| Commit message (Collapse) | Author | Age | Files | Lines |
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* lib/tzset.c (tzset): Elaborate comment, based on explanations by
Paul Eggert.
* lib/ctime.c (rpl_ctime): Likewise.
* lib/localtime.c (rpl_localtime): Likewise.
* lib/mktime.c (mktime): Likewise.
* lib/strftime-fixes.c (rpl_strftime): Likewise.
* lib/wcsftime.c (rpl_wcsftime): Likewise.
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* lib/mktime.c: Add #ifs to make the algorithmic workaround independent
from the native Windows workaround.
* m4/mktime.m4 (gl_FUNC_MKTIME_WORKS): New macro, extracted from
gl_FUNC_MKTIME. If guessing, set gl_cv_func_working_mktime to
'guessing no'.
(gl_FUNC_MKTIME): Require it. Require AC_CANONICAL_HOST.
Set REPLACE_MKTIME to 1 on native Windows. Define NEED_MKTIME_WORKING,
NEED_MKTIME_WINDOWS.
(gl_FUNC_MKTIME_INTERNAL): Require gl_FUNC_MKTIME_WORKS, not
gl_FUNC_MKTIME. Set WANT_MKTIME_INTERNAL, not REPLACE_MKTIME. Define
NEED_MKTIME_INTERNAL.
* m4/timegm.m4 (gl_FUNC_TIMEGM): Require gl_FUNC_MKTIME_WORKS, not
gl_FUNC_MKTIME. Cope with 'guessing yes' value.
* modules/mktime-internal (configure.ac): Test WANT_MKTIME_INTERNAL,
not REPLACE_MKTIME.
* doc/posix-functions/mktime.texi: Mention the native Windows
workaround.
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Use the spelling "timestamp", as that is what POSIX uses.
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* build-aux/gendocs.sh (version):
* doc/gendocs_template:
* doc/gendocs_template_min:
* doc/gnulib.texi:
* lib/version-etc.c (COPYRIGHT_YEAR):
Update copyright dates by hand in templates and the like.
* all files: Run 'make update-copyright'.
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Problem reported by Ludovic Courtès in:
http://lists.gnu.org/archive/html/bug-gnulib/2016-06/msg00068.html
* lib/mktime.c (mktime) [!_LIBC && HAVE_TZSET]: Call tzset.
* m4/mktime.m4 (gl_FUNC_MKTIME): Check for tzset.
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* lib/mktime.c: Fix spelling.
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* lib/mktime.c: Omit 'pragma GCC optimize ("wrapv")'.
(long_int): Require width for INT_MAX * 3 * (seconds per year),
instead of merely for INT_MAX * 2. In practice platforms that
do the latter also do the former.
(TIME_T_MIN, TIME_T_MAX, TIME_T_MIDPOINT, SHR): Remove.
(shr): New static function, replacing SHR. All uses changed.
(mktime_min, mktime_max): New constants, replacing TIME_T_MIN
and TIME_T_MAX. All uses changed.
(ydhms_diff, guess_time_tm, ranged_convert, __mktime_internal):
Use long_int, not time_t.
(long_int_avg): New static function, replacing time_t_avg.
All uses changed. Round toward positive infinity, as that
generates slightly better code.
(time_t_add_ok, time_t_int_add_ok): Remove. All uses replaced
by INT_ADD_WRAPV.
(guess_time_tm): Accept time, not a pointer to it. All uses changed.
(convert_time): New static function.
(ranged_convert): Use it
(ranged_convert): Check for *T out of [mktime_min, mktime_max] range.
Use simpler test for loop exit.
(__mktime_internal): Store negative of guessed offset, to simplify
overflow checking. Remove no-longer-needed test for small time_t
overflows.
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Call tzset just once, at the start, rather than for every test
case. This lets us measure the CPU cost of mktime as opposed to
that of tzset. This is relevant when TZ is not set and glibc is
being used. This speeds up tests by a factor of 40 on my Fedora
23 x86-64 platform.
* lib/mktime.c (main) [DEBUG_MKTIME]: Call localtime at the start,
to call tzset and as a sanity check. Later on, use localtime_r
instead of localtime.
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* lib/mktime.c [DEBUG_MKTIME]: Do not include <config.h>.
