glibc/ChangeLog
Ulrich Drepper 00de59a632 update from main archive 970210
1997-02-11 05:27  Ulrich Drepper  <drepper@cygnus.com>

	* locale/weight.h (collate_rules): It's an u_int32_t array.
	(get_weight): Compute initial SLOT value correctly.

1997-02-10 17:45  Ulrich Drepper  <drepper@cygnus.com>

	* string/argz-ctsep.c: Initialize *LEN when successful.

	* libio/vsnprintf.c: If MAXLEN is 0 return 0.
	* stdio/vsnprintf.c: Likewise.
	Reported by Philip Blundell <pjb27@cam.ac.uk>.

1997-02-06 13:49  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* rellns-sh: No need to check for existance of first parameter.
1997-02-11 04:45:23 +00:00

569 lines
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Plaintext

1997-02-11 05:27 Ulrich Drepper <drepper@cygnus.com>
* locale/weight.h (collate_rules): It's an u_int32_t array.
(get_weight): Compute initial SLOT value correctly.
1997-02-10 17:45 Ulrich Drepper <drepper@cygnus.com>
* string/argz-ctsep.c: Initialize *LEN when successful.
1997-02-09 02:59 Ulrich Drepper <drepper@cygnus.com>
* version.h (VERSION): Bump to 2.0.2.
* posix/Makefile (routines): Add getopt_init.
* posix/getopt.c: Don't get environment variable with nonoption
flags here. Depend on __getopt_nonoption_flags variable filled
somewhere else. This is necessary since the variable must be
removed even when getopt isn't used in case exec(2) gets called.
* posix/getopt_init.c: New file. Initialize __getopt_nonoption_flags
and remove environment variable.
* sysdeps/i386/init-first.c: Call __getopt_clean_environment.
* sysdeps/mach/hurd/i386/init-first.c: Likewise.
* sysdeps/stub/init-first.c: Likewise.
* sysdeps/unix/sysv/linux/init-first.c: Likewise.
* sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Recognize
AT_PAGESZ entry in auxiliary vector and store value in _dl_pagesize.
* sysdeps/generic/crypt-entry.h: Return EOPNOTSUPP when DES
encryption is wanted.
* libio/vsnprintf.c: If MAXLEN is 0 return 0.
* stdio/vsnprintf.c: Likewise.
Reported by Philip Blundell <pjb27@cam.ac.uk>.
* libio/vsnprintf.c: If MAXLEN is 0 return 0.
* stdio/vsnprintf.c: Likewise.
Reported by Philip Blundell <pjb27@cam.ac.uk>.
1997-02-07 17:43 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/generic/sysd-stdio.c: Include <errno.h>.
Change PTR to void *.
* sysdeps/posix/vdprintf.c: Change PTR to void *.
Reported by Brian Oxley <boxley%dev.cm.ssb.com@clipper.ssb.com>.
1997-02-07 17:41 Philip Blundell <pjb27@cam.ac.uk>
* sysdeps/unix/sysv/linux/socketbits.h: Fix typo.
1997-02-06 13:49 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* rellns-sh: No need to check for existance of first parameter.
1997-02-06 13:49 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* rellns-sh: No need to check for existance of first parameter.
1997-02-06 14:50 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/posix/getcwd.c (__getcwd): Fix resource leaks. Reported
by David Holland <dholland@eecs.harvard.edu>.
1997-02-06 14:38 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sunrpc/clnt_tcp.c (readtcp): Pass copy of timeout value to
select, in case it is modified by the latter.
* sunrpc/clnt_udp.c (clntudp_call): Likewise.
* sunrpc/pmap_rmt.c (clnt_broadcast): Likewise.
* sunrpc/svc_tcp.c (readtcp): Likewise.
* sunrpc/svc_authux.c (_svcauth_unix): Fix type of area_gids
array.
* sunrpc/authuxprot.c (xdr_authunix_parms): Check size of uid_t
and gid_t.
