From d0f3aeeec186d18d6b94594545c346dd9eef5849 Mon Sep 17 00:00:00 2001
From: liudan <139250065@qq.com>
Date: Tue, 21 Jul 2020 20:11:58 +0800
Subject: [PATCH] clear old elements in std::set before copy data in unpack
 function

---
 include/fc/io/raw.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/fc/io/raw.hpp b/include/fc/io/raw.hpp
index 00bd74985..b37eae6c1 100644
--- a/include/fc/io/raw.hpp
+++ b/include/fc/io/raw.hpp
@@ -599,6 +599,7 @@ namespace fc {
     inline void unpack( Stream& s, std::set<T>& value ) {
       unsigned_int size; fc::raw::unpack( s, size );
       FC_ASSERT( size.value <= MAX_NUM_ARRAY_ELEMENTS );
+      value.clear();
       for( uint64_t i = 0; i < size.value; ++i )
       {
         T tmp;