src/test/run-pass/issue-28936.rs

   1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 pub type Session = i32;
  12 pub struct StreamParser<'a, T> {
  13     _tokens: T,
  14     _session: &'a mut Session,
  15 }
  16
  17 impl<'a, T> StreamParser<'a, T> {
  18     pub fn thing(&mut self) -> bool { true }
  19 }
  20
  21 pub fn parse_stream<T: Iterator<Item=i32>, U, F>(
  22         _session: &mut Session, _tokens: T, _f: F) -> U
  23     where F: Fn(&mut StreamParser<T>) -> U { panic!(); }
  24
  25 pub fn thing(session: &mut Session) {
  26     let mut stream = vec![1, 2, 3].into_iter();
  27
  28     let _b = parse_stream(session,
  29                           stream.by_ref(),
  30                           // replacing the above with the following fixes it
  31                           //&mut stream,
  32                           |p| p.thing());
  33
  34 }
  35
  36 fn main() {}