Make readonly props fallback to read_property in get_property_ptr_ptr

read_property will then fail for accessing an uninitialized property.

Author: iluuu1994

Zend/tests/readonly_props/array_append_initialization.phpt

@@ -33,5 +33,5 @@ try {
 
 ?>
 --EXPECT--
-Cannot modify readonly property C::$a
+Typed property C::$a must not be accessed before initialization
 Cannot initialize readonly property C::$a from global scope

Zend/tests/readonly_props/gh7942.phpt

@@ -19,4 +19,4 @@ try {
 
 ?>
 --EXPECT--
-Cannot modify readonly property Foo::$bar
+Typed property Foo::$bar must not be accessed before initialization

Zend/zend_object_handlers.c

@@ -1021,10 +1021,12 @@ ZEND_API zval *zend_std_get_property_ptr_ptr(zend_object *zobj, zend_string *nam
 						zend_error(E_WARNING, "Undefined property: %s::$%s", ZSTR_VAL(zobj->ce->name), ZSTR_VAL(name));
 					}
 				} else if (prop_info && UNEXPECTED(prop_info->flags & ZEND_ACC_READONLY)) {
-					if (verify_readonly_initialization_access(prop_info, zobj->ce, name, "initialize")) {
-						zend_readonly_property_modification_error(prop_info);
+					if (!verify_readonly_initialization_access(prop_info, zobj->ce, name, "initialize")) {
+						retval = &EG(error_zval);
+					} else {
+						/* Readonly property, delegate to read_property + write_property. */
+						retval = NULL;
 					}
-					retval = &EG(error_zval);
 				}
 			} else {
 				/* we do have getter - fail and let it try again with usual get/set */

ext/opcache/tests/jit/fetch_obj_006.phpt

@@ -23,8 +23,8 @@ $appendProp2 = (function() {
 $appendProp2();
 ?>
 --EXPECTF--
-Fatal error: Uncaught Error: Cannot modify readonly property Test::$prop in %sfetch_obj_006.php:13
+Fatal error: Uncaught Error: Typed property Test::$prop must not be accessed before initialization in %sfetch_obj_006.php:13
 Stack trace:
 #0 %sfetch_obj_006.php(15): Test->{closure}()
 #1 {main}
-  thrown in %sfetch_obj_006.php on line 13
+  thrown in %sfetch_obj_006.php on line 13