Bug report

We experience a crash in phpstan.

I narrowed it down to this reproducible code-sample.

It crashes even the phpstan-playground at https://phpstan.org/try so the share-functionality doesn't work

Code snippet that reproduces the problem

<?php declare(strict_types = 1);

function sigh(string $resource) {
	if (preg_match("!^3(/.*)?$!", $resource, $m)) {
		$resource = count($m) > 1 ? substr($m[1], 1) : '';
	}
}

Expected output

I expect phpstan not to crash.

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No response