[perl #63466] Null PMC access when matching against rule in nonexistent grammar in Rakudo

[Will Coleda via RT]

On Wed Feb 25 01:53:25 2009, masak wrote:
> $ perl6 -e '"foo" ~~ /<B::TOP>/'
> Null PMC access in get_string()
> [...]
> 
> Whenever there's a Null PMC access, I don't have to provide reasons.
> :) But it seems to me that better error messages can be provided here,
> something along the lines of "the grammar B was not found".

This now errors with 

08:50 < [Coke]> rakudo: "foo" ~~ /<B::TOP>/
08:50 <+p6eval> rakudo 9719f7: OUTPUT«===SORRY!===␤Could not locate
                compile-time value for symbol B␤»

That seems closable with tests.
-- 
Will "Coke" Coleda