rust/src/test/ui/nll/user-annotations/closure-substs.rs

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2018-10-20 07:38:16 -05:00
// 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(nll)]
// Test that we enforce user-provided type annotations on closures.
fn foo<'a>() {
|x: &'a i32| -> &'static i32 {
return x; //~ ERROR
};
}
fn bar<'a>() {
|x: &i32, b: fn(&'static i32)| {
b(x); //~ ERROR
//~^ ERROR borrowed data escapes outside of closure
//~| ERROR unsatisfied lifetime constraints
};
}
fn main() { }