blob: dad492eb243540ad47559a15dc6a7f7efbbbfd12 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
// Copyright 2012 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.
fn is_sized<T:Sized>() { }
fn not_sized<T: ?Sized>() { }
enum Foo<U> { FooSome(U), FooNone }
fn foo1<T>() { not_sized::<Foo<T>>() } // Hunky dory.
fn foo2<T: ?Sized>() { not_sized::<Foo<T>>() }
//~^ ERROR the trait `std::marker::Sized` is not implemented
//
// Not OK: `T` is not sized.
enum Bar<U: ?Sized> { BarSome(U), BarNone }
fn bar1<T: ?Sized>() { not_sized::<Bar<T>>() }
fn bar2<T: ?Sized>() { is_sized::<Bar<T>>() }
//~^ ERROR the trait `std::marker::Sized` is not implemented
//
// Not OK: `Bar<T>` is not sized, but it should be.
fn main() { }
|
