Extra ';' inside a struct (`-Wextra-semi` warning in Clang) in the `BOOST_OPENMETHOD_OVERRIDE` macro

[SidneyCogdill]

openmethod/include/boost/openmethod/macros.hpp

Line 98 in 626c749

BOOST_OPENMETHOD_DETAIL_LOCATE_METHOD(NAME, ARGS); \

struct IFoo {
    virtual ~IFoo() = default;
};

BOOST_OPENMETHOD(foo, (virtual_<IFoo&> a), void)

struct Foo : IFoo { };

BOOST_OPENMETHOD_OVERRIDE(foo, (Foo & a), void)
{
}

This got expanded into:

template <typename...>
struct foo_boost_openmethod_overriders;
template <>
struct foo_boost_openmethod_overriders<void(Foo& a)> {
    template <typename T>
    struct boost_openmethod_detail_locate_method_aux;
    template <typename... A>
    struct boost_openmethod_detail_locate_method_aux<void(A...)> {
        using type = decltype(foo_boost_openmethod_guide(std ::declval<A>()...));
    };
    ; // <- Extra `;` here
    static auto fn(Foo& a) -> void;
    static auto has_next() -> bool;
    template <typename... Args>
    static auto next(Args&&... args) -> decltype(auto);
};
inline auto foo_boost_openmethod_overriders<void(Foo& a)>::has_next() -> bool { return boost_openmethod_detail_locate_method_aux<void(Foo & a)>::type ::has_next<fn>(); }
template <typename... Args>
inline auto foo_boost_openmethod_overriders<void(Foo& a)>::next(Args&&... args) -> decltype(auto) { return boost_openmethod_detail_locate_method_aux<void(Foo & a)>::type ::next<fn>(std ::forward<Args>(args)...); }
static foo_boost_openmethod_overriders<void(Foo& a)>::boost_openmethod_detail_locate_method_aux<void(Foo& a)>::type ::override<foo_boost_openmethod_overriders<void(Foo& a)>::fn> openmethod_gensym_0;
auto foo_boost_openmethod_overriders<void(Foo& a)>::fn(Foo& a) -> boost ::mp11 ::mp_back<boost ::mp11 ::mp_list<void>>
{
}