std.signals regressions

[David]

This code currently fails with a RangeError (used to work in 2.062)

// http://dpaste.dzfl.pl/332a71ec
import std.stdio;
import std.signals;


struct X {
        mixin Signal!();
}

class O {
        void m() {}
}

void main() {
        O o = new O();
        X[string] aa;
        aa["o"] = X.init;
        aa["o"].connect(&o.m);
        

        /*{ // 20
                X x = aa["o"];
        }*/             
}


If you take the uncomment the "block" at line 20 you end up with a
segmentation fault, also worked in 2.062. Both times the problem is in
the __dtor (segfault happens in the call to "_d_toObject(stor.ptr)".

Changing "struct" to "class" and "X.init" to "new X()" it seems to work
as it should.
Is this worth a bugreport or was the old behaviour never intended?
This bug (I consider it one) broke quite a few lines of code... If the
old behaviour was never intended, why wasn't it documentated then... oh
well I am drifting into another D rant here...