Include <string.h>, for strcmp.
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* lib/mktime.c (DEBUG_MKTIME): Define to 0 if not defined.
Simplify later usage accordingly.
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This avoids some assumptions about wraparound arithmetic on
signed integer overflow.
* lib/mktime-internal.h (mktime_offset_t): New type.
(mktime_internal): Use it in decl.
* lib/mktime.c, lib/timegm.c (mktime_offset_t) [_LIBC]: New type.
* lib/mktime.c (__mktime_internal, localtime_offset):
* lib/timegm.c (timegm): Use it.
* m4/mktime.m4 (gl_TIME_T_IS_SIGNED): New macro.
(gl_FUNC_MKTIME): Require it.
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* lib/mktime.c: Include stdbool.h, intprops.h, verify.h.
(WRAPV): Remove; no longer needed.
(verify): Remove. Replace all uses with call to verify.h 'verify'.
(TYPE_IS_INTEGER, TYPE_SIGNED, TYPE_MINIMUM, TYPE_MAXIMUM):
Remove. Use intprops.h defns instead.
(leapyear, isdst_differ, time_t_add_ok, time_t_int_ok):
Use bool for Boolean, for clarity.
(time_t_add_ok, time_t_int_add_ok): Use INT_ADD_WRAPV to
detect integer overflow.
* modules/mktime (Depends-on): Add intprops, stdbool, verify.
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These macros were not portable to every conforming C11 ones'
complement platform. It's not worth the hassle of porting to some
platforms that use ones' complement or signed magnitude, as such
platforms are almost purely theoretical nowadays and porting even
to some of them makes the code harder to review for little
practical benefit. Problem reported by Florian Weimer in:
https://sourceware.org/ml/libc-alpha/2016-04/msg00295.html
* lib/intprops.h (TYPE_TWOS_COMPLEMENT, TYPE_ONES_COMPLEMENT)
(TYPE_SIGNED_MAGNITUDE, _GL_INT_TWOS_COMPLEMENT):
* lib/mktime.c (TYPE_TWOS_COMPLEMENT):
* lib/strtol.c (TYPE_TWOS_COMPLEMENT, TYPE_ONES_COMPLEMENT)
(TYPE_SIGNED_MAGNITUDE):
Remove. All uses rewritten to assume two's complement, which is
all we can reasonably test nowadays anyway.
* top/maint.mk (_intprops_names): Remove the removed macros.
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* lib/mktime.c [DEBUG] (DEBUG): Rename to DEBUG_MKTIME. See:
https://sourceware.org/ml/libc-alpha/2016-01/msg00267.html
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* build-aux/gendocs.sh (version):
* doc/gendocs_template:
* doc/gendocs_template_min:
* doc/gnulib.texi:
* lib/version-etc.c (COPYRIGHT_YEAR):
Update copyright dates by hand in templates and the like.
* all files: Run 'make update-copyright'.
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* doc/gnulib.texi:
* lib/version-etc.c (COPYRIGHT_YEAR): Update copyright date.
* all files: Run 'make update-copyright'.
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* lib/mktime.c: Use "#if defined DEBUG && DEBUG", not "#if DEBUG",
as that works with both Glibc's and Gnulib's style.
See thread starting at Siddhesh Poyarekar's bug report at:
http://lists.gnu.org/archive/html/bug-gnulib/2014-06/msg00102.html
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I ran 'make update-copyright'.
Signed-off-by: Eric Blake <eblake@redhat.com>
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Run "make update-copyright". Compare to commit 1602f0a from last year.
Signed-off-by: Eric Blake <eblake@redhat.com>
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* lib/mktime.c (leapyear, ydhms_diff): Now static, not static inline.
* m4/mktime.m4 (gl_PREREQ_MKTIME): Do not require AC_C_INLINE.
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* config/srclist.txt: Uncomment mktime.c.
* lib/mktime.c: Sync from glibc master. This incorporates 3 changes.
First, indent with tabs, since glibc uses tabs and doesn't want to
change and we'd rather be identical to glibc. Also, two small
coding changes:
(isdst_differ): Use &&, not &, as && is the usual style.
(__mktime_internal): Rename local var from abs_diff to approx_abs_diff
for clarity.
