[perl #121148] [BUG] Rakudo doesn't really agree with itself on .new/nextwith semantics

[Carl Mäsak]

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<masak> TimToady: ok, now I'm backlogging. I see a lot of trying stuff
out, but any bug is lost in the noise.
<masak> TimToady: do you think you could rebase the bug on the present? ;)
<TimToady> r: class A { submethod BUILD(:$!v){ }; has $.v; method
new(*%_) { say 'OH HAI!'; nextwith(|%_, :v<test>); }; }; class B is A
{ has $.newfiled }; my $b = B.new(:v('do you see me?'),:newfiled(43));
say 'v: ' ~ $b.v; say 'newfiled: ' ~ $b.newfiled;
<camelia> rakudo-jvm 535d91: OUTPUT«OH HAI!␤v: test␤newfiled: 43␤»
<camelia> ..rakudo-moar 535d91: OUTPUT«OH HAI!␤v: do you see me?␤newfiled: 43␤»
<camelia> ..rakudo-parrot 535d91: OUTPUT«OH HAI!␤duplicate named
argument in call␤  in method new at /tmp/tmpfile:1␤  in block  at
/tmp/tmpfile:1␤␤»
<TimToady> that one
* masak peers at it
<masak> ah.
<masak> something is definitely up with that one. :)
* masak submits rakudobug
<masak> r: class A { submethod BUILD(:$!v){ }; has $.v; method
new(*%_) { nextwith(|%_, :v<bar>); }; }; class B is A {}; my $b =
B.new(:v('foo')); say $b.v
<camelia> rakudo-jvm 535d91: OUTPUT«bar␤»
<camelia> ..rakudo-parrot 535d91: OUTPUT«duplicate named argument in
call␤  in method new at /tmp/tmpfile:1␤  in block  at
/tmp/tmpfile:1␤␤»
<camelia> ..rakudo-moar 535d91: OUTPUT«foo␤»
<masak> slightly minimaler.
<timotimo> hooray
<diakopter> wat :)
<masak> anyway, in the above WAT, I think Parrot is obviously wrong,
so let's drop that one out of the contest.
<masak> between the other two, JVM makes the most sense to me.

At least two of them is wrong. I think rakudo-jvm is right, above.