update from main archive 970118 cvs/libc-970119

Sun Jan 19 04:38:20 1997  Ulrich Drepper  <drepper@cygnus.com>

	* config.make.in (have-ksh, KSH): New variables.  Will be filled
	in by configure.
	* configure.in: Add test for ksh like shell (prefer bash).
	* time/Makefile (tests): Depend on install-test-data.
	(distribute): Add simplebackw.
	(generated-dirs): New variable.
	[$(have-ksh)==yes] (install-others): Add iso3166.tab and zone.tab.
	(install-bin): Add tzselect.
	(install-test-data): Install the zoneinfo files which are needed
	for the test case in the build directory.
	(test-tz-ENV): New variable.  Call test-tz program using data in
	build directory.
	* time/simpleback: New file.
	* time/test-tz.c: Pretty print.
	* time/tzfile.c: Use value of environment variable TZDIR as directory
	to look for zone info files.
	don't let search for DST data destroy already found values.
	* time/tzselect.ksh: Use @KSH@ and @TZDIR@ to be substituted when
	installing.
	* time/tzset.c (__tzset_internal): Avoid freeing string twice.
	Set DST zone name to normal zone name if no information is provided.

	* time/mktime.c (mktime): Call __tzset_internal to use current
	value of TZ.

	* Makerules (common-clean): Remove $(generated-dirs) inclusing content.

	* glibcbug.in: Fix several bugs.  Reported by several people.

	* elf/Makefile: Correct dependecies for $(objpfx)ldd.

	* inet/netinet/ip.h: Define IPTOS_LOWCOST and IPTOS_MINCOST.

	* locale/C-time.c: Update copyright.
	* locale/localeinfo.h: Likewise.
	* sysdeps/unix/bsd/bsd4.4/direntry.h: Likewise.

	* locale/programs/ld-time.c (time_finish): Correct message string.
	* locale/programs/linereader.c (lr_token): Use correctly `number'
	not `digit' in message string.

	* stdlib/strtol.c [UNSIGNED]: Don't punt immediately when `-' is
	seen.  Instead return ULONG_MAX and set ERANGE.
	* stdlib/tst-strtol.c: Correct test to reflect above change.

Sun Jan 19 03:22:30 1997  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/sys/mtio.h: Don't use <linux/mtio.h>.
	We must not use <linux/posix_types.h>.

	* sysdeps/unix/sysv/linux/sys/ipc_buf.h: Don't use __kernel_* types
	since we must not use <linux/posix_types.h>.
	* sysdeps/unix/sysv/linux/sys/procfs.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/sys/ipc_buf.h: New file.  Similar
	to sysdeps/unix/sysv/linux/sys/ipc_buf.h, but use alpha relavent
	types.
	* sysdeps/unix/sysv/linux/alpha/sys/procfs.h: New file.  Similar
	to sysdeps/unix/sysv/linux/sys/procfs.h, but use alpha relavent
	types.

Sun Jan 19 01:48:20 1997  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* sysdeps/libm-i387/e_exp.S: Correct computation of fractional
	part.
	* sysdeps/libm-i387/e_expf.S: Likewise.
	* sysdeps/libm-i387/e_expl.S: Likewise.
	* sysdeps/libm-i387/s_expm1.S: Correct computation of fractional
	part.  Take care of additional value left on stack by fscale.
	* sysdeps/libm-i387/s_expm1f.S: Likewise.
	* sysdeps/libm-i387/s_expm1l.S: Likewise.

Fri Jan 17 17:45:32 1997  Ulrich Drepper  <drepper@cygnus.com>

	* posix/getopt.c: Change all direct usages of `gettext' to `_'.

	* sysdeps/generic/sysd-stdio.c (__stdio_reopen): Add missing
	parameter.
	Reported by Harmanjit Singh <harman@netearth.iitd.ernet.in>.

Thu Jan 16 23:39:25 1997  Ulrich Drepper  <drepper@cygnus.com>

	* stdio-common/Makefile (tests): Add scanf11.
	* stdio-common/scanf11.c: New file.
	* stdio-common/vfscanf.c (__vfscanf): Increment `done' when %n
	was processed and value is not suppressed.
	* stdio-common/bug10.c: Correct test to expect %n increment the
	return value of scanf.
	* stdio-common/scanf1.c: Likewise.
	* stdio-common/scanf3.c: Likewise.
	* stdio-common/scanf10.c: Likewise.
	* stdio-common/tstdiomisc.c: Likewise.

	* time/strptime.c: Add lots of conditional compiling to enable use
	outside glibc.  When used in glibc, make sure C locale format
	strings will always be recognized.

Sat Jan 11 18:53:47 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/sys/sysmacros.h (major, minor, makedev):
	Fix definitions so that they work with __kernel_dev_t.

Sat Jan 11 14:24:10 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/kernel_sigaction.h,
	sysdeps/unix/sysv/linux/alpha/kernel_sigaction.h,
	sysdeps/unix/sysv/linux/sigaction.c: New files.
	* sysdeps/unix/sysv/linux/syscalls.list: Add s_sigaction.

