[perl #112908] cannot use result of enum invocation with infix:<but>, even though it is identical to the enum value

[Moritz Lenz]

# New Ticket Created by Moritz Lenz
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< moritz> r: enum day <a b c d e>;say day(3) === d; "foo" but d; say
"alive"; "foo" but day(3)
<+p6eval> rakudo 2ac569: OUTPUT«True␤alive␤Type check failed
in assignment to '$!day'; expected 'day' but got 'Int'␤
in block <anon> at src/gen/CORE.setting:650␤
in method BUILD_LEAST_DERIVED at src/gen/CORE.setting:637␤
in sub infix:<but> at src/gen/CORE.setting:10579␤
< moritz> day(3) === d is True, but '"foo" but d' and '"foo" but
day(3)' dies?
< moritz> r: enum A <b c>; nqp::say nqp::iscont(b); nqp::say
nqp::iscont(A(0))
<+p6eval> rakudo 2ac569: OUTPUT«0␤0␤»

So that's not the problem either.