
968 * The localedata addon is now part of glibc.
970 * An implementation of profiling shared libraries was added by Ulrich Drepper.
972 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
973 daemon for NSS (nscd).
975 Missing a better place here are some numbers on improvements. Under
976 Linux 2.1.125 un-tar-ing the kernel sources takes
980 using local files 12.19s 6.88s 22.91s
982 using NIS 13.92s 8.91s 26.34s
984 using NIS & nscd 10.37s 7.34s 25.30s
986 using NIS+ 27.57s 30.37s 640.46s
988 using NIS+ & nscd 10.25s 7.83s 26.51s
990 using NIS & old nscd [1] 13.83s 8.32s 29.60s
992 Keep in mind that non-namelookup related operations dominate above times.
993 It was just a common complain that using NIS+ unpacking the kernel is
996 [1] The old nscd implementation is not available anymore since it was
997 distributed with glibc up to version 2.0.98 and thus is now replaced.
999 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1001 * Mark Kettenis provided a Hesiod NSS module.
1003 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1004 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1006 * rcmd can now handle netgroups (Dick Streefland).
1008 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1011 * Support for the IPv6 protocol has been added to the socket API, as per the
1012 latest draft standards.
1014 * Support for Linux 2.2 has been added.
1016 * Interface changes relative to the latest 2.0.x release:
1017 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1018 addseverity NEW: Unix98
1019 alphasort64 NEW: LFS
1020 argp_err_exit_status NEW: argp, GNU ext
1021 argp_error NEW: argp, GNU ext
1022 argp_failure NEW: argp, GNU ext
1023 argp_help NEW: argp, GNU ext
1024 argp_parse NEW: argp, GNU ext
1025 argp_program_bug_address NEW: argp, GNU ext
1026 argp_program_version NEW: argp, GNU ext
1027 argp_program_version_hook NEW: argp, GNU ext
1028 argp_state_help NEW: argp, GNU ext
1029 argp_usage NEW: argp, GNU ext
1030 authdes_create NEW: Secure RPC
1031 authdes_getucred NEW: Secure RPC
1032 authdes_pk_create NEW: Secure RPC
1033 backtrace NEW: GNU ext.
1034 backtrace_symbols NEW: GNU ext.
1035 backtrace_symbols_fd NEW: GNU ext.
1037 cacosf NEW: ISO C 9x
1038 cacosh NEW: ISO C 9x
1039 cacoshf NEW: ISO C 9x
1040 cacoshl NEW: ISO C 9x
1041 cacosl NEW: ISO C 9x
1048 casinf NEW: ISO C 9x
1049 casinh NEW: ISO C 9x
1050 casinhf NEW: ISO C 9x
1051 casinhl NEW: ISO C 9x
1052 casinl NEW: ISO C 9x
1054 catanf NEW: ISO C 9x
1055 catanh NEW: ISO C 9x
1056 catanhf NEW: ISO C 9x
1057 catanhl NEW: ISO C 9x
1058 catanl NEW: ISO C 9x
1059 cbc_crypt NEW: Secure RPC
1063 ccoshf NEW: ISO C 9x
1064 ccoshl NEW: ISO C 9x
1070 cimagf NEW: ISO C 9x
1071 cimagl NEW: ISO C 9x
1072 clearerr_locked REMOVED
1073 clntunix_create NEW: sunrpc ext
1075 clog10 NEW: ISO C 9x
1076 clog10f NEW: ISO C 9x
1077 clog10l NEW: ISO C 9x
1087 cprojf NEW: ISO C 9x
1088 cprojl NEW: ISO C 9x
1090 crealf NEW: ISO C 9x
1091 creall NEW: ISO C 9x
1096 csinhf NEW: ISO C 9x
1097 csinhl NEW: ISO C 9x
1100 csqrtf NEW: ISO C 9x
1101 csqrtl NEW: ISO C 9x
1105 ctanhf NEW: ISO C 9x
1106 ctanhl NEW: ISO C 9x
1108 des_setparity NEW: Secure RPC
1109 ecb_crypt NEW: Secure RPC
1110 endutxent NEW: Unix98
1112 exp10f NEW: ISO C 9x
1113 exp10l NEW: ISO C 9x
1117 fattach NEW: STREAMS
1118 fdetach NEW: STREAMS
1122 feclearexcept NEW: ISO C 9x
1123 fegetenv NEW: ISO C 9x
1124 fegetexceptflag NEW: ISO C 9x
1125 fegetround NEW: ISO C 9x
1126 feholdexcept NEW: ISO C 9x
1128 feraiseexcept NEW: ISO C 9x
1129 ferror_locked REMOVED
1130 fesetenv NEW: ISO C 9x
1131 fesetexceptflag NEW: ISO C 9x
1132 fesetround NEW: ISO C 9x
1133 fetestexcept NEW: ISO C 9x
1134 feupdateenv NEW: ISO C 9x
1135 fflush_locked REMOVED
1139 fgets_unlocked NEW: GNU ext.