Sun Jan 12 15:22:33 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libc-symbols.h (link_warning): Make sure that the .gnu.warning
	section is not allocated.
	Update and reformat copyright.

Sun Jan 12 12:19:28 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/Makefile ($(objpfx)ldd): Fix depedency list.

Sat Jan 11 15:11:26 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/Makefile ($(common-objpfx)sysd-syscalls): Fix
	command so that it works in subdirectories.

Wed Jan  8 22:07:58 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/i386/syscalls.list: Add s_getgroups and
	s_setgroups.
	* sysdeps/unix/sysv/linux/m68k/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/i386/getgroups.c,
	sysdeps/unix/sysv/linux/i386/setgroups.c,
	sysdeps/unix/sysv/linux/m68k/getgroups.c,
	sysdeps/unix/sysv/linux/m68k/setgroups.c: New files.

Wed Jan  8 19:42:59 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile (config.status): Delete bogus rule.
	($(objpfx)glibcbug): Renamed from plain `glibcbug', depend on
	config.status in build directory, fix command to change to build
	directory.
	* Makeconfig ($(common-objpfx)config.status): Depend on version.h.

Thu Jan  9 08:47:54 1997  Andreas Jaeger  <aj@arthur.pfalz.de>

	* glibcbug.in (while): We test for four and not five conditions,
	set MAIL_AGENT instead of RMAIL, filter spaces and tabs.

Thu Jan 16 22:00:27 1997  Ulrich Drepper  <drepper@cygnus.com>

	* misc/syslog.c: Don't define cancel_handler if _LIBC_REENTRANT
	is not defined.  Reported by Andreas Jaeger.

Thu Jan  9 08:47:54 1997  Andreas Jaeger  <aj@arthur.pfalz.de>

	* new-malloc/malloc.c (__MALLOC_P): define call to pthread
	initializer only if NO_THREADS is not defined.

Wed Jan  8 21:28:58 1997  Andreas Jaeger  <aj@arthur.pfalz.de>

	* resolv/nss_dns/dns-host.c: Clean-up: delete unnecessary includes
	and variables.

Thu Jan 16 21:50:27 1997  Ulrich Drepper  <drepper@cygnus.com>

	* inet/arpa/inet.h: Include <netinet/in.h> to get struct in_addr
	defined.

Tue Jan  7 17:29:59 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makerules (LDLIBS-c.so): New variable.

Tue Jan  7 19:22:00 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile ($(includedir)/gnu/lib-names.h): Define the library
	names as strings, not as sequence of tokens that may fall apart.

Fri Jan 10 14:08:41 1997  Roland McGrath  <roland@fmh.frob.com>

	* time/tzfile.c (__tzfile_read): Check for bogus type and zone name
	indices in data file and punt, so a bogus file can't crash us.

Thu Jan 16 20:29:15 1997  Ulrich Drepper  <drepper@cygnus.com>

	* values.h [__USE_MISC]: Define BITSPERBYTE.

Fri Jan 17 14:16:28 1997  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* stdio/vdprintf.c: Moved file to ...
	* sysdeps/posix/vdprintf.c: Here.  De-ansideclificate.
	* sysdeps/stub/vdprintf.c: New file.
	* sysdeps/mach/hurd/vdprintf.c: New file.

Thu Jan  9 15:59:35 1997  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* sysdeps/mach/hurd/posix_opt.h: New file.

	* sysdeps/mach/hurd/sigwait.c (sigwait): Don't affect signal mask.

	* sysdeps/unix/bsd/tcsendbrk.c (tcsendbreak): Finish
	deansideclification.

	* sysdeps/mach/libc-lock.h: Add kludges to pretend to implement
	recursive locks.

Tue Jan  7 09:48:15 1997  Andreas Jaeger  <aj@arthur.pfalz.de>

	* signal/sigempty.c (sigemptyset): Correct typo: Empty set should
	have all bits zero.

8 files changed, 517 insertions, 106 deletions

diff --git a/time/Makefile b/time/Makefile
index 966d9f2790..af03fa2961 100644
--- a/time/Makefile
+++ b/time/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
+# Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -12,9 +12,9 @@
 # Library General Public License for more details.
 
 # You should have received a copy of the GNU Library General Public
-# License along with the GNU C Library; see the file COPYING.LIB.  If
-# not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-# Cambridge, MA 02139, USA.
+# License along with the GNU C Library; see the file COPYING.LIB.  If not,
+# write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
 
 #
 #	Makefile for time routines
@@ -36,15 +36,21 @@ routines	:= offtime asctime clock ctime ctime_r difftime	\
 others	:= ap zdump zic
 tests	:= test_time clocktest test-tz
 
+# Before the test-tz test can be run we need the data to be installed.
+tests: install-test-data
+
+
 tzfiles := africa antarctica asia australasia europe northamerica \
 	   southamerica etcetera factory systemv backward \
 	   solar87 solar88 solar89
 # pacificnew doesn't compile; if it is to be used, it should be included in
 # northamerica.
-distribute := $(distribute) $(tzfiles) leapseconds pacificnew
+distribute := $(distribute) $(tzfiles) leapseconds pacificnew simplebackw
 
 install-sbin := zic zdump
 
+generated-dirs = testdata
+
 all: # Make this the default target; it will be defined in Rules.
 
