| // Copyright 2012-2014 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. |
| |
| |
| #![feature(intrinsics)] |
| |
| use std::ptr; |
| |
| struct Point { |
| x: f32, |
| y: f32, |
| z: f32, |
| } |
| |
| extern "rust-intrinsic" { |
| fn return_address() -> *const u8; |
| } |
| |
| fn f(result: &mut usize) -> Point { |
| unsafe { |
| *result = return_address() as usize; |
| Point { |
| x: 1.0, |
| y: 2.0, |
| z: 3.0, |
| } |
| } |
| |
| } |
| |
| fn main() { |
| let mut intrinsic_reported_address = 0; |
| let pt = f(&mut intrinsic_reported_address); |
| let actual_address = &pt as *const Point as usize; |
| assert_eq!(intrinsic_reported_address, actual_address); |
| } |