[C++] Warnings cleanup.

Author: mjpt777

sbe-samples/src/main/cpp/OtfExample.cpp

@@ -449,10 +449,11 @@ int main(int argc, char **argv)
     std::uint64_t actingVersion = headerDecoder.getSchemaVersion(buffer);
     std::uint64_t blockLength = headerDecoder.getBlockLength(buffer);
 
-    std::shared_ptr<std::vector<Token>> messageTokens = irDecoder.message(templateId, actingVersion);
+    std::shared_ptr<std::vector<Token>> messageTokens = irDecoder.message(
+        static_cast<int>(templateId), static_cast<int>(actingVersion));
 
-    const std::size_t result =
-        OtfMessageDecoder::decode(messageBuffer, length, actingVersion, blockLength, messageTokens, tokenListener);
+    const std::size_t result = OtfMessageDecoder::decode(
+        messageBuffer, length, actingVersion, blockLength, messageTokens, tokenListener);
 
     std::cout << "result = " << result << "\n";
 

sbe-tool/src/main/cpp/otf/IrDecoder.h

@@ -69,7 +69,7 @@ class IrDecoder
 
     int decode(const char *filename)
     {
-        long fileSize = getFileSize(filename);
+        long long fileSize = getFileSize(filename);
 
         if (fileSize < 0)
         {
@@ -140,7 +140,7 @@ class IrDecoder
 
 protected:
     // OS specifics
-    static long getFileSize(const char *filename)
+    static long long getFileSize(const char *filename)
     {
         struct stat fileStat;
 
@@ -165,7 +165,7 @@ class IrDecoder
         int fd = fileno(fptr);
         while (remaining > 0)
         {
-            long sz = ::read(fd, buffer + (length - remaining), 4098 < remaining ? 4098 : remaining);
+            ssize_t sz = ::read(fd, buffer + (length - remaining), 4098 < remaining ? 4098 : remaining);
             remaining -= sz;
             if (sz < 0)
             {