1140 fileno_locked REMOVED
1152 fputc_locked REMOVED
1153 fputs_unlocked NEW: GNU ext.
1154 fread_unlocked NEW: GNU ext.
1159 fstatvfs NEW: Unix98
1163 ftruncate64 NEW: LFS
1165 fwrite_unlocked NEW: GNU ext.
1166 gai_strerror NEW: IPv6
1170 getchar_locked REMOVED
1172 getdate_err NEW: Unix98
1173 getdate_r NEW: GNU ext.
1175 getnameinfo NEW: IPv6
1176 getnetname NEW: Secure RPC
1177 getpmsg NEW: STREAMS
1178 getpt NEW: Unix98 PTY
1179 getrlimit64 NEW: LFS
1180 getutxent NEW: Unix98
1181 getutxid NEW: Unix98
1182 getutxline NEW: Unix98
1183 glob64 NEW: GNU ext.
1184 globfree64 NEW: GNU ext.
1185 gnu_get_libc_release NEW: GNU ext.
1186 gnu_get_libc_version NEW: GNU ext.
1187 grantpt NEW: Unix98 PTY
1188 host2netname NEW: Secure RPC
1190 iconv_close NEW: iconv
1191 iconv_open NEW: iconv
1192 if_freenameindex NEW: IPv6
1193 if_indextoname NEW: IPv6
1194 if_nameindex NEW: IPv6
1195 if_nametoindex NEW: IPv6
1196 in6addr_any NEW: IPv6
1197 in6addr_loopback NEW: IPv6
1198 inet6_isipv4mapped NEW: IPv6
1199 isastream NEW: STREAMS
1200 iswblank NEW: GNU ext.
1201 key_decryptsession NEW: Secure RPC
1202 key_decryptsession_pk NEW: Secure RPC
1203 key_encryptsession NEW: Secure RPC
1204 key_encryptsession_pk NEW: Secure RPC
1205 key_gendes NEW: Secure RPC
1206 key_get_conv NEW: Secure RPC
1207 key_secretkey_is_set NEW: Secure RPC
1208 key_setnet NEW: Secure RPC
1209 key_setsecret NEW: Secure RPC
1210 llrint NEW: ISO C 9x
1211 llrintf NEW: ISO C 9x
1212 llrintl NEW: ISO C 9x
1213 llround NEW: ISO C 9x
1214 llroundf NEW: ISO C 9x
1215 llroundl NEW: ISO C 9x
1220 lrintf NEW: ISO C 9x
1221 lrintl NEW: ISO C 9x
1222 lround NEW: ISO C 9x
1223 lroundf NEW: ISO C 9x
1224 lroundl NEW: ISO C 9x
1226 makecontext NEW: Unix98
1227 mempcpy NEW: GNU ext.
1230 modify_ldt NEW: kernel
1234 nearbyint NEW: ISO C 9x
1235 nearbyintf NEW: ISO C 9x
1236 nearbyintl NEW: ISO C 9x
1237 netname2host NEW: Secure RPC
1238 netname2user NEW: Secure RPC
1239 nexttoward NEW: ISO C 9x
1240 nexttowardf NEW: ISO C 9x
1241 nexttowardl NEW: ISO C 9x
1245 passwd2des NEW: Secure RPC
1247 pow10f NEW: GNU ext.
1248 pow10l NEW: GNU ext.
1251 printf_size NEW: GNU ext.
1252 printf_size_info NEW: GNU ext.
1253 profil_counter REMOVED
1254 pthread_mutexattr_getkind_np REPLACED
1255 pthread_mutexattr_setkind_np REPLACED
1256 ptsname NEW: Unix98 PTY
1257 ptsname_r NEW: Unix98 PTY
1259 putchar_locked REMOVED
1260 putgrent NEW: GNU ext.
