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// Copyright 2017 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.
#![feature(try_trait)]
use std::ops::Try;
fn main() {
// error for a `Try` type on a non-`Try` fn
std::fs::File::open("foo")?;
// a non-`Try` type on a non-`Try` fn
()?;
// an unrelated use of `Try`
try_trait_generic::<()>();
}
fn try_trait_generic<T: Try>() -> T {
// and a non-`Try` object on a `Try` fn.
()?;
loop {}
}
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