* sunrpc/auth_unix.c (authunix_validate): Fix type of second
argument.
1997-02-06 14:29 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* elf/Makefile (extra-objs): Don't zap previous value.
* Makefile (before-compile): Likewise. Don't add gnu/lib-names.h
twice.
1997-02-06 14:19 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/m68k/brk.c: Add workaround for
braindamage (sigh!).
1997-02-06 17:10 Jim Meyering <meyering@asic.sc.ti.com>
* manual/memory.texi: Correct `copystring' example for obstacks.
1997-02-06 14:10 Ulrich Drepper <drepper@cygnus.com>
* Makeconfig: Don't use [:lower:] and [:upper:] in tr since old
GNU tr don't grok it.
1997-02-03 21:13 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/socketbits.h [__GNUC__<2] (struct cmsghdr):
Don't use GNU C extensions.
(CMSG_DATA): Use portable definition.
1997-02-05 05:58 Ulrich Drepper <drepper@cygnus.com>
* elf/ldd.bash.in: Add test for read permission and print appropriate
message. Change warning and error messages to print "ldd: " at start.
* elf/ldd.sh.in: Likewise.
* stdlib/Makefile (routines): Add atoll.
* stdlib/atoll.c: New file.
* stdlib/stdlib.h: Add prototype and optimization for atoll.
* stdlib/a64l.c: Update copyright.
* stdlib/abs.c: Likewise.
* stdlib/atof.c: Likewise.
* stdlib/atoi.c: Likewise.
* stdlib/atol.c: Likewise.
* stdlib/bsearch.c: Likewise.
* stdlib/exit.c: Likewise.
* stdlib/fpioconst.c: Likewise.
* stdlib/fpioconst.h: Likewise.
* stdlib/jrand48.c: Likewise.
* stdlib/jrand48_r.c: Likewise.
* stdlib/labs.c: Likewise.
* stdlib/lcong48.c: Likewise.
* stdlib/lcong48_r.c: Likewise.
* stdlib/llabs.c: Likewise.
* stdlib/lrand48.c: Likewise.
* stdlib/lrand48_r.c: Likewise.
* stdlib/mblen.c: Likewise.
* stdlib/mbstowcs.c: Likewise.
* stdlib/mbtowc.c: Likewise.
* stdlib/mp_clz_tab.c: Likewise.
* stdlib/mrand48.c: Likewise.
* stdlib/mrand48_r.c: Likewise.
* stdlib/msort.c: Likewise.
* stdlib/nrand48.c: Likewise.
* stdlib/nrand48_r.c: Likewise.
* stdlib/qsort.c: Likewise.
* stdlib/rpmatch.c: Likewise.
* stdlib/seed48.c: Likewise.
* stdlib/seed48_r.c: Likewise.
* stdlib/srand48.c: Likewise.
* stdlib/srand48_r.c: Likewise.
* stdlib/strtod.c: Likewise.
* stdlib/wcstombs.c: Likewise.
* stdlib/wctomb.c: Likewise.
1997-02-05 05:08 Ulrich Drepper <drepper@cygnus.com>
* stdlib/mp_clz_tab.c (__clz_tab): Follow change in GMP and define
as const.
1997-02-04 23:57 Fila Kolodny <fila@ibi.com>
* sysdeps/unix/sysv/linux/socketbits.h: Define __need_NULL before
including <stddef.h>.
1997-02-03 20:01 H.J. Lu <hjl@gnu.ai.mit.edu>
* time/Makefile (tzbases, tzlinks): New.
(tzfiles): Changed to $(tzbases) $(tzlinks).
($(tzfiles:%=$(objpfx)z.%): Make $(tzlinks) depend on $(tzbases).
1997-02-02 12:13 H.J. Lu <hjl@gnu.ai.mit.edu>
* Makefile (install): Ignore error from ldconfig.
