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Exercise ZSTD_findDecompressedSize() in the simple decompression fuzzer (#3959)

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* Improve decompression fuzzer

* Fix legacy frame header fuzzer crash, add unit test
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Elliot Gorokhovsky authored and GitHub committed 2024-03-12 17:07:06 -04:00
1 parent 92fbd42894
commit f65b9e27ce
3 files changed
+25 -1
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tests/zstreamtest.c
+9
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@@ -2408,6 +2408,15 @@ static int basicUnitTests(U32 seed, double compressibility, int bigTests)
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : Decoder should reject invalid frame header on legacy frames: ", testNb++);
{
const unsigned char compressed[] = { 0x26,0xb5,0x2f,0xfd,0x50,0x91,0xfd,0xd8,0xb5 };
const size_t compressedSize = 9;
size_t const dSize = ZSTD_decompress(NULL, 0, compressed, compressedSize);
CHECK(!ZSTD_isError(dSize), "must reject when legacy frame header is invalid");
}
DISPLAYLEVEL(3, "OK \n");
_end:
FUZ_freeDictionary(dictionary);
ZSTD_freeCStream(zc);