rust/src/test/run-pass/intrinsic-return-address.rs

44 lines
1.0 KiB
Rust

// 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 uint) -> Point {
unsafe {
*result = return_address() as uint;
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 uint;
assert_eq!(intrinsic_reported_address, actual_address);
}