* time/zic.c (mkdirs): Double check the error return of mkdir ().
1997-02-04 22:01 Ulrich Drepper <drepper@cygnus.com>
* stdio-common/vfprintf.c: Prepare to use __va_copy for architectures
like PPC where va_list is no integral type.
1997-02-04 15:27 Roma Ekzhanov <ekzhanov@paragraph.com>
* posix/getopt.c (exchange): Don't allocate nonoption_flags array
if nonoption_flags_len == -1.
1997-02-04 02:08 Ulrich Drepper <drepper@cygnus.com>
* Version 2.0.1 net release.
1997-02-03 23:34 Stephen L Moshier <moshier@world.std.com>
* sysdeps/libm-ieee754/s_tanhl.c: Fix backwards result sign.
1997-02-03 19:59 Ulrich Drepper <drepper@cygnus.com>
* stdlib/getsubopt.c: Don't return `=' for suboption which has
a parameter. Reported by Gary L. Hennigan <glhenni@cs.sandia.gov>.
1997-02-03 18:20 Thorsten Kukuk <kukuk@weber.uni-paderborn.de>
* nis/rpcsvc/yp_proh.h (ypresp_key_val): Also change order of
values as in yp.x and yp.h.
1997-02-03 16:58 Ulrich Drepper <drepper@cygnus.com>
* nis/rpcsvc/yp.x (struct ypresp_key_val): Revert patch from
1997-02-03 02:17. Sun's implementation internally corrects
this bug but we don't want to hide this from the user.
* nis/rpcsvc/yp.h: Likewise.
1997-02-01 18:28 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/net/ppp_defs.h: Protect against multiple
inclusion.
1997-02-02 14:56 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* manual/nss.texi, manual/pattern.texi, manual/string.texi: Doc
fixes.
1997-02-02 11:51 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* MakeTAGS (sysdep-sources, sysdep-headers): New variables.
(all-sources, all-headers): Use them instead of $(sources) and
$(headers) when searching in sysdep directories.
1997-02-02 11:49 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makerules (REAL_MAKE_VERSION): Use internal make function
instead of shelling out.
1997-02-02 11:47 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* time/Makefile (install-test-data): Remove mkdir command, zic can
handle that gracefully.
1997-02-03 14:07 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/asm-syntax.h: Add back file which got lost sometime
somehow.
1997-02-02 07:46 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sunrpc/Makefile: Check $(cross-compiling) only after including
../Makeconfig.
($(objpfx)rpcsvc/%.h, $(objpfx)x%.c): Add empty command to force
being considered as a rule.
(generated): Add stamp files before the inclusion of Makerules to
magically mark them as not being intermediate via the `generated'
target.
1997-02-03 02:33 Ulrich Drepper <drepper@cygnus.com>
* elf/dl-deps.c (_dl_map_object_deps): Handle multiple AUXILIARY
entries. This is still no complete implementation since AUXILIARY
entries in other shared objects are not yet handled.
* libio/libio.h (_IO_cookie_io_functions_t): Move to C++ protected
place.
* po/es.po: Update.
* po/fr.po: Update.
* po/nl.po: Update.
* time/Makefile: Better cross-compile support. Avoid test which
cannot be run.
(CFLAGS-tzset.c): New variable. Overwrite TZDEFAULT value from
tzfile.h file.
* time/tzfile.c (__tzfile_read): Allow TZDEFAULT start with '/' even
in SUID programs.
* time/tzset.c (__tzset_internal): If TZ envvar is not set use same
default values as in tzfile.c.
* elf/dynamic-link.h (elf_get_dynamic_info): Recognize versioning
tags.
* elf/link.h: Likewise.
* elf/elf.h: Add tag definitions and data structures for versioning.
1997-02-03 02:17 Ulrich Drepper <drepper@cygnus.com>
* nis/rpcsvc/yp.x (struct ypresp_key_val): There is not stupid
"Sun bug". This is the order of elements also used by 4.4BSD.
