Use of uninitialized value
Perl tried to use the value of a variable, and found that the value was undef, so it displayed a warning;
in
Since this generic warning can be triggered at any point during perl execution, perl tells you what opcode it was executing at the time; this gives a clue as to the likely culprit:
method with known name
The particular opcode is OP_METHOD_NAMED; the above is the textual description of that particular op. This op used when the method name is known at compile time, such as: 
$self->foo();

[download]
as opposed to for example 
my $method = 'foo';
$self->$method();

[download]
which uses OP_METHOD instead.

Note that you won't get this particular warning from a simple $undefined_var->foo(), as perl will give you a specific warning in that case; so it's not clear to me how you're triggering that particular warning.

Dave.

In reply to Re: Perl Error Messages Explained? by dave_the_m
in thread Perl Error Messages Explained? by QM

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