I'm kinda new to Module::Build, so maybe I did something wrong. Am I the only one who gets warnings when I change my dispatch from "test" to "testcover"? Is there a bug in Devel::Cover? Is there a bug in Module::Build? I probably just did something wrong.

I'm using ActiveState Perl v5.10.0 with Module::Build version 0.31012 and Devel::Cover 0.64 and Eclipse 3.4.1 with EPIC 0.6.34 for my IDE.
UPDATE: I upgraded to Module::Build 0.34 and the warnings are still output. *UPDATE: Looks like a bug in B::Deparse. Hope it gets fixed someday.*

Here's my unit test build file:

use strict;
use warnings;
use Module::Build;

my $build = Module::Build->resume (
  properties => {
    config_dir => '_build',
  },
);

$build->dispatch('test');

When I run this unit test build file, I get the following output:

t\MyLib1.......ok 
t\MyLib2.......ok 
t\MyLib3.......ok 
All tests successful. 
Files=3, Tests=24,  0 wallclock secs ( 0.00 cusr +  0.00 csys =  0.00 CPU)

But when I change the dispatch line to 'testcover' I get the following output which always includes a bunch of "use of uninitialized value in bitwise and" warning messages:

Deleting database D:/Documents and Settings/<username>/My Documents/<SNIP>/cover_db
t\MyLib1.......ok
Use of uninitialized value in bitwise and (&) at D:/Perl/lib/B/Deparse.pm line 4252.
Use of uninitialized value in bitwise and (&) at D:/Perl/lib/B/Deparse.pm line 4252.
t\MyLib2.......ok
Use of uninitialized value in bitwise and (&) at D:/Perl/lib/B/Deparse.pm line 4252.
Use of uninitialized value in bitwise and (&) at D:/Perl/lib/B/Deparse.pm line 4252.
t\MyLib3.......ok
Use of uninitialized value in bitwise and (&) at D:/Perl/lib/B/Deparse.pm line 4252.
Use of uninitialized value in bitwise and (&) at D:/Perl/lib/B/Deparse.pm line 4252.
All tests successful.
Files=3, Tests=24,  0 wallclock secs ( 0.00 cusr +  0.00 csys =  0.00 CPU)
Reading database from D:/Documents and Settings/<username>/My Documents/<SNIP>/cover_db

---------------------------- ------ ------ ------ ------ ------ ------ ------
File                           stmt   bran   cond    sub    pod   time  total
---------------------------- ------ ------ ------ ------ ------ ------ ------
.../lib/ActivePerl/Config.pm    0.0    0.0    0.0    0.0    0.0    n/a    0.0
...l/lib/ActiveState/Path.pm    0.0    0.0    0.0    0.0  100.0    n/a    4.8
<SNIP>
blib/lib/<SNIP>/MyLib2.pm     100.0   90.0    n/a  100.0  100.0    0.0   98.5
blib/lib/<SNIP>/MyLib3.pm     100.0   90.9  100.0  100.0  100.0    0.6   98.0
Total                          14.4    6.7    3.8   18.3   20.0  100.0   11.6
---------------------------- ------ ------ ------ ------ ------ ------ ------

Writing HTML output to D:/Documents and Settings/<username>/My Documents/<SNIP>/cover_db/coverage.html ...
done.