* nis/rpcsvc/yp.h: Likewise.
Reported by HJ Lu.
1997-02-02 12:13 H.J. Lu <hjl@gnu.ai.mit.edu>
* sunrpc/Makefile ($(objpfx)x%.h, $(objpfx)x%.c): Add "@:" as
action.
* Makefile (install): Pass installation directories as arguments
to ldconfig.
1997-02-02 23:15 Ulrich Drepper <drepper@cygnus.com>
* malloc/malloc.c (__after_morecore_hook): New variable.
(malloc_extend_top): Call __after_morecore_hook if set.
(main_trim): Likewise.
* malloc/malloc.h: Add declaration of __after_morecore_hook.
Suggested by Marcus Daniels.
1997-02-02 23:00 Marcus G. Daniels <marcus@tdb.com>
* malloc/malloc.c (rEALLOc): Protect tsd_setspecific call by
#ifndef NO_THREADS.
(mallinfo): Likewise.
* malloc/malloc.c (__morecore): Make external since it is used in
programs.
1997-02-02 15:10 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/statbuf.h (struct stat): Make st_dev field
unsigned.
1997-02-01 23:36 Richard Henderson <rth@tamu.edu>
* sysdeps/alpha/stxncpy.S ($unaligned) [src % 8 > dst % 8]: Don't
use t6 as a temporary; it contains bits we still need in $u_head.
1997-01-31 15:05 John Bowman <bowman@ipp-garching.mpg.de>
* sysdeps/i386/fpu/__math.h [__USE_MISC]: Don't declare prototypes
using __ prefix. Add prototype for log1p.
1997-02-02 00:39 Ulrich Drepper <drepper@cygnus.com>
* dirent/dirent.h: Add description _DIRENT_HAVE_D_TYPE.
1997-02-01 17:04 Philip Blundell <pjb27@cam.ac.uk>
* inet/netinet/ip.h (MAX_IPOPTLEN): Add definition.
1997-02-01 17:00 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/socketbits.h: Add definition of cmsghdr
structure plus related macros.
* sysdeps/unix/sysv/linux/cmsg_nxthdr.c: New file.
* sysdeps/unix/sysv/linux/Makefile [$(subdir)=socket]
(sysdep_routines): Add cmsg_nxthdr.
* sysdeps/unix/sysv/linux/Dist: Add cmsg_nxthdr.c.
Suggested by Philip Blundell <pjb27@cam.ac.uk>.
1997-02-01 12:34 Ulrich Drepper <drepper@cygnus.com>
* time/strftime.c: Define _strftime_copytm without protecting arguments
which breaks the definition.
1997-02-01 03:31 Thorsten Kukuk <kukuk@weber.uni-paderborn.de>
* nis/rpcsvc/yp_prot.h: Move definition of yppushresp_xfr after
definition of type for element.
1997-02-01 03:28 Philip Blundell <pjb27@cam.ac.uk>
* sydsdeps/unix/sysv/linux/netinet/in.h: Add IPv6 related IPPROTO_*
constants.
1997-02-01 03:09 H.J. Lu <hjl@lucon.org>
* Makefile: Pass PARALLELMFLAGS to sub-makes.
* Makefile.in: Mention PARALLELMFLAGS and pass to main Makefile.
1997-01-31 Paul Eggert <eggert@twinsun.com>
* time/mktime.c (HAVE_LIMITS_H, HAVE_LOCALTIME_R, STDC_HEADERS):
Define if _LIBC is defined.
<limits.h>: Include if HAVE_LIMITS_H instead of if
__STDC__ || __GNU_LIBRARY__ || STDC_HEADERS.
<stdlib.h>: Similarly, include if STDC_HEADERS.
(localtime_r): Redo #ifdef to make it clear that glibc has
localtime_r now.
1997-02-29 20:08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sunrpc/Makefile ($(objpfx)rpcsvc/%.h, $(objpfx)x%.c): Use stamp
file to avoid unnecessary recompilation.
