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POPerl: Use of uninitialized value in numeric lt (<) at /Date/Manip.pm
 

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  1. POPerl: Use of uninitialized value in numeric lt (<) at /Date/Manip.pm
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    <p>This has me puzzled. This code worked on another server, but it's failing on Perl v5.8.8 with <a href="http://search.cpan.org/dist/Date-Manip" rel="nofollow noreferrer">Date::Manip</a> loaded from CPAN today.</p> <pre><code>Warning: Use of uninitialized value in numeric lt (&lt;) at /home/downside/lib/Date/Manip.pm line 3327. at dailyupdate.pl line 13 main::__ANON__('Use of uninitialized value in numeric lt (&lt;) at /home/downsid...') called at /home/downside/lib/Date/Manip.pm line 3327 Date::Manip::Date_SecsSince1970GMT(09, 16, 2008, 00, 21, 22) called at /home/downside/lib/Date/Manip.pm line 1905 Date::Manip::UnixDate('today', '%Y-%m-%d') called at TICKER/SYMBOLS/updatesymbols.pm line 122 TICKER::SYMBOLS::updatesymbols::getdate() called at TICKER/SYMBOLS/updatesymbols.pm line 439 TICKER::SYMBOLS::updatesymbols::updatesymbol('DBI::db=HASH(0x87fcc34)', 'TICKER::SYMBOLS::symbol=HASH(0x8a43540)') called at TICKER/SYMBOLS/updatesymbols.pm line 565 TICKER::SYMBOLS::updatesymbols::updatesymbols('DBI::db=HASH(0x87fcc34)', 1, 0, -1) called at dailyupdate.pl line 149 EDGAR::updatesymbols('DBI::db=HASH(0x87fcc34)', 1, 0, -1) called at dailyupdate.pl line 180 EDGAR::dailyupdate() called at dailyupdate.pl line 193 </code></pre> <p>The code that's failing is simply:</p> <pre><code>sub getdate() { my $err; ## today &amp;Date::Manip::Date_Init('TZ=EST5EDT'); my $today = Date::Manip::UnixDate('today','%Y-%m-%d'); ## today's date ####print "Today is ",$today,"\n"; ## ***TEMP*** return($today); } </code></pre> <p>That's right; <a href="http://search.cpan.org/dist/Date-Manip" rel="nofollow noreferrer">Date::Manip</a> is failing for <code>"today"</code>.</p> <p>The line in <a href="http://search.cpan.org/dist/Date-Manip" rel="nofollow noreferrer">Date::Manip</a> that is failing is:</p> <pre><code> my($tz)=$Cnf{"ConvTZ"}; $tz=$Cnf{"TZ"} if (! $tz); $tz=$Zone{"n2o"}{lc($tz)} if ($tz !~ /^[+-]\d{4}$/); my($tzs)=1; $tzs=-1 if ($tz&lt;0); ### ERROR OCCURS HERE </code></pre> <p>So <a href="http://search.cpan.org/dist/Date-Manip" rel="nofollow noreferrer">Date::Manip</a> is assuming that <code>$Cnf</code> has been initialized with elements <code>"ConvTZ"</code> or <code>"TZ"</code>. Those are initialized in <code>Date_Init</code>, so that should have been taken care of.</p> <p>It's only failing in my large program. If I just extract "<code>getdate()</code>" above and run it standalone, there's no error. So there's something about the global environment that affects this.</p> <p>This seems to be a known, but not understood problem. If you search Google for "Use of uninitialized value date manip" there are about 2400 hits. This error has been reported with <a href="http://www.lemis.com/grog/videorecorder/mythsetup-sep-2006.html" rel="nofollow noreferrer">MythTV</a> and <a href="http://www.cpan.org/modules/by-module/Mail/grepmail-4.51.readme" rel="nofollow noreferrer">grepmail</a>.</p>
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    1. COit's hard to read your code. If you make sure you paste the code so that each line begins with a tab or at least 3 spaces, it will be better formatted.
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    2. COI believe it needs to be 4 spaces. ("Five is right out.")
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