1262 putpmsg NEW: STREAMS
1263 pututxline NEW: Unix98
1267 readdir64_r NEW: LFS
1268 remquo NEW: ISO C 9x
1269 remquof NEW: ISO C 9x
1270 remquol NEW: ISO C 9x
1272 roundf NEW: ISO C 9x
1273 roundl NEW: ISO C 9x
1275 scalbln NEW: ISO C 9x
1276 scalblnf NEW: ISO C 9x
1277 scalblnl NEW: ISO C 9x
1279 sendfile NEW: kernel
1280 setcontext NEW: Unix98
1281 setrlimit64 NEW: LFS
1282 setutxent NEW: Unix98
1284 sigignore NEW: Unix98
1285 sigqueue NEW: POSIX.1b
1286 sigrelse NEW: Unix98
1287 sigset NEW: POSIX.1b
1288 sigtimedwait NEW: POSIX.1b
1289 sigwaitinfo NEW: POSIX.1b
1290 sincos NEW: GNU ext.
1291 sincosf NEW: GNU ext.
1292 sincosl NEW: GNU ext.
1296 strcasestr NEW: GNU ext.
1297 strtoimax NEW: ISO C 9x
1298 strtoumax NEW: ISO C 9x
1299 strverscmp NEW: GNU ext.
1300 svcauthdes_stats NEW: Secure RPC
1301 svcunix_create NEW: sunrpc etx
1302 svcunixfd_create NEW: sunrpc ext
1303 swapcontext NEW: Unix98
1304 tcgetsid NEW: Unix98 PTY
1305 tdestroy NEW: GNU ext.
1306 tgamma NEW: ISO C 9x
1307 tgammaf NEW: ISO C 9x
1308 tgammal NEW: ISO C 9x
1312 truncf NEW: ISO C 9x
1313 truncl NEW: ISO C 9x
1315 unlockpt NEW: Unix98 PTY
1316 updwtmpx NEW: Unix98
1317 user2netname NEW: Secure RPC
1318 utmpxname NEW: Unix98
1319 versionsort NEW: GNU ext.
1320 versionsort64 NEW: GNU ext.
1322 wcscasecmp NEW: GNU ext.
1323 wcsncasecmp NEW: GNU ext.
1324 wcsnlen NEW: GNU ext.
1325 wcstoimax NEW: ISO C 9x
1326 wcstoll NEW: ISO C 9x
1327 wcstoull NEW: ISO C 9x
1328 wcstoumax NEW: ISO C 9x
1330 wordexp NEW: POSIX.2
1331 wordfree NEW: POSIX.2
1332 write_profiling REMOVED
1333 xdecrypt NEW: Secure RPC
1334 xdr_authdes_cred NEW: Secure RPC
1335 xdr_authdes_verf NEW: Secure RPC
1336 xdr_cryptkeyarg NEW: Secure RPC
1337 xdr_cryptkeyarg2 NEW: Secure RPC
1338 xdr_cryptkeyres NEW: Secure RPC
1339 xdr_getcredres NEW: Secure RPC
1340 xdr_key_netstarg NEW: Secure RPC
1341 xdr_key_netstres NEW: Secure RPC
1342 xdr_keybuf NEW: Secure RPC
1343 xdr_keystatus NEW: Secure RPC
1344 xdr_netnamestr NEW: Secure RPC
1345 xdr_sizeof NEW: Secure RPC
1346 xdr_unixcred NEW: sunrpc ext
1347 xencrypt NEW: Secure RPC
1348 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1359 * inet_ntoa is thread-safe
1361 * updwtmp is moved from libutil to libc
1363 * rewrite of cbrt function
1365 * update of timezone data
1379 * add atoll function
1381 * fix complex problems in Berkeley DB code
1383 * fix math functions
1387 * fixed lots of header problems (especially Linux/GNU specific)
1389 * dynamic loader preserves all registers
1391 * Roland McGrath provided support for handling of auxiliary objects in
1392 the ELF dynamic loader.
1394 * support for parallel builds is improved
1398 * GNU extensions are no longer declared by default. To enable them you
1399 must define the macro `_GNU_SOURCE' in your program or compile with
1402 * The library has changed from using GNU ld symbol aliases to using weak
1403 symbols where available. The ELF object file format supports weak
1404 symbols; GNU ld also supports weak symbols in the a.out format. (There
1405 is also now support for other GNU ld extensions in ELF. Use the
1406 `--with-elf' option to configure to indicate you have ELF, and
1407 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1408 of many files which contained only symbol aliases, reducing the size of
1409 the source and the compiled library; many other files were renamed to
1410 less cryptic names previously occupied by the symbol alias files.
