Update.

1999-04-28  Ulrich Drepper  <drepper@cygnus.com>

	* argp/argp-ba.c (argp_program_bug_address): Don't initialize with 0.
	* argp/argp-parse.c (_argp_hang): Likewise.
	* argp/argp-pv.c (argp_program_version): Likewise.
	* argp/argp-pvh.c (argp_program_version_hook): Likewise.
	* inet/ether_hton.c (ether_hton, startp): Likewise.
	* inet/ether_ntoh.c (ether_ntoh, startp): Likewise.
	* inet/getnetgrent_r.c (setup, startp): Likewise.
	* intl/loadmsgcat.c (_nl_msg_cat_cntr): Likewise.
	* intl/localealias.c (string_space, string_space_act, string_space_max,
	nmap, maxmap): Likewise.
	* libio/iopopen.c (proc_file_chain): Likewise.
	* libio/oldiopopen.c (old_proc_file_chain): Likewise.
	* locale/lc-collate.c (__collate_table, __collate_extra,
	__collate_element_hash, __collate_element_strings,
	__collate_element_values): Likewise.
	* malloc/mcheck.c (mcheck_used): Likewise.
	* malloc/mtrace.c (added_atexit_handler): Likewise.
	* malloc/set-freeres.c (already_called): Likewise.
	* misc/getpass.c (getpass) [buf, bufsize]: Likewise.
	* misc/syslog.c (LogStat, LogTag): Likewise.
	* nss/XXX-lookup.c (DATABASE_NAME_SYMBOL): Likewise.
	* nss/getXXbyYY_r.c (startp): Likewise.
	* posix/getopt.c (optarg, __getopt_initialized): Likewise.
	* posix/regex.c (init_syntax_once) [done]: Likewise.
	(debug): Likewise.
	* string/strfry.c (init): Likewise.
	* sunrpc/svc_run.c (svc_top): Likewise.
	* posix/euidaccess.c (have_ids): Likewise.
	* sysdeps/unix/sysv/linux/poll.c (must_emulate): Likewise.
	* sysdeps/unix/sysv/linux/ttyname.c (__ttyname, namelen): Likewise.
	* time/getdate.c (getdate_err): Likewise.
	* time/tzfile.c (transitions, type_idxs, types, zone_names, leaps):
	Likewise.
	* time/tzset.c (old_tz, is_initialized): Likewise.

	* inet/getnameinfo.c (nrl_domainname): Rewrite to allow initialization
	of static data with zero.
	* signal/allocrtsig.c (init): Likewise.

	* string/Makefile (routines): Add strchrnul.
	* string/Versions [GLIBC_2.1.1]: Add strchrnul.
	* string/string.c: Add strchrnul prototype.
	* include/string.h: Add __strchrnul prototype.
	* sysdeps/generic/strchrnul.c: New file.
	* sysdeps/i386/strchrnul.S: New file.
	* sysdeps/i386/bits/string.c: Add strchrnul optimization.
	* sysdeps/i386/i486/bits/string.c: Likewise.
	* argp/argp-help.c (argp_args_usage): Use __strchrnul.
	* inet/ether_line.c (ether_line): Likewise.
	* nscd/nscd_conf.c (nscd_parse_file): Likewise.
	* nss/nsswitch.c (nss_parse_file): Likewise.
	* posix/execvp.c (execvp): Likewise.
	* posix/fnmatch.c (internal_fnmatch): Likewise.
	* resolv/res_hconf.c (_res_hconv_init): Likewise.
	* resolv/res_init.c (res_init): Likewise.
	* stdlib/fmtmsg.c (init): Likewise.
	* stdlib/getsubopt.c (getsubopt): Likewise.

	* catgets/catgets.c (catopen): Only allocate one memory block.
	(catclose): Only one free call necessary.

	* catgets/open_catalog.c (__open_catalog): Simplify handling of
	file descriptor.

	* ctype/ctype-extn.c: Make __toascii_l and __isascii_l alias instead
	of real functions.  Simplify _tolower and _toupper.

	* grp/initgroups.c (compat_call): Remove unnecessary use of pointer
	variable.

	* iconv/gconv.h (struct gconv_info): Change data element from pointer
	to array of size 0.
	* iconv/gconv_open.c (__gconv_open): Allocate structures accordingly.
	* iconv/gconv_close.c (__gconv_close): Don't free data.

	* iconv/gconv_conf.c (add_alias): Avoid searching in tree twice to
	insert new alias.

	* iconv/gconv_db.c (add_derivation): More efficient copying.  Check
	for error while inserting in tree.

	* include/time.h: Pretty print.

