#!/usr/bin/perl

package one;
use Class::Spiffy -base;
our @EXPORT = qw(function);
sub function { print "Function in package one\n" }

package two;
@two::ISA = qw(one);
print STDERR "Class::Spiffy version is ", $Class::Spiffy::VERSION, "\n";
print STDERR "Can two function? ",two->can('function'), "\n";
function();

__END__

cd /home/henry/dev/
/usr/bin/perl -w /home/henry/dev/spiffy_bug.pl 
Class::Spiffy version is 0.15
Can two function? CODE(0x814b738)
Undefined subroutine &two::function called at /home/henry/dev/spiffy_bug.pl line 12.

Compilation exited abnormally with code 255 at Mon Feb 20 13:34:34