Sync with the latest Gnulib code (177f525)

Signed-off-by: Thomas Guyot-Sionnest <dermoth@aei.ca>

1 files changed, 191 insertions, 187 deletions

diff --git a/gl/mktime.c b/gl/mktime.c
index 0f30d43f..b0324b82 100644
--- a/gl/mktime.c
+++ b/gl/mktime.c
@@ -1,5 +1,5 @@
 /* Convert a `struct tm' to a time_t value.
-   Copyright (C) 1993-1999, 2002-2005, 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 1993-1999, 2002-2007, 2009-2010 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Paul Eggert <eggert@twinsun.com>.
 
@@ -36,7 +36,7 @@
 
 #include <limits.h>
 
-#include <string.h>		/* For the real memcpy prototype.  */
+#include <string.h>             /* For the real memcpy prototype.  */
 
 #if DEBUG
 # include <stdio.h>
@@ -55,9 +55,9 @@
    implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift
    right in the usual way when A < 0, so SHR falls back on division if
    ordinary A >> B doesn't seem to be the usual signed shift.  */
-#define SHR(a, b)	\
-  (-1 >> 1 == -1	\
-   ? (a) >> (b)		\
+#define SHR(a, b)       \
+  (-1 >> 1 == -1        \
+   ? (a) >> (b)         \
    : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0))
 
 /* The extra casts in the following macros work around compiler bugs,
@@ -84,14 +84,14 @@
    your host.  */
 #define TYPE_MINIMUM(t) \
   ((t) (! TYPE_SIGNED (t) \
-	? (t) 0 \
-	: TYPE_SIGNED_MAGNITUDE (t) \
-	? ~ (t) 0 \
-	: ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)))
+        ? (t) 0 \
+        : TYPE_SIGNED_MAGNITUDE (t) \
+        ? ~ (t) 0 \
+        : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)))
 #define TYPE_MAXIMUM(t) \
   ((t) (! TYPE_SIGNED (t) \
-	? (t) -1 \
-	: ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))))
+        ? (t) -1 \
+        : ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))))
 
 #ifndef TIME_T_MIN
 # define TIME_T_MIN TYPE_MINIMUM (time_t)
@@ -123,7 +123,7 @@ leapyear (long int year)
   return
     ((year & 3) == 0
      && (year % 100 != 0
-	 || ((year / 100) & 3) == (- (TM_YEAR_BASE / 100) & 3)));
+         || ((year / 100) & 3) == (- (TM_YEAR_BASE / 100) & 3)));
 }
 
 /* How many days come before each month (0-12).  */
@@ -147,6 +147,7 @@ const unsigned short int __mon_yday[2][13] =
 # undef __localtime_r
 # define __localtime_r localtime_r
 # define __mktime_internal mktime_internal
+# include "mktime-internal.h"
 #endif
 
 /* Return an integer value measuring (YEAR1-YDAY1 HOUR1:MIN1:SEC1) -
@@ -162,11 +163,14 @@ const unsigned short int __mon_yday[2][13] =
 
 static inline time_t
 ydhms_diff (long int year1, long int yday1, int hour1, int min1, int sec1,
-	    int year0, int yday0, int hour0, int min0, int sec0)
+            int year0, int yday0, int hour0, int min0, int sec0)
 {
   verify (C99_integer_division, -1 / 2 == 0);
+#if 0 /* This assertion fails on 32-bit systems with 64-bit time_t, such as
+         NetBSD 5 on i386.  */
   verify (long_int_year_and_yday_are_wide_enough,
-	  INT_MAX <= LONG_MAX / 2 || TIME_T_MAX <= UINT_MAX);
+          INT_MAX <= LONG_MAX / 2 || TIME_T_MAX <= UINT_MAX);
+#endif
 
