1 files changed, 5 insertions, 0 deletions
diff --git a/core/fxcrt/retain_ptr.h b/core/fxcrt/retain_ptr.h
index e14b1ef5dc..02faff611d 100644
--- a/core/fxcrt/retain_ptr.h
+++ b/core/fxcrt/retain_ptr.h
@@ -86,6 +86,8 @@ class RetainPtr {
 // Trivial implementation - internal ref count with virtual destructor.
 class Retainable {
  public:
+  Retainable() = default;
+
   bool HasOneRef() const { return m_nRefCount == 1; }
 
  protected:
@@ -98,6 +100,9 @@ class Retainable {
   template <typename U>
   friend class RetainPtr;
 
+  Retainable(const Retainable& that) = delete;
+  Retainable& operator=(const Retainable& that) = delete;
+
   void Retain() { ++m_nRefCount; }
   void Release() {
     ASSERT(m_nRefCount > 0);