From 1e502ff8252f1e1939385053e8f492286f7d29d2 Mon Sep 17 00:00:00 2001
From: hujin <hj@mapgis.com>
Date: Fri, 18 Nov 2022 10:54:53 +0800
Subject: [PATCH] Fixed memory copy error of virtual table under multiple
 inheritance

---
 src/Runtime/VTables.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Runtime/VTables.cs b/src/Runtime/VTables.cs
index a7fc1e7547..ea4d6c7163 100644
--- a/src/Runtime/VTables.cs
+++ b/src/Runtime/VTables.cs
@@ -49,7 +49,7 @@ public T GetMethodDelegate<T>(short table, int slot, short specialiation = 0) wh
         public unsafe static IntPtr* CloneTable(List<SafeUnmanagedMemoryHandle> cache, IntPtr instance, int offset, int size, int offsetRTTI)
         {
             var sizeInBytes = (size + offsetRTTI) * sizeof(IntPtr);
-            var src = (((*(IntPtr*)instance) + offset) - offsetRTTI * sizeof(IntPtr)).ToPointer();
+            var src = (*(IntPtr**)(instance + offset) - offsetRTTI);
             var entries = (IntPtr*)Marshal.AllocHGlobal(sizeInBytes);
 
             Buffer.MemoryCopy(src, entries, sizeInBytes, sizeInBytes);