Update.

1999-03-30  Ulrich Drepper  <drepper@cygnus.com>

	* time/tzfile.c (__tzfile_read): Process transitions from the rear.
	Minor optimization.

diff --git a/ChangeLog b/ChangeLog
index eb8a0ef..c17a9dd 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+1999-03-30  Ulrich Drepper  <drepper@cygnus.com>
+
+       * time/tzfile.c (__tzfile_read): Process transitions from the rear.
+       Minor optimization.
+
 1999-03-29  Ulrich Drepper  <drepper@cygnus.com>
 
        * elf/rtld.c (process_envvars): Do not automatically prevent lazy

diff --git a/time/tzfile.c b/time/tzfile.c
index a740731..cfbdae6 100644 (file)
--- a/time/tzfile.c
+++ b/time/tzfile.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 92, 93, 95, 96, 97, 98 Free Software Foundation, Inc.
+/* Copyright (C) 1991,92,93,95,96,97,98,99 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
@@ -284,10 +284,11 @@ __tzfile_read (const char *file)
     {
       int type = type_idxs[--i];
       int dst = types[type].isdst;
-      int idx = types[type].idx;
 
       if (__tzname[dst] == NULL)
        {
+         int idx = types[type].idx;
+
          __tzname[dst] = __tzstring (&zone_names[idx]);
 
          if (__tzname[1 - dst] != NULL)
@@ -313,14 +314,15 @@ __tzfile_read (const char *file)
     {
       int stdoff_set = 0, dstoff_set = 0;
       rule_stdoff = rule_dstoff = 0;
-      for (i = 0; i < num_transitions; ++i)
+      i = num_transitions - 1;
+      do
        {
          if (!stdoff_set && !types[type_idxs[i]].isdst)
            {
              stdoff_set = 1;
              rule_stdoff = types[type_idxs[i]].offset;
            }
-         if (!dstoff_set && types[type_idxs[i]].isdst)
+         else if (!dstoff_set && types[type_idxs[i]].isdst)
            {
              dstoff_set = 1;
              rule_dstoff = types[type_idxs[i]].offset;
@@ -328,6 +330,8 @@ __tzfile_read (const char *file)
          if (stdoff_set && dstoff_set)
            break;
        }
+      while (i-- > 0);
+
       if (!dstoff_set)
        rule_dstoff = rule_stdoff;
     }