	* inet/ruserpass.c: Rewrite use of toktab to avoid string pointers
	in table and lots of relocations.
	* posix/regex.c (regerror): Rewrite use of re_error_msgid to avoid
	string pointers in table and lots of relocations.

	* intl/finddomain.c: Remove definition of strchr macro.

	* io/ftw.c (nftw_arr, ftw_arr): Make const.

	* locale/loadlocale.c (_nl_load_locale): Optimize string copying.

	* locale/localeinfo.h (_nl_category_names): Change into an array with
	fixed width char string elements.
	* locale/setlocale.c (_nl_category_names): Likewise.
	(_nl_current): Make global.
	* locale/nl_langinfo.c (nldata): Removed.  Use _nl_current now.

	* malloc/Makefile (distribute): Add stackinfo.h.
	* sysdeps/generic/stackinfo.h: New file.
	* sysdeps/i386/stackinfo.h: New file.
	* posix/execl.c: Use stackinfo.h in optimizing alloca use.
	* posix/execle.c: Likewise.
	* posix/execlp.c: Likewise.

	* nis/nis_table.c (__create_ib_request): Always use realloc.

	* posix/execvp.c (execute): Rename to script_execute and keep only
	code to execute using shell.
	(execvp): Call execv directly and only fall back on script_execute.

	* resolv/inet_net_pton.c (inet_net_pton_ipv4): Remove digits define
	and always use xdigits instead.

	* resolv/res_init.c (res_init): Use rawmemchr instead of strchr
	where appropriate.

	* stdlib/fpioconst.h (__tens): New declaration.
	(struct mp_power): Remove array, add arrayoff element.
	* stdlib/fpioconst.c: Replace definitions of _ten_p* arrays by one
	__tens array and add in _fpioconst_pow10 offsets into __tens.
	* stdio-common/printf_fp.c: Rewrite to use new __tens array.
	* stdlib/strtod.c: Likewise.

	* stdlib/a64l.c (a64l_table): Avoid unnecessary elements.

	* stdlib/exit.c: Rewrite to use __exit_funcs being as sign for end
	of the list.
	* stdlib/atexit.c (__exit_funcs): Don't initialize.

	* stdlib/fmtmsg.c (keywords): Make name element fixed width array.

	* sunrpc/clnt_perr.c: Rewrite clnt_sperrno and auth_errmsg to use
	a single and an array with offsets.

	* sunrpc/des_soft.c (partab): Make it const.

	* sunrpc/key_call.c (trytimeout, tottimeout): Make const.
	(__key_encryptsession_pk_LOCAL): Don't initialize with 0.
	(__key_decryptsession_pk_LOCAL): Likewise.
	(__key_gendes_LOCAL): Likewise.
	(MESSENGER): Mark const.
	(key_call_private_main): Don't initialize with 0.
	(use_keyenvoy): Don't initialize with 0.
	(key_call): Rewrite to reverse logic of use_doors variable.

	* sunrpc/netname.c (OPSYS): Define as array, not pointer.
	(startp): Don't initialize with zero.

	* sunrpc/openchild.c (_openchild): Make first argument const.

	* sunrpc/pmap_rmt.c (timeout): Mark const.
	* sunrpc/xcrypt.c (hex): Likewise.

	* sysdeps/unix/sysv/linux/getcwd.c: Rewrite to allow omitting
	initialization of global variables.
	* sysdeps/unix/sysv/linux/getpt.c: Likewise.
	* sysdeps/unix/sysv/linux/if_index.c: Likewise.
	* termios/tcgetsid.c: Likewise.

	* sysdeps/unix/sysv/linux/i386/dl-procinfo.h (x86_cap_flags): Change
	fxsr to osfxsr.

	* time/tzfile.c (__tzfile_read): Rewrite to allocate only one memory
	block.  Add function to free memory if wanted.
	* time/tzset.c (tzset_internal): Pass extra argument to __tzfile_read.

	* wcsmbs/wcsmbsload.c (to_wc, to_mb): Correct initializers.

	* wcsmbs/wmemset.c: Little code optimization.

3 files changed, 80 insertions, 74 deletions

diff --git a/time/getdate.c b/time/getdate.c
index c25a49d5a1..9957411fd8 100644
--- a/time/getdate.c
+++ b/time/getdate.c
@@ -1,5 +1,5 @@
 /* Convert a string representation of time to a time value.
-   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997.
 
@@ -42,7 +42,7 @@ static int check_mday (int year, int mon, int mday);
      8  invalid input specification Example: February 31 or a time is
         specified that can not be represented in a time_t (representing
 	the time in seconds since 00:00:00 UTC, January 1, 1970) */
-int getdate_err = 0;
+int getdate_err;
 
 
 /* Returns the first weekday WDAY of month MON in the year YEAR.  */
diff --git a/time/tzfile.c b/time/tzfile.c
index cfbdae6886..6681f9a66c 100644
--- a/time/tzfile.c
+++ b/time/tzfile.c
@@ -27,7 +27,7 @@
 #define	NOID
 #include <timezone/tzfile.h>
 
-int __use_tzfile = 0;
+int __use_tzfile;
 
 struct ttinfo
   {
@@ -48,15 +48,15 @@ static struct ttinfo *find_transition (time_t timer) internal_function;
 static void compute_tzname_max (size_t) internal_function;
 
 static size_t num_transitions;
-static time_t *transitions = NULL;
-static unsigned char *type_idxs = NULL;
+static time_t *transitions;
+static unsigned char *type_idxs;
 static size_t num_types;
-static struct ttinfo *types = NULL;
-static char *zone_names = NULL;
+static struct ttinfo *types;
+static char *zone_names;
 static long int rule_stdoff;
 static long int rule_dstoff;
 static size_t num_leaps;
-static struct leap *leaps = NULL;
+static struct leap *leaps;
 
 #include <endian.h>
 #include <byteswap.h>
@@ -84,7 +84,7 @@ decode (const void *ptr)
 }
 
 void
-__tzfile_read (const char *file)
+__tzfile_read (const char *file, size_t extra, char **extrap)
 {
   static const char default_tzdir[] = TZDIR;
   size_t num_isstd, num_isgmt;
@@ -92,24 +92,15 @@ __tzfile_read (const char *file)
   struct tzhead tzhead;
   size_t chars;
   register size_t i;
+  size_t total_size;
+  size_t types_idx;
+  size_t leaps_idx;
 
   __use_tzfile = 0;
 
   if (transitions != NULL)
     free ((void *) transitions);
   transitions = NULL;
-  if (type_idxs != NULL)
-    free ((void *) type_idxs);
-  type_idxs = NULL;
-  if (types != NULL)
-    free ((void *) types);
-  types = NULL;
-  if (zone_names != NULL)
-    free ((void *) zone_names);
-  zone_names = NULL;
-  if (leaps != NULL)
-    free ((void *) leaps);
-  leaps = NULL;
 
   if (file == NULL)
     /* No user specification; use the site-wide default.  */
@@ -151,7 +142,7 @@ __tzfile_read (const char *file)
       new = (char *) __alloca (tzdir_len + 1 + len);
       tmp = __mempcpy (new, tzdir, tzdir_len);
       *tmp++ = '/';
-      __mempcpy (tmp, file, len);
+      memcpy (tmp, file, len);
       file = new;
     }
 
@@ -169,41 +160,48 @@ __tzfile_read (const char *file)
   num_isstd = (size_t) decode (tzhead.tzh_ttisstdcnt);
   num_isgmt = (size_t) decode (tzhead.tzh_ttisgmtcnt);
 
-  if (num_transitions > 0)
-    {
-      transitions = (time_t *) malloc (num_transitions * sizeof (time_t));
-      if (transitions == NULL)
-	goto lose;
-      type_idxs = (unsigned char *) malloc (num_transitions);
-      if (type_idxs == NULL)
-	goto lose;
-    }
-  if (num_types > 0)
-    {
-      types = (struct ttinfo *) malloc (num_types * sizeof (struct ttinfo));
-      if (types == NULL)
-	goto lose;
-    }
-  if (chars > 0)
+  total_size = num_transitions * (sizeof (time_t) + 1);
+  total_size = ((total_size + __alignof__ (struct ttinfo) - 1)
+		& ~(__alignof__ (struct ttinfo) - 1));
+  types_idx = total_size;
+  total_size += num_types * sizeof (struct ttinfo) + chars;
+  total_size = ((total_size + __alignof__ (struct leap) - 1)
+		& ~(__alignof__ (struct leap) - 1));
+  leaps_idx = total_size;
+  total_size += num_leaps * sizeof (struct leap);
+  /* This is for the extra memory required by the caller.  */
+  total_size += extra;
+
+  transitions = (time_t *) malloc (total_size);
+  if (transitions == NULL)
+    goto lose;
+
+  type_idxs = (unsigned char *) transitions + (num_transitions
+					       * sizeof (time_t));
+  types = (struct ttinfo *) ((char *) transitions + types_idx);
+  zone_names = (char *) types + num_types * sizeof (struct ttinfo);
+  leaps = (struct leap *) ((char *) transitions + leaps_idx);
+  if (extra > 0)
+    *extrap = (char *) &leaps[num_leaps];
+
+  if (sizeof (time_t) < 4)
+    abort ();
+
+  if (sizeof (time_t) == 4)
     {
-      zone_names = (char *) malloc (chars);
-      if (zone_names == NULL)
+      if (fread_unlocked (transitions, 1, (4 + 1) * num_transitions, f)
+	  != (4 + 1) * num_transitions)
 	goto lose;
     }
-  if (num_leaps > 0)
+  else
     {
-      leaps = (struct leap *) malloc (num_leaps * sizeof (struct leap));
-      if (leaps == NULL)
+      if (fread_unlocked (transitions, 4, num_transitions, f)
+	  != num_transitions
+	  || fread_unlocked (type_idxs, 1, num_transitions, f)
+	  != num_transitions)
 	goto lose;
     }
 
