1 files changed, 14 insertions, 1 deletions
diff --git a/src/serialize.h b/src/serialize.h
index edf10440c6..4cc4b0338c 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -1,5 +1,5 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2020 The Bitcoin Core developers
+// Copyright (c) 2009-2021 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -527,6 +527,19 @@ struct CompactSizeFormatter
     }
 };
 
+class CompactSizeWriter
+{
+protected:
+    uint64_t n;
+public:
+    explicit CompactSizeWriter(uint64_t n_in) : n(n_in) { }
+
+    template<typename Stream>
+    void Serialize(Stream &s) const {
+        WriteCompactSize<Stream>(s, n);
+    }
+};
+
 template<size_t Limit>
 struct LimitedStringFormatter
 {