[cpp:GlobalNamespaceMembers][MISRA] Triggered by forward declarations in a mixed C/C++ environment

Rules and Languages Report False-positive / False-negative...
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2

Hello @Sidelobe,

If I understand correctly, you cannot put it because it is a C struct, not a C++ struct.
But the rule 7-3-1 allows C declarations in the global namespace. You should just write:

extern "C"
struct MyCStruct; // forward declaration

namespace MyNamespace {
    class MyClass    {
         MyCStruct* m_myCStructInstance;        
    };
}

But notice it would still be a violation of 3-2-3 (I don’t think it makes much sense, and it will most probably be amended in the next MISRA release), so you should actually write:

// In <MyCStructFwd.h>
struct MyCStruct; // forward declaration

// In your code
extern "C" {
#include <MyCStructFwd.h>
}

namespace MyNamespace {
    class MyClass    {
         MyCStruct* m_myCStructInstance;        
    };
}

Hope this helps!

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