>Number:         36528
>Category:       lib
>Synopsis:       strptime(3) doesn't fill in the 'tm' structure fields correctly
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jun 23 12:50:00 +0000 2007
>Originator:     Stathis Kamperis
>Release:        NetBSD 4.99.20
>Organization:
Student of Medicine, Aristotle University of Thessaloniki
>Environment:
NetBSD netbsd 4.99.20 NetBSD 4.99.20 (MYGENERIC) #1: Wed Jun 13 00:11:49 EEST 2007  root@netbsd:/usr/obj/sys/arch/i386/compile/MYGENERIC i386

>Description:
strptime(3) doesn't seem to fill in the 'tm' structure fields correctly. Specifically the tm_mday, tm_mon and tm_wday.

As far as I know, the exact behavior is manifested by OpenBSD, FreeBSD and Mac OS X as well. On the other hand, Linux and Solaris yield the expected results.

>How-To-Repeat:
Compile and run the following program. 

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

int main(void)
{
    struct tm tm;
    char *retp;

    /* Clear the tm structure */
    memset(&tm, 0, sizeof(tm));

    /* Call strptime()                                                          
       %j is the day number of the year [1,366]                                 
       %Y is the year, including the century (i.e., 1996)                       
     */
    retp = strptime("100-2007", "%j-%Y", &tm);

    /* strptime() failed */
    if (retp == NULL) {
        fprintf(stderr, "strptime() failed\n");
        exit(EXIT_FAILURE);
    }

    /* parsing failed */
    if (*retp != '\0') {
        fprintf(stderr, "parsing failed\n");
        exit(EXIT_FAILURE);
    }

    /* print tm's fields */
    printf("tm_mday = %d\n", tm.tm_mday);
    printf("tm_mon = %d\n", tm.tm_mon);
    printf("tm_year = %d\n", tm.tm_year);
    printf("tm_yday = %d\n", tm.tm_yday);
    printf("tm_wday = %d\n", tm.tm_wday);

   return EXIT_SUCCESS;
}

-------------------------------------------------------------

[stathis@netbsd ~]$ ./strptime 
tm_mday = 0
tm_mon = 0
tm_year = 107
tm_yday = 99
tm_wday = 0

[stathis@archlinux ~]$ ./strptime
tm_mday = 1
tm_mon = 3
tm_year = 107
tm_yday = 99
tm_wday = 2


tm_wday = 0




>Fix: