From 4978be72a4a823bec7c9b6656e8162ce44a29dce Mon Sep 17 00:00:00 2001
From: svost <ya.nowa@yandex.ru>
Date: Sat, 17 Oct 2015 00:12:49 +0300
Subject: [PATCH] Replacement (uint type)-1 by type.max

---
 src/main.cpp    |   10 +++++-----
 src/main.h      |   12 ++++++------
 src/serialize.h |    4 ++--
 3 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index b3c3504..7d0ce98 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2675,7 +2675,7 @@ static filesystem::path BlockFilePath(unsigned int nFile)
 
 FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode)
 {
-    if ((nFile < 1) || (nFile == (unsigned int) -1))
+    if ((nFile < 1) || (nFile == std::numeric_limits<uint32_t>::max()))
         return NULL;
     FILE* file = fopen(BlockFilePath(nFile).string().c_str(), pszMode);
     if (!file)
@@ -2942,7 +2942,7 @@ bool LoadExternalBlockFile(FILE* fileIn)
         try {
             CAutoFile blkdat(fileIn, SER_DISK, CLIENT_VERSION);
             unsigned int nPos = 0;
-            while (nPos != (unsigned int)-1 && blkdat.good() && !fRequestShutdown)
+            while (nPos != std::numeric_limits<uint32_t>::max() && blkdat.good() && !fRequestShutdown)
             {
                 unsigned char pchData[65536];
                 do {
@@ -2950,7 +2950,7 @@ bool LoadExternalBlockFile(FILE* fileIn)
                     int nRead = fread(pchData, 1, sizeof(pchData), blkdat);
                     if (nRead <= 8)
                     {
-                        nPos = (unsigned int)-1;
+                        nPos = std::numeric_limits<uint32_t>::max();
                         break;
                     }
                     void* nFind = memchr(pchData, pchMessageStart[0], nRead+1-sizeof(pchMessageStart));
@@ -2966,7 +2966,7 @@ bool LoadExternalBlockFile(FILE* fileIn)
                     else
                         nPos += sizeof(pchData) - sizeof(pchMessageStart) + 1;
                 } while(!fRequestShutdown);
-                if (nPos == (unsigned int)-1)
+                if (nPos == std::numeric_limits<uint32_t>::max())
                     break;
                 fseek(blkdat, nPos, SEEK_SET);
                 unsigned int nSize;
@@ -3335,7 +3335,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
         }
 
         // find last block in inv vector
-        unsigned int nLastBlock = (unsigned int)(-1);
+        unsigned int nLastBlock = std::numeric_limits<uint32_t>::max();
         for (unsigned int nInv = 0; nInv < vInv.size(); nInv++) {
             if (vInv[vInv.size() - 1 - nInv].type == MSG_BLOCK) {
                 nLastBlock = vInv.size() - 1 - nInv;
diff --git a/src/main.h b/src/main.h
index c7784cc..5ecc490 100644
--- a/src/main.h
+++ b/src/main.h
@@ -165,8 +165,8 @@ public:
     }
 
     IMPLEMENT_SERIALIZE( READWRITE(FLATDATA(*this)); )
-    void SetNull() { nFile = (unsigned int) -1; nBlockPos = 0; nTxPos = 0; }
-    bool IsNull() const { return (nFile == (unsigned int) -1); }
+    void SetNull() { nFile = std::numeric_limits<uint32_t>::max(); nBlockPos = 0; nTxPos = 0; }
+    bool IsNull() const { return (nFile == std::numeric_limits<uint32_t>::max()); }
 
     friend bool operator==(const CDiskTxPos& a, const CDiskTxPos& b)
     {
@@ -206,8 +206,8 @@ public:
 
     CInPoint() { SetNull(); }
     CInPoint(CTransaction* ptxIn, unsigned int nIn) { ptx = ptxIn; n = nIn; }
-    void SetNull() { ptx = NULL; n = (unsigned int) -1; }
-    bool IsNull() const { return (ptx == NULL && n == (unsigned int) -1); }
+    void SetNull() { ptx = NULL; n = std::numeric_limits<uint32_t>::max(); }
+    bool IsNull() const { return (ptx == NULL && n == std::numeric_limits<uint32_t>::max()); }
 };
 
 
@@ -222,8 +222,8 @@ public:
     COutPoint() { SetNull(); }
     COutPoint(uint256 hashIn, unsigned int nIn) { hash = hashIn; n = nIn; }
     IMPLEMENT_SERIALIZE( READWRITE(FLATDATA(*this)); )
-    void SetNull() { hash = 0; n = (unsigned int) -1; }
-    bool IsNull() const { return (hash == 0 && n == (unsigned int) -1); }
+    void SetNull() { hash = 0; n = std::numeric_limits<uint32_t>::max(); }
+    bool IsNull() const { return (hash == 0 && n == std::numeric_limits<uint32_t>::max()); }
 
     friend bool operator<(const COutPoint& a, const COutPoint& b)
     {
diff --git a/src/serialize.h b/src/serialize.h
index ccd0145..f3b5a70 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -1331,7 +1331,7 @@ public:
     int nVersion;
 
     CBufferedFile(FILE *fileIn, uint64_t nBufSize, uint64_t nRewindIn, int nTypeIn, int nVersionIn) :
-        src(fileIn), nSrcPos(0), nReadPos(0), nReadLimit((uint64_t)(-1)), nRewind(nRewindIn), vchBuf(nBufSize, 0),
+        src(fileIn), nSrcPos(0), nReadPos(0), nReadLimit(std::numeric_limits<uint64_t>::max()), nRewind(nRewindIn), vchBuf(nBufSize, 0),
         state(0), exceptmask(std::ios_base::badbit | std::ios_base::failbit), nType(nTypeIn), nVersion(nVersionIn) {
     }
 
@@ -1402,7 +1402,7 @@ public:
 
     // prevent reading beyond a certain position
     // no argument removes the limit
-    bool SetLimit(uint64_t nPos = (uint64_t)(-1)) {
+    bool SetLimit(uint64_t nPos = std::numeric_limits<uint64_t>::max()) {
         if (nPos < nReadPos)
             return false;
         nReadLimit = nPos;
-- 
1.7.1