From @jonathanstowe

Hi,

  my enum Bar <A B C>; say B.value; say B.can("value");

1
Too many positionals passed; expected 2 arguments but got 3
  in block <unit> at -e​:1

It looks like "can()" is being passed possibly the flattened Enum or something.

From @lizmat

On 21 Jun 2015, at 12​:10, Jonathan Stowe (via RT) <perl6-bugs-followup@​perl.org> wrote​:

# New Ticket Created by Jonathan Stowe
# Please include the string​: [perl #​125445]
# in the subject line of all future correspondence about this issue.
# <URL​: https://rt-archive.perl.org/perl6/Ticket/Display.html?id=125445 >

Hi,

my enum Bar <A B C>; say B.value; say B.can("value");

1
Too many positionals passed; expected 2 arguments but got 3
in block <unit> at -e​:1

It looks like "can()" is being passed possibly the flattened Enum or something.

This appears to be a codegen issue somehow.

The call to Mu.can is generated with a (superfluous) Perl6​::Metamodel​::EnumHOW object as the first (SELF) argument, rather than B.

Liz

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

From @jnthn

On Sun Jun 21 03​:10​:36 2015, jns+bc@​gellyfish.co.uk wrote​:

Hi,

my enum Bar <A B C>; say B.value; say B.can("value");

1
Too many positionals passed; expected 2 arguments but got 3
in block <unit> at -e​:1

It looks like "can()" is being passed possibly the flattened Enum or
something.

Turns out far more interesting. The EnumHOW meta-object lacked an implementation of can like ClassHOW, and it then ended up calling the inherited NQPMu.can(...), which expects just the one object being a non-meta-method. Fixed in Rakudo, added tests for .can and .^can to S12-enums/thorough.t.

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