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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <stdint.h>
#include <cassert>
#include <vector>
#include "zlib.h"
static Bytef buffer[256 * 1024] = {0};
// Entry point for LibFuzzer.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
// We need to strip the 'const' for zlib.
std::vector<unsigned char> input_buffer{data, data + size};
uLongf buffer_length = static_cast<uLongf>(sizeof(buffer));
z_stream stream;
stream.next_in = input_buffer.data();
stream.avail_in = size;
stream.total_in = size;
stream.next_out = buffer;
stream.avail_out = buffer_length;
stream.total_out = buffer_length;
stream.zalloc = Z_NULL;
stream.zfree = Z_NULL;
if (Z_OK != deflateInit(&stream, Z_DEFAULT_COMPRESSION)) {
deflateEnd(&stream);
assert(false);
}
auto deflate_set_dictionary_result =
deflateSetDictionary(&stream, data, size);
deflateEnd(&stream);
if (Z_OK != deflate_set_dictionary_result)
assert(false);
return 0;
}
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