2 * Copyright (c) 2016-present, Facebook, Inc.
5 * This source code is licensed under both the BSD-style license (found in the
6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
7 * in the COPYING file in the root directory of this source tree).
11 * This fuzz target attempts to comprss the fuzzed data with the simple
12 * compression function with an output buffer that may be too small to
13 * ensure that the compressor never crashes.
19 #include "fuzz_helpers.h"
21 #include "zstd_helpers.h"
22 #include "fuzz_data_producer.h"
24 static ZSTD_CCtx *cctx = NULL;
26 int LLVMFuzzerTestOneInput(const uint8_t *src, size_t size)
28 /* Give a random portion of src data to the producer, to use for
29 parameter generation. The rest will be used for (de)compression */
30 FUZZ_dataProducer_t *producer = FUZZ_dataProducer_create(src, size);
31 size = FUZZ_dataProducer_reserveDataPrefix(producer);
33 size_t const maxSize = ZSTD_compressBound(size);
34 size_t const bufSize = FUZZ_dataProducer_uint32Range(producer, 0, maxSize);
36 int const cLevel = FUZZ_dataProducer_int32Range(producer, kMinClevel, kMaxClevel);
39 cctx = ZSTD_createCCtx();
43 void *rBuf = malloc(bufSize);
45 ZSTD_compressCCtx(cctx, rBuf, bufSize, src, size, cLevel);
47 FUZZ_dataProducer_free(producer);
48 #ifndef STATEFUL_FUZZING
49 ZSTD_freeCCtx(cctx); cctx = NULL;