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Fix bugs in simple decompression fuzzer (#3978)

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Fixes 2 issue in `simple_decompress.c`:
1. Wrong type used for storing the results of `ZSTD_findDecompressedSize` resulting in never matching to `ZSTD_CONTENTSIZE_ERROR` or `ZSTD_CONTENTSIZE_UNKNOWN`.

2. Experimental API is used (`ZSTD_findDecompressedSize`) without defining `ZSTD_STATIC_LINKING_ONLY`.
This commit is contained in:
Yonatan Komornik 2024-03-18 15:36:40 -07:00 committed by GitHub
parent cd4dba74de
commit 6a0052a409
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1 changed files with 4 additions and 1 deletions
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5
tests/fuzz/simple_decompress.c
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@ -16,6 +16,9 @@
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#define ZSTD_STATIC_LINKING_ONLY
#include "fuzz_helpers.h"
#include "zstd.h"
#include "fuzz_data_producer.h"
@ -40,7 +43,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *src, size_t size)
size_t const dSize = ZSTD_decompressDCtx(dctx, rBuf, bufSize, src, size);
if (!ZSTD_isError(dSize)) {
/* If decompression was successful, the content size from the frame header(s) should be valid. */
size_t const expectedSize = ZSTD_findDecompressedSize(src, size);
unsigned long long const expectedSize = ZSTD_findDecompressedSize(src, size);
FUZZ_ASSERT(expectedSize != ZSTD_CONTENTSIZE_ERROR);
FUZZ_ASSERT(expectedSize == ZSTD_CONTENTSIZE_UNKNOWN || expectedSize == dSize);
}