Even I'm not getting, why it is not working for "Test 4" ...

Module.pm

package Module;

use strict;
use warnings;
use Attribute::Handlers;

#sub TRACE :ATTR(CODE) {            # Test 1
#sub TRACE :ATTR(CODE,INIT) {        # Test 2
#sub TRACE :ATTR(CODE,CHECK) {        # Test 3
sub TRACE :ATTR(CODE,BEGIN) {        # Test 4
    my ($pkg, $sym, $ref, $attr, $data, $phase, $file, $line) = @_;
    *{ $sym } = sub {
        warn "$file($line) called with [@_]\n";
        my( @rc )= &$ref;
        warn "$file($line): returning [ @rc ]\n";
    }
}

sub new :TRACE{
    my $instance        = shift;
    my $class           = ref($instance) || $instance;
    my $self            = {};
    return bless($self, $class);
}

END { }

1;

__END__
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Test.pl

#!/usr/local/bin/perl

use strict;
use warnings;

my $module_to_load     = 'Module';
eval "use $module_to_load;";

# Create object
my $obj               = Module->new();

print "REF: " . ref($obj) ."\n";
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Results: Test 1: Code compiles and executes, but without ATTR support.

Test 2: Code compiles and executes, but without ATTR support.

Test 3: Code compiles and executes, but without ATTR support.

Test 4: Code throws and error msg as - Can't locate object method "new" via package "Module" at ./Test.pl line 10.

perl version: This is perl, v5.8.5 built for i386-linux-thread-multi

OS version: Linux <host> 2.6.9-67.EL #1 Wed Nov 7 13:41:13 EST 2007 i686 i686 i386 GNU/Linux

Thanks