-// Copyright 2016 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.
-
//! Bindings to acquire a global named lock.
//!
//! This is intended to be used to synchronize multiple compiler processes to
//
// This will silently create one if it doesn't already exist, or it'll
// open up a handle to one if it already exists.
- let mutex = CreateMutexA(0 as *mut _, 0, cname.as_ptr() as *const u8);
+ let mutex = CreateMutexA(std::ptr::null_mut(), 0, cname.as_ptr() as *const u8);
if mutex.is_null() {
panic!("failed to create global mutex named `{}`: {}",
name,