 include ../Makeconfig	# Get objpfx defined so we can use it below.
@@ -72,6 +78,11 @@ install-others = $(addprefix $(zonedir)/,$(zonenames) \
 		 $(installed-localtime-file) $(installed-posixrules-file)
 endif
 
+ifeq ($(have-ksh),yes)
+install-others += $(zonedir)/iso3166.tab $(zonedir)/zone.tab
+install-bin += tzselect
+endif
+
 include ../Rules
 
 
@@ -146,3 +157,25 @@ CFLAGS-zic.c = -Wno-strict-prototypes -DNOID $(tz-cflags)
 CFLAGS-ialloc.c = -Wno-strict-prototypes -DNOID
 CFLAGS-scheck.c = -Wno-strict-prototypes -DNOID
 CFLAGS-tzfile.c = $(tz-cflags)
+
+# We have to make sure the data for testing the tz functions is available.
+.PHONY: install-test-data
+install-test-data: northamerica $(objpfx)zic $(leapseconds) yearistype \
+		   etcetera simplebackw
+	-mkdir $(objpfx)testdata
+	$(built-program-cmd) -d $(objpfx)testdata -L $(leapseconds) \
+	  -y yearistype northamerica
+	$(built-program-cmd) -d $(objpfx)testdata -L $(leapseconds) \
+	  -y yearistype etcetera
+	$(built-program-cmd) -d $(objpfx)testdata -L $(leapseconds) \
+	  -y yearistype simplebackw
+test-tz-ENV = TZDIR=$(objpfx)testdata
+
+
+$(objpfx)tzselect: tzselect.ksh
+	sed -e 's%@KSH@%$(KSH)%g' \
+	    -e 's%@TZDIR@%$(zonedir)%g' < $< > $@.new
+	chmod 555 $@.new
+	mv -f $@.new $@
+
+$(addprefix $(zonedir)/,iso3166.tab zone.tab): $(zonedir)/%: %; $(do-install)
diff --git a/time/mktime.c b/time/mktime.c
index 7fa5ccb23a..223872f228 100644
--- a/time/mktime.c
+++ b/time/mktime.c
@@ -1,22 +1,21 @@
-/* Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
    Contributed by Paul Eggert (eggert@twinsun.com).
 
-This file is part of the GNU C Library.
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
 
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
 /* Define this to have a standalone program to test this implementation of
    mktime.  */
@@ -86,6 +85,9 @@ Cambridge, MA 02139, USA.  */
   ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
 #endif
 
+/* Prototype for the internal function to get information based on TZ.  */
+extern void __tzset_internal __P ((int always));
+
 /* How many days come before each month (0-12).  */
 const unsigned short int __mon_yday[2][13] =
   {
@@ -161,6 +163,11 @@ time_t
 mktime (tp)
      struct tm *tp;
 {
+#ifdef _LIBC
+  /* Update internal database according to current TZ setting.  */
+  __tzset_internal (1);
+#endif
+
   return __mktime_internal (tp, localtime_r, &localtime_offset);
 }
 
diff --git a/time/simplebackw b/time/simplebackw
new file mode 100644
index 0000000000..860624a1c3
--- /dev/null
+++ b/time/simplebackw
@@ -0,0 +1,2 @@
+Link	Etc/UTC			UTC
+Link	Etc/Universal		Universal
diff --git a/time/strptime.c b/time/strptime.c
index bd38f9681f..f220313475 100644
--- a/time/strptime.c
+++ b/time/strptime.c
@@ -1,5 +1,5 @@
-/* strptime - Convert a string representation of time to a time value.
-   Copyright (C) 1996 Free Software Foundation, Inc.
+/* Convert a string representation of time to a time value.
+   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
@@ -18,24 +18,71 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+/* XXX This version of the implementation is not really complete.
+   Some of the fields cannot add information alone.  But if seeing
+   some of them in the same format (such as year, week and weekday)
+   this is enough information for determining the date.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
 #include <ctype.h>
 #include <langinfo.h>
 #include <limits.h>
 #include <string.h>
 #include <time.h>
 
-#include "../locale/localeinfo.h"
+#ifdef _LIBC
+# include "../locale/localeinfo.h"
+#endif
+
+
+#ifndef __P
+# if defined (__GNUC__) || (defined (__STDC__) && __STDC__)
+#  define __P(args) args
+# else
+#  define __P(args) ()
+# endif  /* GCC.  */
+#endif  /* Not __P.  */
+
+#if ! HAVE_LOCALTIME_R && ! defined (localtime_r)
+#ifdef _LIBC
+#define localtime_r __localtime_r
+#else
+/* Approximate localtime_r as best we can in its absence.  */
+#define localtime_r my_localtime_r
+static struct tm *localtime_r __P ((const time_t *, struct tm *));
+static struct tm *
+localtime_r (t, tp)
+     const time_t *t;
+     struct tm *tp;
+{
+  struct tm *l = localtime (t);
+  if (! l)
+    return 0;
+  *tp = *l;
+  return tp;
+}
+#endif /* ! _LIBC */
+#endif /* ! HAVE_LOCALTIME_R && ! defined (localtime_r) */
 
