xpcom/glue/nsTArray.cpp
author Steve Fink <sfink@mozilla.com>
Fri, 25 Mar 2016 11:41:54 -0700
changeset 299732 5762a8fba027bb667a621deb50540ddd5a884193
parent 191470 6fdb8eb0faac3e5a0c1b97e82d5737efc524321f
child 309310 0c17b64aac661b09afadecbb7dfbd44575f42868
permissions -rw-r--r--
Bug 1259850 - Various refactorings, r=terrence MozReview-Commit-ID: GYrqbzK3U8W

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include <string.h>
#include "nsTArray.h"
#include "nsXPCOM.h"
#include "nsDebug.h"
#include "mozilla/CheckedInt.h"

nsTArrayHeader nsTArrayHeader::sEmptyHdr = { 0, 0, 0 };

bool
IsTwiceTheRequiredBytesRepresentableAsUint32(size_t aCapacity, size_t aElemSize)
{
  using mozilla::CheckedUint32;
  return ((CheckedUint32(aCapacity) * aElemSize) * 2).isValid();
}