| // Copyright 2014 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. |
| |
| // Test that we cannot create objects from unsized types. |
| |
| trait Foo { fn foo(&self) {} } |
| impl Foo for str {} |
| impl Foo for [u8] {} |
| |
| fn test1<T: ?Sized + Foo>(t: &T) { |
| let u: &Foo = t; |
| //~^ ERROR `T: std::marker::Sized` is not satisfied |
| } |
| |
| fn test2<T: ?Sized + Foo>(t: &T) { |
| let v: &Foo = t as &Foo; |
| //~^ ERROR `T: std::marker::Sized` is not satisfied |
| } |
| |
| fn test3() { |
| let _: &[&Foo] = &["hi"]; |
| //~^ ERROR `str: std::marker::Sized` is not satisfied |
| } |
| |
| fn test4(x: &[u8]) { |
| let _: &Foo = x as &Foo; |
| //~^ ERROR `[u8]: std::marker::Sized` is not satisfied |
| } |
| |
| fn main() { } |
