diff --git a/libs/binder/ndk/include_cpp/android/binder_parcelable_utils.h b/libs/binder/ndk/include_cpp/android/binder_parcelable_utils.h
index f45aa76..c1f2620 100644
--- a/libs/binder/ndk/include_cpp/android/binder_parcelable_utils.h
+++ b/libs/binder/ndk/include_cpp/android/binder_parcelable_utils.h
@@ -58,6 +58,9 @@
 #endif
             AParcel_appendFrom(other.mParcel.get(), this->mParcel.get(), 0,
                                AParcel_getDataSize(other.mParcel.get()));
+        } else {
+            syslog(LOG_ERR,
+                   "sdk_version not compatible, AParcelableHolder need sdk_version >= 31!");
         }
     }
 #endif
@@ -192,6 +195,9 @@
         if (__ANDROID_API__ >= 31) {
 #endif
             AParcel_reset(mParcel.get());
+        } else {
+            syslog(LOG_ERR,
+                   "sdk_version not compatible, AParcelableHolder need sdk_version >= 31!");
         }
     }
 
@@ -201,6 +207,29 @@
     inline bool operator==(const AParcelableHolder& rhs) const { return this == &rhs; }
     inline bool operator>(const AParcelableHolder& rhs) const { return this > &rhs; }
     inline bool operator>=(const AParcelableHolder& rhs) const { return this >= &rhs; }
+#if __ANDROID_API__ >= 31
+    inline AParcelableHolder& operator=(const AParcelableHolder& rhs) {
+        // AParcelableHolder has been introduced in 31.
+#ifdef __ANDROID_UNAVAILABLE_SYMBOLS_ARE_WEAK__
+        if (__builtin_available(android 31, *)) {
+#else
+        if (__ANDROID_API__ >= 31) {
+#endif
+            this->reset();
+            if (this->mStability != rhs.mStability) {
+                syslog(LOG_ERR, "AParcelableHolder stability mismatch: this %d rhs %d!",
+                       this->mStability, rhs.mStability);
+                abort();
+            }
+            AParcel_appendFrom(rhs.mParcel.get(), this->mParcel.get(), 0,
+                               AParcel_getDataSize(rhs.mParcel.get()));
+        } else {
+            syslog(LOG_ERR,
+                   "sdk_version not compatible, AParcelableHolder need sdk_version >= 31!");
+        }
+        return *this;
+    }
+#endif
 
    private:
     mutable ndk::ScopedAParcel mParcel;