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1 | // Copyright 2016 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 | use std::mem; | |
12 | ||
13 | struct A { x: i32, y: f64 } | |
14 | ||
15 | #[cfg(not(works))] | |
16 | unsafe fn access(n:*mut A) -> (i32, f64) { | |
c30ab7b3 | 17 | let x : i32 = n.x; //~ no field `x` on type `*mut A` |
9e0c209e | 18 | //~| NOTE `n` is a native pointer; perhaps you need to deref with `(*n).x` |
c30ab7b3 | 19 | let y : f64 = n.y; //~ no field `y` on type `*mut A` |
9e0c209e SL |
20 | //~| NOTE `n` is a native pointer; perhaps you need to deref with `(*n).y` |
21 | (x, y) | |
22 | } | |
23 | ||
24 | #[cfg(works)] | |
25 | unsafe fn access(n:*mut A) -> (i32, f64) { | |
26 | let x : i32 = (*n).x; | |
27 | let y : f64 = (*n).y; | |
28 | (x, y) | |
29 | } | |
30 | ||
31 | fn main() { | |
32 | let a : A = A { x: 3, y: 3.14 }; | |
33 | let p : &A = &a; | |
34 | let (x,y) = unsafe { | |
35 | let n : *mut A = mem::transmute(p); | |
36 | access(n) | |
37 | }; | |
38 | println!("x: {}, y: {}", x, y); | |
39 | } |