From 6962f1d2f04ff10927dfe101432b66da97c16152 Mon Sep 17 00:00:00 2001
From: Peter Todd <pete@petertodd.org>
Date: Tue, 4 Nov 2014 12:38:56 -0500
Subject: [PATCH] Add IsPushOnly(const_iterator pc)

Allows IsPushOnly() to be applied to just part of the script for
OP_RETURN outputs.
---
 src/script/script.cpp | 8 ++++++--
 src/script/script.h   | 1 +
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/script/script.cpp b/src/script/script.cpp
index e2b2be3a5..51839a08b 100644
--- a/src/script/script.cpp
+++ b/src/script/script.cpp
@@ -223,9 +223,8 @@ bool CScript::IsPayToScriptHash() const
             (*this)[22] == OP_EQUAL);
 }
 
-bool CScript::IsPushOnly() const
+bool CScript::IsPushOnly(const_iterator pc) const
 {
-    const_iterator pc = begin();
     while (pc < end())
     {
         opcodetype opcode;
@@ -241,6 +240,11 @@ bool CScript::IsPushOnly() const
     return true;
 }
 
+bool CScript::IsPushOnly() const
+{
+    return this->IsPushOnly(begin());
+}
+
 // insightexplorer
 CScript::ScriptType CScript::GetType() const
 {
diff --git a/src/script/script.h b/src/script/script.h
index 3b886e581..16787e72e 100644
--- a/src/script/script.h
+++ b/src/script/script.h
@@ -579,6 +579,7 @@ public:
     uint160 AddressHash() const;
 
     /** Called by IsStandardTx and P2SH/BIP62 VerifyScript (which makes it consensus-critical). */
+    bool IsPushOnly(const_iterator pc) const;
     bool IsPushOnly() const;
 
     /**