Failing test case w/ replaces and using in namespaces

[fitzgen]

cc @emilio

Input:

// bindgen-flags: -- -x c++ -std=c++14

namespace JS {
    namespace detail {
        template <typename T>
        struct Wrapped {
            T t;
        };
    }

    template <typename T>
    struct Rooted {
        detail::Wrapped<T> ptr;
    };
}

namespace JS {
    namespace detail {
        /**
         * <div rustbindgen replaces="Wrapped" />
         */
        template <typename T>
        using Wrapped_simple = T;
    }
}

Output:

/* automatically generated by rust-bindgen */


#![allow(non_snake_case)]


#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct Rooted<T> {
    pub ptr: Wrapped<T>,
}

I'd expect there to be a pub type Wrapped<T> = T; in the output.

[fitzgen]

In fact, this also fails, is a little smaller, and does not involve replaces="..."

// bindgen-flags: --emit-clang-ast -- -x c++ -std=c++14

namespace JS {
    namespace detail {
        template <typename T>
        using Wrapped = T;
    }

    template <typename T>
    struct Rooted {
        detail::Wrapped<T> ptr;
    };
}

[fitzgen]

And everything works ok if we get rid of the namespace detail (although there is no pub type, it just gets inlined directly).

[emilio]

So basically Wrapped is a cursor of a kind we don't handle, I'm looking into it.