From @masak

<diakopter> r​: role F { ... }; class F does F { }
<p6eval> rakudo 1c9939​: OUTPUT«===SORRY!===␤Method 'is_composed' not
found for invocant of class
'Perl6​::Metamodel​::ParametricRoleGroupHOW'␤»
* masak submits rakudobug for 'F does F'

From @masak

<masak> r​: role Foo {}; class Foo {} # most definitely LTA error
message -- via lizmat++
<camelia> rakudo-parrot e5fd34, rakudo-jvm e5fd34​:
OUTPUT«===SORRY!===␤No such method 'is_composed' for invocant of type
'Perl6​::Metamodel​::ParametricRoleGroupHOW'␤»
* masak submits rakudobug
<moritz> oh, I think I know what's going on
<moritz> because roles are multi, there's no redeclaration error
<moritz> though there should be one, because the second defintion is not a role
<jnthn> I think it's actually detected that it's looking at a re-decl
and is then trying to establish if the thing is a stub or not
<jnthn> Since is_composed is the way to detect that
<jnthn> But yeah, needs to check if the object *can* is_composed
before actually calling it.

From @skids

This seems to be fixed now, and tests are added in S14-roles/basic.t

  1..3
  ok 1 - 'role RR { }; class RR { };' died
  ok 2 - right exception type (X​::Redeclaration)
  ok 3 - .symbol matches RR
ok 37 - did we throws-like X​::Redeclaration?
  1..3
  ok 1 - 'role RRR { }; class RRR does RRR { };' died
  ok 2 - right exception type (X​::Redeclaration)
  ok 3 - .symbol matches RRR
ok 38 - did we throws-like X​::Redeclaration?

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

From @usev6

On Sun Aug 09 14​:05​:27 2015, bri@​abrij.org wrote​:

This seems to be fixed now, and tests are added in S14-roles/basic.t

1\.\.3
ok 1 \- 'role RR \{ \}; class RR \{ \};' died
ok 2 \- right exception type \(X​::Redeclaration\)
ok 3 \- \.symbol matches RR

ok 37 - did we throws-like X​::Redeclaration?
1..3
ok 1 - 'role RRR { }; class RRR does RRR { };' died
ok 2 - right exception type (X​::Redeclaration)
ok 3 - .symbol matches RRR
ok 38 - did we throws-like X​::Redeclaration?

Great. I'm closing this ticket as 'resolved'.

@usev6 - Status changed from 'open' to 'resolved'