From 64da0983d5fa5042e45da738b6d5dcda38331b8a Mon Sep 17 00:00:00 2001
From: moneromooo-monero <moneromooo-monero@users.noreply.github.com>
Date: Sat, 7 Jan 2017 16:05:02 +0000
Subject: [PATCH] core: don't try to deserialize an empty extra to remove a
 field

---
 src/cryptonote_core/cryptonote_format_utils.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/cryptonote_core/cryptonote_format_utils.cpp b/src/cryptonote_core/cryptonote_format_utils.cpp
index b5f2b069..e04409d8 100644
--- a/src/cryptonote_core/cryptonote_format_utils.cpp
+++ b/src/cryptonote_core/cryptonote_format_utils.cpp
@@ -371,6 +371,8 @@ namespace cryptonote
   //---------------------------------------------------------------
   bool remove_field_from_tx_extra(std::vector<uint8_t>& tx_extra, const std::type_info &type)
   {
+    if (tx_extra.empty())
+      return true;
     std::string extra_str(reinterpret_cast<const char*>(tx_extra.data()), tx_extra.size());
     std::istringstream iss(extra_str);
     binary_archive<false> ar(iss);