rust/src/test/compile-fail/variance-trait-matching-2.rs

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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
extern crate serialize;
use std::io::MemWriter;
use std::io;
use serialize::{Encodable, Encoder};
pub fn buffer_encode<'a,
T:Encodable<serialize::json::Encoder<'a>,io::IoError>>(
to_encode_object: &T)
-> Vec<u8> {
let mut m = MemWriter::new();
{
let mut encoder =
serialize::json::Encoder::new(&mut m as &mut io::Writer);
//~^ ERROR `m` does not live long enough
to_encode_object.encode(&mut encoder);
}
m.unwrap()
}
fn main() {}