Fix phpstan/phpstan#14439: infinite loop with @extends parent<T>

- Use native reflection instead of getParentClass() when resolving `parent` type in TypeNodeResolver
- getParentClass() resolves @extends PHPDoc tags, which can create infinite recursion when the tag itself uses `parent`
- New integration test in tests/PHPStan/Analyser/AnalyserIntegrationTest.php

Author: staabm

src/PhpDoc/TypeNodeResolver.php

@@ -483,8 +483,9 @@ private function resolveIdentifierTypeNode(IdentifierTypeNode $typeNode, NameSco
 				case 'parent':
 					if ($this->getReflectionProvider()->hasClass($nameScope->getClassName())) {
 						$classReflection = $this->getReflectionProvider()->getClass($nameScope->getClassName());
-						if ($classReflection->getParentClass() !== null) {
-							return new ObjectType($classReflection->getParentClass()->getName());
+						$parentClass = $classReflection->getNativeReflection()->getParentClass();
+						if ($parentClass !== false) {
+							return new ObjectType($parentClass->getName());
 						}
 					}
 

tests/PHPStan/Analyser/AnalyserIntegrationTest.php

@@ -1522,6 +1522,13 @@ public function testBug8835(): void
 		$this->assertNoErrors($errors);
 	}
 
+	public function testBug14439(): void
+	{
+		// endless loop crash with @extends parent<T>
+		$errors = $this->runAnalyse(__DIR__ . '/data/bug-14439.php');
+		$this->assertNoErrors($errors);
+	}
+
 	/**
 	 * @param string[]|null $allAnalysedFiles
 	 * @return list<Error>

tests/PHPStan/Analyser/data/bug-14439.php

@@ -0,0 +1,26 @@
+<?php declare(strict_types = 1);
+
+namespace Bug14439;
+
+/**
+ * @template T
+ */
+abstract class AbstractBar
+{
+}
+
+/**
+ * @template T
+ * @extends parent<T>
+ */
+abstract class AbstractFoo extends AbstractBar
+{
+}
+
+/**
+ * @template T of int
+ * @extends parent<T>
+ */
+class Foo extends AbstractFoo
+{
+}