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// build-pass (FIXME(62277): could be check-pass?)
pub type Session = i32;
pub struct StreamParser<'a, T> {
_tokens: T,
_session: &'a mut Session,
impl<'a, T> StreamParser<'a, T> {
pub fn thing(&mut self) -> bool { true }
pub fn parse_stream<T: Iterator<Item=i32>, U, F>(
_session: &mut Session, _tokens: T, _f: F) -> U
where F: Fn(&mut StreamParser<T>) -> U { panic!(); }
pub fn thing(session: &mut Session) {
let mut stream = vec![1, 2, 3].into_iter();
let _b = parse_stream(session,
// replacing the above with the following fixes it
//&mut stream,
|p| p.thing());
fn main() {}
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