| // run-pass | |
| #![allow(unused_imports)] | |
| #![allow(unused_must_use)] | |
| // pretty-expanded FIXME #23616 | |
| #![feature(rustc_private)] | |
| extern crate serialize; | |
| use std::fmt; | |
| use serialize::{Encoder, Encodable}; | |
| use serialize::json; | |
| struct Foo<T: Encodable> { | |
| v: T, | |
| } | |
| impl<T: Encodable> Drop for Foo<T> { | |
| fn drop(&mut self) { | |
| json::encode(&self.v); | |
| } | |
| } | |
| fn main() { | |
| let _ = Foo { v: 10 }; | |
| } |