From @masak

$ 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".

From @kyleha

This is an automatically generated mail to inform you that tests are now available in b/t/spec/S05-grammar/polymorphism.t

The RT System itself - Status changed from 'new' to 'open'

From @bbkr

On Kiev build​:

$ perl6 -e '"foo" ~~ /<B​::TOP>/'
===SORRY!===
regex assertion not terminated by angle bracket at line 1, near "​::TOP>/"

From @bbkr

NOM

bbkr​:nom bbkr$ ./perl6 -e '"foo" ~~ /<B​::TOP>/'
===SORRY!===
regex assertion not terminated by angle bracket at line 1, near "​::TOP>/"

From @coke

On Fri Sep 09 09​:53​:10 2011, bbkr wrote​:

NOM

bbkr​:nom bbkr$ ./perl6 -e '"foo" ~~ /<B​::TOP>/'
===SORRY!===
regex assertion not terminated by angle bracket at line 1, near "​::TOP>/"

20​:26 < [Coke]> rakudo​: "foo" ~~ /<B​::TOP>/
20​:26 <+p6eval> rakudo 38165a​: OUTPUT«Method 'B' not found for invocant of
  class 'Cursor'␤ in regex <anon> at /tmp/A3AivIfbMB​:1␤ in
  method ACCEPTS at src/gen/CORE.setting​:7260␤ in block <anon>
  at /tmp/A3AivIfbMB​:1␤ in <anon> at /tmp/A3AivIfbMB​:1␤»

--
Will "Coke" Coleda

From @coke

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

From @moritz

The test from t/spec/S05-grammar/polymorphism.t passes, so closing ticket.

@moritz - Status changed from 'open' to 'resolved'