From 8b3868c1b4bf89c41b26ecb3a4b7c3a2557e3868 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Tue, 25 Apr 2017 11:29:32 -0700
Subject: [PATCH] Switch CScriptCheck to use Coin instead of CCoins

---
 src/test/transaction_tests.cpp | 15 ++++++++-------
 src/validation.cpp             |  8 ++++----
 2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/src/test/transaction_tests.cpp b/src/test/transaction_tests.cpp
index 986922b2a7f..5c7516fbf1c 100644
--- a/src/test/transaction_tests.cpp
+++ b/src/test/transaction_tests.cpp
@@ -470,18 +470,19 @@ BOOST_AUTO_TEST_CASE(test_big_witness_transaction) {
     for (int i=0; i<20; i++)
         threadGroup.create_thread(boost::bind(&CCheckQueue<CScriptCheck>::Thread, boost::ref(scriptcheckqueue)));
 
-    CCoins coins;
-    coins.fCoinBase = false;
+    std::vector<Coin> coins;
     for(uint32_t i = 0; i < mtx.vin.size(); i++) {
-        CTxOut txout;
-        txout.nValue = 1000;
-        txout.scriptPubKey = scriptPubKey;
-        coins.vout.push_back(txout);
+        Coin coin;
+        coin.nHeight = 1;
+        coin.fCoinBase = false;
+        coin.out.nValue = 1000;
+        coin.out.scriptPubKey = scriptPubKey;
+        coins.emplace_back(std::move(coin));
     }
 
     for(uint32_t i = 0; i < mtx.vin.size(); i++) {
         std::vector<CScriptCheck> vChecks;
-        const CTxOut& output = coins.vout[tx.vin[i].prevout.n];
+        const CTxOut& output = coins[tx.vin[i].prevout.n].out;
         CScriptCheck check(output.scriptPubKey, output.nValue, tx, i, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS, false, &txdata);
         vChecks.push_back(CScriptCheck());
         check.swap(vChecks.back());
diff --git a/src/validation.cpp b/src/validation.cpp
index 43d2cf1d696..b295a7f86ed 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -1116,16 +1116,16 @@ bool CheckInputs(const CTransaction& tx, CValidationState &state, const CCoinsVi
         if (fScriptChecks) {
             for (unsigned int i = 0; i < tx.vin.size(); i++) {
                 const COutPoint &prevout = tx.vin[i].prevout;
-                const CCoins* coins = inputs.AccessCoins(prevout.hash);
-                assert(coins);
+                const Coin& coin = inputs.AccessCoin(prevout);
+                assert(!coin.IsPruned());
 
                 // We very carefully only pass in things to CScriptCheck which
                 // are clearly committed to by tx' witness hash. This provides
                 // a sanity check that our caching is not introducing consensus
                 // failures through additional data in, eg, the coins being
                 // spent being checked as a part of CScriptCheck.
-                const CScript& scriptPubKey = coins->vout[prevout.n].scriptPubKey;
-                const CAmount amount = coins->vout[prevout.n].nValue;
+                const CScript& scriptPubKey = coin.out.scriptPubKey;
+                const CAmount amount = coin.out.nValue;
 
                 // Verify signature
                 CScriptCheck check(scriptPubKey, amount, tx, i, flags, cacheStore, &txdata);