Add test

Author: VincentLanglet

tests/PHPStan/Rules/Classes/ImpossibleInstanceOfRuleTest.php

@@ -513,6 +513,10 @@ public function testBug10036(): void
 				'Instanceof between stdClass and string|null results in an error.',
 				19,
 			],
+			[
+				'Instanceof between stdClass and array results in an error.',
+				39,
+			],
 		]);
 	}
 

tests/PHPStan/Rules/Classes/data/bug-10036.php

@@ -28,4 +28,14 @@ public function sayMixed(mixed $class): void
 	{
 		var_dump(new stdClass instanceof $class);
 	}
+
+	public function sayObject(object $class): void
+	{
+		var_dump(new stdClass instanceof $class);
+	}
+
+	public function sayArray(array $class): void
+	{
+		var_dump(new stdClass instanceof $class);
+	}
 }