   /* Compute intervening leap days correctly even if year is negative.
      Take care to avoid integer overflow here.  */
@@ -198,16 +202,16 @@ ydhms_diff (long int year1, long int yday1, int hour1, int min1, int sec1,
    yield a value equal to *T.  */
 static time_t
 guess_time_tm (long int year, long int yday, int hour, int min, int sec,
-	       const time_t *t, const struct tm *tp)
+               const time_t *t, const struct tm *tp)
 {
   if (tp)
     {
       time_t d = ydhms_diff (year, yday, hour, min, sec,
-			     tp->tm_year, tp->tm_yday,
-			     tp->tm_hour, tp->tm_min, tp->tm_sec);
+                             tp->tm_year, tp->tm_yday,
+                             tp->tm_hour, tp->tm_min, tp->tm_sec);
       time_t t1 = *t + d;
       if ((t1 < *t) == (TYPE_SIGNED (time_t) ? d < 0 : TIME_T_MAX / 2 < d))
-	return t1;
+        return t1;
     }
 
   /* Overflow occurred one way or another.  Return the nearest result
@@ -216,8 +220,8 @@ guess_time_tm (long int year, long int yday, int hour, int min, int sec,
      match; and don't oscillate between two values, as that would
      confuse the spring-forward gap detector.  */
   return (*t < TIME_T_MIDPOINT
-	  ? (*t <= TIME_T_MIN + 1 ? *t + 1 : TIME_T_MIN)
-	  : (TIME_T_MAX - 1 <= *t ? *t - 1 : TIME_T_MAX));
+          ? (*t <= TIME_T_MIN + 1 ? *t + 1 : TIME_T_MIN)
+          : (TIME_T_MAX - 1 <= *t ? *t - 1 : TIME_T_MAX));
 }
 
 /* Use CONVERT to convert *T to a broken down time in *TP.
@@ -225,7 +229,7 @@ guess_time_tm (long int year, long int yday, int hour, int min, int sec,
    it is the nearest in-range value and then convert that.  */
 static struct tm *
 ranged_convert (struct tm *(*convert) (const time_t *, struct tm *),
-		time_t *t, struct tm *tp)
+                time_t *t, struct tm *tp)
 {
   struct tm *r = convert (t, tp);
 
@@ -235,27 +239,27 @@ ranged_convert (struct tm *(*convert) (const time_t *, struct tm *),
       time_t ok = 0;
 
       /* BAD is a known unconvertible time_t, and OK is a known good one.
-	 Use binary search to narrow the range between BAD and OK until
-	 they differ by 1.  */
+         Use binary search to narrow the range between BAD and OK until
+         they differ by 1.  */
       while (bad != ok + (bad < 0 ? -1 : 1))
-	{
-	  time_t mid = *t = (bad < 0
-			     ? bad + ((ok - bad) >> 1)
-			     : ok + ((bad - ok) >> 1));
-	  r = convert (t, tp);
-	  if (r)
-	    ok = mid;
-	  else
-	    bad = mid;
-	}
+        {
+          time_t mid = *t = (bad < 0
+                             ? bad + ((ok - bad) >> 1)
+                             : ok + ((bad - ok) >> 1));
+          r = convert (t, tp);
+          if (r)
+            ok = mid;
+          else
+            bad = mid;
+        }
 
       if (!r && ok)
-	{
-	  /* The last conversion attempt failed;
-	     revert to the most recent successful attempt.  */
-	  *t = ok;
-	  r = convert (t, tp);
-	}
+        {
+          /* The last conversion attempt failed;
+             revert to the most recent successful attempt.  */
+          *t = ok;
+          r = convert (t, tp);
+        }
     }
 
   return r;
@@ -270,8 +274,8 @@ ranged_convert (struct tm *(*convert) (const time_t *, struct tm *),
    This function is external because it is used also by timegm.c.  */
 time_t
 __mktime_internal (struct tm *tp,
-		   struct tm *(*convert) (const time_t *, struct tm *),
-		   time_t *offset)
+                   struct tm *(*convert) (const time_t *, struct tm *),
+                   time_t *offset)
 {
   time_t t, gt, t0, t1, t2;
   struct tm tm;
@@ -292,7 +296,7 @@ __mktime_internal (struct tm *tp,
   int year_requested = tp->tm_year;
   /* Normalize the value.  */
   int isdst = ((tp->tm_isdst >> (8 * sizeof (tp->tm_isdst) - 1))
-	       | (tp->tm_isdst != 0));
+               | (tp->tm_isdst != 0));
 
