Crash when parsing MadelineProto

[danog]

psalm seems to crash when parsing my main project, MadelineProto.
I would love to help localizing the exact source of the issue, but I can't quite understand what file is causing it.
Here are the single-threaded debug and debug-line outputs of psalm with the thrown exception.

[psalm-github-bot]

Hey @danog, can you reproduce the issue on https://psalm.dev ?

[danog]

Hi there friendly bot, would love to, but I can't quite figure out what is causing it.
When trying to parse src/danog/MadelineProto/MTProto.php, psalm.dev crashes with an Internal Psalm error on line undefined - undefined.

[weirdan]

https://psalm.dev/r/62b20c86b6 - this reproduces the crash indicated by the debug-by-line link in the ticket description
Edit: simplified it even further

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/62b20c86b6

<?php
  !\is_callable($loop_callback) || 
  \is_array($loop_callback) && 
  !\method_exists(...$loop_callback);

Psalm encountered an internal error:

/vendor/vimeo/psalm/src/Psalm/Internal/Analyzer/Statements/Expression/CallAnalyzer.php: Argument 2 passed to Psalm\Internal\Analyzer\Statements\Expression\CallAnalyzer::checkFunctionArgumentType() must be an instance of Psalm\Type\Union, null given, called in /vendor/vimeo/psalm/src/Psalm/Internal/Analyzer/Statements/Expression/CallAnalyzer.php on line 2052

[danog]

Great, you found the issue! ❤️
I guess I don't need that legacy condition after all, since is_callable works with array class callables anyway.

P. S.
BTW, Sorry for the ugly lack of parenthesis, recently did a mass refactor with php-parser that removed some unnecessary brackets.