[Bug c++/110128] copy attribute does not copy from template specializations

[jwjagersma at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110128

--- Comment #1 from jwjagersma at gmail dot com ---
Additionally, the following example does not produce any -Wattributes warnings
at all, but the attributes are still not copied:


    template<int>
    struct check_num
    {
        static void check();
    };

    template<>
    struct check_num<13>
    {
        [[gnu::warning("unlucky number")]]
        static void check();
    };

    template<>
    struct check_num<666>
    {
        [[gnu::error("evil number")]]
        static void check();
    };


    template<int I> [[gnu::copy(check_num<I>::check)]]
    int num() { return I; }

    int main()
    {
        return num<42>() + num<13>() + num<666>();
    }