From @masak

<thundergnat> rakudo​: my ($x, $y); $x = 5; $x min= $y; say $x;
<thundergnat> this is ok
<p6eval> rakudo 51e3ff​: OUTPUT«5␤»
<masak> aye.
<thundergnat> but different from​:
<thundergnat> rakudo​: my ($x, $y); $x = 5; $x max= $y; say $x;
<p6eval> rakudo 51e3ff​: OUTPUT«Any()␤»
* masak submits rakudobug
<masak> thundergnat++
<thundergnat> spec say undef evaluates to -Inf
<masak> aye.
<pmichaud> rakudo​: my ($x, $y); $x = 5; say $x max $y;
<p6eval> rakudo 51e3ff​: OUTPUT«Any()␤»

From @Kodiologist

Fixed in e7e9d51ca; tests are in S03-operators/minmax.t (roast
0127f17a570fe).

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