1411 There is a new header file <elf.h> for programs which operate on
1412 files in the ELF format.
1414 * Converted to Autoconf version 2, so `configure' has more options.
1415 Run `configure --help' to see the details.
1417 * The library can now be configured to build profiling, highly-optimized
1418 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1419 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1420 `configure' enable building these extra libraries. The shared library is
1421 built by default when using both ELF and GNU ld. When shared libraries
1422 are enabled, the new library `-ldl' is available for arbitrary run-time
1423 loading of shared objects; its interface is defined in <dlfcn.h>. The
1424 new header file <link.h> gives access to the internals of the run-time
1425 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1426 application of same name on other systems and it provides information
1427 about dynamically linked binaries.
1429 * The C library now provides the run-time support code for profiling
1430 executables compiled with `-pg'. Programs can control the profiling code
1431 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1432 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1433 the support for this file format was contributed by David Mosberger-Tang.
1435 * The math code has been replaced with a math library based on fdlibm from
1436 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1437 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1438 functions. The math functions now reside in a separate library, so
1439 programs using them will need to use `-lm' their linking commands.
1441 * John C. Bowman contributed optimized ix87 assembler inline functions.
1443 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1444 mechanism similar to that found in Solaris 2. This is now used for the
1445 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1446 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1447 file controls what services are used for each individual database. This
1448 works by loading shared libraries with names specified in `nsswitch.conf',
1449 so service modules can be changed or added at any time without even
1450 relinking any program. Currently there are the file, db, and NIS based
1451 NSS services available.
1453 * The new functions `strtoq' and `strtouq' parse integer values from
1454 strings, like `strtol' and `strtoul', but they return `long long int' and
1455 `unsigned long long int' values, respectively (64-bit quantities).
1457 * The new functions `strtof' and `strtold' parse floating-point values from
1458 strings, like `strtod', but they return `float' and `long double' values,
1459 respectively (on some machines `double' and `long double' are the same).
1461 * Ulrich Drepper has contributed new implementations of the floating-point
1462 printing and reading code used in the `printf' family of functions and
1463 `strtod', `strtof', and `strtold'. These new functions are perfectly
1464 accurate, and much faster than the old ones.
1466 * The implementation of the POSIX locale model was completely rewritten by
1467 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1468 to compile the POSIX locale definition.
1470 * The former dummy implementations of the strcoll and strxfrm function are
1471 now replaced by fully functional code contributed by Ulrich Drepper. The
1472 collation information comes from the POSIX locale definitions.
1474 * The new header <langinfo.h> defines an interface for accessing
1475 various locale-dependent data (using the locale chosen with `setlocale').
1477 * Ulrich Drepper has contributed a new suite of functions for operation on
1478 wide-character and multibyte-character strings, in <wchar.h>;
1479 and classification and case conversion of wide characters, in <wctype.h>.
1480 These new functions are conforming to the ISO C, Amendement 1 specification.
1482 * There is now a second implementation of the standard I/O library available.
1483 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1484 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1486 * You can now use positional parameter specifications in format strings
1487 for the `printf' and `scanf' families of functions. For example,
1488 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1489 ``Number 6, Mr Jones''. This is mainly useful when providing different
1490 format strings for different languages, whose grammars may dictate
1491 different orderings of the values being printed. To support this
1492 feature, the interface for `register_printf_handler' has changed; see
1493 the header file <printf.h> for details.
1495 * The `printf' and `scanf' families of functions now understand a new
1496 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1497 to group numbers as indicated by the locale; for `scanf' and friends, this
1498 says to accept as valid only a number with all the proper grouping
1499 separators in the right places. In the default "C" locale, numbers are
1500 not grouped; but locales for specific countries will define the usual
1501 conventions (i.e. separate thousands with `,' in the US locale).
1503 * The pgrp functions have been regularized, slightly incompatibly but much
1504 less confusingly. The core functions are now `getpgid' and `setpgid',
1505 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1506 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1507 provided for compatibility. There is no longer an incompatible `getpgrp'
1508 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1510 * The new header file <fts.h> and suite of functions simplify programs that
1511 operate on directory trees. This code comes from 4.4 BSD.