   /* 1 if the previous probe was DST.  */
   int dst2;
@@ -312,8 +316,8 @@ __mktime_internal (struct tm *tp,
   /* Calculate day of year from year, month, and day of month.
      The result need not be in range.  */
   int mon_yday = ((__mon_yday[leapyear (year)]
-		   [mon_remainder + 12 * negative_mon_remainder])
-		  - 1);
+                   [mon_remainder + 12 * negative_mon_remainder])
+                  - 1);
   long int lmday = mday;
   long int yday = mon_yday + lmday;
 
@@ -324,33 +328,33 @@ __mktime_internal (struct tm *tp,
   if (LEAP_SECONDS_POSSIBLE)
     {
       /* Handle out-of-range seconds specially,
-	 since ydhms_tm_diff assumes every minute has 60 seconds.  */
+         since ydhms_tm_diff assumes every minute has 60 seconds.  */
       if (sec < 0)
-	sec = 0;
+        sec = 0;
       if (59 < sec)
-	sec = 59;
+        sec = 59;
     }
 
   /* Invert CONVERT by probing.  First assume the same offset as last
      time.  */
 
   t0 = ydhms_diff (year, yday, hour, min, sec,
-		   EPOCH_YEAR - TM_YEAR_BASE, 0, 0, 0, - guessed_offset);
+                   EPOCH_YEAR - TM_YEAR_BASE, 0, 0, 0, - guessed_offset);
 
   if (TIME_T_MAX / INT_MAX / 366 / 24 / 60 / 60 < 3)
     {
       /* time_t isn't large enough to rule out overflows, so check
-	 for major overflows.  A gross check suffices, since if t0
-	 has overflowed, it is off by a multiple of TIME_T_MAX -
-	 TIME_T_MIN + 1.  So ignore any component of the difference
-	 that is bounded by a small value.  */
+         for major overflows.  A gross check suffices, since if t0
+         has overflowed, it is off by a multiple of TIME_T_MAX -
+         TIME_T_MIN + 1.  So ignore any component of the difference
+         that is bounded by a small value.  */
 
       /* Approximate log base 2 of the number of time units per
-	 biennium.  A biennium is 2 years; use this unit instead of
-	 years to avoid integer overflow.  For example, 2 average
-	 Gregorian years are 2 * 365.2425 * 24 * 60 * 60 seconds,
-	 which is 63113904 seconds, and rint (log2 (63113904)) is
-	 26.  */
+         biennium.  A biennium is 2 years; use this unit instead of
+         years to avoid integer overflow.  For example, 2 average
+         Gregorian years are 2 * 365.2425 * 24 * 60 * 60 seconds,
+         which is 63113904 seconds, and rint (log2 (63113904)) is
+         26.  */
       int ALOG2_SECONDS_PER_BIENNIUM = 26;
       int ALOG2_MINUTES_PER_BIENNIUM = 20;
       int ALOG2_HOURS_PER_BIENNIUM = 14;
@@ -358,64 +362,64 @@ __mktime_internal (struct tm *tp,
       int LOG2_YEARS_PER_BIENNIUM = 1;
 
