Bring two-digit years up-to-date with POSIX requirements.

70-00 are intepreted in the 20th century; 01-69 in the
21st century.  (Yes, 2000 is the last year of the 20th
century, not the first year of the 21st.)

Submitted by:	Sergey Babkin <babkin@bellatlantic.net>

2 files changed, 12 insertions, 2 deletions

diff --git a/lib/libc/stdtime/strptime.3 b/lib/libc/stdtime/strptime.3
index ac10572..b5dedbe 100644
--- a/lib/libc/stdtime/strptime.3
+++ b/lib/libc/stdtime/strptime.3
@@ -23,7 +23,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.\" $Id: strptime.3,v 1.1 1997/08/09 15:43:54 joerg Exp $
+.\" $Id: strptime.3,v 1.2 1998/09/12 21:13:29 dt Exp $
 .\" "
 .Dd May 8, 1997
 .Dt STRPTIME 3
@@ -56,6 +56,14 @@ white space in the format string will match any amount of white space
 in the buffer.
 All conversion specifications are identical to those described in
 .Xr strftime 3 .
+.Pp
+Two-digit year values, including formats
+.Fa %d
+and 
+.Fa %D ,
+are now interpreted as beginning at 1970 per POSIX requirements.
+Years 70-99 are interpreted in the 20th century, years 00-69 in 
+the 21st century.
 .Sh RETURN VALUES
 Upon successful completion,
 .Fn strptime
diff --git a/lib/libc/stdtime/strptime.c b/lib/libc/stdtime/strptime.c
index 4c71eaa..f121d68 100644
--- a/lib/libc/stdtime/strptime.c
+++ b/lib/libc/stdtime/strptime.c
@@ -53,7 +53,7 @@
 
 #ifdef LIBC_RCS
 static const char rcsid[] =
-	"$Id: strptime.c,v 1.3 1997/08/13 13:11:53 ache Exp $";
+	"$Id: strptime.c,v 1.4 1998/09/12 21:13:29 dt Exp $";
 #endif
 
 #ifndef lint
@@ -333,6 +333,8 @@ strptime(const char *buf, const char *fmt, struct tm *tm)
 			}
 			if (c == 'Y')
 				i -= 1900;
+			if (c == 'y' && i < 70)
+				i += 100;
 			if (i < 0)
 				return 0;