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| author | Yann Collet <cyan@fb.com> | 2022-07-01 21:53:16 (GMT) |
|---|---|---|
| committer | Yann Collet <cyan@fb.com> | 2022-07-01 21:53:16 (GMT) |
| commit | 5392531e8711a4b7f60927af1c0ac3cb1a91d2b0 (patch) | |
| tree | fc5dc25dc6eca09b6e8c499fbc59fcb7afe8c05a | |
| parent | 5065080664437efcb4215823b9ad95f5571a9d7c (diff) | |
| download | lz4-5392531e8711a4b7f60927af1c0ac3cb1a91d2b0.zip lz4-5392531e8711a4b7f60927af1c0ac3cb1a91d2b0.tar.gz lz4-5392531e8711a4b7f60927af1c0ac3cb1a91d2b0.tar.bz2 | |
added fuzzer test for LZ4F_uncompressedUpdate in frametest
| -rw-r--r-- | tests/frametest.c | 41 |
1 files changed, 29 insertions, 12 deletions
diff --git a/tests/frametest.c b/tests/frametest.c index 09def51..939d4c2 100644 --- a/tests/frametest.c +++ b/tests/frametest.c @@ -54,7 +54,7 @@ /* unoptimized version; solves endianness & alignment issues */ static void FUZ_writeLE32 (void* dstVoidPtr, U32 value32) { - BYTE* dstPtr = (BYTE*)dstVoidPtr; + BYTE* const dstPtr = (BYTE*)dstVoidPtr; dstPtr[0] = (BYTE) value32; dstPtr[1] = (BYTE)(value32 >> 8); dstPtr[2] = (BYTE)(value32 >> 16); @@ -1015,18 +1015,38 @@ int fuzzerTests(U32 seed, unsigned nbTests, unsigned startTest, double compressi while (ip < iend) { unsigned const nbBitsSeg = FUZ_rand(&randState) % maxBits; size_t const sampleMax = (FUZ_rand(&randState) & ((1<<nbBitsSeg)-1)) + 1; - size_t const iSize = MIN(sampleMax, (size_t)(iend-ip)); + size_t iSize = MIN(sampleMax, (size_t)(iend-ip)); size_t const oSize = LZ4F_compressBound(iSize, prefsPtr); - size_t flushedSize; cOptions.stableSrc = ((FUZ_rand(&randState) & 3) == 1); DISPLAYLEVEL(6, "Sending %u bytes to compress (stableSrc:%u) \n", (unsigned)iSize, cOptions.stableSrc); - flushedSize = LZ4F_compressUpdate(cCtx, op, oSize, ip, iSize, &cOptions); - CHECK(LZ4F_isError(flushedSize), "Compression failed (error %i : %s)", +#if 1 + /* insert uncompressed segment */ + if ((iSize>0) && !neverFlush && ((FUZ_rand(&randState) & 15) == 1)) { + size_t const uSize = FUZ_rand(&randState) % iSize; + DISPLAYLEVEL(2, "insert %zu / %zu (blockSize=%uKB) \n", uSize, iSize, 1 << (2*prefs.frameInfo.blockSizeID - 2)); + { size_t const flushedSize = LZ4F_uncompressedUpdate(cCtx, op, (size_t)(oend-op), ip, uSize, &cOptions); + CHECK(LZ4F_isError(flushedSize), "Insert uncompressed data failed (error %i : %s)", + (int)flushedSize, LZ4F_getErrorName(flushedSize)); + op += flushedSize; + ip += uSize; + } + iSize -= uSize; + { size_t const flushedSize = LZ4F_flush(cCtx, op, (size_t)(oend-op), &cOptions); + CHECK(LZ4F_isError(flushedSize), "Flush after LZ4F_uncompressedUpdate failed (error %i : %s)", + (int)flushedSize, LZ4F_getErrorName(flushedSize)); + op += flushedSize; + } + } +#endif + + { size_t const flushedSize = LZ4F_compressUpdate(cCtx, op, oSize, ip, iSize, &cOptions); + CHECK(LZ4F_isError(flushedSize), "Compression failed (error %i : %s)", (int)flushedSize, LZ4F_getErrorName(flushedSize)); - op += flushedSize; - ip += iSize; + op += flushedSize; + ip += iSize; + } { unsigned const forceFlush = neverFlush ? 0 : ((FUZ_rand(&randState) & 3) == 1); if (forceFlush) { @@ -1040,11 +1060,8 @@ int fuzzerTests(U32 seed, unsigned nbTests, unsigned startTest, double compressi op[3] = 0x80; /* 0x80000000U in little-endian format */ op += 4; if ((prefsPtr!= NULL) && prefsPtr->frameInfo.blockChecksumFlag) { - U32 const bc32 = XXH32(op, 0, 0); - op[0] = (BYTE)bc32; /* little endian format */ - op[1] = (BYTE)(bc32>>8); - op[2] = (BYTE)(bc32>>16); - op[3] = (BYTE)(bc32>>24); + /* add block checksum (even for empty blocks) */ + FUZ_writeLE32(op, XXH32(op, 0, 0)); op += 4; } } } } } /* while (ip<iend) */ |