Using cppQueue in a class

Projects Programming
1

Hi guys,

I'm having trouble to understand why I get an error when I define a cppQueue member in a class.

I get the error

src\CommMgr.h:60:32: error: expected identifier before 'sizeof'
         cppQueue payloadsQueue(sizeof(Publication), QUEUE_MAX_LENGTH, FIFO);

Why is sizeof unexpected?

Here's the problematic code

////////////////////////////////////////////////////////////////////////////////
// Data types
////////////////////////////////////////////////////////////////////////////////
struct Publication {
    char topic [TOPIC_MAX_LENGTH];
    char payload [PAYLOAD_MAX_LENGTH];
};

class CommMgr {
    public :

        CommMgr(Reseau &reseau);
        CommMgr(char * ipAddr);

        void Init();

        void Task();
        void PublishData(const char *topic, const char * payload);
        void PushPayload(const char *topic, const char * payload);

        void TestPublish();

    private:
        bool isInitialized = false;
        char moduleName[NAME_SIZE];     ///< Name of the device
        char * mqttServerIP;
        int mqttServerPort = 1883;

        PubSubClient mqttClient;        
        EthernetClient ethClient;
        Reseau ethernet;

        char rootTopic[TOPIC_ROOT_LENGTH] = "BIOREACTOR";
        cppQueue payloadsQueue(sizeof(Publication), QUEUE_MAX_LENGTH, FIFO); /// ERROR HERE!!

        unsigned long currentTime;
        unsigned long lastTest = 0;
        unsigned int testRate = 2000;
};

#endif

if I do the same thing in a basic class, I get no error.

#include "cppQueue.h"

class TestClass {
    public:
        cppQueue q(sizeof(String *));
}

Why??

2

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