self cannot be used in trait params

[muglug]

Erroneous UndefinedClass with the following:

<?php

trait CompareTrait
{
    public static function min(self $object, self ...$objects): self
    {
        foreach ($objects as $other) {
            if ($other->compareTo($object) < 0) {
                $object = $other;
            }
        }

        return $object;
    }

    public static function max(self $object, self ...$objects): self
    {
        foreach ($objects as $other) {
            if ($other->compareTo($object) > 0) {
                $object = $other;
            }
        }

        return $object;
    }

    abstract public function compareTo(self $other): int;

    public function equals(self $other): bool
    {
        return 0 === $this->compareTo($other);
    }
}

class Foo
{
    use CompareTrait;
  
    public function compareTo(self $other): int
    {
        return 0;
    }
}

[gharlan]

@muglug Thanks for the really quick fix!

There seems to be still an issue, when I move the compareTo method to trait: https://psalm.dev/r/74606ca7c9

[gharlan]

Another similar case: https://psalm.dev/r/ff2f2509b8