 
 #define match_char(ch1, ch2) if (ch1 != ch2) return NULL
-#define match_string(cs1, s2)						      \
+#if defined __GNUC__ && __GNUC__ >= 2
+# define match_string(cs1, s2) \
   ({ size_t len = strlen (cs1);						      \
-     int result = strncasecmp (cs1, s2, len) == 0;			      \
-     if (result) s2 += len;						      \
+     int result = strncasecmp ((cs1), (s2), len) == 0;			      \
+     if (result) (s2) += len;						      \
      result; })
+#else
+/* Oh come on.  Get a reasonable compiler.  */
+# define match_string(cs1, s2) \
+  (strncasecmp ((cs1), (s2), strlen (cs1)) ? 0 : ((s2) += strlen (cs1), 1))
+#endif
 /* We intentionally do not use isdigit() for testing because this will
    lead to problems with the wide character version.  */
-#define get_number(from, to)						      \
+#define get_number(from, to) \
   do {									      \
     val = 0;								      \
     if (*rp < '0' || *rp > '9')						      \
@@ -47,33 +94,98 @@
     if (val < from || val > to)						      \
       return NULL;							      \
   } while (0)
-#define get_alt_number(from, to)					      \
+#ifdef _NL_CURRENT
+# define get_alt_number(from, to) \
   do {									      \
-    const char *alts = _NL_CURRENT (LC_TIME, ALT_DIGITS);		      \
-    val = 0;								      \
-    while (*alts != '\0')						      \
+    if (*decided != raw)						      \
       {									      \
-	size_t len = strlen (alts);					      \
-	if (strncasecmp (alts, rp, len) == 0)				      \
-	  break;							      \
-	alts = strchr (alts, '\0') + 1;					      \
-	++val;								      \
+	const char *alts = _NL_CURRENT (LC_TIME, ALT_DIGITS);		      \
+	val = 0;							      \
+	while (*alts != '\0')						      \
+	  {								      \
+	    size_t len = strlen (alts);					      \
+	    if (strncasecmp (alts, rp, len) == 0)			      \
+	      break;							      \
+	    alts = strchr (alts, '\0') + 1;				      \
+	    ++val;							      \
+	  }								      \
+	if (*alts == '\0')						      \
+	  {								      \
+	    if (*decided == loc && val != 0)				      \
+	      return NULL;						      \
+	  }								      \
+	else								      \
+	  {								      \
+	    *decided = loc;						      \
+	    break;							      \
+	  }								      \
       }									      \
-    if (*alts == '\0')							      \
-      return NULL;							      \
-  } while (0)
-#define recursive(new_fmt)						      \
-  do {									      \
-    if (*new_fmt == '\0')						      \
-      return NULL;							      \
-    rp = strptime (rp, new_fmt, tm);					      \
-    if (rp == NULL)							      \
-      return NULL;							      \
+    get_number (from, to);						      \
   } while (0)
+#else
+# define get_alt_number(from, to) \
+  /* We don't have the alternate representation.  */			      \
+  get_number(from, to)
+#endif
+#define recursive(new_fmt) \
+  (*(new_fmt) != '\0'							      \
+   || strptime_internal (rp, (new_fmt), tm, decided) != NULL)
 
 
-char *
-strptime (const char *buf, const char *format, struct tm *tm)
+#ifdef _LIBC
+/* This is defined in locale/C-time.c in the GNU libc.  */
+extern const struct locale_data _nl_C_LC_TIME;
+
+# define weekday_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (DAY_1)].string)
+# define ab_weekday_name \
+  (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABDAY_1)].string)
+# define month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (MON_1)].string)
+# define ab_month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABMON_1)].string)
+# define HERE_D_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_T_FMT)].string)
+# define HERE_D_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_T_FMT)].string)
+# define HERE_AM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (AM_STR)].string)
+# define HERE_PM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (PM_STR)].string)
+# define HERE_T_FMT_AMPM \
+  (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT_AMPM)].string)
+# define HERE_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT)].string)
+#else
+static char const weekday_name[][10] =
+  {
+    "Sunday", "Monday", "Tuesday", "Wednesday",
+    "Thursday", "Friday", "Saturday"
+  };
+static char const ab_weekday_name[][4] =
+  {
+    "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+  };
+static char const month_name[][10] =
+  {
+    "January", "February", "March", "April", "May", "June",
+    "July", "August", "September", "October", "November", "December"
+  };
+static char const ab_month_name[][4] =
+  {
+    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+  };
+# define HERE_D_T_FMT "%a %b %e %H:%M:%S %Y"
+# define HERE_D_FMT "%m/%d/%y"
+# define HERE_AM_STR "AM"
+# define HERE_PM_STR "PM"
+# define HERE_T_FMT_AMPM "%I:%M:%S %p"
+# define HERE_T_FMT "%H:%M:%S"
+#endif
+
+/* Status of lookup: do we use the locale data or the raw data?  */
+enum locale_status { not, loc, raw };
+
+
+static char *
+strptime_internal (buf, format, tm, decided)
+     const char *buf;
+     const char *format;
+     struct tm *tm;
+     enum locale_status *decided;
 {
   const char *rp;
   const char *fmt;
@@ -106,6 +218,10 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	}
 
