sub UNIVERSAL::new {
  my $class = caller() . "::" . shift;
  $class->new(@_);
}

##</code><code>##

package A::B::C;
sub new { print "A::B::C new @_\n" }

package A::B;
C->new(10);

# C->new calls UNIVERSAL::new('C', 10)
# caller() returns 'A::B' (the package we were in)
# UNIVERSAL::new calls A::B::C->new(10)

##</code><code>##

sub UNIVERSAL::new {
  my $pkg = shift;
  my ($class, $file, $line) = caller;
  my $class = "${class}::$pkg";
  my $new = $class->can('new');
  return $class->$new(@_) if $new != \&UNIVERSAL::new;
  die qq{Can't locate object method "new" via packages $pkg or $class at $file line $line.\n};