[perl #63460] Calling parse on grammar which doesn't exist leads to null PMC access

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

On Wed Feb 25 00:52:37 2009, matt-w wrote:
> 
> Test case found by masak:
> 
> 08:47 < masak> rakudo: class A {}; A::B.parse("")
> 08:47 < p6eval> rakudo 7f8ba6: OUTPUT«Null PMC access in
> invoke()␤current
>                 instr.: '_block14' pc 60 (EVAL_20:39)␤»
> 
Now gives:

> class A {}; A::B.parse("")
Can not find sub A::B

This is the same underlying issue as many others involving non-existent
types, so just resolving it.

Thanks,

Jonathan