glue_drop crash

[jruderman]

tag maybe_pointy {
    no_pointy;
    yes_pointy(@pointy);
}

type pointy = {
    mutable x : maybe_pointy
};

fn main()
{
    let m = @{ mutable x : no_pointy };
    m.x = yes_pointy(m);
}

[jruderman]

In fact, run-pass/cycle-collection.rs crashes if I reverse the order of the tags in "taggy".

[jruderman]

Fixed by graydon@a88d9ef