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Imported Upstream version 1.1.0+dfsg1
[rustc.git] / src / test / compile-fail / dst-bad-coercions.rs
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1// Copyright 2014 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.
4//
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.
10
11// Test implicit coercions involving DSTs and raw pointers.
12
13struct S;
9346a6ac 14trait T {}
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15impl T for S {}
16
17struct Foo<T: ?Sized> {
18 f: T
19}
20
21pub fn main() {
22 // Test that we cannot convert from *-ptr to &-ptr
23 let x: *const S = &S;
24 let y: &S = x; //~ ERROR mismatched types
25 let y: &T = x; //~ ERROR mismatched types
26
27 // Test that we cannot convert from *-ptr to &-ptr (mut version)
28 let x: *mut S = &mut S;
29 let y: &S = x; //~ ERROR mismatched types
30 let y: &T = x; //~ ERROR mismatched types
31
32 // Test that we cannot convert an immutable ptr to a mutable one using *-ptrs
33 let x: &mut T = &S; //~ ERROR mismatched types
34 let x: *mut T = &S; //~ ERROR mismatched types
35 let x: *mut S = &S; //~ ERROR mismatched types
1a4d82fc 36}