1513 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1514 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1515 NSS scheme used in glibc.
1517 * There is a new malloc debugging hook `__memalign_hook'.
1519 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1520 `unsigned int' in <sys/types.h>. These are for compatibility only and
1521 their use is discouraged.
1523 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1524 done differently, so that it works even without GNU ld.
1526 * New function `euidaccess' checks allowed access to a file like `access',
1527 but using the effective IDs instead of the real IDs.
1529 * The time zone data files have been updated for the latest and greatest
1530 local time conventions of the countries of the world.
1532 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1535 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1536 for formatting floating-point numbers. They are provided only for
1537 compatibility; new programs should use `sprintf' instead. There are
1538 also equivalent function for the `long double' floating-point type and
1539 all functions also exist in a reentrant form.
1541 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1542 functions for maintaining the login-record files (primarily of use to
1543 system programs such as `login'), and convenient functions for
1544 allocating and initializing a pseudo-terminal (pty) device.
1546 * Ulrich Drepper has contributed new support for System V style
1547 shared memory and IPC on systems that support it.
1549 * Ulrich Drepper has contributed several miscellaneous new functions found
1550 in System V: The `hsearch' family of functions provide an effective
1551 implementation of hash tables; `a64l' and `l64a' provide a very simple
1552 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1555 * Ulrich Drepper has contributed new reentrant counterparts for the
1556 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1558 * Ulrich Drepper has contributed new, highly-optimized versions of several
1559 string functions for the i486/Pentium family of processors.
1561 * Ulrich Drepper has updated the Linux-specific code, based largely
1562 on work done in Hongjiu Lu's version of GNU libc for Linux.
1563 The GNU library now supports Linux versions 2.0.10 and later,
1564 using the ELF object file format (i[3456]86-*-linux).
1566 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1568 * David Mosberger-Tang and Richard Henderson have ported the C library
1569 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1570 dynamic linking support for ELF/Alpha.
1572 * Richard Henderson contributed several Alpha optimized assembler function
1573 for arithmetic and string handling.
1575 * Ulrich Drepper has contributed a new set of message catalog functions to
1576 support multiple languages using the <libintl.h> interface, for use with
1577 his new package GNU gettext. Translation volunteers have contributed
1578 catalogs of the library's messages in Spanish, German, and Korean.
1580 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1581 program and the `catgets' function for reading the catalog files it
1582 creates. (The <libintl.h> interface is preferred; we include the
1583 <nl_types.h> interface using `catgets' only for source compatibility with
1584 programs already written to use it.)
1586 * New header file <values.h> gives SVID-compatible names for <limits.h>
1589 * Various new macros, declarations, and small header files for compatibility
1592 * New function `group_member' is a convenient way to check if a process has
1593 a given effective group ID.
1595 * When using GCC 2.7 and later, the socket functions are now declared in a
1596 special way so that passing an argument of type `struct sockaddr_in *',
1597 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1598 `struct sockaddr *' type, does not generate a type-clash warning.
1600 * New function `error' declared in header file <error.h> is a convenient
1601 function for printing error messages and optionally exiting; this is the
1602 canonical function used in GNU programs. The new functions `err', `warn',
1603 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1604 doing the same thing.
1606 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1607 POSIX.2 `glob' function to do ~ and {...} expansion.
1609 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1610 `clearenv' which is used in POSIX.9 is also available.
1612 * New function `getsid' returns session ID number on systems that support it.
1614 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1615 files <db.h> and <mpool.h> provide a rich set of functions for several
1616 types of simple databases stored in memory and in files, and <ndbm.h> is
1617 an old `ndbm'-compatible interface using the `db' functions. Link with
1618 `-ldb' to get these functions.
1620 * New macro `strdupa' copies a string like `strdup', but uses local stack
1621 space from `alloca' instead of dynamic heap space from `malloc'.
1623 * New function `strnlen' is like `strlen' but searches only a given maximum
1624 number of characters for the null terminator. `stpncpy', `strndup' and
1625 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1628 * New function `statfs' in header <sys/statfs.h>.
1630 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1631 provide convenient functions for operating on blocks of null-terminated
1634 * A new suite of functions in <utmp.h> handle all the details of reading
1635 and writing the utmp file.
1637 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1640 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1641 completely POSIX compliant and also implemented the extended functionality
1642 to handle alternate digit representation and alternate era date formats.
