From @masak

<lizmat> masak​: isn't this a rakudo bug?
<lizmat> r​: my $a="foo"; { temp undefine $a; say $a }; say $a
<camelia> rakudo 71ea14​: OUTPUT«(Any)␤Cannot assign to a readonly
variable or a value␤ in block at /tmp/lGIFzmiUSK​:1␤␤»
<masak> huh.
<masak> I... don't know. I think so.
<masak> but I can't internalize what happens there.
<masak> where does the "readonly" come from?
<lizmat> r​: my $a="foo"; { temp $a= (Any); say $a }; say $a
<camelia> rakudo 71ea14​: OUTPUT«(Any)␤foo␤»
<lizmat> seems like "undefine" is maybe doing more than it should
<masak> yeah.
* masak submits rakudobug

From @Mouq

This was fixed in Rakudo commit e84f7180e5 ( rakudo/rakudo@e84f7180e5 ) and tests were added in Roast commit 9a695d3c72 ( Raku/roast@9a695d3c72 )

Closing this ticket as resolved :)

~Mouq

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

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