From 321bbc2079e2dc3648ae4eaf845f5b71d30b423a Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Fri, 10 Feb 2017 18:03:14 -0800
Subject: [PATCH] fix ubsan: bitcoin-tx: not initialize context before
 IsFullyValid

---
 src/bitcoin-tx.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/bitcoin-tx.cpp b/src/bitcoin-tx.cpp
index 61e0eb74e6..4b64a96822 100644
--- a/src/bitcoin-tx.cpp
+++ b/src/bitcoin-tx.cpp
@@ -651,11 +651,13 @@ static void MutateTx(CMutableTransaction& tx, const std::string& command,
         MutateTxDelOutput(tx, commandVal);
     else if (command == "outaddr")
         MutateTxAddOutAddr(tx, commandVal);
-    else if (command == "outpubkey")
+    else if (command == "outpubkey") {
+        if (!ecc) { ecc.reset(new Secp256k1Init()); }
         MutateTxAddOutPubKey(tx, commandVal);
-    else if (command == "outmultisig")
+    } else if (command == "outmultisig") {
+        if (!ecc) { ecc.reset(new Secp256k1Init()); }
         MutateTxAddOutMultiSig(tx, commandVal);
-    else if (command == "outscript")
+    } else if (command == "outscript")
         MutateTxAddOutScript(tx, commandVal);
     else if (command == "outdata")
         MutateTxAddOutData(tx, commandVal);