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* config/argz.mk, lib/accept4.c, lib/alignof.h, lib/alloca.in.h:
* lib/alphasort.c, lib/arcfour.c, lib/arcfour.h, lib/arctwo.c:
* lib/arctwo.h, lib/argz.c, lib/arpa_inet.in.h, lib/asnprintf.c:
* lib/asprintf.c, lib/assert.in.h, lib/base32.c, lib/base32.h:
* lib/base64.c, lib/base64.h, lib/c-ctype.c, lib/c-ctype.h:
* lib/c-strcase.h, lib/c-strcasecmp.c, lib/c-strncasecmp.c:
* lib/check-version.c, lib/check-version.h, lib/config.charset:
* lib/ctype.in.h, lib/des.c, lib/des.h, lib/dup3.c, lib/errno.in.h:
* lib/float+.h, lib/fnmatch.c, lib/fnmatch.in.h, lib/fnmatch_loop.c:
* lib/fseeko.c, lib/gai_strerror.c, lib/gc-gnulib.c:
* lib/gc-libgcrypt.c, lib/gc-pbkdf2-sha1.c, lib/gc.h:
* lib/getaddrinfo.c, lib/getdelim.c, lib/getfilecon.c, lib/getline.c:
* lib/getlogin_r.c, lib/getpass.c, lib/getpass.h, lib/gettext.h:
* lib/gettimeofday.c, lib/glob.in.h, lib/glthread/cond.c:
* lib/glthread/cond.h, lib/glthread/lock.c, lib/glthread/lock.h:
* lib/glthread/thread.c, lib/glthread/thread.h:
* lib/glthread/threadlib.c, lib/glthread/yield.h, lib/hmac-md5.c:
* lib/hmac-sha1.c, lib/hmac.h, lib/iconv.c, lib/iconv.in.h:
* lib/iconv_close.c, lib/iconv_open.c, lib/inet_ntop.c, lib/isfinite.c:
* lib/isinf.c, lib/iswblank.c, lib/langinfo.in.h, lib/link.c:
* lib/localcharset.c, lib/localcharset.h, lib/lseek.c, lib/malloc.c:
* lib/malloca.c, lib/malloca.h, lib/md2.c, lib/md2.h, lib/md4.c:
* lib/md4.h, lib/md5.c, lib/md5.h, lib/memmem.c, lib/mempcpy.c:
* lib/memset.c, lib/memxor.c, lib/memxor.h, lib/minmax.h, lib/mktime.c:
* lib/msvc-inval.c, lib/msvc-inval.h, lib/msvc-nothrow.c:
* lib/msvc-nothrow.h, lib/netdb.in.h, lib/netinet_in.in.h, lib/nproc.c:
* lib/nproc.h, lib/obstack_printf.c, lib/pathmax.h, lib/pipe.c:
* lib/pipe2.c, lib/poll.c, lib/poll.in.h, lib/printf-args.c:
* lib/printf-args.h, lib/printf-parse.c, lib/printf-parse.h:
* lib/pselect.c, lib/pthread.in.h, lib/pty-private.h, lib/pty.in.h:
* lib/read-file.c, lib/read-file.h, lib/ref-add.sin, lib/ref-del.sin:
* lib/regcomp.c, lib/regex.c, lib/regex.h, lib/regex_internal.c:
* lib/regex_internal.h, lib/regexec.c, lib/rijndael-alg-fst.c:
* lib/rijndael-alg-fst.h, lib/rijndael-api-fst.c:
* lib/rijndael-api-fst.h, lib/rint.c, lib/rintf.c, lib/rintl.c:
* lib/round.c, lib/roundf.c, lib/roundl.c, lib/scandir.c, lib/select.c:
* lib/sha1.c, lib/sha1.h, lib/size_max.h, lib/snprintf.c:
* lib/stdalign.in.h, lib/stdarg.in.h, lib/stdbool.in.h:
* lib/stddef.in.h, lib/stdint.in.h, lib/stdio.in.h, lib/str-kmp.h:
* lib/str-two-way.h, lib/strcasecmp.c, lib/strcasestr.c, lib/strdup.c:
* lib/striconv.c, lib/striconv.h, lib/string.in.h, lib/strings.in.h:
* lib/strncasecmp.c, lib/strndup.c, lib/strnlen.c, lib/strpbrk.c:
* lib/strptime.c, lib/strsep.c, lib/strstr.c, lib/strverscmp.c:
* lib/sys_file.in.h, lib/sys_ioctl.in.h, lib/sys_select.in.h:
* lib/sys_socket.in.h, lib/sys_stat.in.h, lib/sys_time.in.h:
* lib/sys_times.in.h, lib/sys_types.in.h, lib/sys_uio.in.h:
