[perl #126120] Cannot change native role attribute from consuming class

[Aleks-Daniel Jakimenko-Aleksejev via RT]

Still reproducible (2017.11,HEAD(e5b660e))

On 2015-09-20 10:34:34, elizabeth wrote:
> [19:22:03] <lizmat> m: role R { has int $!a }; class A does R {
> method a() { $!a = 42 } }; say A.new.a # sigh
> [19:22:03] <+camelia> rakudo-moar 97e47a: OUTPUT«Cannot assign to an
> immutable value␤ in method a at /tmp/xjfoxVcXDh:1␤ in block <unit>
> at /tmp/xjfoxVcXDh:1␤␤»
> [19:22:25] <lizmat> m: role R { has Int $!a }; class A does R {
> method a() { $!a = 42 } }; say A.new.a # works fine if it is not a
> native
> [19:22:25] <+camelia> rakudo-moar 97e47a: OUTPUT«42␤»