       ++fmt;
+#ifndef _NL_CURRENT
+      /* We need this for handling the `E' modifier.  */
+    start_over:
+#endif
       switch (*fmt++)
 	{
 	case '%':
@@ -117,10 +233,34 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	  /* Match day of week.  */
 	  for (cnt = 0; cnt < 7; ++cnt)
 	    {
-	      if (match_string (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), rp))
-		break;
-	      if (match_string (_NL_CURRENT (LC_TIME, DAY_1 + cnt), rp))
-		break;
+#ifdef _NL_CURRENT
+	      if (*decided !=raw)
+		{
+		  if (match_string (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), rp))
+		    {
+		      if (*decided == not
+			  && strcmp (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt),
+				     ab_weekday_name[cnt]))
+			*decided = loc;
+		      break;
+		    }
+		  if (match_string (_NL_CURRENT (LC_TIME, DAY_1 + cnt), rp))
+		    {
+		      if (*decided == not
+			  && strcmp (_NL_CURRENT (LC_TIME, DAY_1 + cnt),
+				     weekday_name[cnt]))
+			*decided = loc;
+		      break;
+		    }
+		}
+#endif
+	      if (*decided != loc
+		  && (match_string (ab_weekday_name[cnt], rp)
+		      || match_string (weekday_name[cnt], rp)))
+		{
+		  *decided = raw;
+		  break;
+		}
 	    }
 	  if (cnt == 7)
 	    /* Does not match a weekday name.  */
@@ -133,10 +273,33 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	  /* Match month name.  */
 	  for (cnt = 0; cnt < 12; ++cnt)
 	    {
-	      if (match_string (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), rp))
-		break;
-	      if (match_string (_NL_CURRENT (LC_TIME, MON_1 + cnt), rp))
-		break;
+#ifdef _NL_CURRENT
+	      if (*decided !=raw)
+		{
+		  if (match_string (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), rp))
+		    {
+		      if (*decided == not
+			  && strcmp (_NL_CURRENT (LC_TIME, ABMON_1 + cnt),
+				     ab_month_name[cnt]))
+			*decided = loc;
+		      break;
+		    }
+		  if (match_string (_NL_CURRENT (LC_TIME, MON_1 + cnt), rp))
+		    {
+		      if (*decided == not
+			  && strcmp (_NL_CURRENT (LC_TIME, MON_1 + cnt),
+				     month_name[cnt]))
+			*decided = loc;
+		      break;
+		    }
+		}
+#endif
+	      if (match_string (ab_month_name[cnt], rp)
+		  || match_string (month_name[cnt], rp))
+		{
+		  *decided = raw;
+		  break;
+		}
 	    }
 	  if (cnt == 12)
 	    /* Does not match a month name.  */
@@ -145,7 +308,26 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	  break;
 	case 'c':
 	  /* Match locale's date and time format.  */
-	  recursive (_NL_CURRENT (LC_TIME, D_T_FMT));
+#ifdef _NL_CURRENT
+	  if (*decided != raw)
+	    {
+	      if (!recursive (_NL_CURRENT (LC_TIME, D_T_FMT)))
+		{
+		  if (*decided == loc)
+		    return NULL;
+		}
+	      else
+		{
+		  if (*decided == not &&
+		      strcmp (_NL_CURRENT (LC_TIME, D_T_FMT), HERE_D_T_FMT))
+		    *decided = loc;
+		  break;
+		}
+	      *decided = raw;
+	    }
+#endif
+	  if (!recursive (HERE_D_T_FMT))
+	    return NULL;
 	  break;
 	case 'C':
 	  /* Match century number.  */
@@ -158,9 +340,30 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	  get_number (1, 31);
 	  tm->tm_mday = val;
 	  break;
+	case 'x':
+#ifdef _NL_CURRENT
+	  if (*decided != raw)
+	    {
+	      if (!recursive (_NL_CURRENT (LC_TIME, D_FMT)))
+		{
+		  if (*decided == loc)
+		    return NULL;
+		}
+	      else
+		{
+		  if (decided == not
+		      && strcmp (_NL_CURRENT (LC_TIME, D_FMT), HERE_D_FMT))
+		    *decided = loc;
+		  break;
+		}
+	      *decided = raw;
+	    }
+#endif
+	  /* Fall through.  */
 	case 'D':
 	  /* Match standard day format.  */
-	  recursive ("%m/%d/%y");
+	  if (!recursive (HERE_D_FMT))
+	    return NULL;
 	  break;
 	case 'H':
 	  /* Match hour in 24-hour clock.  */
@@ -197,19 +400,57 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	  break;
 	case 'p':
 	  /* Match locale's equivalent of AM/PM.  */
-	  if (match_string (_NL_CURRENT (LC_TIME, AM_STR), rp))
-	    break;
-	  if (match_string (_NL_CURRENT (LC_TIME, PM_STR), rp))
+#ifdef _NL_CURRENT
+	  if (*decided != raw)
 	    {
-	      is_pm = 1;
-	      break;
+	      if (match_string (_NL_CURRENT (LC_TIME, AM_STR), rp))
+		{
+		  if (strcmp (_NL_CURRENT (LC_TIME, AM_STR), HERE_AM_STR))
+		    *decided = loc;
+		  break;
+		}
+	      if (match_string (_NL_CURRENT (LC_TIME, PM_STR), rp))
+		{
+		  if (strcmp (_NL_CURRENT (LC_TIME, PM_STR), HERE_PM_STR))
+		    *decided = loc;
+		  is_pm = 1;
+		  break;
+		}
+	      *decided = raw;
 	    }
-	  return NULL;
+#endif
+	  if (!match_string (HERE_AM_STR, rp))
+	    if (match_string (HERE_PM_STR, rp))
+	      is_pm = 1;
+	    else
+	      return NULL;
+	  break;
 	case 'r':
-	  recursive (_NL_CURRENT (LC_TIME, T_FMT_AMPM));
+#ifdef _NL_CURRENT
+	  if (*decided != raw)
+	    {
+	      if (!recursive (_NL_CURRENT (LC_TIME, T_FMT_AMPM)))
+		{
+		  if (*decided == loc)
+		    return NULL;
+		}
+	      else
+		{
+		  if (*decided == not &&
+		      strcmp (_NL_CURRENT (LC_TIME, T_FMT_AMPM),
+			      HERE_T_FMT_AMPM))
+		    *decided = loc;
+		  break;
+		}
+	      *decided = raw;
+	    }
+#endif
+	  if (!recursive (HERE_T_FMT_AMPM))
+	    return NULL;
 	  break;
 	case 'R':
-	  recursive ("%H:%M");
+	  if (!recursive ("%H:%M"))
+	    return NULL;
 	  break;
 	case 's':
 	  {
@@ -229,7 +470,7 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	      }
 	    while (*rp >= '0' && *rp <= '9');
 
