Merge bitcoin#8808: Do not shadow variables (gcc set)

ad1ae7a Check and enable -Wshadow by default. (Pavel Janík) 9de90bb Do not shadow variables (gcc set) (Pavel Janík) Tree-SHA512: 9517feb423dc8ddd63896016b25324673bfbe0bffa97f22996f59d7a3fcbdc2ebf2e43ac02bc067546f54e293e9b2f2514be145f867321e9031f895c063d9fb8
PastaPastaPasta · Jan 25, 2019 · 706c56e · 706c56e
1 parent 1cd00d9
commit 706c56e
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Showing 12 changed files with 43 additions and 42 deletions.
diff --git a/configure.ac b/configure.ac
@@ -227,6 +227,7 @@ if test "x$CXXFLAGS_overridden" = "xno"; then
   AX_CHECK_COMPILE_FLAG([-Wformat],[CXXFLAGS="$CXXFLAGS -Wformat"],,[[$CXXFLAG_WERROR]])
   AX_CHECK_COMPILE_FLAG([-Wvla],[CXXFLAGS="$CXXFLAGS -Wvla"],,[[$CXXFLAG_WERROR]])
   AX_CHECK_COMPILE_FLAG([-Wformat-security],[CXXFLAGS="$CXXFLAGS -Wformat-security"],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-Wshadow],[CXXFLAGS="$CXXFLAGS -Wshadow"],,[[$CXXFLAG_WERROR]])
 
   ## Some compilers (gcc) ignore unknown -Wno-* options, but warn about all
   ## unknown options if any other warning is produced. Test the -Wfoo case, and

diff --git a/src/arith_uint256.cpp b/src/arith_uint256.cpp
@@ -173,9 +173,9 @@ unsigned int base_uint<BITS>::bits() const
 {
     for (int pos = WIDTH - 1; pos >= 0; pos--) {
         if (pn[pos]) {
-            for (int bits = 31; bits > 0; bits--) {
-                if (pn[pos] & 1 << bits)
-                    return 32 * pos + bits + 1;
+            for (int nbits = 31; nbits > 0; nbits--) {
+                if (pn[pos] & 1 << nbits)
+                    return 32 * pos + nbits + 1;
             }
             return 32 * pos + 1;
         }

diff --git a/src/bench/lockedpool.cpp b/src/bench/lockedpool.cpp
@@ -13,7 +13,7 @@
 #define BITER 5000
 #define MSIZE 2048
 
-static void LockedPool(benchmark::State& state)
+static void BenchLockedPool(benchmark::State& state)
 {
     void *synth_base = reinterpret_cast<void*>(0x08000000);
     const size_t synth_size = 1024*1024;
@@ -43,5 +43,5 @@ static void LockedPool(benchmark::State& state)
     addr.clear();
 }
 
-BENCHMARK(LockedPool);
+BENCHMARK(BenchLockedPool);
 
diff --git a/src/chain.h b/src/chain.h
@@ -368,9 +368,9 @@ class CDiskBlockIndex : public CBlockIndex
 
     template <typename Stream, typename Operation>
     inline void SerializationOp(Stream& s, Operation ser_action) {
-        int nVersion = s.GetVersion();
+        int _nVersion = s.GetVersion();
         if (!(s.GetType() & SER_GETHASH))
-            READWRITE(VARINT(nVersion));
+            READWRITE(VARINT(_nVersion));
 
         READWRITE(VARINT(nHeight));
         READWRITE(VARINT(nStatus));

diff --git a/src/script/script.cpp b/src/script/script.cpp
@@ -183,18 +183,18 @@ unsigned int CScript::GetSigOpCount(const CScript& scriptSig) const
     // get the last item that the scriptSig
     // pushes onto the stack:
     const_iterator pc = scriptSig.begin();
-    std::vector<unsigned char> data;
+    std::vector<unsigned char> vData;
     while (pc < scriptSig.end())
     {
         opcodetype opcode;
-        if (!scriptSig.GetOp(pc, opcode, data))
+        if (!scriptSig.GetOp(pc, opcode, vData))
             return 0;
         if (opcode > OP_16)
             return 0;
     }
 
