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Role with stubs in a file without a package declation #2247

vrurg opened this issue Sep 5, 2018 · 0 comments


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commented Sep 5, 2018

The Problem

A role with a stub declared in a file without module or package declarations generates a weird error message if used in a script:

Method 'b-meth' must be implemented by FooRole because it is required by roles: FooRole.

Steps to Reproduce

Let's create the following file and name it FooRole.pm6:

     role FooRole is export {
         method b-meth { ... }

and a script:

     use lib '.';
     use FooRole;

Running the script would generate the error line mentioned in the beginning.

Replacing use FooRole with need FooRole or wrapping the role FooRole declaration into a package fixes the problem.

If this behavior is intended then better error text and a note in documentation would be very helpful.


  • Operating system: macOS 10.13
  • Compiler version (perl6 -v): This is Rakudo version 2018.08 built on MoarVM version 2018.08

Reproducable on 2018.06 too.

@vrurg vrurg changed the title Role with stubs Role with stubs in a file without a package declation Sep 5, 2018

@lucasbuchala lucasbuchala added the roles label Mar 15, 2019

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