lordgamez commented on code in PR #1348:
URL: https://github.com/apache/nifi-minifi-cpp/pull/1348#discussion_r897956678


##########
libminifi/src/utils/Id.cpp:
##########
@@ -193,8 +190,8 @@ IdGenerator::~IdGenerator() = default;
 
 uint64_t IdGenerator::getDeviceSegmentFromString(const std::string& str, int 
numBits) const {
   uint64_t deviceSegment = 0;
-  for (size_t i = 0; i < str.length(); i++) {
-    unsigned char c = toupper(str[i]);
+  for (auto ch : str) {
+    auto c = gsl::narrow<unsigned char>(std::toupper(gsl::narrow<unsigned 
char>(ch)));

Review Comment:
   According to our previous discussion both should be okay, see [the 
discussion](https://github.com/apache/nifi-minifi-cpp/pull/1348#discussion_r895969983)
 for more detail.



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