This works fine: [code] import std.stdio;
class A {
int val;
alias val this;
T opCast(T : Object)() {
return to!(T)(this);
}
}
class B : A {
}
T to(T : Object, U : Object)(const U obj) {
return *(cast(T*) &obj);
}
void main () {
A a = new B();
a.val = 42;
writefln("a.val: %d", a.val);
B* b = cast(B*) &a;
writefln("*b.val: %d", b.val);
B b1 = to!(B)(a);
writefln("b1.val: %d", b1.val);
B b2 = cast(B) a;
writefln("b2.val: %d", b2.val);
}
[/code]
