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.
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 implicit coercions involving DSTs and raw pointers.
13 use std::marker::MarkerTrait;
16 trait T : MarkerTrait {}
19 struct Foo<T: ?Sized> {
24 // Test that we cannot convert from *-ptr to &-ptr
26 let y: &S = x; //~ ERROR mismatched types
27 let y: &T = x; //~ ERROR mismatched types
29 // Test that we cannot convert from *-ptr to &-ptr (mut version)
30 let x: *mut S = &mut S;
31 let y: &S = x; //~ ERROR mismatched types
32 let y: &T = x; //~ ERROR mismatched types
34 // Test that we cannot convert an immutable ptr to a mutable one using *-ptrs
35 let x: &mut T = &S; //~ ERROR mismatched types
36 let x: *mut T = &S; //~ ERROR mismatched types
37 let x: *mut S = &S; //~ ERROR mismatched types
39 // The below four sets of tests test that we cannot implicitly deref a *-ptr
42 let y: *const T = x; //~ ERROR mismatched types
44 let x: *mut S = &mut S;
45 let y: *mut T = x; //~ ERROR mismatched types
47 let x: *const Foo<S> = &Foo {f: S};
48 let y: *const Foo<T> = x; //~ ERROR mismatched types
50 let x: *mut Foo<S> = &mut Foo {f: S};
51 let y: *mut Foo<T> = x; //~ ERROR mismatched types