1644 * Ulrich Drepper provided an implementation of the `strptime' function
1645 defined in XPG4.2 which transforms a string into a `struct tm' value.
1647 * Paul Eggert provided the tzselect shell script as part of the timezone
1648 code. The shell script makes it easy to select the correct timezone
1651 * The implementation of the malloc family of functions is completely replaced
1652 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1653 The implementation uses the mmap function (if available) and it is
1654 optimized for the use in multi threaded programs.
1656 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1657 functions. This new functionality is usable by specifying a special
1658 salt string and it is compatible with implementation on *BSD systems.
1660 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1661 `getsubopt' to handle second level command line options, `bsd_signal'
1662 to access BSD style `signal' functionality, the obsolete `regexp' style
1665 * the `lchown' function is available on system which support this
1668 * The implementation of the shadow password handling function was contributed
1671 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1673 * POSIX.1g support was added. The <sys/select.h> header is available,
1674 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1675 implementation of `getaddrinfo'.
1679 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1681 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1682 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1684 * The new function `daemon' from 4.4 BSD is useful for server programs that
1685 want to put themselves in the background.
1687 * Joel Sherrill has contributed support for several standalone boards that
1688 run without an operating system.
1690 * `printf', `scanf' and friends now accept a `q' type modifier for long
1691 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1693 * All of the code taken from BSD (notably most of the math and networking
1694 routines) has been updated from the BSD 4.4-Lite release.
1696 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1698 * The new functions `getdomainname' and `setdomainname' fetch or change the
1699 YP/NIS domain name. These are system calls which exist on systems which
1702 * The time zone data files have been updated for the latest international
1705 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1706 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1710 * The C library now includes support for Sun RPC, from Sun's free
1711 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1712 are included. (There is still no support for YP.)
1714 * Tom Quinn has contributed a port of the C library to SGI machines running
1715 Irix 4 (mips-sgi-irix4).
1717 * The new `lockf' function is a simplified interface to the locking
1718 facilities of `fcntl', included for compatibility.
1720 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1722 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1724 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1727 * The error message printed by `assert' for a failed assertion now includes
1728 the name of the program (if using GNU ld) and the name of the calling
1729 function (with versions of GCC that support this).
1731 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1733 * The library now includes the <sys/mman.h> header file and memory
1734 management functions `mmap', `munmap', `mprotect', `msync', and
1735 `madvise', on systems that support those facilities.
1737 * The interface for `mcheck' has changed slightly: the function called to
1738 abort the program when an allocation inconsistency is detected now takes
1739 an argument that indicates the type of failure. The new function
1740 `mprobe' lets you request a consistency check for a particular block at
1741 any time (checks are normally done only when you call `free' or `realloc'
1744 * It is now possible to easily cross-compile the C library, building on one
1745 system a library to run on another machine and/or operating system. All
1746 you need to do is set the variable `HOST_CC' in `configparms' to the
1747 native compiler for programs to run on the machine you are building on (a
1748 few generator programs are used on Unix systems); set `CC' to the
1751 * The new function `fexecve' (only implemented on the GNU system) executes
1752 a program file given a file descriptor already open on the file.
1756 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1757 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1759 * You can set the variable `libprefix' in `configparms' to specify a prefix
1760 to be prepended to installed library files; this makes it easy to install
1761 the GNU C library to be linked as `-lgnuc' or whatever.
1763 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1764 copies a limited number of characters from a string, and returns the
1765 address of the last character written.
1767 * You no longer need to check for whether the installed `stddef.h' is
1768 compatible with the GNU C library. configure now checks for you.
1770 * You can now define a per-stream `fileno' function to convert the
1771 stream's cookie into an integral file descriptor.
1773 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1774 allocates zero bytes of storage, and returns a unique pointer which
1775 you can pass to `realloc' or `free'. The behavior is undefined if
1776 you dereference this pointer.
1778 * The C library now runs on Sony NEWS m68k machines running either
1779 NewsOS 3 or NewsOS 4.
1781 * The new `syscall' function is a system-dependent primitive function
1782 for invoking system calls. It has the canonical behavior on Unix
1783 systems, including unreliable return values for some calls (such as
1784 `pipe', `fork' and `getppid').
1786 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1787 to `EAGAIN', which is the preferred name. On systems whose kernels
1788 use two distinct codes, the C library now translates EWOULDBLOCK to
1789 EAGAIN in every system call function.
1793 * The GNU C Library Reference Manual is now distributed with the library.
