[GitHub] [nifi-minifi-cpp] fgerlits commented on a change in pull request #1103: MINIFICPP-1567 enable linter checks in extensions (part 3)

[GitBox <gi...@apache.org>]

fgerlits commented on a change in pull request #1103:
URL: https://github.com/apache/nifi-minifi-cpp/pull/1103#discussion_r651636083



##########
File path: extensions/mqtt/controllerservice/MQTTControllerService.cpp
##########
@@ -70,7 +70,7 @@ void MQTTControllerService::onEnable() {
     }
 
     if (client_) {
-      MQTTClient_setCallbacks(client_, (void *) this, reconnectCallback, receiveCallback, deliveryCallback);
+      MQTTClient_setCallbacks(client_, reinterpret_cast<void *>(this), reconnectCallback, receiveCallback, deliveryCallback);

Review comment:
       the `reinterpret_cast` is not needed, `this` can be implicitly converted to `void*`
   ```suggestion
         MQTTClient_setCallbacks(client_, this, reconnectCallback, receiveCallback, deliveryCallback);
   ```

##########
File path: extensions/opc/src/opc.cpp
##########
@@ -572,7 +574,7 @@ std::string OPCDateTime2String(UA_DateTime raw_date) {
 
 void logFunc(void *context, UA_LogLevel level, UA_LogCategory /*category*/, const char *msg, va_list args) {
   char buffer[1024];
-  vsnprintf(buffer, 1024, msg, args);
+  vsnprintf(buffer, sizeof(buffer), msg, args);

Review comment:
       it's `sizeof(type)` and `sizeof expression` (although we don't follow this consistently in the rest of the code)
   ```suggestion
     vsnprintf(buffer, sizeof buffer, msg, args);
   ```




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