[perl #86340] [BUG] No error in Rakudo about [=] not being allowed because = is too fiddly

[Carl Mäsak]

# New Ticket Created by  "Carl Mäsak" 
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<masak> rakudo: my ($a, $b, $c); $c = 42; [=] $a, $b, $c; say ($a, $b,
$c).join("|")
<p6eval> rakudo e3bd9a: OUTPUT«Any()|Any()|42␤»
<masak> huh.
<masak> that isn't what I expected...
<masak> std: my ($a, $b, $c); [=] $a, $b, $c
<p6eval> std 4608239: OUTPUT«===SORRY!===␤Can't
reduce with = because list assignment operators are too fiddly  [...]
Check failed␤FAILED 00:01 124m␤»
<masak> ah. it should give a "too fiddly" error.
* masak submits rakudobug