From 76ed488b7538173b8193a488dd628d408b8396bd Mon Sep 17 00:00:00 2001
From: rango <rango@swoole.com>
Date: Sat, 9 May 2026 16:00:43 +0800
Subject: [PATCH] =?UTF-8?q?fix(php):=20=E4=BF=AE=E5=A4=8D=E5=AD=90?=
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- 添加了对 objectClass 是否存在的检查，避免空值导致的错误
- 改进了错误消息，明确显示具体的子类和父类名称
- 确保只有在 objectClass 存在且不等于 returnClass 时才进行抽象类验证
---
 src/Php/CompilerBase.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Php/CompilerBase.php b/src/Php/CompilerBase.php
index 10cc1248..5c58c343 100644
--- a/src/Php/CompilerBase.php
+++ b/src/Php/CompilerBase.php
@@ -1801,8 +1801,8 @@ class CompilerBase extends \PhpAot\Core\Translator
                 $this->fatalError($v, 'The return type is `' . $returnClass . '`, cannot return an instance of `' . $objectClass . '`');
             }
             // 把子类当做父类返回时，父类必须是抽象类
-            if ($objectClass !== $returnClass and !$this->isAbstractClass($returnClass)) {
-                $this->fatalError($v, 'When returning a subclass instance as its parent type, the parent class must be abstract');
+            if ($objectClass and $objectClass !== $returnClass and !$this->isAbstractClass($returnClass)) {
+                $this->fatalError($v, "When returning a subclass `$objectClass` instance as parent type, the parent class `$returnClass` must be abstract");
             }
         }