-	    if (__localtime_r (&secs, tm) == NULL)
+	    if (localtime_r (&secs, tm) == NULL)
 	      /* Error in function.  */
 	      return NULL;
 	  }
@@ -238,8 +479,28 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	  get_number (0, 61);
 	  tm->tm_sec = val;
 	  break;
+	case 'X':
+#ifdef _NL_CURRENT
+	  if (*decided != raw)
+	    {
+	      if (!recursive (_NL_CURRENT (LC_TIME, T_FMT)))
+		{
+		  if (*decided == loc)
+		    return NULL;
+		}
+	      else
+		{
+		  if (strcmp (_NL_CURRENT (LC_TIME, T_FMT), HERE_T_FMT))
+		    *decided = loc;
+		  break;
+		}
+	      *decided = raw;
+	    }
+#endif
+	  /* Fall through.  */
 	case 'T':
-	  recursive ("%H:%M:%S");
+	  if (!recursive (HERE_T_FMT))
+	    return NULL;
 	  break;
 	case 'u':
 	  get_number (1, 7);
@@ -262,19 +523,14 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	case 'V':
 	case 'W':
 	  get_number (0, 53);
-	  /* XXX This cannot determine any field in TM.  */
+	  /* XXX This cannot determine any field in TM without some
+	     information.  */
 	  break;
 	case 'w':
 	  /* Match number of weekday.  */
 	  get_number (0, 6);
 	  tm->tm_wday = val;
 	  break;
-	case 'x':
-	  recursive (_NL_CURRENT (LC_TIME, D_FMT));
-	  break;
-	case 'X':
-	  recursive (_NL_CURRENT (LC_TIME, T_FMT));
-	  break;
 	case 'y':
 	  /* Match year within century.  */
 	  get_number (0, 99);
@@ -289,11 +545,35 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	  /* XXX How to handle this?  */
 	  break;
 	case 'E':
+#ifdef _NL_CURRENT
 	  switch (*fmt++)
 	    {
 	    case 'c':
 	      /* Match locale's alternate date and time format.  */
-	      recursive (_NL_CURRENT (LC_TIME, ERA_D_T_FMT));
+	      if (*decided != raw)
+		{
+		  const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT);
+
+		  if (*fmt == '\0')
+		    fmt = _NL_CURRENT (LC_TIME, D_T_FMT);
+
+		  if (!recursive (fmt))
+		    {
+		      if (*decided == loc)
+			return NULL;
+		    }
+		  else
+		    {
+		      if (strcmp (fmt, HERE_D_T_FMT))
+			*decided = loc;
+		      break;
+		    }
+		  *decided = raw;
+		}
+	      /* The C locale has no era information, so use the
+		 normal representation.  */
+	      if (!recursive (HERE_D_T_FMT))
+		return NULL;
 	      break;
 	    case 'C':
 	    case 'y':
@@ -301,20 +581,70 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	      /* Match name of base year in locale's alternate
 		 representation.  */
 	      /* XXX This is currently not implemented.  It should
-		 use the value _NL_CURRENT (LC_TIME, ERA) but POSIX
-		 leaves this implementation defined and we haven't
-		 figured out how to do it yet.  */
+		 use the value _NL_CURRENT (LC_TIME, ERA).  */
 	      break;
 	    case 'x':
-	      recursive (_NL_CURRENT (LC_TIME, ERA_D_FMT));
+	      if (*decided != raw)
+		{
+		  const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_FMT);
+
+		  if (*fmt == '\0')
+		    fmt = _NL_CURRENT (LC_TIME, D_FMT);
+
+		  if (!recursive (fmt))
+		    {
+		      if (*decided == loc)
+			return NULL;
+		    }
+		  else
+		    {
+		      if (strcmp (fmt, HERE_D_FMT))
+			*decided = loc;
+		      break;
+		    }
+		  *decided = raw;
+		}
+	      if (!recursive (HERE_D_FMT))
+		return NULL;
 	      break;
 	    case 'X':
-	      recursive (_NL_CURRENT (LC_TIME, ERA_T_FMT));
+	      if (*decided != raw)
+		{
+		  const char *fmt = _NL_CURRENT (LC_TIME, ERA_T_FMT);
+
+		  if (*fmt == '\0')
+		    fmt = _NL_CURRENT (LC_TIME, T_FMT);
+
+		  if (!recursive (fmt))
+		    {
+		      if (*decided == loc)
+			return NULL;
+		    }
+		  else
+		    {
+		      if (strcmp (fmt, HERE_T_FMT))
+			*decided = loc;
+		      break;
+		    }
+		  *decided = raw;
+		}
+	      if (!recursive (HERE_T_FMT))
+		return NULL;
 	      break;
 	    default:
 	      return NULL;
 	    }
 	  break;
+#else
+	  /* We have no information about the era format.  Just use
+	     the normal format.  */
+	  if (*fmt != 'c' && *fmt != 'C' && *fmt != 'y' && *fmt != 'Y'
+	      && *fmt != 'x' && *fmt != 'X')
+	    /* This is an illegal format.  */
+	    return NULL;
+
+	  goto start_over;
+#endif
 	case 'O':
 	  switch (*fmt++)
 	    {
@@ -357,7 +687,8 @@ strptime (const char *buf, const char *format, struct tm *tm)
 	    case 'V':
 	    case 'W':
 	      get_alt_number (0, 53);
-	      /* XXX This cannot determine any field in TM.  */
+	      /* XXX This cannot determine any field in TM without
+		 further information.  */
 	      break;
 	    case 'w':
 	      /* Match number of weekday using alternate numeric symbols.  */
@@ -382,3 +713,19 @@ strptime (const char *buf, const char *format, struct tm *tm)
 
