Re: [MacPerl] mktime not working?

["Paul J. Schinder" <schinder@pobox.com>]

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At 12:00 PM -0700 8/19/98, Jonathan Hurshman wrote:

}
} Does anyone have any idea what's causing this? It's really a pain.
} I've tried reinstalling MacPerl 5.20r4, but that didn't change anything.

It's because the number returned by mktime is an integer > 2^31, and you
have to convince Perl not to treat it as a signed integer.  If it gets
interpred a signed integer, it's negative, and localtime goes back as far
as it can, the Mac zero of time.  The following slight change to your
script makes it work:

use POSIX;

$CalMonth = 8;
$CalYear = 1998;

($sec,$min,$hour,$mday,$month,$year,$wday,$yday,$isdst) = localtime();
print "$sec, $min, $hour, $mday, $month, $year, $wday, $yday, $isdst\n";
($sec,$min,$hour,$mday,$month,$year,$wday,$yday,$isdst) =
localtime(mktime (0, 0, 12, 1, $CalMonth - 1, $CalYear - 1900, '' , ''
, -1) | 0);  #note the | 0, which forces Perl to treat the answer as unsigned

print "$sec, $min, $hour, $mday, $month, $year, $wday, $yday, $isdst\n";

}
} Thanks!
}
} - Jonathan
}
} ===
} +----------------------------------->
} + Jonathan Hurshman
} + http://home.att.net/~J-M.Hurshman/
} +----------------------------------->
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- -----
Paul J. Schinder
schinder@pobox.com

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