Address review comments

Author: kocsismate

Zend/zend_exceptions.c

@@ -761,9 +761,7 @@ void zend_register_default_exception(void) /* {{{ */
 	/* Declared manually because it uses constant E_ERROR. */
 	zval severity_default_value;
 	ZVAL_LONG(&severity_default_value, E_ERROR);
-	zend_string *severity_name = zend_string_init("severity", sizeof("severity") - 1, 1);
-	zend_declare_typed_property(zend_ce_error_exception, severity_name, &severity_default_value, ZEND_ACC_PROTECTED, NULL, (zend_type) ZEND_TYPE_INIT_MASK(MAY_BE_LONG));
-	zend_string_release(severity_name);
+	zend_declare_typed_property(zend_ce_error_exception, ZSTR_KNOWN(ZEND_STR_SEVERITY), &severity_default_value, ZEND_ACC_PROTECTED, NULL, (zend_type) ZEND_TYPE_INIT_MASK(MAY_BE_LONG));
 
 	zend_ce_error = register_class_Error(zend_ce_throwable);
 	zend_ce_error->create_object = zend_default_exception_new;

Zend/zend_exceptions.stub.php

@@ -75,10 +75,10 @@ final public function getSeverity(): int {}
 
 class Error implements Throwable
 {
-    /** @var string */
+    /** @var string Intentionally left untyped for BC reasons */
     protected $message = "";
     private string $string = "";
-    /** @var int */
+    /** @var int Intentionally left untyped for BC reasons */
     protected $code = 0;
     protected string $file = "";
     protected int $line;

Zend/zend_exceptions_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 5ba5b069f9f32e72d743a9565855cc09f408e164 */
+ * Stub hash: c2cff7b74e950f7c402f9d0684ef5b15258e1fcf */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_class_Throwable_getMessage, 0, 0, IS_STRING, 0)
 ZEND_END_ARG_INFO()