| // Copyright 2017 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. |
| |
| #![allow(stable_features)] |
| |
| #![feature(allocator_api, nonnull)] |
| |
| use std::alloc::{Alloc, Global, Layout, handle_alloc_error}; |
| |
| fn main() { |
| unsafe { |
| let ptr = Global.alloc_one::<i32>().unwrap_or_else(|_| { |
| handle_alloc_error(Layout::new::<i32>()) |
| }); |
| *ptr.as_ptr() = 4; |
| assert_eq!(*ptr.as_ptr(), 4); |
| Global.dealloc_one(ptr); |
| } |
| } |
