[perl #72816] [BUG] Cannot assign to an undeclared dynamic variable in Rakudo

[Carl Mäsak]

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<masak> rakudo: my $*x = 42; say $*x.WHAT
<p6eval> rakudo 70667a: OUTPUT«Int()␤»
<masak> rakudo: $*x = 42; say $*x.WHAT
<p6eval> rakudo 70667a: OUTPUT«Cannot assign to readonly value␤current
instr. '&infix:<=>' pc 15648 (src/builtins/Junction.pir:169)␤»
* masak submits rakudobug
<masak> rakudo: $*x = 42
<p6eval> rakudo 70667a: OUTPUT«Cannot assign to readonly value␤current
instr.: '&infix:<=>' pc 15648 (src/builtins/Junction.pir:169)␤»

I'm not sure dynamic variables can be assigned to without first being
initialized. I skimmed S02 but didn't find anything mentioning it.
Anyway, either you can and the error shouldn't be there, or you can't
and the error is less than awesome.