UDA: getAttributes does not play well with topleof

[d coder]

Greetings

I am trying out the new UDA functionality in the github dmd. I wanted to
find out what different fields of a class carry a particular attribute. So
I tried to look at the set of attributes on all the fields returned by
tupleof. Interestingly I got nothing. On the other hand, when I explicitly
specify a particular field in the object, the attribute is getting printed
nicely on my screen.

So my question is: Is this a bug in DMD, or am I doing something plainly
wrong?

If this is not a bug, I want to find out if there would be a way to find
what different fields of a class carry a given attribute?

Thanks and Regards
- Puneet


template Tuple(T...) {
  alias T Tuple;
}

enum Bar;
class Foo {
  @Bar int a;
  int b;
}

void main() {
  Foo foo = new Foo;
  foreach(ref l; foo.tupleof) {
    alias Tuple!(__traits(getAttributes, l)) tp;
    pragma(msg, tp); // prints nothing
  }
  alias Tuple!(__traits(getAttributes, foo.a)) tp;
  pragma(msg, tp);             // prints (Bar)
}
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