rust/src/test/compile-fail/E0657.rs
Taylor Cramer bc4810d907 Fix impl Trait Lifetime Handling
After this change, impl Trait existentials are
desugared to a new `abstract type` definition
paired with a set of lifetimes to apply.

In-scope generics are included as parents of the
`abstract type` generics. Parent regions are
replaced with static, and parent regions
referenced in the `impl Trait` type are duplicated
at the end of the `abstract type`'s generics.
2017-11-17 10:01:54 -08:00

37 lines
1.0 KiB
Rust

// 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.
#![allow(warnings)]
#![feature(conservative_impl_trait)]
trait Id<T> {}
trait Lt<'a> {}
impl<'a> Lt<'a> for () {}
impl<T> Id<T> for T {}
fn free_fn_capture_hrtb_in_impl_trait()
-> impl for<'a> Id<impl Lt<'a>>
//~^ ERROR `impl Trait` can only capture lifetimes bound at the fn or impl level [E0657]
{
()
}
struct Foo;
impl Foo {
fn impl_fn_capture_hrtb_in_impl_trait()
-> impl for<'a> Id<impl Lt<'a>>
//~^ ERROR `impl Trait` can only capture lifetimes bound at the fn or impl level
{
()
}
}
fn main() {}