/src/mozilla-central/ipc/glue/IPCMessageUtils.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
5 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #include "IPCMessageUtils.h" |
8 | | #include "mozilla/CheckedInt.h" |
9 | | |
10 | | namespace IPC { |
11 | | |
12 | | bool |
13 | | ByteLengthIsValid(uint32_t aNumElements, size_t aElementSize, int* aByteLength) |
14 | 0 | { |
15 | 0 | auto length = mozilla::CheckedInt<int>(aNumElements) * aElementSize; |
16 | 0 | if (!length.isValid()) { |
17 | 0 | return false; |
18 | 0 | } |
19 | 0 | *aByteLength = length.value(); |
20 | 0 | return true; |
21 | 0 | } |
22 | | |
23 | | } // namespace IPC |