-  if (sizeof (time_t) < 4)
-      abort ();
-
-  if (fread_unlocked (transitions, 4, num_transitions, f) != num_transitions
-      || fread_unlocked (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)
@@ -224,14 +222,17 @@ __tzfile_read (const char *file)
   for (i = 0; i < num_types; ++i)
     {
       unsigned char x[4];
-      if (fread_unlocked (x, 1, 4, f) != 4
-	  || fread_unlocked (&types[i].isdst, 1, 1, f) != 1
-	  || fread_unlocked (&types[i].idx, 1, 1, f) != 1)
+      int c;
+      if (fread_unlocked (x, 1, sizeof (x), f) != sizeof (x))
 	goto lose;
-      if (types[i].isdst > 1)
+      c = getc_unlocked (f);
+      if ((unsigned int) c > 1u)
 	goto lose;
-      if (types[i].idx >= chars) /* Bogus index in data file.  */
+      types[i].isdst = c;
+      c = getc_unlocked (f);
+      if ((size_t) c > chars) /* Bogus index in data file.  */
 	goto lose;
+      types[i].idx = c;
       types[i].offset = (long int) decode (x);
     }
 
@@ -354,10 +355,13 @@ void
 __tzfile_default (const char *std, const char *dst,
 		  long int stdoff, long int dstoff)
 {
-  size_t stdlen, dstlen, i;
+  size_t stdlen = strlen (std) + 1;
+  size_t dstlen = strlen (dst) + 1;
+  size_t i;
   int isdst;
+  char *cp;
 
-  __tzfile_read (TZDEFRULES);
+  __tzfile_read (TZDEFRULES, stdlen + dstlen, &cp);
   if (!__use_tzfile)
     return;
 
@@ -367,19 +371,10 @@ __tzfile_default (const char *std, const char *dst,
       return;
     }
 
-  /* Ignore the zone names read from the file.  */
-  free (zone_names);
-
-  /* Use the names the user specified.  */
-  stdlen = strlen (std) + 1;
-  dstlen = strlen (dst) + 1;
-  zone_names = malloc (stdlen + dstlen);
-  if (zone_names == NULL)
-    {
-      __use_tzfile = 0;
-      return;
-    }
-  __mempcpy (__mempcpy (zone_names, std, stdlen), dst, dstlen);
+  /* Ignore the zone names read from the file and use the given ones
+     instead.  */
+  __mempcpy (__mempcpy (cp, std, stdlen), dst, dstlen);
+  zone_names = cp;
 
   /* Now there are only two zones, regardless of what the file contained.  */
   num_types = 2;
@@ -554,3 +549,14 @@ compute_tzname_max (size_t chars)
     }
   while (++p < &zone_names[chars]);
 }
+
+/* This function is only called when we are checking for memory leaks.  */
+static void
+freeres (void)
+{
+  if (transitions != NULL)
+    free ((void *) transitions);
+}
+
+/* Make sure all allocated data is freed before exiting.  */
+text_set_element (__libc_subfreeres, freeres);
diff --git a/time/tzset.c b/time/tzset.c
index d6d1b2089a..24624fa188 100644
--- a/time/tzset.c
+++ b/time/tzset.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991,92,93,94,95,96,97,98 Free Software Foundation, Inc.
+/* Copyright (C) 1991,92,93,94,95,96,97,98,99 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
@@ -121,7 +121,7 @@ __tzstring (const char *s)
   return new->data;
 }
 
-static char *old_tz = NULL;
+static char *old_tz;
 
 /* Interpret the TZ envariable.  */
 static void
@@ -129,7 +129,7 @@ internal_function
 tzset_internal (always)
      int always;
 {
-  static int is_initialized = 0;
+  static int is_initialized;
   register const char *tz;
   register size_t l;
   char *tzbuf;
@@ -169,7 +169,7 @@ tzset_internal (always)
   old_tz = tz ? __strdup (tz) : NULL;
 
   /* Try to read a data file.  */
-  __tzfile_read (tz);
+  __tzfile_read (tz, 0, NULL);
   if (__use_tzfile)
     return;