   return (char *) rp;
 }
+
+
+char *
+strptime (buf, format, tm)
+     const char *buf;
+     const char *format;
+     struct tm *tm;
+{
+  enum locale_status decided;
+#ifdef _NL_CURRENT
+  decided = not;
+#else
+  decided = raw;
+#endif
+  return strptime_internal (buf, format, tm, &decided);
+}
diff --git a/time/test-tz.c b/time/test-tz.c
index 2e1432cf11..528aa6f7ab 100644
--- a/time/test-tz.c
+++ b/time/test-tz.c
@@ -17,7 +17,7 @@ struct {
 
 
 int
-main(int argc, char ** argv)
+main (int argc, char ** argv)
 {
   int errors = 0;
   struct tm tm;
@@ -36,8 +36,7 @@ main(int argc, char ** argv)
   for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
     {
       putenv (tests[i].env);
-      tzset ();
-      t = mktime(&tm);
+      t = mktime (&tm);
       if (t != tests[i].expected)
 	{
 	  printf ("%s: flunked test %u (expected %lu, got %lu)\n",
diff --git a/time/tzfile.c b/time/tzfile.c
index d80789d570..761ddc9539 100644
--- a/time/tzfile.c
+++ b/time/tzfile.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 92, 93, 95, 96 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 95, 96, 97 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -113,16 +113,28 @@ __tzfile_read (const char *file)
 
   if (*file != '/')
     {
-      static const char tzdir[] = TZDIR;
-      register const unsigned int len = strlen (file) + 1;
-      char *new = (char *) __alloca (sizeof (tzdir) + len);
-      memcpy (new, tzdir, sizeof(tzdir) - 1);
-      new[sizeof (tzdir) - 1] = '/';
-      memcpy (&new[sizeof (tzdir)], file, len);
+      static const char default_tzdir[] = TZDIR;
+      const char *tzdir;
+      unsigned int len, tzdir_len;
+      char *new;
+
+      tzdir = __secure_getenv ("TZDIR");
+      if (tzdir == NULL || *tzdir == '\0')
+	{
+	  tzdir = default_tzdir;
+	  tzdir_len = sizeof (default_tzdir) - 1;
+	}
+      else
+	tzdir_len = strlen (tzdir);
+      len = strlen (file) + 1;
+      new = (char *) __alloca (tzdir_len + 1 + len);
+      memcpy (new, tzdir, tzdir_len);
+      new[tzdir_len] = '/';
+      memcpy (&new[tzdir_len + 1], file, len);
       file = new;
     }
 
