Regression test

Closes phpstan/phpstan#5867

Author: ondrejmirtes

tests/PHPStan/Rules/Functions/CallCallablesRuleTest.php

@@ -262,4 +262,9 @@ public function testStaticCallInFunctions(): void
 		$this->analyse([__DIR__ . '/data/static-call-in-functions.php'], []);
 	}
 
+	public function testBug5867(): void
+	{
+		$this->analyse([__DIR__ . '/data/bug-5867.php'], []);
+	}
+
 }

tests/PHPStan/Rules/Functions/data/bug-5867.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Bug5867;
+
+class HelloWorld
+{
+	/**
+	 * @param class-string $factory
+	 */
+	public function sayHello(string $factory): void
+	{
+		if (class_exists($factory) && method_exists($factory, '__invoke')) {
+			(new $factory())();
+		}
+	}
+}