note
LanX
OK I was able to reproduce (some of) your problems in 5.14 ... that's indeed pretty inconsistent.<P>
As a first step we should check if newer versions still have these problems.
<c>
use strict;
use warnings;
warn "version $]";
my %hash=(a=>undef,b=>[]);
my $h=\%hash;
my @array=({a=>undef});
my $a=\@array;
warn "hash $hash{a}";
warn "hoa $hash{b}[0]";
warn "hashref $h->{a}";
warn "hoa ref $h->{b}[0]";
warn "array $array[1] ";
warn "aoh $array[0]{a} ";
warn "array ref $a->[1] ";
warn "aoh ref $a->[0]{a} ";
</c><P>
<c>
version 5.014002 at /home/lanx/pm/warn_undef.pl line 4.
Use of uninitialized value $hash{"a"} in concatenation (.) or string at /home/lanx/pm/warn_undef.pl line 13.
hash at /home/lanx/pm/warn_undef.pl line 13.
Use of uninitialized value in concatenation (.) or string at /home/lanx/pm/warn_undef.pl line 14.
hoa at /home/lanx/pm/warn_undef.pl line 14.
Use of uninitialized value in concatenation (.) or string at /home/lanx/pm/warn_undef.pl line 16.
hashref at /home/lanx/pm/warn_undef.pl line 16.
Use of uninitialized value in concatenation (.) or string at /home/lanx/pm/warn_undef.pl line 17.
hoa ref at /home/lanx/pm/warn_undef.pl line 17.
Use of uninitialized value $array[1] in concatenation (.) or string at /home/lanx/pm/warn_undef.pl line 19.
array at /home/lanx/pm/warn_undef.pl line 19.
Use of uninitialized value in concatenation (.) or string at /home/lanx/pm/warn_undef.pl line 20.
aoh at /home/lanx/pm/warn_undef.pl line 20.
Use of uninitialized value in concatenation (.) or string at /home/lanx/pm/warn_undef.pl line 22.
array ref at /home/lanx/pm/warn_undef.pl line 22.
Use of uninitialized value in concatenation (.) or string at /home/lanx/pm/warn_undef.pl line 23.
aoh ref at /home/lanx/pm/warn_undef.pl line 23.
</c><P>
<div class="pmsig"><div class="pmsig-708738">
<p>Cheers Rolf<br>
<sub>(addicted to the Perl Programming Language and [http://i.dailymail.co.uk/i/pix/2014/07/14/article-2690897-1F9F6C0E00000578-463_964x629.jpg|☆☆☆☆] :)
<br> <i>[http://s3.freebeacon.com/up/2015/01/charliehebdo-540x342.png|Je suis Charlie]!</i>
</sub> <P>
</div></div><!-- Wiki2Monks {"version":1.1416} -->
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