Using perl 5.10 I get the 'Use of uninitialized value in sprintf at <script> line <line>.' only if $DIcas_text string specifies more values then @HR actually contains. If a value in @HR is undefined or the format string is undefined I get a different error message.

#!/usr/bin/perl

use strict;
use warnings;

my ($DIcas_text, @HR, $s);

$DIcas_text = "%s %s %s %s";
@HR = qw(a b c);
$s = sprintf($DIcas_text, @HR);

$DIcas_text = "%s %s %s";
@HR = ('a', undef, 'c');
$s = sprintf($DIcas_text, @HR);

$DIcas_text = undef;
@HR = qw(a b c);
$s = sprintf($DIcas_text, @HR);

[download]

output

Use of uninitialized value in sprintf at /tmp/u.pl line 10.
Use of uninitialized value $HR[1] in sprintf at /tmp/u.pl line 14.
Use of uninitialized value $DIcas_text in sprintf at /tmp/u.pl line 18
+.

[download]

If you get something similar with Perl 5.8 then this might help to figure out what exactly is wrong.

In reply to Re: Troubleshooting perl runtime errors by Monk::Thomas
in thread Troubleshooting perl runtime errors by lvirden

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.