From a92a8003600dc2a0dc867c31bd817320cf6f7c56 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9C=80=E8=90=8C=E5=B0=8F=E6=B1=90?= <sumneko@hotmail.com>
Date: Mon, 18 Jul 2022 23:07:41 +0800
Subject: fix #1346

---
 script/vm/type.lua | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

(limited to 'script/vm/type.lua')

diff --git a/script/vm/type.lua b/script/vm/type.lua
index 5d42de6c..6f2d6f35 100644
--- a/script/vm/type.lua
+++ b/script/vm/type.lua
@@ -105,13 +105,16 @@ function vm.isSubType(uri, child, parent, mark)
         child = global
     elseif child.type == 'vm.node' then
         if config.get(uri, 'Lua.type.weakUnionCheck') then
+            local hasKnownType
             for n in child:eachObject() do
-                if  getNodeName(n)
-                and vm.isSubType(uri, n, parent, mark) then
-                    return true
+                if getNodeName(n) then
+                    hasKnownType = true
+                    if vm.isSubType(uri, n, parent, mark) then
+                        return true
+                    end
                 end
             end
-            return false
+            return not hasKnownType
         else
             local weakNil   = config.get(uri, 'Lua.type.weakNilCheck')
             for n in child:eachObject() do
-- 
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