From 9d95187d5ddee56b6dfb55985008bdf70aed31f2 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Wed, 10 Feb 2016 14:19:20 +0100
Subject: [PATCH] Correctly report high-S violations

---
 src/script/interpreter.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
index a92822326..265131ae0 100644
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -165,7 +165,10 @@ bool static IsLowDERSignature(const valtype &vchSig, ScriptError* serror) {
         return set_error(serror, SCRIPT_ERR_SIG_DER);
     }
     std::vector<unsigned char> vchSigCopy(vchSig.begin(), vchSig.begin() + vchSig.size() - 1);
-    return CPubKey::CheckLowS(vchSigCopy);
+    if (!CPubKey::CheckLowS(vchSigCopy)) {
+        return set_error(serror, SCRIPT_ERR_SIG_HIGH_S);
+    }
+    return true;
 }
 
 bool static IsDefinedHashtypeSignature(const valtype &vchSig) {