fix SplObjectStorage::removeAll/Except

stubs/SplObjectStorage.stub

@@ -42,12 +42,12 @@ class SplObjectStorage implements Countable, Iterator, Serializable, ArrayAccess
     public function getInfo() { }
 
     /**
-     * @param \SplObjectStorage<object, mixed> $storage
+     * @param \SplObjectStorage<*, *> $storage
      */
     public function removeAll(SplObjectStorage $storage): void { }
 
     /**
-     * @param \SplObjectStorage<object, mixed> $storage
+     * @param \SplObjectStorage<*, *> $storage
      */
     public function removeAllExcept(SplObjectStorage $storage): void { }
 

tests/PHPStan/Rules/Methods/CallMethodsRuleTest.php

@@ -3240,4 +3240,15 @@ public function testBug9009(): void
 		$this->analyse([__DIR__ . '/data/bug-9009.php'], []);
 	}
 
+	public function testBuSplObjectStorageRemove(): void
+	{
+		$this->checkThisOnly = false;
+		$this->checkNullables = true;
+		$this->checkUnionTypes = true;
+		$this->checkExplicitMixed = true;
+		$this->analyse([__DIR__ . '/data/bug-SplObjectStorage-remove.php'], [
+			// removeNoIntersect should be reported, but unfortunately it cannot be expressed by the type system.
+		]);
+	}
+
 }

tests/PHPStan/Rules/Methods/data/bug-SplObjectStorage-remove.php

@@ -0,0 +1,80 @@
+<?php declare(strict_types = 1);
+
+namespace BugSplObjectStorageRemove;
+
+class A {}
+
+class B extends A {}
+
+class C extends B {}
+
+class Foo {}
+
+interface BarInterface {}
+
+/** @phpstan-type ObjectStorage \SplObjectStorage<B, int> */
+class HelloWorld
+{
+	/** @var ObjectStorage */
+	private \SplObjectStorage $foo;
+
+	/**
+	 * @param ObjectStorage $other
+	 * @return ObjectStorage
+	 */
+	public function removeSame(\SplObjectStorage $other): \SplObjectStorage
+	{
+		$this->foo->removeAll($other);
+		$this->foo->removeAllExcept($other);
+
+		return $this->foo;
+	}
+
+	/**
+	 * @param \SplObjectStorage<C, string> $other
+	 * @return ObjectStorage
+	 */
+	public function removeNarrower(\SplObjectStorage $other): \SplObjectStorage
+	{
+		$this->foo->removeAll($other);
+		$this->foo->removeAllExcept($other);
+
+		return $this->foo;
+	}
+
+	/**
+	 * @param \SplObjectStorage<B, string> $other
+	 * @return ObjectStorage
+	 */
+	public function removeWider(\SplObjectStorage $other): \SplObjectStorage
+	{
+		$this->foo->removeAll($other);
+		$this->foo->removeAllExcept($other);
+
+		return $this->foo;
+	}
+
+	/**
+	 * @param \SplObjectStorage<BarInterface, string> $other
+	 * @return ObjectStorage
+	 */
+	public function removePossibleIntersect(\SplObjectStorage $other): \SplObjectStorage
+	{
+		$this->foo->removeAll($other);
+		$this->foo->removeAllExcept($other);
+
+		return $this->foo;
+	}
+
+	/**
+	 * @param \SplObjectStorage<Foo, string> $other
+	 * @return ObjectStorage
+	 */
+	public function removeNoIntersect(\SplObjectStorage $other): \SplObjectStorage
+	{
+		$this->foo->removeAll($other);
+		$this->foo->removeAllExcept($other);
+
+		return $this->foo;
+	}
+}