     /// ... and return its opcount:
-    CScript subscript(data.begin(), data.end());
+    CScript subscript(vData.begin(), vData.end());
     return subscript.GetSigOpCount(true);
 }
 

diff --git a/src/script/script.h b/src/script/script.h
@@ -448,16 +448,16 @@ class CScript : public CScriptBase
         else if (b.size() <= 0xffff)
         {
             insert(end(), OP_PUSHDATA2);
-            uint8_t data[2];
-            WriteLE16(data, b.size());
-            insert(end(), data, data + sizeof(data));
+            uint8_t _data[2];
+            WriteLE16(_data, b.size());
+            insert(end(), _data, _data + sizeof(_data));
         }
         else
         {
             insert(end(), OP_PUSHDATA4);
-            uint8_t data[4];
-            WriteLE32(data, b.size());
-            insert(end(), data, data + sizeof(data));
+            uint8_t _data[4];
+            WriteLE32(_data, b.size());
+            insert(end(), _data, _data + sizeof(_data));
         }
         insert(end(), b.begin(), b.end());
         return *this;

diff --git a/src/streams.h b/src/streams.h
@@ -545,11 +545,11 @@ class CBufferedFile
             readNow = nAvail;
         if (readNow == 0)
             return false;
-        size_t read = fread((void*)&vchBuf[pos], 1, readNow, src);
-        if (read == 0) {
+        size_t nBytes = fread((void*)&vchBuf[pos], 1, readNow, src);
+        if (nBytes == 0) {
             throw std::ios_base::failure(feof(src) ? "CBufferedFile::Fill: end of file" : "CBufferedFile::Fill: fread failed");
         } else {
-            nSrcPos += read;
+            nSrcPos += nBytes;
             return true;
         }
     }

diff --git a/src/support/lockedpool.cpp b/src/support/lockedpool.cpp
@@ -357,8 +357,8 @@ LockedPool::LockedPageArena::~LockedPageArena()
 /*******************************************************************************/
 // Implementation: LockedPoolManager
 //
-LockedPoolManager::LockedPoolManager(std::unique_ptr<LockedPageAllocator> allocator):
-    LockedPool(std::move(allocator), &LockedPoolManager::LockingFailed)
+LockedPoolManager::LockedPoolManager(std::unique_ptr<LockedPageAllocator> allocator_in):
+    LockedPool(std::move(allocator_in), &LockedPoolManager::LockingFailed)
 {
 }
 

diff --git a/src/test/coins_tests.cpp b/src/test/coins_tests.cpp
@@ -75,7 +75,7 @@ class CCoinsViewTest : public CCoinsView
 class CCoinsViewCacheTest : public CCoinsViewCache
 {
 public:
-    CCoinsViewCacheTest(CCoinsView* base) : CCoinsViewCache(base) {}
+    CCoinsViewCacheTest(CCoinsView* _base) : CCoinsViewCache(_base) {}
 
     void SelfTest() const
     {

diff --git a/src/timedata.h b/src/timedata.h
@@ -27,9 +27,9 @@ class CMedianFilter
     unsigned int nSize;
 
 public:
-    CMedianFilter(unsigned int size, T initial_value) : nSize(size)
+    CMedianFilter(unsigned int _size, T initial_value) : nSize(_size)
     {
-        vValues.reserve(size);
+        vValues.reserve(_size);
         vValues.push_back(initial_value);
         vSorted = vValues;
     }
@@ -48,14 +48,14 @@ class CMedianFilter
 
     T median() const
     {
-        int size = vSorted.size();
-        assert(size > 0);
-        if (size & 1) // Odd number of elements
+        int vSortedSize = vSorted.size();
+        assert(vSortedSize > 0);
+        if (vSortedSize & 1) // Odd number of elements
         {
-            return vSorted[size / 2];
+            return vSorted[vSortedSize / 2];
         } else // Even number of elements
         {
-            return (vSorted[size / 2 - 1] + vSorted[size / 2]) / 2;
+            return (vSorted[vSortedSize / 2 - 1] + vSorted[vSortedSize / 2]) / 2;
         }
     }
 

diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
@@ -441,17 +441,17 @@ bool CWallet::Unlock(const SecureString& strWalletPassphrase, bool fForMixingOnl
     }
 