1997-01-29 19:33 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makefile: Set install-others, not install_others.
(before-compile): Use += to preserve previous value.
($(inst_includedir)/gnu/lib-names.h): Remove obsolete comment and
fix dependency name.
($(objpfx)lib-names.h): Remove rule.
* Makeconfig ($(common-objpfx)gnu/lib-names.h): Generate it here,
with correct name, using an intermediate stamp file.
(common-generated): Add gnu/lib-names.h.
(before-compile): Add $(common-objpfx)gnu/lib-names.h.
1997-01-30 18:29 Richard Henderson <richard@atheist.tamu.edu>
* malloc/malloc.c (MAGICBYTE): Use cast to size_t instead of unsigned
to prevent warnings on 64 bit systems.
Reported by Paul Wouters <paul@xtdnet.nl>.
* sysdeps/alpha/dl-machine.h: Revert check for broken gas. By default
we assume it works.
1997-01-30 03:24 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/i386/elf/start.S (_start): Align stack pointer to
double word boundary before pushing args for main. This way we
don't get penalties for misaligned memory accesses. Reported by
Edward Seidl <seidl@janed.com>.
* Makefile: Correct *my* changes of Richards patch of 1997-01-28 10:51.
Patch by HJ Lu.
* misc/bsd-compat.c: Update copyright.
* misc/efgcvt.c: Likewise.
* misc/efgcvt_r.c: Likewise.
* misc/error.c: Likewise.
* misc/error.h: Likewise.
* misc/fstab.c: Likewise.
* misc/init-misc.c: Likewise.
* misc/lsearch.c: Likewise.
* misc/mntent.c: Likewise.
* misc/qefgcvt.c: Likewise.
* misc/qefgcvt_r.c: Likewise.
* nss/databases.def: Likewise.
* nss/db-Makefile: Likewise.
* nss/ethers-lookup.c: Likewise.
* nss/hosts-lookup.c: Likewise.
* nss/netgrp-lookup.c: Likewise.
* nss/nsswitch.h: Likewise.
* nss/proto-lookup.c: Likewise.
* nss/rpc-lookup.c: Likewise.
* nss/service-lookup.c: Likewise.
* nss/nss_db/db-netgrp.c: Likewise.
* nss/nss_files/files-grp.c: Likewise.
* nss/nss_files/files-hosts.c: Likewise.
* nss/nss_files/files-network.c: Likewise.
* nss/nss_files/files-proto.c: Likewise.
* nss/nss_files/files-pwd.c: Likewise.
* nss/nss_files/files-rpc.c: Likewise.
* nss/nss_files/files-service.c: Likewise.
* nss/nss_files/files-spwd.c: Likewise.
* shadow/fgetspent.c: Likewise.
* shadow/fgetspent_r.c: Likewise.
* shadow/getspent.c: Likewise.
* shadow/getspent_r.c: Likewise.
* shadow/getspnam.c: Likewise.
* shadow/getspnam_r.c: Likewise.
* shadow/putspent.c: Likewise.
* shadow/sgetspent.c: Likewise.
* shadow/sgetspent_r.c: Likewise.
* sysdeps/i386/init-first.c: Likewise.
* sysdeps/unix/i386/sysdep.S: Likewise.
* shadow/shadow.h: Don't use __USE_REENTRENT. All code must be
prepared to be running in a multi-threaded environment. Change
to __USE_MISC unless the function is defined in POSIX.1 (in this
case also test for __USE_POSIX).
* dirent/dirent.h: Likewise.
* grp/grp.h: Likewise.
* inet/aliases.h: Likewise.
* libio/libio.h: Likewise.
* libio/stdio.h: Likewise.
* login/utmp.h: Likewise.
* math/mathcalls.h: Likewise.
* misc/mntent.h: Likewise.
* pwd/pwd.h: Likewise.
