Update.

	* time/Makefile (tests): Add tst-strptime.
	* time/tst-strptime.c: New file.
	* time/strptime.c: Correct bugs in weekday and yearday computation.

1998-12-14  Ulrich Drepper  <drepper@cygnus.com>

3 files changed, 79 insertions, 6 deletions

diff --git a/time/Makefile b/time/Makefile
index 80aff61e99..7e45eaa8a5 100644
--- a/time/Makefile
+++ b/time/Makefile
@@ -30,7 +30,7 @@ routines := offtime asctime clock ctime ctime_r difftime \
 	    stime dysize timegm ftime			 \
 	    strptime getdate strfxtime
 
-tests	:= test_time clocktest tst-posixtz
+tests	:= test_time clocktest tst-posixtz tst-strptime
 
 include ../Rules
 
diff --git a/time/strptime.c b/time/strptime.c
index d85dbfac2b..315af83980 100644
--- a/time/strptime.c
+++ b/time/strptime.c
@@ -206,21 +206,23 @@ day_of_the_week (struct tm *tm)
   /* We know that January 1st 1970 was a Thursday (= 4).  Compute the
      the difference between this data in the one on TM and so determine
      the weekday.  */
-  int corr_year = tm->tm_mon >= 2 ? tm->tm_year : tm->tm_year - 1;
+  int corr_year = 1900 + tm->tm_year - (tm->tm_mon < 2);
   int wday = (-473
-	      + (365 * (tm->tm_year - 1970))
+	      + (365 * (tm->tm_year - 70))
 	      + (corr_year / 4)
 	      - ((corr_year / 4) / 25) + ((corr_year / 4) % 25 < 0)
 	      + (((corr_year / 4) / 25) / 4)
 	      + __mon_yday[0][tm->tm_mon]
-	      + tm->tm_mday);
-  tm->tm_wday = wday;
+	      + tm->tm_mday - 1);
+  tm->tm_wday = wday % 7;
 }
 
+/* Compute the day of the year.  */
 static void
 day_of_the_year (struct tm *tm)
 {
-  tm->tm_yday = __mon_yday[__isleap (tm->tm_year)][tm->tm_mon] + tm->tm_mday;
+  tm->tm_yday = (__mon_yday[__isleap (1900 + tm->tm_year)][tm->tm_mon]
+		 + (tm->tm_mday - 1));
 }
 
 static char *
diff --git a/time/tst-strptime.c b/time/tst-strptime.c
new file mode 100644
index 0000000000..52a7054475
--- /dev/null
+++ b/time/tst-strptime.c
@@ -0,0 +1,71 @@
+/* Test for strptime.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   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.
+
+   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.  */
+
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+
+static const struct
+{
+  const char *input;
+  const char *format;
+  int wday;
+  int yday;
+} day_tests[] =
+{
+  { "2000-01-01", "%Y-%m-%d", 6, 0 },
+  { "03/03/00", "%D", 5, 62 },
+  { "9/9/99", "%x", 4, 251 },
+};
+
+
+int
+main (int argc, char *argv[])
+{
+  struct tm tm;
+  int i;
+  int result = 0;
+
+  for (i = 0; i < sizeof (day_tests) / sizeof (day_tests[0]); ++i)
+    {
+      memset (&tm, '\0', sizeof (tm));
+
+      if (*strptime (day_tests[i].input, day_tests[i].format, &tm) != '\0')
+	{
+	  printf ("not all of `%s' read\n", day_tests[i].input);
+	  result = 1;
+	}
+      if (tm.tm_wday != day_tests[i].wday)
+	{
+	  printf ("weekday for `%s' incorrect: %d instead of %d\n",
+		  day_tests[i].input, tm.tm_wday, day_tests[i].wday);
+	  result = 1;
+	}
+      if (tm.tm_yday != day_tests[i].yday)
+	{
+	  printf ("yearday for `%s' incorrect: %d instead of %d\n",
+		  day_tests[i].input, tm.tm_yday, day_tests[i].yday);
+	  result = 1;
+	}
+    }
+
+  return result;
+}