-  f = fopen(file, "r");
+  f = fopen (file, "r");
   if (f == NULL)
     return;
 
@@ -171,6 +183,12 @@ __tzfile_read (const char *file)
       fread(type_idxs, 1, num_transitions, f) != num_transitions)
     goto lose;
 
+  /* Check for bogus indices in the data file, so we can hereafter
+     safely use type_idxs[T] as indices into `types' and never crash.  */
+  for (i = 0; i < num_transitions; ++i)
+    if (type_idxs[i] >= num_types)
+      goto lose;
+
   if (BYTE_ORDER != BIG_ENDIAN || sizeof (time_t) != 4)
     {
       /* Decode the transition times, stored as 4-byte integers in
@@ -189,6 +207,8 @@ __tzfile_read (const char *file)
 	  fread (&types[i].isdst, 1, 1, f) != 1 ||
 	  fread (&types[i].idx, 1, 1, f) != 1)
 	goto lose;
+      if (types[i].idx >= chars) /* Bogus index in data file.  */
+	goto lose;
       types[i].offset = (long int) decode (x);
     }
 
@@ -335,6 +355,10 @@ __tzfile_default (char *std, char *dst, long int stdoff, long int dstoff)
   types[1].offset = dstoff;
   types[1].isdst = 1;
 
+  /* Reset the zone names to point to the user's names.  */
+  __tzname[0] = &zone_names[0];
+  __tzname[1] = &zone_names[stdlen];
+
   compute_tzname_max (stdlen + dstlen);
 }
 
@@ -425,7 +449,7 @@ compute_tzname_max (size_t chars)
       const char *start = p;
       while (*p != '\0')
 	++p;
-      if (p - start > __tzname_cur_max)
+      if ((size_t) (p - start) > __tzname_cur_max)
 	__tzname_cur_max = p - start;
     } while (++p < &zone_names[chars]);
 }
diff --git a/time/tzselect.ksh b/time/tzselect.ksh
index 0f0a3bb28e..33bdbc7431 100644
--- a/time/tzselect.ksh
+++ b/time/tzselect.ksh
@@ -1,4 +1,4 @@
-#! /bin/ksh
+#! @KSH@
 # Ask the user about the time zone, and output the resulting TZ value to stdout.
 # Interact with the user via stderr and stdin.
 
@@ -11,7 +11,7 @@
 # you can use either of the following free programs instead:
 #
 #	Bourne-Again shell (bash)
-#	<URL:ftp://prep.ai.mit.edu:/pub/gnu/bash-1.14.7.tar.gz>
+#	<URL:ftp://prep.ai.mit.edu:/pub/gnu/bash-2.0.tar.gz>
 #	(or any later version)
 #
 #	Public domain ksh
@@ -22,7 +22,7 @@
 # you can use either of the following free programs instead:
 #
 #	GNU awk (gawk)
-#	<URL:ftp://prep.ai.mit.edu:/pub/gnu/gawk-3.0.0.tar.gz>
+#	<URL:ftp://prep.ai.mit.edu:/pub/gnu/gawk-3.0.2.tar.gz>
 #	(or any later version)
 #
 #	mawk
@@ -32,7 +32,7 @@
 
 # Specify default values for environment variables if they are unset.
 : ${AWK=awk}
-: ${TZDIR=$(pwd)}
+: ${TZDIR=@TZDIR@}
 
 # Check for awk Posix compliance.
 ($AWK -v x=y 'BEGIN { exit 123 }') </dev/null >/dev/null 2>&1
diff --git a/time/tzset.c b/time/tzset.c
index 13360b445b..8d8be34405 100644
--- a/time/tzset.c
+++ b/time/tzset.c
@@ -108,16 +108,12 @@ __tzset_internal (always)
 
   /* Free old storage.  */
   if (tz_rules[0].name != NULL && *tz_rules[0].name != '\0')
-    {
-      free((void *) tz_rules[0].name);
-      tz_rules[0].name = NULL;
-    }
+    free((void *) tz_rules[0].name);
   if (tz_rules[1].name != NULL && *tz_rules[1].name != '\0' &&
       tz_rules[1].name != tz_rules[0].name)
-    {
-      free((void *) tz_rules[1].name);
-      tz_rules[1].name = NULL;
-    }
+    free((void *) tz_rules[1].name);
+  tz_rules[0].name = NULL;
+  tz_rules[1].name = NULL;
 
   /* Save the value of `tz'.  */
   if (old_tz != NULL)
@@ -234,6 +230,9 @@ __tzset_internal (always)
 	  tz += l;
 	}
     }
+  else
+    /* There is no DST.  */
+    tz_rules[1].name = tz_rules[0].name;
 
   /* Figure out the DST offset from GMT.  */
   if (*tz == '-' || *tz == '+')