rpc: Fix Univalue push_backV OOM in listtransactions

1 files changed, 10 insertions, 0 deletions

diff --git a/src/univalue/include/univalue.h b/src/univalue/include/univalue.h
index 22be0311e8..7f9a6aaffd 100644
--- a/src/univalue/include/univalue.h
+++ b/src/univalue/include/univalue.h
@@ -84,6 +84,8 @@ public:
 
     bool push_back(const UniValue& val);
     bool push_backV(const std::vector<UniValue>& vec);
+    template <class It>
+    bool push_backV(It first, It last);
 
     void __pushKV(const std::string& key, const UniValue& val);
     bool pushKV(const std::string& key, const UniValue& val);
@@ -137,6 +139,14 @@ public:
     friend const UniValue& find_value( const UniValue& obj, const std::string& name);
 };
 
+template <class It>
+bool UniValue::push_backV(It first, It last)
+{
+    if (typ != VARR) return false;
+    values.insert(values.end(), first, last);
+    return true;
+}
+
 enum jtokentype {
     JTOK_ERR        = -1,
     JTOK_NONE       = 0,                           // eof