src/test/auxiliary/allocator-dummy.rs

// Copyright 2015 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.

// no-prefer-dynamic

#![feature(allocator, core_intrinsics, libc)]
#![allocator]
#![crate_type = "rlib"]
#![no_std]

extern crate libc;

pub static mut HITS: usize = 0;

#[no_mangle]
pub extern fn __rust_allocate(size: usize, align: usize) -> *mut u8 {
    unsafe {
        HITS += 1;
        libc::malloc(size as libc::size_t) as *mut u8
    }
}

#[no_mangle]
pub extern fn __rust_deallocate(ptr: *mut u8, old_size: usize, align: usize) {
    unsafe {
        HITS += 1;
        libc::free(ptr as *mut _)
    }
}

#[no_mangle]
pub extern fn __rust_reallocate(ptr: *mut u8, old_size: usize, size: usize,
                                align: usize) -> *mut u8 {
    unsafe {
        libc::realloc(ptr as *mut _, size as libc::size_t) as *mut u8
    }
}

#[no_mangle]
pub extern fn __rust_reallocate_inplace(ptr: *mut u8, old_size: usize,
                                        size: usize, align: usize) -> usize {
    unsafe { core::intrinsics::abort() }
}

#[no_mangle]
pub extern fn __rust_usable_size(size: usize, align: usize) -> usize {
    unsafe { core::intrinsics::abort() }
}