gecko-dev/xpcom/glue/nsTArray.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 capacity, size_t elemSize) {
  using mozilla::CheckedUint32;
  return ((CheckedUint32(capacity) * elemSize) * 2).isValid();
}