Use std::numeric_limits<UNSIGNED>::max()) instead of (UNSIGNED)-1

4 files changed, 6 insertions, 5 deletions

diff --git a/src/arith_uint256.h b/src/arith_uint256.h
index 5cc273be27..bd0360087d 100644
--- a/src/arith_uint256.h
+++ b/src/arith_uint256.h
@@ -8,6 +8,7 @@
 
 #include <assert.h>
 #include <cstring>
+#include <limits>
 #include <stdexcept>
 #include <stdint.h>
 #include <string>
@@ -189,7 +190,7 @@ public:
     {
         // prefix operator
         int i = 0;
-        while (i < WIDTH && --pn[i] == (uint32_t)-1)
+        while (i < WIDTH && --pn[i] == std::numeric_limits<uint32_t>::max())
             i++;
         return *this;
     }
diff --git a/src/streams.h b/src/streams.h
index dc20f7a9da..d5565fe61f 100644
--- a/src/streams.h
+++ b/src/streams.h
@@ -761,7 +761,7 @@ protected:
 
 public:
     CBufferedFile(FILE *fileIn, uint64_t nBufSize, uint64_t nRewindIn, int nTypeIn, int nVersionIn) :
-        nType(nTypeIn), nVersion(nVersionIn), nSrcPos(0), nReadPos(0), nReadLimit((uint64_t)(-1)), nRewind(nRewindIn), vchBuf(nBufSize, 0)
+        nType(nTypeIn), nVersion(nVersionIn), nSrcPos(0), nReadPos(0), nReadLimit(std::numeric_limits<uint64_t>::max()), nRewind(nRewindIn), vchBuf(nBufSize, 0)
     {
         src = fileIn;
     }
@@ -846,7 +846,7 @@ 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;
diff --git a/src/test/serialize_tests.cpp b/src/test/serialize_tests.cpp
index e754996d2f..002f61f6a2 100644
--- a/src/test/serialize_tests.cpp
+++ b/src/test/serialize_tests.cpp
@@ -200,7 +200,7 @@ BOOST_AUTO_TEST_CASE(varints)
     }
 
     for (uint64_t i = 0;  i < 100000000000ULL; i += 999999937) {
-        uint64_t j = -1;
+        uint64_t j = std::numeric_limits<uint64_t>::max();
         ss >> VARINT(j);
         BOOST_CHECK_MESSAGE(i == j, "decoded:" << j << " expected:" << i);
     }
diff --git a/src/test/sighash_tests.cpp b/src/test/sighash_tests.cpp
index c329844341..773204a00c 100644
--- a/src/test/sighash_tests.cpp
+++ b/src/test/sighash_tests.cpp
@@ -105,7 +105,7 @@ void static RandomTransaction(CMutableTransaction &tx, bool fSingle) {
         txin.prevout.hash = InsecureRand256();
         txin.prevout.n = InsecureRandBits(2);
         RandomScript(txin.scriptSig);
-        txin.nSequence = (InsecureRandBool()) ? InsecureRand32() : (unsigned int)-1;
+        txin.nSequence = (InsecureRandBool()) ? InsecureRand32() : std::numeric_limits<uint32_t>::max();
     }
     for (int out = 0; out < outs; out++) {
         tx.vout.push_back(CTxOut());