Problems with defining a class

[Kevin Pye]

Hi,

The following fairly simple code works well:

   class A {
     has num $!a is required is built;
    };

  dd A.new(a => 1e0);

producing "A.new(a => 1e0)".

However, if we make a slight change:

   class A {
     has num $!a is required is built;
    };

  dd A.new(a => 0e0);

(i.e. initialising to 0 instead of 1), we get

   The attribute '$!a' is required, but you did not provide a value for it. 
   in block <unit> at test.raku line 5

Any value except 0 seems to work fine.

Am I doing something stupid, or is this a problem with rakudo?

Kevin.