myclassobj.meth unsafely copies myclassobj

[paulstansifer]

The "illegally copies" line should be an error.

resource r(i: int) {}

class c {
    let dont_copy_me: r; //dummy; to prevent copying
    let mut counter: int;

    new() { }

    fn next() -> int {
        self.counter += 1;
        ret self.counter;
    }
}

fn main() {
    let c1 = c();
    c1.next();
    c1.next();
    c1.next();
    let f1 = c1.next; // illegally copies
    let f2 = c1.next;
    io::println(#fmt["%?",f1()]); // prints "4"
    io::println(#fmt["%?",f2()]); // prints "4" ) :
}

[nikomatsakis]

This is related to the method call syntax I was raising earlier...I am more opposed to a.b implicitly creating a closure than ever. :)

[pcwalton]

@nikomatsakis Is this fixed now, since a.b does not implicitly create a closure?

[eholk]

I bet this is a dup of #2548.

[msullivan]

This is both probably a dup and invalid for other reasons now.