"Invalid BUILD_LEAST_DERIVED plan" when `but`-ing a role with native-int attribute

[p6rt]

Migrated from rt.perl.org#131181 (status was 'resolved')

Searchable as RT131181$

[p6rt]

From @zoffixznet

14​:51 Zoffix m​: $ = 42 but role { has int $!x }
14​:51 camelia rakudo-moar 277b6e​: ( no output )
14​:51 Zoffix m​: $ = 42 but role { has Int $!x = 42 }
14​:51 camelia rakudo-moar 277b6e​: ( no output )
14​:51 Zoffix m​: $ = 42 but role { has int $!x = 42 }
14​:51 camelia rakudo-moar 277b6e​: OUTPUT​: «Invalid BUILD_LEAST_DERIVED plan␤ in block <unit> at <tmp> line 1␤␤»

[p6rt]

From @jnthn

On Thu, 20 Apr 2017 07​:53​:23 -0700, cpan@​zoffix.com wrote​:

14​:51 Zoffix m​: $ = 42 but role { has int $!x }
14​:51 camelia rakudo-moar 277b6e​: ( no output )
14​:51 Zoffix m​: $ = 42 but role { has Int $!x = 42 }
14​:51 camelia rakudo-moar 277b6e​: ( no output )
14​:51 Zoffix m​: $ = 42 but role { has int $!x = 42 }
14​:51 camelia rakudo-moar 277b6e​: OUTPUT​: «Invalid
BUILD_LEAST_DERIVED plan␤ in block <unit> at <tmp> line 1␤␤»

Fixed (plus the num and str cases too) and test added to S12-attributes/defaults.t.

[p6rt]

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

[p6rt]

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