* lib/sys_utsname.in.h, lib/sys_wait.in.h, lib/tcgetsid.c:
* lib/termios.in.h, lib/time.in.h, lib/time_r.c, lib/timegm.c:
* lib/times.c, lib/unictype/3level.h, lib/unictype/3levelbit.h:
* lib/unistd.in.h, lib/vasnprintf.c, lib/vasnprintf.h, lib/vasprintf.c:
* lib/vsnprintf.c, lib/waitpid.c, lib/wchar.in.h, lib/wctype.in.h:
* lib/xsize.h, tests/test-closein.c, tests/test-des.c:
* tests/test-fclose.c, tests/test-fgetc.c, tests/test-filevercmp.c:
* tests/test-fputc.c, tests/test-fread.c, tests/test-fwrite.c:
* tests/test-gc-arcfour.c, tests/test-gc-arctwo.c, tests/test-gc-des.c:
* tests/test-gc-hmac-md5.c, tests/test-gc-hmac-sha1.c:
* tests/test-gc-md2.c, tests/test-gc-md4.c, tests/test-gc-md5.c:
* tests/test-gc-pbkdf2-sha1.c, tests/test-gc-rijndael.c:
* tests/test-gc-sha1.c, tests/test-gc.c, tests/test-getdelim.c:
* tests/test-getline.c, tests/test-getndelim2.c, tests/test-md2.c:
* tests/test-md4.c, tests/test-parse-datetime.c, tests/test-perror.c:
* tests/test-perror2.c, tests/test-pipe.c, tests/test-pipe2.c:
* tests/test-poll.c, tests/test-quotearg-simple.c:
* tests/test-quotearg.c, tests/test-quotearg.h:
* tests/test-round-ieee.c, tests/test-round1.c:
* tests/test-roundf-ieee.c, tests/test-roundf1.c:
* tests/test-roundl-ieee.c, tests/test-roundl.c:
* tests/test-safe-alloc.c, tests/test-sigpipe.c:
* tests/test-spawn-pipe-child.c, tests/test-spawn-pipe-main.c:
* tests/test-strerror.c, tests/test-strerror_r.c:
* tests/test-strsignal.c, tests/test-strverscmp.c:
* tests/test-xmemdup0.c:
Replace FSF snail mail addresses with URLs, as per GNU coding
standards. See glibc bug
<http://sourceware.org/bugzilla/show_bug.cgi?id=13673>.
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* lib/mktime.c (WRAPV): Define to 0 on all non-glibc systems.
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Run "make update-copyright".
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* lib/mktime.c (long_int_is_wide_enough): Move this assertion to
the top level, to make it clearer that the assumption about
long_int width is being checked. See
<http://lists.gnu.org/archive/html/bug-gnulib/2011-01/msg00554.html>.
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* lib/intprops.h (TYPE_MINIMUM, TYPE_MAXIMUM): Do not shift a
negative number, which the C Standard says has undefined behavior.
In practice this is not a problem, but might as well do it by the book.
Reported by Rich Felker and Eric Blake; see
<http://lists.gnu.org/archive/html/bug-gnulib/2011-01/msg00493.html>.
* lib/strtol.c (TYPE_MINIMUM, TYPE_MAXIMUM): Likewise.
* m4/mktime.m4 (AC_FUNC_MKTIME): Likewise.
* m4/nanosleep.m4 (gl_FUNC_NANOSLEEP): Likewise.
* m4/parse-datetime.m4 (gl_PARSE_DATETIME): Likewise.
* m4/stdint.m4 (gl_STDINT_H): Likewise.
* lib/mktime.c (TYPE_MAXIMUM): Redo slightly to match the others.
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* lib/mktime.c (mktime) [DEBUG]: #undef mktime before #defining it.
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* lib/mktime.c (isdst_differ): New function.
