Regression test

Closes phpstan/phpstan#4741

Author: ondrejmirtes

tests/PHPStan/Analyser/NodeScopeResolverTest.php

@@ -505,6 +505,7 @@ public function dataFileAsserts(): iterable
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/array_map_multiple.php');
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/range-numeric-string.php');
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/missing-closure-native-return-typehint.php');
+		yield from $this->gatherAssertTypes(__DIR__ . '/data/bug-4741.php');
 	}
 
 	/**

tests/PHPStan/Analyser/data/bug-4741.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Bug4741;
+
+use function PHPStan\Testing\assertType;
+
+class Foo
+{
+
+	public function isAnObject($object): void {
+		$class = get_class($object);
+		assertType('class-string|false', $class);
+	}
+
+}