Reflection field value fixes and tests

BeefLibs/corlib/src/Reflection/FieldInfo.bf

@@ -150,7 +150,7 @@ namespace System.Reflection
 	            return &value;*/
 
 	        if (type.IsBoxed)
-	            return ((uint8*)(void*)value) + type.[Friend]mMemberDataOffset;
+	            return ((uint8*)Internal.UnsafeCastToPtr(value)) + type.[Friend]mMemberDataOffset;
 	        return ((uint8*)Internal.UnsafeCastToPtr(value));
 	    }
 

BeefLibs/corlib/src/Type.bf

@@ -733,6 +733,12 @@ namespace System.Reflection
         public override bool IsSubtypeOf(Type checkBaseType)
 		{
 		    TypeInstance curType = this;
+			if (curType.IsBoxed)
+			{
+				curType = curType.UnderlyingType as TypeInstance;
+				if (curType == null)
+					return false;
+			}
 		    while (true)
 		    {
 		        if (curType == checkBaseType)

IDEHelper/Tests/src/Reflection.bf

@@ -1,6 +1,7 @@
 #pragma warning disable 168
 
 using System;
+using System.Reflection;
 
 namespace Tests
 {
@@ -124,6 +125,13 @@ namespace Tests
 			}
 		}
 
+		[Reflect, AlwaysInclude(AssumeInstantiated=true, IncludeAllMethods=true)]
+		struct StructB
+		{
+		    public int mA;
+		    public String mB;
+		}
+
 		class ClassA2 : ClassA
 		{
 			public override int GetA(int32 a)
@@ -470,5 +478,31 @@ namespace Tests
 				methodIdx++;
 			}
 		}
+
+		[Test]
+		static void TestStructB()
+		{
+			StructB sb;
+			sb.mA = 25;
+			sb.mB = "Struct B";
+
+			let type = sb.GetType() as TypeInstance;
+			let fields = type.GetFields();
+			int fieldIdx = 0;
+			for (let field in fields)
+			{
+			    let refP = field.GetValue(sb);
+				switch (fieldIdx)
+				{
+				case 0:
+					Test.Assert(refP.Value.Get<int>() == 25);
+				case 1:
+					Test.Assert(refP.Value.Get<String>() === "Struct B");
+				case 2:
+					Test.FatalError();
+				}
+				fieldIdx++;
+			}
+		}
 	}
 }