(__mktime_internal): Use it systematically for all isdst comparisons.
This completes the fix for libc BZ #6723, and removes the need for
normalizing tm_isdst. See
<http://sourceware.org/bugzilla/show_bug.cgi?id=6723>
(not_equal_tm) [DEBUG]: Use isdst_differ here, too.
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This was prompted by a bug report by Benjamin Lindner for MinGW
<http://lists.gnu.org/archive/html/bug-gnulib/2011-01/msg00472.html>.
His bug is due to signed integer overflow (0 - INT_MIN), and I
I scanned through mktime.c looking for other integer overflow
problems, fixing all the bugs I found.
Although the C Standard says the resulting code is still not safe
in the presence of integer overflow, in practice it should be good
enough for all real-world two's-complement implementations, except
for debugging environments that deliberately trap on integer
overflow (e.g., gcc -ftrapv).
* lib/mktime.c (WRAPV): New macro.
(SHR): Also check that long_int and time_t shift right in the
usual way, before using the fast-but-unportable method.
(TYPE_ONES_COMPLEMENT, TYPE_SIGNED_MAGNITUDE): Remove, no longer
used. The code already assumed two's complement, so there's
no need to test for alternatives. All uses removed.
(TYPE_MAXIMUM): Don't rely here on overflow behavior not defined by
the C standard. Problem reported by Rich Felker in
<http://lists.gnu.org/archive/html/bug-gnulib/2011-01/msg00488.html>.
(twos_complement_arithmetic): Also check long_int and time_t.
(time_t_avg, time_t_add_ok, time_t_int_add_ok): New functions.
(guess_time_tm, ranged_convert, __mktime_internal): Use them.
(__mktime_internal): Avoid integer overflow with unary subtraction
in two instances where -1 - X is an adequate replacement for -X,
since the calculations are approximate.
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* lib/mktime.c (long_int): New type. This works around a problem
on NetBSD 5 / i386, where 'long int' and 'int' are both 32 bits
but time_t is 64 bits, and where I expect the existing code is
wrong in some cases.
(leapyear, ydhms_diff, guess_time_tm, __mktime_internal): Use it.
(ydhms_diff): Bring back the compile-time check for wide-enough
year and yday.
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* lib/mktime.c (__mktime_internal): Fix misspelling in comment.
This merges all recent glibc changes of importance.
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Run the new "make update-copyright" rule.
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Use the same procedure as for 2009, outlined in
http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/20081
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* lib/mktime-internal.h: New file.
* lib/mktime.c: Use it rather than open-coding a declaration.
* lib/timegm.c: Likewise.
* modules/mktime (Files): Ship it.
* modules/timegm (Files): Likewise.
Suggested by Bruno Haible.
Signed-off-by: Eric Blake <ebb9@byu.net>
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* lib/fchmodat.c (lchmod): Mark unused variables.
* lib/getopt.c (_getopt_initialize): Likewise.
* lib/mktime.c (__mktime_internal): Provide prototype.
* lib/inttostr.c (inttostr): Avoid compiler warning even with
older gcc that do not understand #pragma GCC diagnostic.
* lib/uinttostr.c (inttype_is_unsigned): Define.
* lib/umaxtostr.c (inttype_is_unsigned): Likewise.
Signed-off-by: Eric Blake <ebb9@byu.net>
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* lib/mktime.c (__mktime_internal): Normalize tp->tm_isdst value.
Reported by Michael Ringe <Michael.Ringe@gmx.de> in
<http://sourceware.org/bugzilla/show_bug.cgi?id=6723>.
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POSIX and GNU instead of separate include files like time_r.h
and timegm.h. This implementation tries out a simpler approach
for replacing decls in standard include files (as compared to
the string module), somewhat as an experiment.
* config/srclist.txt: Comment out mktime.c for now.
* doc/gnulib-tool.texi (Initial import): Don't use time_r as an example
since it doesn't apply any more. Use generic wording instead.
* MODULES.html.sh (Support for systems lacking POSIX:2001): New module
'time'.
* lib/time_.h, m4/time_h.m4, modules/time: New files.
* lib/strptime.h, lib/time_r.h, lib/timegm.h: Remove.
