[Bug libc/13148] New: localtime doesn't support more than 67768036191705599 seconds

[Bug libc/13148] New: localtime doesn't support more than 67768036191705599 seconds

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13148

             Bug #: 13148
           Summary: localtime doesn't support more than 67768036191705599
                    seconds
           Product: glibc
           Version: 2.14
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper.fsp@gmail.com
        ReportedBy: hjl.tools@gmail.com
    Classification: Unclassified


On Linux/x86-64, I got

[hjl@gnu-mic-1 lfs-1]$ cat foo.c
#include <time.h>
#include <stdio.h>

static void
foo (time_t *tp)
{
  struct tm *p = localtime (tp);
  if (!p)
    printf ("localtime (0x%lx) is NULL\n", *tp);
  else
    printf ("localtime (0x%lx): year: %d\n", *tp, p->tm_year);
}
int
main ()
{
  time_t t;
  t = 67768036191705599L;
  foo (&t);
  t++;
  foo (&t);
  return 0;
}
[hjl@gnu-mic-1 lfs-1]$ gcc foo.c
[hjl@gnu-mic-1 lfs-1]$ ./a.out 
localtime (0xf0c2ab7c5519ff): year: 2147483647
localtime (0xf0c2ab7c551a00) is NULL
[hjl@gnu-mic-1 lfs-1]$

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[Bug libc/13148] localtime doesn't support more than 67768036191705599 seconds

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13148

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |WONTFIX

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2011-09-01 20:04:04 UTC ---
The problem is

             int tm_year;        /* year */

We get overflow at year 2147483648.

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[Bug libc/13148] localtime doesn't support more than 67768036191705599 seconds

[bugdal at aerifal dot cx]

http://sourceware.org/bugzilla/show_bug.cgi?id=13148

Rich Felker <bugdal at aerifal dot cx> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugdal at aerifal dot cx
         Resolution|WONTFIX                     |INVALID

--- Comment #2 from Rich Felker <bugdal at aerifal dot cx> 2011-09-03 05:10:44 UTC ---
This is not a bug. tm_year is required by the standard to have type int.

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[Bug libc/13148] localtime doesn't support more than 67768036191705599 seconds

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=13148

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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