From @masak

<masak> rakudo​: my $foo = 1; $foo xor= 1; say $foo
<p6eval> rakudo 50e0e7​: OUTPUT«Null PMC access in invoke()
* masak submits rakudobug
<masak> rakudo​: my $foo = 1; $foo xor= 1
<p6eval> rakudo 50e0e7​: OUTPUT«Null PMC access in invoke()

The C<and=> and C<or=> variants seem to work fine.

@coke - Status changed from 'new' to 'open'

From @masak

<thundergnat> rakudo​: my $x; $x ^^= 1; say $x;
<p6eval> rakudo 51e3ff​: OUTPUT«Null PMC access in invoke()␤ in main
program body at line 1␤»
<masak> whoa there!
* masak submits rakudobug

From @Kodiologist

Actually, ^^= and xor= are currently broken for all lvalues, so I'm
merging this into the ticket for xor=.

From @Kodiologist

Fixed in 549d2a9; tests in S03-operators/assign.t (roast 748c769).

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