This is a request to backport the fix of Sourceware bz4773 in RHEL 5.

In RHEL5, the short month name for November in Finnish is not recognized by strptime(). This is due to upstream bug 4773. The test case developped for that bug can be easily adapted to the Finnish locale to show the problem as reported:

$ cat tst-strptime.c 
#define _XOPEN_SOURCE
#include <locale.h>
#include <time.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>

int
main (void)
{
  if (setlocale (LC_ALL, "fi_FI.utf8") == NULL)
    {
      puts ("cannot set locale");
      return 1;
    }
  struct tm tm;
  static const char s[] = "marras";
  char *r = strptime (s, "%b", &tm);
  printf ("r = %p, r-s = %ju, tm.tm_mon = %d\n", r, (uintmax_t)(r - s), tm.tm_mon);
  return r == NULL || r - s != strlen(s) || tm.tm_mon != 10;
}
$ cc -std=gnu99 -o tst-strptime tst-strptime.c

On RHEL 5:

$ rpm -q glibc
glibc-2.5-42.el5_4.3
$ ./tst-strptime
r = 0x80485c3, r-s = 3, tm.tm_mon = 2
$ echo $?
1

On RHEL 6:

$ cc -Wall -W -pedantic -std=gnu99 -o tst-strptime tst-strptime.c 
$ ./tst-strptime 
r = 0x4007a1, r-s = 6, tm.tm_mon = 10
$ echo $?
0
$ rpm -q glibc
glibc-2.12-1.7.el6_0.3.x86_64
glibc-2.12-1.7.el6_0.3.i686

This was fixed upstream in commit f98c2d06bb4e04e59bb067b301bacf880fb72a9f. Test case was commited in 9ffe4385a8df731953e0857339ebc6dafea05570.
http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=9ffe4385a8df731953e0857339ebc6dafea05570
http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=f98c2d06bb4e04e59bb067b301bacf880fb72a9f
http://sources.redhat.com/bugzilla/show_bug.cgi?id=4773