You may find an AUTOLOAD like this of benefit:

package Foo;

Bar::baz( 1, 2, [3,4,5] );

package Bar;

sub baz{ &Baz::qux }

package Baz;

sub AUTOLOAD {
    require Carp;
    require Data::Dumper;
    warn "Non-existant function $AUTOLOAD called with args:\n", 
        Data::Dumper::Dumper(@_), "\nStacktrace:\n";
    Carp::confess();
}
__DATA__
Non-existant function Baz::qux called with args:
$VAR1 = 1;
$VAR2 = 2;
$VAR3 = [
          3,
          4,
          5
        ];

Stacktrace:
 at script line 16
    Baz::AUTOLOAD called at script line 7
    Bar::baz(1, 2, 'ARRAY(0x1abf188)') called at script line 3
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