forked from mirrors/gecko-dev
91a8f20d77
Differential Revision: https://phabricator.services.mozilla.com/D14436 --HG-- extra : moz-landing-system : lando
32 lines
1,013 B
C++
32 lines
1,013 B
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "FuzzingMutate.h"
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#include "FuzzingTraits.h"
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namespace mozilla {
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namespace fuzzing {
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/**
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* Randomly mutates a byte inside |aData| by using bit manipulation.
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*/
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/* static */
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void FuzzingMutate::ChangeBit(uint8_t* aData, size_t aLength) {
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size_t offset = RandomIntegerRange<size_t>(0, aLength);
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aData[offset] ^= (1 << FuzzingTraits::Random(9));
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}
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/**
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* Randomly replaces a byte inside |aData| with one in the range of [0, 255].
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*/
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/* static */
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void FuzzingMutate::ChangeByte(uint8_t* aData, size_t aLength) {
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size_t offset = RandomIntegerRange<size_t>(0, aLength);
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aData[offset] = RandomInteger<unsigned char>();
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}
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} // namespace fuzzing
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} // namespace mozilla
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