[perl #63038] Test.pm eats the "Use of uninitialized value" warnings

[via RT]

# New Ticket Created by  Gabor Szabo 
# Please include the string:  [perl #63038]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=63038 >


the following code prints a warning "Use of uninitialized value"

================
use v6;

my %h;
say %h<field>;
================

If this is within a test as follows, the warnings is not printed

================
use v6;

use Test;
plan 1;
ok(1);


my %h;
say %h<field>;

================