Fix GH-23842: skipLazyInitialization() copies unresolved constant defaults

Closes GH-23843.

Author: lazerg

NEWS

@@ -404,6 +404,8 @@ PHP                                                                        NEWS
     parent slot when a child class hooks an inherited property. (iliaal)
   . Fixed segfault in ReflectionMethod::createFromMethodName() on an
     uninstantiable subclass. (iliaal)
+  . Fixed bug GH-23842 (ReflectionProperty::skipLazyInitialization() copies
+    invalid constant defaults with OPcache). (DirkTrunkstar, Lazizbek Ergashev)
 
 - Readline:
   . Fixed class constant completion in the interactive shell. (Weilin Du)

Zend/tests/lazy_objects/gh23842.phpt

@@ -0,0 +1,32 @@
+--TEST--
+GH-23842: skipLazyInitialization() copies an unresolved constant default with opcache
+--CREDITS--
+DirkTrunkstar
+--EXTENSIONS--
+opcache
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.file_cache_only=0
+--FILE--
+<?php
+
+class Currency {
+    public const string EUR = 'EUR';
+}
+
+class Product {
+    public string $currency = Currency::EUR;
+}
+
+$reflector = new ReflectionClass(Product::class);
+$product = $reflector->newLazyGhost(function () {
+    throw new \Exception('initializer');
+});
+$reflector->getProperty('currency')->skipLazyInitialization($product);
+
+var_dump($product->currency);
+
+?>
+--EXPECT--
+string(3) "EUR"

ext/reflection/php_reflection.c

@@ -6461,7 +6461,7 @@ ZEND_METHOD(ReflectionProperty, skipLazyInitialization)
 		RETURN_THROWS();
 	}
 
-	zval *src = &object->ce->default_properties_table[OBJ_PROP_TO_NUM(prop->offset)];
+	zval *src = &CE_DEFAULT_PROPERTIES_TABLE(object->ce)[OBJ_PROP_TO_NUM(prop->offset)];
 	zval *dst = OBJ_PROP(object, prop->offset);
 
 	if (!(Z_PROP_FLAG_P(dst) & IS_PROP_LAZY)) {