* resolv/netdb.h: Likewise.
* stdlib/stdlib.h: Likewise.
* string/string.h: Likewise.
* sunrpc/rpc/netdb.h: Likewise.
* sysdeps/generic/crypt.h: Likewise.
* sysdeps/unix/sysv/linux/errnos.h: Likewise.
* time/time.h: Likewise.
1997-01-30 00:27 Fila Kolodny <fila@ibi.com>
* sunrpc/Makefile (install-others): Add rpcsvc/bootparam_prot.h
only if not cross compiling.
1997-01-29 16:16 Fila Kolodny <fila@ibi.com>
* sysdeps/posix/sigpause.c: Include <stddef.h> to get definition of
NULL.
* sysdeps/posix/sigwait.c: Likewise.
1997-01-28 23:42 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makeconfig ($(common-objpfx)config.make): Depend on
$(..)config.make.in.
1997-01-29 04:30 Ulrich Drepper <drepper@cygnus.com>
* sunrpc/Makefile: Don't generate headers derived from .x files when
crosscompiling.
1997-01-28 10:51 Richard Henderson <rth@tamu.edu>
* Makefile: Generate gnu/lib-names.h in before-compile.
* nss/nss.h (NSS_SHLIB_REVISION): Turn it into a const variable.
* nss/nssswitch.c (__nss_shlib_revision): New variable. Initialize
to the revision found for LIBNSS_FILES_SO.
(nss_initilized): Removed. It was tested but never set.
(nss_lookup_function): Don't treat NSS_SHLIB_REVISION as a literal.
* shlib-versions: Tag all alpha-linux shlibs with a .1 "minor"
not just libc. Except instead of ld.so.1.1 use ld-linux.so.2.
* sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S: Typo in ldgp.
1997-01-28 12:16 Andreas Jaeger <aj@arthur.pfalz.de>
* elf/Makefile (CFLAGS-dl-load.c): Use += to not
override the definition.
1997-01-28 20:13 Fila Kolodny <fila@ibi.com>
* config.make.in (malloc): Remove.
1997-01-28 04:23 Ulrich Drepper <drepper@cygnus.com>
* version.h (VERSION): Bump to 2.0.1.
* posix/getopt.c: Handle another problem introduced by the
nonoption_flags array. We must be able to work with reordered
argv arrays. Reported by Andreas Schwab.
1997-01-28 02:38 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/i386/clone.S: Correct handling of new
stack.
1997-01-27 17:34 Thorsten Kukuk <kukuk@weber.uni-paderborn.de>
* nis/rpcsvc/yp_prot.h: Correct definitions and types in file so
that it works with yp.h.
1997-01-27 13:28 Ulrich Drepper <drepper@cygnus.com>
* malloc/malloc.h (__malloc_initialized) [_LIBC]: Define as
__libc_malloc_initialized so that this variable is not shared with
other users of GNU malloc.
Suggested by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
* mcheck.h: Correct typo. Use malloc/ instead of new-malloc/.
* sysdeps/i386/Makefile (CFLAGS-dl-load.c, CFLAGS-dl-reloc.c): New
variables to prevent warnings.
* sysdeps/i386/dl-machine.h (fixup): Add prototype and declare
using attribute regparm.
(ELF_MACHINE_RUNTIME_TRAMPOLINE): Rewrite so that no register
is changed by the resolver code.
1997-01-14 14:20 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* malloc/malloc.c (weak_variable): Define.
(__malloc_initialize_hook, __free_hook, __malloc_hook, __realloc_hook,
__memalign_hook): Make them weak definitions.
1997-01-26 11:35 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/getdents.c: Don't write beyond buffer
limits, correctly take structure padding into account, use correct
offset when resetting the stream, change heuristic to assume an
average name length of 14 characters.
1997-01-25 18:06 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/alpha/termbits.h: Protect against multiple
inclusion.
See ChangeLog.6 for earlier changes.