[perl #67278] non-awesome error message on 'class NewClass does OldClass'

[jn...@jnthn.net via RT]

On Mon Jul 06 23:55:28 2009, moritz wrote:
> 08:53 <@moritz_> rakudo: class A { }; class B does A { }; say "alive"
> 08:53 < p6eval> rakudo 99ad1e: OUTPUT«Method '!select' not found for
> invocant of class ''␤»
> 
While at some point we may end up spec'ing that you actually get your
class snapshotted to make a role, that's not the case yet. So I
awesomized the error:

> class A { }; class B does A { }
Can only use does with a role, but A is not one

Giving to moritz++ for spectests (I guess one to check that we get an
error mentioning A will do fine).

Thanks,

Jonathan