       int approx_requested_biennia =
-	(SHR (year_requested, LOG2_YEARS_PER_BIENNIUM)
-	 - SHR (EPOCH_YEAR - TM_YEAR_BASE, LOG2_YEARS_PER_BIENNIUM)
-	 + SHR (mday, ALOG2_DAYS_PER_BIENNIUM)
-	 + SHR (hour, ALOG2_HOURS_PER_BIENNIUM)
-	 + SHR (min, ALOG2_MINUTES_PER_BIENNIUM)
-	 + (LEAP_SECONDS_POSSIBLE
-	    ? 0
-	    : SHR (sec, ALOG2_SECONDS_PER_BIENNIUM)));
+        (SHR (year_requested, LOG2_YEARS_PER_BIENNIUM)
+         - SHR (EPOCH_YEAR - TM_YEAR_BASE, LOG2_YEARS_PER_BIENNIUM)
+         + SHR (mday, ALOG2_DAYS_PER_BIENNIUM)
+         + SHR (hour, ALOG2_HOURS_PER_BIENNIUM)
+         + SHR (min, ALOG2_MINUTES_PER_BIENNIUM)
+         + (LEAP_SECONDS_POSSIBLE
+            ? 0
+            : SHR (sec, ALOG2_SECONDS_PER_BIENNIUM)));
 
       int approx_biennia = SHR (t0, ALOG2_SECONDS_PER_BIENNIUM);
       int diff = approx_biennia - approx_requested_biennia;
       int abs_diff = diff < 0 ? - diff : diff;
 
       /* IRIX 4.0.5 cc miscaculates TIME_T_MIN / 3: it erroneously
-	 gives a positive value of 715827882.  Setting a variable
-	 first then doing math on it seems to work.
-	 (ghazi@caip.rutgers.edu) */
+         gives a positive value of 715827882.  Setting a variable
+         first then doing math on it seems to work.
+         (ghazi@caip.rutgers.edu) */
       time_t time_t_max = TIME_T_MAX;
       time_t time_t_min = TIME_T_MIN;
       time_t overflow_threshold =
-	(time_t_max / 3 - time_t_min / 3) >> ALOG2_SECONDS_PER_BIENNIUM;
+        (time_t_max / 3 - time_t_min / 3) >> ALOG2_SECONDS_PER_BIENNIUM;
 
       if (overflow_threshold < abs_diff)
-	{
-	  /* Overflow occurred.  Try repairing it; this might work if
-	     the time zone offset is enough to undo the overflow.  */
-	  time_t repaired_t0 = -1 - t0;
-	  approx_biennia = SHR (repaired_t0, ALOG2_SECONDS_PER_BIENNIUM);
-	  diff = approx_biennia - approx_requested_biennia;
-	  abs_diff = diff < 0 ? - diff : diff;
-	  if (overflow_threshold < abs_diff)
-	    return -1;
-	  guessed_offset += repaired_t0 - t0;
-	  t0 = repaired_t0;
-	}
+        {
+          /* Overflow occurred.  Try repairing it; this might work if
+             the time zone offset is enough to undo the overflow.  */
+          time_t repaired_t0 = -1 - t0;
+          approx_biennia = SHR (repaired_t0, ALOG2_SECONDS_PER_BIENNIUM);
+          diff = approx_biennia - approx_requested_biennia;
+          abs_diff = diff < 0 ? - diff : diff;
+          if (overflow_threshold < abs_diff)
+            return -1;
+          guessed_offset += repaired_t0 - t0;
+          t0 = repaired_t0;
+        }
     }
 