1794 `make dvi' will produce a DVI file of the printed manual.
1795 `make info' will produce Info files that you can read on line using C-h i
1796 in Emacs or the `info' program.
1797 Please send comments on the manual to bug-glibc-manual@gnu.org.
1799 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1801 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1803 * Jason Merrill has contributed a port to the Sequent Symmetry running
1804 Dynix version 3 (i386-sequent-dynix).
1806 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1807 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1809 * New function `memory_warnings' lets you arrange to get warnings when
1810 malloc is running out of memory to allocate, like Emacs gives you.
1812 * The C library now contains the relocating allocator used in Emacs 19 for
1813 its editing buffers. This allocator (ralloc) minimizes allocation
1814 overhead and fragmentation by moving allocated regions around whenever it
1815 needs to. You always refer to a ralloc'd region with a "handle" (a
1816 pointer to a pointer--an object of type `void **').
1818 * There is a new `printf' format: `%m' gives you the string corresponding
1819 to the error code in `errno'.
1821 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1822 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1823 pass, the `a' modifier says to fill in a `char **' you pass with a
1826 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1827 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1828 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1830 * `mkstemp' is a traditional Unix function to atomically create and open a
1831 uniquely-named temporary file.
1835 * The standard location for the file that says what the local timezone is
1836 has changed again. It is now `/usr/local/etc/localtime' (or more
1837 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1839 * The distribution no longer contains any files with names longer than 14
1842 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1843 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1845 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1849 * The configuration process has changed quite a bit. The `configure'
1850 script is now used just like the configuration scripts for other GNU
1851 packages. The `sysdeps' directory hierarchy is much rearranged.
1852 The file `INSTALL' explains the new scheme in detail.
1854 * The header files no longer need to be processed into ANSI C and
1855 traditional C versions. There is just one set of files to install, and
1856 it will work with ANSI or old C compilers (including `gcc -traditional').
1858 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1859 MIPS DECStation running Ultrix 4.
1861 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1862 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1863 made itself into a shared library.
1865 * Yet further improved support for the i386, running 4.3 BSD-like systems
1866 (such as Mach 3 with the Unix single-server), or System V.
1868 * New function `strncasecmp' to do case-insensitive string comparison
1869 with limited length.
1871 * New function `strsep' is a reentrant alternative to `strtok'.
1873 * New functions `scandir' and `alphasort' for searching directories.
1875 * New function `setenv' is a better interface to `putenv'.
1877 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1878 function for traversing a directory tree.
1880 * The GNU obstack package is now also part of the C library.
1881 The new function `open_obstack_stream' creates a stdio stream that
1882 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1883 formatted output directly to an obstack.
1885 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1886 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1888 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1890 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1891 things to your strings.
1893 * There are some new test programs: test-fseek, testmb, and testrand.
1895 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1896 These ports are not finished, but are a good starting place for really
1897 supporting those systems.
1899 * `/etc/localtime' is now the standard location for the file that says what
1900 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1901 This follows the general principle that `/etc' is the place for all local
1902 configuration files.
1904 * The C library header files now use `extern "C"' when used by the C++
1905 compiler, so the C library should now work with C++ code.
1907 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1908 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1911 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1912 function which uses the `merge sort' algorithm, and is said to be
1913 significantly faster than the old GNU `qsort' function. Merge sort is
1914 now the standard `qsort' function. The new algorithm can require a lot
1915 of temporary storage; so, the old sorting function is called when the
1916 required storage is not available.
1918 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1919 provides the Unix `crypt' function, plus some other entry points.
1921 * The code and header files taken from 4.4 BSD have been updated with the
1922 latest files released from Berkeley.
1924 ----------------------------------------------------------------------
1925 Copyright information:
1927 Copyright (C) 1992-1999,2000,2001,2002,2003,2004,2005,2006
1928 Free Software Foundation, Inc.
1930 Permission is granted to anyone to make or distribute verbatim copies
1931 of this document as received, in any medium, provided that the
1932 copyright notice and this permission notice are preserved,
1933 thus giving the recipient permission to redistribute in turn.
1935 Permission is granted to distribute modified versions
1936 of this document, or of portions of it,
1937 under the above conditions, provided also that they
1938 carry prominent notices stating who last changed them.
1941 version-control: never