src/test/ui/issues/issue-28498-must-work-ex1.rs

   1 // run-pass
   2 // Example taken from RFC 1238 text
   3
   4 // https://github.com/rust-lang/rfcs/blob/master/text/1238-nonparametric-dropck.md
   5 //     #examples-of-code-that-must-continue-to-work
   6
   7 use std::cell::Cell;
   8
   9 struct Concrete<'a>(u32, Cell<Option<&'a Concrete<'a>>>);
  10
  11 fn main() {
  12     let mut data = Vec::new();
  13     data.push(Concrete(0, Cell::new(None)));
  14     data.push(Concrete(0, Cell::new(None)));
  15
  16     data[0].1.set(Some(&data[1]));
  17     data[1].1.set(Some(&data[0]));
  18 }