   /* Repeatedly use the error to improve the guess.  */
 
   for (t = t1 = t2 = t0, dst2 = 0;
        (gt = guess_time_tm (year, yday, hour, min, sec, &t,
-			    ranged_convert (convert, &t, &tm)),
-	t != gt);
+                            ranged_convert (convert, &t, &tm)),
+        t != gt);
        t1 = t2, t2 = t, t = gt, dst2 = tm.tm_isdst != 0)
     if (t == t1 && t != t2
-	&& (tm.tm_isdst < 0
-	    || (isdst < 0
-		? dst2 <= (tm.tm_isdst != 0)
-		: (isdst != 0) != (tm.tm_isdst != 0))))
+        && (tm.tm_isdst < 0
+            || (isdst < 0
+                ? dst2 <= (tm.tm_isdst != 0)
+                : (isdst != 0) != (tm.tm_isdst != 0))))
       /* We can't possibly find a match, as we are oscillating
-	 between two values.  The requested time probably falls
-	 within a spring-forward gap of size GT - T.  Follow the common
-	 practice in this case, which is to return a time that is GT - T
-	 away from the requested time, preferring a time whose
-	 tm_isdst differs from the requested value.  (If no tm_isdst
-	 was requested and only one of the two values has a nonzero
-	 tm_isdst, prefer that value.)  In practice, this is more
-	 useful than returning -1.  */
+         between two values.  The requested time probably falls
+         within a spring-forward gap of size GT - T.  Follow the common
+         practice in this case, which is to return a time that is GT - T
+         away from the requested time, preferring a time whose
+         tm_isdst differs from the requested value.  (If no tm_isdst
+         was requested and only one of the two values has a nonzero
+         tm_isdst, prefer that value.)  In practice, this is more
+         useful than returning -1.  */
       goto offset_found;
     else if (--remaining_probes == 0)
       return -1;
@@ -425,52 +429,52 @@ __mktime_internal (struct tm *tp,
   if (isdst != tm.tm_isdst && 0 <= isdst && 0 <= tm.tm_isdst)
     {
       /* tm.tm_isdst has the wrong value.  Look for a neighboring
-	 time with the right value, and use its UTC offset.
+         time with the right value, and use its UTC offset.
 
-	 Heuristic: probe the adjacent timestamps in both directions,
-	 looking for the desired isdst.  This should work for all real
-	 time zone histories in the tz database.  */
+         Heuristic: probe the adjacent timestamps in both directions,
+         looking for the desired isdst.  This should work for all real
+         time zone histories in the tz database.  */
 
       /* Distance between probes when looking for a DST boundary.  In
-	 tzdata2003a, the shortest period of DST is 601200 seconds
-	 (e.g., America/Recife starting 2000-10-08 01:00), and the
-	 shortest period of non-DST surrounded by DST is 694800
-	 seconds (Africa/Tunis starting 1943-04-17 01:00).  Use the
-	 minimum of these two values, so we don't miss these short
-	 periods when probing.  */
+         tzdata2003a, the shortest period of DST is 601200 seconds
+         (e.g., America/Recife starting 2000-10-08 01:00), and the
+         shortest period of non-DST surrounded by DST is 694800
+         seconds (Africa/Tunis starting 1943-04-17 01:00).  Use the
+         minimum of these two values, so we don't miss these short
+         periods when probing.  */
       int stride = 601200;
 
       /* The longest period of DST in tzdata2003a is 536454000 seconds
-	 (e.g., America/Jujuy starting 1946-10-01 01:00).  The longest
-	 period of non-DST is much longer, but it makes no real sense
-	 to search for more than a year of non-DST, so use the DST
-	 max.  */
+         (e.g., America/Jujuy starting 1946-10-01 01:00).  The longest
+         period of non-DST is much longer, but it makes no real sense
+         to search for more than a year of non-DST, so use the DST
+         max.  */
       int duration_max = 536454000;
 
