Cannot modify readonly property

class c {
	public readonly string $s;
	public function f()
		{
		$this->s ??= '';
		}
}

string c::$s
Cannot modify readonly property c::$sPHP(PHP2436)

PHP, even with declare(strict_types=1), does not throw an error.

weissersand thank you for reporting the issue;

You're right, we should not report assignments to readonly property within its own class.

Will be fixed.

Workaround for now; we're not reporting the warning if the property is assigned in a private/protected method.