Assuming you are rolling your own constructor, as opposed to using an existing OO framework like Moose or Mouse, you should not explicitly invoke your parent class. Rather, as described in the Overridden Methods section of perltoot, you should invoke the pseudo class SUPER, as in: 

package Child;
use base qw(Parent);

sub new {
    my ($class, $arg1, $arg2, $arg3) = @_; 
    #my $self = SUPER->new($arg1, $arg2);
    my $self = $class->SUPER::new($arg1, $arg2);
    #$self->{arg3} => $arg3;
    $self->{arg3} = $arg3;
    #bless $self, $class;
    return $self;
}

return 1;

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You do need to explicitly invoke the SUPER class, since you are overriding the local new method, and Perl does not a priori know what you've decided to call your constructor. If you were to just say "new", it would call the constructor recursively.

Regarding your second question, as documented in base, use base 'Parent'; will perform the functions intended by the use Exporter;... code, though not following the explicitly same approaches.

Update: Should have tested before posting. Corrected code above (left original commmented) and fixed an OP typo for argument assignment.

In reply to Re: Inheritance - calling parent constructor by kennethk
in thread Inheritance - calling parent constructor by bob_dobalina

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