// 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 or the MIT license // , 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); }