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Merge #10760: Avoid dereference-of-casted-pointer

0aadc11fd Avoid dereference-of-casted-pointer (Pieter Wuille)

Pull request description:

  And prefer a static_cast to the intended reference type.

Tree-SHA512: e83b20023a4dca6029b46f7040a8a6fd54e1b42112ec0c87c3c3b567ed641de97a9e2335b57a2efb075491f641e5b977bc226a474276bea0c3c3c71d8d6ac54d
0.15
Pieter Wuille 7 years ago
parent
commit
10b22e3141
No known key found for this signature in database
GPG Key ID: A636E97631F767E0
  1. 2
      src/core_memusage.h
  2. 4
      src/primitives/transaction.h
  3. 2
      src/rpc/blockchain.cpp
  4. 4
      src/script/interpreter.cpp
  5. 8
      src/script/script.h
  6. 6
      src/test/dbwrapper_tests.cpp
  7. 2
      src/txdb.cpp
  8. 16
      src/wallet/walletdb.cpp

2
src/core_memusage.h

@ -10,7 +10,7 @@ @@ -10,7 +10,7 @@
#include "memusage.h"
static inline size_t RecursiveDynamicUsage(const CScript& script) {
return memusage::DynamicUsage(*static_cast<const CScriptBase*>(&script));
return memusage::DynamicUsage(script);
}
static inline size_t RecursiveDynamicUsage(const COutPoint& out) {

4
src/primitives/transaction.h

@ -106,7 +106,7 @@ public: @@ -106,7 +106,7 @@ public:
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action) {
READWRITE(prevout);
READWRITE(*(CScriptBase*)(&scriptSig));
READWRITE(scriptSig);
READWRITE(nSequence);
}
@ -146,7 +146,7 @@ public: @@ -146,7 +146,7 @@ public:
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action) {
READWRITE(nValue);
READWRITE(*(CScriptBase*)(&scriptPubKey));
READWRITE(scriptPubKey);
}
void SetNull()

2
src/rpc/blockchain.cpp

@ -798,7 +798,7 @@ static void ApplyStats(CCoinsStats &stats, CHashWriter& ss, const uint256& hash, @@ -798,7 +798,7 @@ static void ApplyStats(CCoinsStats &stats, CHashWriter& ss, const uint256& hash,
stats.nTransactions++;
for (const auto output : outputs) {
ss << VARINT(output.first + 1);
ss << *(const CScriptBase*)(&output.second.out.scriptPubKey);
ss << output.second.out.scriptPubKey;
ss << VARINT(output.second.out.nValue);
stats.nTransactionOutputs++;
stats.nTotalAmount += output.second.out.nValue;

4
src/script/interpreter.cpp

@ -1099,7 +1099,7 @@ public: @@ -1099,7 +1099,7 @@ public:
// Serialize the script
if (nInput != nIn)
// Blank out other inputs' signatures
::Serialize(s, CScriptBase());
::Serialize(s, CScript());
else
SerializeScriptCode(s);
// Serialize the nSequence
@ -1207,7 +1207,7 @@ uint256 SignatureHash(const CScript& scriptCode, const CTransaction& txTo, unsig @@ -1207,7 +1207,7 @@ uint256 SignatureHash(const CScript& scriptCode, const CTransaction& txTo, unsig
// The prevout may already be contained in hashPrevout, and the nSequence
// may already be contain in hashSequence.
ss << txTo.vin[nIn].prevout;
ss << static_cast<const CScriptBase&>(scriptCode);
ss << scriptCode;
ss << amount;
ss << txTo.vin[nIn].nSequence;
// Outputs (none/one/all, depending on flags)

8
src/script/script.h

@ -8,6 +8,7 @@ @@ -8,6 +8,7 @@
#include "crypto/common.h"
#include "prevector.h"
#include "serialize.h"
#include <assert.h>
#include <climits>
@ -404,6 +405,13 @@ public: @@ -404,6 +405,13 @@ public:
CScript(std::vector<unsigned char>::const_iterator pbegin, std::vector<unsigned char>::const_iterator pend) : CScriptBase(pbegin, pend) { }
CScript(const unsigned char* pbegin, const unsigned char* pend) : CScriptBase(pbegin, pend) { }
ADD_SERIALIZE_METHODS;
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action) {
READWRITE(static_cast<CScriptBase&>(*this));
}
CScript& operator+=(const CScript& b)
{
insert(end(), b.begin(), b.end());