* lib/mktime.c: Include config.h depending on _LIBC, not HAVE_CONFIG_H.
Don't include <sys/types.h>; no longer needed since we assume C89.
* lib/mktime.c: Don't include "time_r.h"; no longer needed.
* lib/strftime.c: Likewise.
* lib/time_r.c: Likewise.
* lib/nanosleep.c (nanosleep): #undef after include files, not before.
* lib/nanosleep.c: Include <time.h> first, to check interface.
* lib/strptime.c: Likewise.
* lib/time_r.c: Likewise.
* lib/timegm.c: Likewise.
* lib/strptime.c: Don't include strptime.h or time_r.h; no longer
needed.
* lib/timegm.c: Don't include timegm.h; no longer needed.
* lib/timespec.h: Don't include <sys/time.h> before <time.h>;
time.h now handles any problems in that area.
(struct timespec, nanosleep): Remove; time.h now arranges for these.
* lib/xnanosleep.c: Don't include timespec.h; no longer needed now
that time.h defines struct timespec.
* m4/nanosleep.m4 (gl_FUNC_NANOSLEEP): Check that nanosleep is declared.
Set REPLACE_NANOSLEEP. Don't AC_DEFINE nanosleep; the time module now
handles that.
* m4/strptime.m4 (gl_FUNC_STPRTIME): Set REPLACE_STRPTIME.
* m4/time_r.m4 (gl_TIME_R): Don't define HAVE_TIME_R_POSIX; no longer
needed. Set REPLACE_LOCALTIME.
* m4/timegm.m4 (gl_FUNC_TIMEGM): Set REPLACE_TIMEGM.
* m4/timespec.m4 (gl_CHECK_TYPE_STRUCT_TIMESPEC): Move to time_h.m4.
(gl_TIMESPEC): Don't check for sys/time.h or struct timespec or
nanosleep; time_h.m4 now does that. Don't require
gl_USE_SYSTEM_EXTENSIONS; no longer needed directly, and the time
module handles this now.
* modules/getdate (Depends-on): Remove timespec. Add time.
* modules/nanosleep (Depends-on): Likewise.
* modules/stat-time (Depends-on): Likewise.
* modules/nanosleep (Include): Include time.h, not timespec.h.
* modules/strptime (Files): Remove lib/strptime.h.
(Depends-on): Add extensions, time.
(Include): Include time.h, not strptime.h.
* modules/time_r (Files): Remove lib/time_r.h.
(Depends-on): Add time.
(Include): Include time.h, not time_r.h.
* modules/timegm: Likewise.
* modules/timespec (Description): Now does timespec-related decls
of our own, instead of struct timespec itself.
(Depends-on): Add time; remove extensions.
(Maintainer): Add self.
* modules/utimecmp (Depends-on): Add time; remove timespec.
* modules/utimens (Depends-on): Likewise.
* modules/xnanosleep (Depends-on): Likewise.
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2821 is fixed.
* lib/mktime.c (guess_time_tm): Fix bug where mktime
returned the maximum time_t value rather than (time_t) -1.
Problem originally reported by William Bardwell
<http://sourceware.org/bugzilla/show_bug.cgi?id=2821>.
* m4/mktime.m4 (AC_FUNC_MKTIME): Sync from Autoconf.
Check for unistd.h too, since Autoconf doesn't assume POSIX.
Also:
2006-09-08 Paul Eggert <eggert@cs.ucla.edu>
Add year_2050_test to catch glibc bug 2821
<http://sourceware.org/bugzilla/show_bug.cgi?id=2821>.
2006-08-15 Paul Eggert <eggert@cs.ucla.edu>
Prefer #ifdef to #if.
2006-04-02 Paul Eggert <eggert@cs.ucla.edu>
Return from 'main' instead of calling 'exit'.
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(ranged_convert): Don't save conversion in a temporary struct.
This causes a warning with GCC 4.0.0, and anyway in the typical
case it's not worth the extra 100 bytes or so of code.
(ranged_convert, __mktime_internal): When calling a function via a
pointer P, use P () rather than (*P) (), as we now assume C89 or
better.
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TYPE_SIGNED_MAGNITUDE, TYPE_MINIMUM, TYPE_MAXIMUM): Sync from
intprops.h.
* strtol.c: Likewise.
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