ext/pdo: Throw an exception instead of fatal error if the class is not found (#17528)

Author: Girgias

ext/pdo/pdo_stmt.c

@@ -1231,7 +1231,7 @@ PHP_METHOD(PDOStatement, fetchAll)
 					zend_argument_type_error(2, "must be of type string, %s given", zend_zval_value_name(arg2));
 					RETURN_THROWS();
 				}
-				stmt->fetch.cls.ce = zend_fetch_class(Z_STR_P(arg2), ZEND_FETCH_CLASS_AUTO);
+				stmt->fetch.cls.ce = zend_lookup_class(Z_STR_P(arg2));
 				if (!stmt->fetch.cls.ce) {
 					zend_argument_type_error(2, "must be a valid class");
 					RETURN_THROWS();

ext/pdo/tests/pdo_stmt_class_ctor_errors_cannot_find_class.phpt

@@ -39,7 +39,6 @@ require_once getenv('REDIR_TEST_DIR') . 'pdo_test.inc';
 $db = PDOTest::factory();
 PDOTest::dropTableIfExists($db, "pdo_fetch_all_class_error_unknown");
 ?>
---EXPECTF--
+--EXPECT--
 TypeError: PDOStatement::setFetchMode(): Argument #2 must be a valid class
-
-Fatal error: Class "Unknown" not found in %s on line %d
+TypeError: PDOStatement::fetchAll(): Argument #2 must be a valid class