48 lines
962 B
Rust
48 lines
962 B
Rust
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(underscore_lifetimes)]
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struct Foo<'a>(&'a u8);
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fn foo(x: &u8) -> Foo<'_> {
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Foo(x)
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}
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fn foo2(x: &'_ u8) -> Foo<'_> {
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Foo(x)
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}
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fn foo3(x: &'_ u8) -> Foo {
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Foo(x)
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}
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fn foo4(_: Foo<'_>) {}
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struct Foo2<'a, 'b> {
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a: &'a u8,
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b: &'b u8,
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}
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fn foo5<'b>(foo: Foo2<'_, 'b>) -> &'b u8 {
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foo.b
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}
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fn main() {
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let x = &5;
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let _ = foo(x);
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let _ = foo2(x);
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let _ = foo3(x);
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foo4(Foo(x));
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let _ = foo5(Foo2 {
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a: x,
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b: &6,
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});
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}
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