     CCrypter crypter;
-    CKeyingMaterial vMasterKey;
+    CKeyingMaterial _vMasterKey;
 
     {
         LOCK(cs_wallet);
         BOOST_FOREACH(const MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
         {
             if (!crypter.SetKeyFromPassphrase(strWalletPassphraseFinal, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
                 return false;
-            if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
+            if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, _vMasterKey))
                 continue; // try another master key
-            if (CCryptoKeyStore::Unlock(vMasterKey, fForMixingOnly)) {
+            if (CCryptoKeyStore::Unlock(_vMasterKey, fForMixingOnly)) {
                 if(nWalletBackups == -2) {
                     TopUpKeyPool();
                     LogPrintf("Keypool replenished, re-initializing automatic backups.\n");
@@ -489,14 +489,14 @@ bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase,
         Lock();
 
         CCrypter crypter;
-        CKeyingMaterial vMasterKey;
+        CKeyingMaterial _vMasterKey;
         BOOST_FOREACH(MasterKeyMap::value_type& pMasterKey, mapMasterKeys)
         {
             if(!crypter.SetKeyFromPassphrase(strOldWalletPassphraseFinal, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
                 return false;
-            if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, vMasterKey))
+            if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, _vMasterKey))
                 return false;
-            if (CCryptoKeyStore::Unlock(vMasterKey))
+            if (CCryptoKeyStore::Unlock(_vMasterKey))
             {
                 int64_t nStartTime = GetTimeMillis();
                 crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod);
@@ -513,7 +513,7 @@ bool CWallet::ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase,
 
                 if (!crypter.SetKeyFromPassphrase(strNewWalletPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
                     return false;
-                if (!crypter.Encrypt(vMasterKey, pMasterKey.second.vchCryptedKey))
+                if (!crypter.Encrypt(_vMasterKey, pMasterKey.second.vchCryptedKey))
                     return false;
                 CWalletDB(strWalletFile).WriteMasterKey(pMasterKey.first, pMasterKey.second);
                 if (fWasLocked)
@@ -757,10 +757,10 @@ bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
     if (IsCrypted())
         return false;
 
-    CKeyingMaterial vMasterKey;
+    CKeyingMaterial _vMasterKey;
 
-    vMasterKey.resize(WALLET_CRYPTO_KEY_SIZE);
-    GetStrongRandBytes(&vMasterKey[0], WALLET_CRYPTO_KEY_SIZE);
+    _vMasterKey.resize(WALLET_CRYPTO_KEY_SIZE);
+    GetStrongRandBytes(&_vMasterKey[0], WALLET_CRYPTO_KEY_SIZE);
 
     CMasterKey kMasterKey;
 
@@ -783,7 +783,7 @@ bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
 
     if (!crypter.SetKeyFromPassphrase(strWalletPassphrase, kMasterKey.vchSalt, kMasterKey.nDeriveIterations, kMasterKey.nDerivationMethod))
         return false;
-    if (!crypter.Encrypt(vMasterKey, kMasterKey.vchCryptedKey))
+    if (!crypter.Encrypt(_vMasterKey, kMasterKey.vchCryptedKey))
         return false;
 
     {
@@ -805,7 +805,7 @@ bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
         CHDChain hdChainCurrent;
         GetHDChain(hdChainCurrent);
 
-        if (!EncryptKeys(vMasterKey))
+        if (!EncryptKeys(_vMasterKey))
         {
             if (fFileBacked) {
                 pwalletdbEncryption->TxnAbort();

diff --git a/src/wallet/walletdb.h b/src/wallet/walletdb.h
@@ -77,7 +77,7 @@ class CKeyMetadata
 class CWalletDB : public CDB
 {
 public:
-    CWalletDB(const std::string& strFilename, const char* pszMode = "r+", bool fFlushOnClose = true) : CDB(strFilename, pszMode, fFlushOnClose)
+    CWalletDB(const std::string& strFilename, const char* pszMode = "r+", bool _fFlushOnClose = true) : CDB(strFilename, pszMode, _fFlushOnClose)
     {
     }