1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // Test which of the builtin types are considered POD.
15 fn assert_copy<T:Copy>() { }
19 #[derive(Copy, Clone)]
25 struct MyNoncopyStruct {
29 fn test<'a,T,U:Copy>(_: &'a isize) {
30 // lifetime pointers are ok...
31 assert_copy::<&'static isize>();
32 assert_copy::<&'a isize>();
33 assert_copy::<&'a str>();
34 assert_copy::<&'a [isize]>();
36 // ...unless they are mutable
37 assert_copy::<&'static mut isize>(); //~ ERROR : std::marker::Copy` is not satisfied
38 assert_copy::<&'a mut isize>(); //~ ERROR : std::marker::Copy` is not satisfied
41 assert_copy::<Box<isize>>(); //~ ERROR : std::marker::Copy` is not satisfied
42 assert_copy::<String>(); //~ ERROR : std::marker::Copy` is not satisfied
43 assert_copy::<Vec<isize> >(); //~ ERROR : std::marker::Copy` is not satisfied
44 assert_copy::<Box<&'a mut isize>>(); //~ ERROR : std::marker::Copy` is not satisfied
46 // borrowed object types are generally ok
47 assert_copy::<&'a Dummy>();
48 assert_copy::<&'a (Dummy+Send)>();
49 assert_copy::<&'static (Dummy+Send)>();
51 // owned object types are not ok
52 assert_copy::<Box<Dummy>>(); //~ ERROR : std::marker::Copy` is not satisfied
53 assert_copy::<Box<Dummy+Send>>(); //~ ERROR : std::marker::Copy` is not satisfied
55 // mutable object types are not ok
56 assert_copy::<&'a mut (Dummy+Send)>(); //~ ERROR : std::marker::Copy` is not satisfied
59 assert_copy::<*const isize>();
60 assert_copy::<*const &'a mut isize>();
62 // regular old ints and such are ok
63 assert_copy::<isize>();
64 assert_copy::<bool>();
68 assert_copy::<(isize,isize)>();
70 // structs of POD are ok
71 assert_copy::<MyStruct>();
73 // structs containing non-POD are not ok
74 assert_copy::<MyNoncopyStruct>(); //~ ERROR : std::marker::Copy` is not satisfied
76 // ref counted types are not ok
77 assert_copy::<Rc<isize>>(); //~ ERROR : std::marker::Copy` is not satisfied