       /* Search in both directions, so the maximum distance is half
-	 the duration; add the stride to avoid off-by-1 problems.  */
+         the duration; add the stride to avoid off-by-1 problems.  */
       int delta_bound = duration_max / 2 + stride;
 
       int delta, direction;
 
       for (delta = stride; delta < delta_bound; delta += stride)
-	for (direction = -1; direction <= 1; direction += 2)
-	  {
-	    time_t ot = t + delta * direction;
-	    if ((ot < t) == (direction < 0))
-	      {
-		struct tm otm;
-		ranged_convert (convert, &ot, &otm);
-		if (otm.tm_isdst == isdst)
-		  {
-		    /* We found the desired tm_isdst.
-		       Extrapolate back to the desired time.  */
-		    t = guess_time_tm (year, yday, hour, min, sec, &ot, &otm);
-		    ranged_convert (convert, &t, &tm);
-		    goto offset_found;
-		  }
-	      }
-	  }
+        for (direction = -1; direction <= 1; direction += 2)
+          {
+            time_t ot = t + delta * direction;
+            if ((ot < t) == (direction < 0))
+              {
+                struct tm otm;
+                ranged_convert (convert, &ot, &otm);
+                if (otm.tm_isdst == isdst)
+                  {
+                    /* We found the desired tm_isdst.
+                       Extrapolate back to the desired time.  */
+                    t = guess_time_tm (year, yday, hour, min, sec, &ot, &otm);
+                    ranged_convert (convert, &t, &tm);
+                    goto offset_found;
+                  }
+              }
+          }
     }
 
  offset_found:
@@ -479,14 +483,14 @@ __mktime_internal (struct tm *tp,
   if (LEAP_SECONDS_POSSIBLE && sec_requested != tm.tm_sec)
     {
       /* Adjust time to reflect the tm_sec requested, not the normalized value.
-	 Also, repair any damage from a false match due to a leap second.  */
+         Also, repair any damage from a false match due to a leap second.  */
       int sec_adjustment = (sec == 0 && tm.tm_sec == 60) - sec;
       t1 = t + sec_requested;
       t2 = t1 + sec_adjustment;
       if (((t1 < t) != (sec_requested < 0))
-	  | ((t2 < t1) != (sec_adjustment < 0))
-	  | ! convert (&t2, &tm))
-	return -1;
+          | ((t2 < t1) != (sec_adjustment < 0))
+          | ! convert (&t2, &tm))
+        return -1;
       t = t2;
     }
 
@@ -530,13 +534,13 @@ static int
 not_equal_tm (const struct tm *a, const struct tm *b)
 {
   return ((a->tm_sec ^ b->tm_sec)
-	  | (a->tm_min ^ b->tm_min)
-	  | (a->tm_hour ^ b->tm_hour)
-	  | (a->tm_mday ^ b->tm_mday)
-	  | (a->tm_mon ^ b->tm_mon)
-	  | (a->tm_year ^ b->tm_year)
-	  | (a->tm_yday ^ b->tm_yday)
-	  | (a->tm_isdst ^ b->tm_isdst));
+          | (a->tm_min ^ b->tm_min)
+          | (a->tm_hour ^ b->tm_hour)
+          | (a->tm_mday ^ b->tm_mday)
+          | (a->tm_mon ^ b->tm_mon)
+          | (a->tm_year ^ b->tm_year)
+          | (a->tm_yday ^ b->tm_yday)
+          | (a->tm_isdst ^ b->tm_isdst));
 }
 
 static void
@@ -544,9 +548,9 @@ print_tm (const struct tm *tp)
 {
   if (tp)
     printf ("%04d-%02d-%02d %02d:%02d:%02d yday %03d wday %d isdst %d",
-	    tp->tm_year + TM_YEAR_BASE, tp->tm_mon + 1, tp->tm_mday,
-	    tp->tm_hour, tp->tm_min, tp->tm_sec,
-	    tp->tm_yday, tp->tm_wday, tp->tm_isdst);
+            tp->tm_year + TM_YEAR_BASE, tp->tm_mon + 1, tp->tm_mday,
+            tp->tm_hour, tp->tm_min, tp->tm_sec,
+            tp->tm_yday, tp->tm_wday, tp->tm_isdst);
   else
     printf ("0");
 }
@@ -578,11 +582,11 @@ main (int argc, char **argv)
 
