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Added frame content size test within fuzzer

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This commit is contained in:
Yann Collet 2016-03-15 15:24:52 +01:00
parent 135f319bb2
commit 346bffbc68
2 changed files with 9 additions and 3 deletions
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2
lib/zstd_decompress.c
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@ -1033,7 +1033,7 @@ size_t ZSTD_decompress(void* dst, size_t maxDstSize, const void* src, size_t src
}
/* ******************************
/*_******************************
* Streaming Decompression API
********************************/
size_t ZSTD_nextSrcSizeToDecompress(ZSTD_DCtx* dctx)

10
programs/fuzzer.c
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@ -513,8 +513,7 @@ int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compressibilit
CHECK(ZSTD_isError(cSize), "ZSTD_compressCCtx failed");
/* compression failure test : too small dest buffer */
if (cSize > 3)
{
if (cSize > 3) {
const size_t missing = (FUZ_rand(&lseed) % (cSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */
const size_t tooSmallSize = cSize - missing;
static const U32 endMark = 0x4DC2B1A9;
@ -526,6 +525,13 @@ int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compressibilit
CHECK(endCheck != endMark, "ZSTD_compressCCtx : dst buffer overflow");
}
/* decompression header test */
{ ZSTD_frameParams dParams;
size_t const check = ZSTD_getFrameParams(&dParams, cBuffer, cSize);
CHECK(ZSTD_isError(check), "Frame Parameters extraction failed");
CHECK(dParams.frameContentSize != sampleSize, "Frame content size incorrect");
}
/* successfull decompression tests*/
dSupSize = (FUZ_rand(&lseed) & 1) ? 0 : (FUZ_rand(&lseed) & 31) + 1;
dSize = ZSTD_decompress(dstBuffer, sampleSize + dSupSize, cBuffer, cSize);