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// 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.
// Test which of the builtin types are considered POD.
#[feature(managed_boxes)];
use std::rc::Rc;
fn assert_pod<T:Pod>() { }
trait Dummy { }
struct MyStruct {
x: int,
y: int,
}
struct MyNonpodStruct {
x: ~int,
}
fn test<'a,T,U:Pod>(_: &'a int) {
// lifetime pointers are ok...
assert_pod::<&'static int>();
assert_pod::<&'a int>();
assert_pod::<&'a str>();
assert_pod::<&'a [int]>();
// ...unless they are mutable
assert_pod::<&'static mut int>(); //~ ERROR does not fulfill `Pod`
assert_pod::<&'a mut int>(); //~ ERROR does not fulfill `Pod`
// ~ pointers are not ok
assert_pod::<~int>(); //~ ERROR does not fulfill `Pod`
assert_pod::<~str>(); //~ ERROR does not fulfill `Pod`
assert_pod::<Vec<int> >(); //~ ERROR does not fulfill `Pod`
assert_pod::<~&'a mut int>(); //~ ERROR does not fulfill `Pod`
// borrowed object types are generally ok
assert_pod::<&'a Dummy>();
assert_pod::<&'a Dummy:Pod>();
assert_pod::<&'static Dummy:Pod>();
// owned object types are not ok
assert_pod::<~Dummy>(); //~ ERROR does not fulfill `Pod`
assert_pod::<~Dummy:Pod>(); //~ ERROR does not fulfill `Pod`
// mutable object types are not ok
assert_pod::<&'a mut Dummy:Pod>(); //~ ERROR does not fulfill `Pod`
// closures are like an `&mut` object
assert_pod::<||>(); //~ ERROR does not fulfill `Pod`
// unsafe ptrs are ok
assert_pod::<*int>();
assert_pod::<*&'a mut int>();
// regular old ints and such are ok
assert_pod::<int>();
assert_pod::<bool>();
assert_pod::<()>();
// tuples are ok
assert_pod::<(int,int)>();
// structs of POD are ok
assert_pod::<MyStruct>();
// structs containing non-POD are not ok
assert_pod::<MyNonpodStruct>(); //~ ERROR does not fulfill `Pod`
// managed or ref counted types are not ok
assert_pod::<@int>(); //~ ERROR does not fulfill `Pod`
assert_pod::<Rc<int>>(); //~ ERROR does not fulfill `Pod`
}
pub fn main() {
}
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