   if ((argc == 3 || argc == 4)
       && (sscanf (argv[1], "%d-%d-%d%c",
-		  &tm.tm_year, &tm.tm_mon, &tm.tm_mday, &trailer)
-	  == 3)
+                  &tm.tm_year, &tm.tm_mon, &tm.tm_mday, &trailer)
+          == 3)
       && (sscanf (argv[2], "%d:%d:%d%c",
-		  &tm.tm_hour, &tm.tm_min, &tm.tm_sec, &trailer)
-	  == 3))
+                  &tm.tm_hour, &tm.tm_min, &tm.tm_sec, &trailer)
+          == 3))
     {
       tm.tm_year -= TM_YEAR_BASE;
       tm.tm_mon--;
@@ -591,10 +595,10 @@ main (int argc, char **argv)
       tl = mktime (&tmk);
       lt = localtime (&tl);
       if (lt)
-	{
-	  tml = *lt;
-	  lt = &tml;
-	}
+        {
+          tml = *lt;
+          lt = &tml;
+        }
       printf ("mktime returns %ld == ", (long int) tl);
       print_tm (&tmk);
       printf ("\n");
@@ -607,51 +611,51 @@ main (int argc, char **argv)
       time_t to = atol (argv[3]);
 
       if (argc == 4)
-	for (tl = from; by < 0 ? to <= tl : tl <= to; tl = tl1)
-	  {
-	    lt = localtime (&tl);
-	    if (lt)
-	      {
-		tmk = tml = *lt;
-		tk = mktime (&tmk);
-		status |= check_result (tk, tmk, tl, &tml);
-	      }
-	    else
-	      {
-		printf ("localtime (%ld) yields 0\n", (long int) tl);
-		status = 1;
-	      }
-	    tl1 = tl + by;
-	    if ((tl1 < tl) != (by < 0))
-	      break;
-	  }
+        for (tl = from; by < 0 ? to <= tl : tl <= to; tl = tl1)
+          {
+            lt = localtime (&tl);
+            if (lt)
+              {
+                tmk = tml = *lt;
+                tk = mktime (&tmk);
+                status |= check_result (tk, tmk, tl, &tml);
+              }
+            else
+              {
+                printf ("localtime (%ld) yields 0\n", (long int) tl);
+                status = 1;
+              }
+            tl1 = tl + by;
+            if ((tl1 < tl) != (by < 0))
+              break;
+          }
       else
-	for (tl = from; by < 0 ? to <= tl : tl <= to; tl = tl1)
-	  {
-	    /* Null benchmark.  */
-	    lt = localtime (&tl);
-	    if (lt)
-	      {
-		tmk = tml = *lt;
-		tk = tl;
-		status |= check_result (tk, tmk, tl, &tml);
-	      }
-	    else
-	      {
-		printf ("localtime (%ld) yields 0\n", (long int) tl);
-		status = 1;
-	      }
-	    tl1 = tl + by;
-	    if ((tl1 < tl) != (by < 0))
-	      break;
-	  }
+        for (tl = from; by < 0 ? to <= tl : tl <= to; tl = tl1)
+          {
+            /* Null benchmark.  */
+            lt = localtime (&tl);
+            if (lt)
+              {
+                tmk = tml = *lt;
+                tk = tl;
+                status |= check_result (tk, tmk, tl, &tml);
+              }
+            else
+              {
+                printf ("localtime (%ld) yields 0\n", (long int) tl);
+                status = 1;
+              }
+            tl1 = tl + by;
+            if ((tl1 < tl) != (by < 0))
+              break;
+          }
     }
   else
     printf ("Usage:\
 \t%s YYYY-MM-DD HH:MM:SS [ISDST] # Test given time.\n\
 \t%s FROM BY TO # Test values FROM, FROM+BY, ..., TO.\n\
 \t%s FROM BY TO - # Do not test those values (for benchmark).\n",
-	    argv[0], argv[0], argv[0]);
+            argv[0], argv[0], argv[0]);
 
   return status;
 }