diff --git a/src/D3D12MemAlloc.cpp b/src/D3D12MemAlloc.cpp
index f70ddf7..73da744 100644
--- a/src/D3D12MemAlloc.cpp
+++ b/src/D3D12MemAlloc.cpp
@@ -4514,6 +4514,34 @@ void AllocatorPimpl::WriteBudgetToJson(JsonWriter& json, const Budget& budget)
 ////////////////////////////////////////////////////////////////////////////////
 // Public class Allocation implementation
 
+void Allocation::PackedData::SetType(Type type)
+{
+    const uint32_t u = (UINT)type;
+    D3D12MA_ASSERT(u < (1u << 2));
+    m_Type = u;
+}
+
+void Allocation::PackedData::SetResourceDimension(D3D12_RESOURCE_DIMENSION resourceDimension)
+{
+    const uint32_t u = (UINT)resourceDimension;
+    D3D12MA_ASSERT(u < (1u << 3));
+    m_ResourceDimension = u;
+}
+
+void Allocation::PackedData::SetResourceFlags(D3D12_RESOURCE_FLAGS resourceFlags)
+{
+    const uint32_t u = (UINT)resourceFlags;
+    D3D12MA_ASSERT(u < (1u << 7));
+    m_ResourceFlags = u;
+}
+
+void Allocation::PackedData::SetTextureLayout(D3D12_TEXTURE_LAYOUT textureLayout)
+{
+    const uint32_t u = (UINT)textureLayout;
+    D3D12MA_ASSERT(u < (1u << 2));
+    m_TextureLayout = u;
+}
+
 void Allocation::Release()
 {
     if(this == NULL)
diff --git a/src/D3D12MemAlloc.h b/src/D3D12MemAlloc.h
index 841a2d0..4e70df2 100644
--- a/src/D3D12MemAlloc.h
+++ b/src/D3D12MemAlloc.h
@@ -561,10 +561,10 @@ private:
         D3D12_RESOURCE_FLAGS GetResourceFlags() const { return (D3D12_RESOURCE_FLAGS)m_ResourceFlags; }
         D3D12_TEXTURE_LAYOUT GetTextureLayout() const { return (D3D12_TEXTURE_LAYOUT)m_TextureLayout; }
 
-        void SetType(Type type) { m_Type = (UINT)type; }
-        void SetResourceDimension(D3D12_RESOURCE_DIMENSION resourceDimension) { m_ResourceDimension = (UINT)resourceDimension; }
-        void SetResourceFlags(D3D12_RESOURCE_FLAGS resourceFlags) { m_ResourceFlags = (UINT)resourceFlags; }
-        void SetTextureLayout(D3D12_TEXTURE_LAYOUT textureLayout) { m_TextureLayout = (UINT)textureLayout; }
+        void SetType(Type type);
+        void SetResourceDimension(D3D12_RESOURCE_DIMENSION resourceDimension);
+        void SetResourceFlags(D3D12_RESOURCE_FLAGS resourceFlags);
+        void SetTextureLayout(D3D12_TEXTURE_LAYOUT textureLayout);
 
     private:
         UINT m_Type : 2;               // enum Type