6
src/test/dbwrapper_tests.cpp

@ -95,7 +95,7 @@ BOOST_AUTO_TEST_CASE(dbwrapper_iterator) @@ -95,7 +95,7 @@ BOOST_AUTO_TEST_CASE(dbwrapper_iterator)
uint256 in2 = InsecureRand256();
BOOST_CHECK(dbw.Write(key2, in2));
std::unique_ptr<CDBIterator> it(const_cast<CDBWrapper*>(&dbw)->NewIterator());
std::unique_ptr<CDBIterator> it(const_cast<CDBWrapper&>(dbw).NewIterator());
// Be sure to seek past the obfuscation key (if it exists)
it->Seek(key);
@ -210,7 +210,7 @@ BOOST_AUTO_TEST_CASE(iterator_ordering) @@ -210,7 +210,7 @@ BOOST_AUTO_TEST_CASE(iterator_ordering)
BOOST_CHECK(dbw.Write(key, value));
}
std::unique_ptr<CDBIterator> it(const_cast<CDBWrapper*>(&dbw)->NewIterator());
std::unique_ptr<CDBIterator> it(const_cast<CDBWrapper&>(dbw).NewIterator());
for (int c=0; c<2; ++c) {
int seek_start;
if (c == 0)
@ -286,7 +286,7 @@ BOOST_AUTO_TEST_CASE(iterator_string_ordering) @@ -286,7 +286,7 @@ BOOST_AUTO_TEST_CASE(iterator_string_ordering)
}
}
std::unique_ptr<CDBIterator> it(const_cast<CDBWrapper*>(&dbw)->NewIterator());
std::unique_ptr<CDBIterator> it(const_cast<CDBWrapper&>(dbw).NewIterator());
for (int c=0; c<2; ++c) {
int seek_start;
if (c == 0)

2
src/txdb.cpp

@ -172,7 +172,7 @@ bool CBlockTreeDB::ReadLastBlockFile(int &nFile) { @@ -172,7 +172,7 @@ bool CBlockTreeDB::ReadLastBlockFile(int &nFile) {
CCoinsViewCursor *CCoinsViewDB::Cursor() const
{
CCoinsViewDBCursor *i = new CCoinsViewDBCursor(const_cast<CDBWrapper*>(&db)->NewIterator(), GetBestBlock());
CCoinsViewDBCursor *i = new CCoinsViewDBCursor(const_cast<CDBWrapper&>(db).NewIterator(), GetBestBlock());
/* It seems that there are no "const iterators" for LevelDB. Since we
only need read operations on it, use a const-cast to get around
that restriction. */

16
src/wallet/walletdb.cpp

@ -94,23 +94,23 @@ bool CWalletDB::WriteMasterKey(unsigned int nID, const CMasterKey& kMasterKey) @@ -94,23 +94,23 @@ bool CWalletDB::WriteMasterKey(unsigned int nID, const CMasterKey& kMasterKey)
bool CWalletDB::WriteCScript(const uint160& hash, const CScript& redeemScript)
{
return WriteIC(std::make_pair(std::string("cscript"), hash), *(const CScriptBase*)(&redeemScript), false);
return WriteIC(std::make_pair(std::string("cscript"), hash), redeemScript, false);
}
bool CWalletDB::WriteWatchOnly(const CScript &dest, const CKeyMetadata& keyMeta)
{
if (!WriteIC(std::make_pair(std::string("watchmeta"), *(const CScriptBase*)(&dest)), keyMeta)) {
if (!WriteIC(std::make_pair(std::string("watchmeta"), dest), keyMeta)) {
return false;
}
return WriteIC(std::make_pair(std::string("watchs"), *(const CScriptBase*)(&dest)), '1');
return WriteIC(std::make_pair(std::string("watchs"), dest), '1');
}
bool CWalletDB::EraseWatchOnly(const CScript &dest)
{
if (!EraseIC(std::make_pair(std::string("watchmeta"), *(const CScriptBase*)(&dest)))) {
if (!EraseIC(std::make_pair(std::string("watchmeta"), dest))) {
return false;
}
return EraseIC(std::make_pair(std::string("watchs"), *(const CScriptBase*)(&dest)));
return EraseIC(std::make_pair(std::string("watchs"), dest));
}
bool CWalletDB::WriteBestBlock(const CBlockLocator& locator)
@ -323,7 +323,7 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue, @@ -323,7 +323,7 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
{
wss.nWatchKeys++;
CScript script;
ssKey >> *(CScriptBase*)(&script);
ssKey >> script;
char fYes;
ssValue >> fYes;
if (fYes == '1')
@ -440,7 +440,7 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue, @@ -440,7 +440,7 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
else if (strType == "watchmeta")
{
CScript script;
ssKey >> *(CScriptBase*)(&script);
ssKey >> script;
keyID = CScriptID(script);
}
@ -474,7 +474,7 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue, @@ -474,7 +474,7 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
uint160 hash;
ssKey >> hash;
CScript script;
ssValue >> *(CScriptBase*)(&script);
ssValue >> script;
if (!pwallet->LoadCScript(script))
{
strErr = "Error reading wallet database: LoadCScript failed";

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