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1 | /* |
2 | * Copyright (c) Yann Collet, Meta Platforms, Inc. |
3 | * All rights reserved. |
4 | * |
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). |
8 | * You may select, at your option, one of the above-listed licenses. |
9 | */ |
10 | |
11 | #include "fuzz_third_party_seq_prod.h" |
12 | |
13 | #include <assert.h> |
14 | #include <stdlib.h> |
15 | #include <string.h> |
16 | |
17 | _Thread_local size_t threadLocalState; |
18 | |
19 | size_t FUZZ_seqProdSetup(void) { |
20 | threadLocalState = 0; |
21 | return 0; |
22 | } |
23 | |
24 | size_t FUZZ_seqProdTearDown(void) { |
25 | return 0; |
26 | } |
27 | |
28 | void* FUZZ_createSeqProdState(void) { |
29 | return calloc(1, sizeof(size_t)); |
30 | } |
31 | |
32 | size_t FUZZ_freeSeqProdState(void* state) { |
33 | free(state); |
34 | return 0; |
35 | } |
36 | |
37 | size_t FUZZ_thirdPartySeqProd( |
38 | void* sequenceProducerState, |
39 | ZSTD_Sequence* outSeqs, size_t outSeqsCapacity, |
40 | const void* src, size_t srcSize, |
41 | const void* dict, size_t dictSize, |
42 | int compressionLevel, |
43 | size_t windowSize |
44 | ) { |
45 | /* Try to catch unsafe use of the shared state */ |
46 | size_t* const sharedStatePtr = (size_t*)sequenceProducerState; |
47 | assert(*sharedStatePtr == threadLocalState); |
48 | (*sharedStatePtr)++; threadLocalState++; |
49 | |
50 | /* Check that fallback is enabled when FUZZ_THIRD_PARTY_SEQ_PROD is defined */ |
51 | return ZSTD_SEQUENCE_PRODUCER_ERROR; |
52 | } |