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-rw-r--r--src/main.cpp11
1 files changed, 10 insertions, 1 deletions
diff --git a/src/main.cpp b/src/main.cpp
index 289c295b88..ee9165095a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -315,6 +315,15 @@ bool CTransaction::CheckTransaction() const
return error("CTransaction::CheckTransaction() : txout total out of range");
}
+ // Check for duplicate inputs
+ set<COutPoint> vInOutPoints;
+ BOOST_FOREACH(const CTxIn& txin, vin)
+ {
+ if (vInOutPoints.count(txin.prevout))
+ return false;
+ vInOutPoints.insert(txin.prevout);
+ }
+
if (IsCoinBase())
{
if (vin[0].scriptSig.size() < 2 || vin[0].scriptSig.size() > 100)
@@ -1767,7 +1776,7 @@ bool static AlreadyHave(CTxDB& txdb, const CInv& inv)
// The message start string is designed to be unlikely to occur in normal data.
// The characters are rarely used upper ascii, not valid as UTF-8, and produce
// a large 4-byte int at any alignment.
-char pchMessageStart[4] = { 0xf9, 0xbe, 0xb4, 0xd9 };
+unsigned char pchMessageStart[4] = { 0xf9, 0xbe, 0xb4, 0xd9 };
bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)