Add Unit Tests For CPP Patterns

[lorenzo-gomez-windhover]

This will probably be a work-in-progress issue for a while. There are many patterns to considerate with C++; nested types, virtual functions, inheritance, etc.

[lorenzo-gomez-windhover]

Virtual Methods

#ifndef CCHANNEL_HPP_
#define CCHANNEL_HPP_

class CChannel
{
   public:
    typedef enum
    {
        UNUSED   = 0,
        INACTIVE = 1,
        ACTIVE   = 2,
    } TState;

    typedef struct
    {
        TState State;
        int    data;
    } SHK;

    CChannel();
    virtual void getData();
    ~CChannel();

   private:
    SHK Hk;
};

#endif /* CCHANNEL_HPP_ */

It seems that if there is a virtual method inside of a class, the DWARF outputs SHK struct as an anonymous struct. This means that an instantiation of SHK will show a structure with all the info, except the name itself("SHK" in this case).

Interestingly enough if the struct declaration is written as the following, it does not treat it as a an anonymous struct:

    typedef struct SHK
    {
        TState State;
        int    data;
    } SHK;

Assuming this is how it is used:

#ifndef VC_MSGS_H
#define VC_MSGS_H

#include "cchannel.hpp"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct
{
    int           data;
    CChannel::SHK Channel[1];
} HkTlm_t;

#ifdef __cplusplus
}
#endif

#endif /* VC_MSG_H */

The code above was compiled with the following command:
g++ -mtune=generic -O0 -fstack-protector-all -std=c++17 -m32 -c -g3 -fPIC virtual_test.cpp

https://lists.dwarfstd.org/pipermail/dwarf-discuss/2024-December/002573.html
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118117

[lorenzo-gomez-windhover]

In progress:https://github.com/WindhoverLabs/juicer/tree/virtual_methods