Account creation on GCC bug tracker (or issue report)

Account creation on GCC bug tracker (or issue report)

[X Ryl]

Hi,

  I'm not able to create an account on the GCC bug tracker.
I'd like to report a bug with G++7.1 that does not accept this code anymore:

template <int line, typename FuncSig, FuncSig f>
struct HelperWrapper;

// [...]

template <int line, typename Ret, Ret (&Func)()>
struct HelperWrapper<line, Ret (&)(), Func>
{
    static inline int WrapFuncT(const int)
    {
        return 0; // Changed
    }
};

// Unary
template <int line, typename Ret, typename Arg1, Ret (&Func)(Arg1)>
struct HelperWrapper<line, Ret (&)(Arg1), Func>
{
    static inline int WrapFuncT(const int)
    {
        return 1; // Changed
    }
};

// Binary
template <int line, typename Ret, typename Arg1, typename Arg2, Ret
(&Func)(Arg1, Arg2)>
struct HelperWrapper<line, Ret (&)(Arg1, Arg2), Func>
{
    static inline int WrapFuncT(const int)
    {
        return 2; // Changed
    }
};




Rejected with error:
a.hpp:683:16: error: partial specialization 'struct
Type::Implementation::HelperWrapper<line, Ret (&)(), Func>' is not
more specialized than [-fpermissive]
     struct HelperWrapper<line, Ret (&)(void), Func>
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.hpp:640:16: note: primary template 'template<int line, class
FuncSig, FuncSig f> struct Type::Implementation::HelperWrapper'
     struct HelperWrapper;
            ^~~~~~~~~~~~~
a.hpp:695:16: error: partial specialization 'struct
Type::Implementation::HelperWrapper<line, Ret (&)(Arg1), Func>' is not
more specialized than [-fpermissive]
     struct HelperWrapper<line, Ret (&)(Arg1), Func>
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.hpp:640:16: note: primary template 'template<int line, class
FuncSig, FuncSig f> struct Type::Implementation::HelperWrapper'
     struct HelperWrapper;
            ^~~~~~~~~~~~~
a.hpp:707:16: error: partial specialization 'struct
Type::Implementation::HelperWrapper<line, Ret (&)(Arg1, Arg2), Func>'
is not more specialized than [-fpermissive]
     struct HelperWrapper<line, Ret (&)(Arg1, Arg2), Func>
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.hpp:640:16: note: primary template 'template<int line, class
FuncSig, FuncSig f> struct Type::Implementation::HelperWrapper'
     struct HelperWrapper;




While previous version used to accept this fine, and all other C++
compiler are ok with it
I've created a  godbolt.org/g/uW3D7O   example where you can test all
other compilers.
What is the right way to report a bug ?

Best regards,
Cyril RUSSO