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// Copyright 2012 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.
// pretty-expanded FIXME #23616
#![feature(allocator_api)]
use std::alloc::{Alloc, Global, Layout, handle_alloc_error};
use std::ptr::NonNull;
struct arena(());
struct Bcx<'a> {
fcx: &'a Fcx<'a>
}
struct Fcx<'a> {
arena: &'a arena,
ccx: &'a Ccx
}
struct Ccx {
x: isize
}
fn alloc<'a>(_bcx : &'a arena) -> &'a Bcx<'a> {
unsafe {
let layout = Layout::new::<Bcx>();
let ptr = Global.alloc(layout).unwrap_or_else(|_| handle_alloc_error(layout));
&*(ptr.as_ptr() as *const _)
}
}
fn h<'a>(bcx : &'a Bcx<'a>) -> &'a Bcx<'a> {
return alloc(bcx.fcx.arena);
}
fn g(fcx : &Fcx) {
let bcx = Bcx { fcx: fcx };
let bcx2 = h(&bcx);
unsafe {
Global.dealloc(NonNull::new_unchecked(bcx2 as *const _ as *mut _), Layout::new::<Bcx>());
}
}
fn f(ccx : &Ccx) {
let a = arena(());
let fcx = Fcx { arena: &a, ccx: ccx };
return g(&fcx);
}
pub fn main() {
let ccx = Ccx { x: 0 };
f(&ccx);
}
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