Many "-Wunused-value" warnings when DBG_MACRO_DISABLE is defined

[fgallegosalido]

When we use dbg() with a variable, the compilers detect an unused value, so a warning is shown. This warnings should be hidden with pragmas or some language specific syntax.

[fgallegosalido]

I have a hack that can do the trick;

namespace dbg_macro{
    template <typename T>
    T&& unused_(T&& t){
        return std::forward<T>(t);
    }
}
#define dbg(...) dbg_macro::unused_(__VA_ARGS__)

That can do the job, but adds some boilerplate and it's not fully tested

[Jackojc]

Just out of curiosity, could you show some example code that produces a warning?

[fgallegosalido]

Take the example.cpp file and add at the beginning #define DBG_MACRO_DISABLE

[sharkdp]

@fgallegosalido Thank you! I took the liberty to implement your solution in #46.