cannot access superclass from local function

[peter-ahe-google]

The Dart VM fails to compile the program below (which I'll add as dart/tests/language/closure_with_super_send_test.dart in a CL later today).

The VM reports:

'file:///.../dart/tests/language/closure_with_super_send_test.dart': Error: line 16 pos 28: cannot access superclass from local function
    [0].forEach((e) => x = super.m());
                           ^

class Super {
  m() => "super";
}

class Sub extends Super {
  m() => "sub";

  test() {
    var x;
    [0].forEach((e) => x = super.m());
    return x;
  }
}

main() {
  Expect.equals("super", new Sub().test());
  Expect.equals("super", new Super().m());
  Expect.equals("sub", new Sub().m());
}

[jmesserly]

Yeah, even stranger: if you "closurize" a method that uses super, you get the same error. It's sort of like the method got expanded inline or something. If you change the closurization to a lambda that calls the function, then it works again.

[iposva-google]

Set owner to @mhausner.
Added Accepted label.

[kevmoo]

I have an instance method baseclass._updateClock() which I pass into window.setInterval

At runtime, the call to super._updateClock() from subclass._updateClock() gives the same error

[DartBot]

This comment was originally written by peter.wih...@gmail.com

---

ugly workaround:
create a field in subclass that references your method

  Function superUpdate;

and initialize field in the subclass constructor

    superUpdate = super.update;

[DartBot]

This comment was originally written by @mhausner

---

Fixed in r13917.

[DartBot]

This comment was originally written by @mhausner

---

Added Fixed label.

[kevmoo]

Verified on r14973 (sorry, took me a while to update pop-pop-win)

Thanks!