Index: sources/canbus/messageinterpreter.h
===================================================================
diff -u -rfee7fabf49befb065c89248c19e15efc9ca194e4 -rc5389647e2259e67f8e6d923f3481d7d3f4eab68
--- sources/canbus/messageinterpreter.h	(.../messageinterpreter.h)	(revision fee7fabf49befb065c89248c19e15efc9ca194e4)
+++ sources/canbus/messageinterpreter.h	(.../messageinterpreter.h)	(revision c5389647e2259e67f8e6d923f3481d7d3f4eab68)
@@ -35,21 +35,22 @@
 {
     Q_OBJECT
 
-    bool interpretMessage_HD(const Message &vMessage, GuiActionType &vActionId, QVariantList &vData);
-    bool interpretMessage_DG(const Message &vMessage, GuiActionType &vActionId, QVariantList &vData);
+    bool interpretMessage_HD(const Message &vMessage, GuiActionType &vActionId, QVariantList &vData)                    __attribute_warn_unused_result__;
+    bool interpretMessage_DG(const Message &vMessage, GuiActionType &vActionId, QVariantList &vData)                    __attribute_warn_unused_result__;
 
     bool getBloodFlowData   (const Message &vMessage,
                              types::U32 &vFlowSetPoint,
-                             types::F32 &vMeasuredFlow, types::F32 &vRotorSpeed, types::F32 &vMotorSpeed, types::F32 &vMotorCtlSpeed, types::F32 &vMotorCtlCurrent );
-    bool getPowerOffData    (const Message &vMessage, quint8 &vShowHide);
+                             types::F32 &vMeasuredFlow, types::F32 &vRotorSpeed, types::F32 &vMotorSpeed,
+                             types::F32 &vMotorCtlSpeed, types::F32 &vMotorCtlCurrent )                                 __attribute_warn_unused_result__;
+    bool getPowerOffData    (const Message &vMessage, quint8 &vShowHide)                                                __attribute_warn_unused_result__;
 
     void printUnhandled     (const Message &vMessage);
 public:
     explicit MessageInterpreter(QObject *parent = nullptr);
 
     // interpret the data into GUI understandable Actions/Data
-    bool interpretMessage(const Can_Id vCan_Id, const Message &vMessage, GuiActionType &vActionId, QVariantList &vData);
-    bool interpretMessage(const GuiActionType &vActionId, const QVariantList &vData, QByteArray &vPayload);
+    bool interpretMessage(const Can_Id vCan_Id, const Message &vMessage, GuiActionType &vActionId, QVariantList &vData) __attribute_warn_unused_result__;
+    bool interpretMessage(const GuiActionType &vActionId, const QVariantList &vData, QByteArray &vPayload)              __attribute_warn_unused_result__;
 
 signals: