ERROR: InvalidArgument - Argument [...] expects a public callable, but a non-public callable provided

[michnovka]

This error is since psalm 5.24 I think, but I can reproduce it on 5.26 still

this is a perfectly valid code:

class Command
{
    /**
     * @param callable $code A callable(InputInterface $input, OutputInterface $output)
     */
    public function setCode(callable $code): void
    {
    }
}

abstract class AbstractEndlessCommand extends Command
{
   
    public function __construct(string $name = null)
    {
        parent::setCode([$this, 'runLoop']);
    }
    
    protected function runLoop(): void
    {
    }
}

Yet psalm complains:

ERROR: InvalidArgument
Argument 1 of Symfony\Component\Console\Command\Command::setCode expects a public callable, but a non-public callable provided (see https://psalm.dev/004)
        parent::setCode([$this, 'runLoop']);

Here is a reproducer: https://psalm.dev/r/6bd3bf83a1

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/6bd3bf83a1

<?php

class Command
{
    /**
     * @param callable $code A callable(InputInterface $input, OutputInterface $output)
     */
    public function setCode(callable $code): void
    {
    }
}

abstract class AbstractEndlessCommand extends Command
{
   
    public function __construct(string $name = null)
    {
        parent::setCode([$this, 'runLoop']);
    }
    
    protected function runLoop(): void
    {
    }
}

Psalm output (using commit 765dcbf):

ERROR: InvalidArgument - 18:25 - Argument 1 of Command::setCode expects a public callable, but a non-public callable provided

[michnovka]

Some related issues - #11077 and #10936 and #10935