From 344d17714c09e840cb707a16a313f0fc2174a6dd Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Tue, 21 Jan 2025 15:39:21 +0100
Subject: [PATCH] Fix crash when using `ref struct` reflection in managed api

---
 Source/Engine/Engine/NativeInterop.Unmanaged.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Source/Engine/Engine/NativeInterop.Unmanaged.cs b/Source/Engine/Engine/NativeInterop.Unmanaged.cs
index 71caee1e9..e0900f663 100644
--- a/Source/Engine/Engine/NativeInterop.Unmanaged.cs
+++ b/Source/Engine/Engine/NativeInterop.Unmanaged.cs
@@ -340,6 +340,8 @@ namespace FlaxEngine.Interop
         {
             Type type = Unsafe.As<TypeHolder>(typeHandle.Target);
             var fields = type.GetFields(BindingFlags.Static | BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
+            if (type.IsValueType && !type.IsEnum && !type.IsPrimitive && type.GetCustomAttribute<System.Runtime.CompilerServices.IsByRefLikeAttribute>() != null)
+                fields = Array.Empty<FieldInfo>(); // ref struct are not supported
 
             NativeFieldDefinitions* arr = (NativeFieldDefinitions*)NativeAlloc(fields.Length, Unsafe.SizeOf<NativeFieldDefinitions>());
             for (int i = 0; i < fields.Length; i++)