rust/src/test/run-pass/generic-iter-frame.rs

// Contrived example? No. It showed up in rustc's resolve pass.

iter i() -> () {
  put ();
}

fn foo[T](&T t) {
  let int x = 10;
  for each (() j in i()) {
    log x;
  }
}

fn main() {
  foo(0xdeadbeef_u);
}