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Fixed issue #62, reported by @luben

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This commit is contained in:
Yann Collet
2015-11-04 18:19:39 +01:00
parent 2c7ac7c055
commit 3e3582719c
2 changed files with 22 additions and 38 deletions
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programs/fuzzer.c
+11 -10
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@@ -328,14 +328,15 @@ int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compressibilit
sampleStart = FUZ_rand(&lseed) % (srcBufferSize - sampleSize);
crcOrig = XXH64(srcBuffer + sampleStart, sampleSize, 0);
/* HC compression test */
cLevel = (FUZ_rand(&lseed) & 3) + 2;
cSize = ZSTD_HC_compressCCtx(hcctx, cBuffer, cBufferSize, srcBuffer + sampleStart, sampleSize, cLevel);
CHECK(ZSTD_isError(cSize), "ZSTD_compress failed");
/* compression test */
/* covered by HC cLevel 1
cSize = ZSTD_compressCCtx(ctx, cBuffer, cBufferSize, srcBuffer + sampleStart, sampleSize);
CHECK(ZSTD_isError(cSize), "ZSTD_compress failed");
CHECK(ZSTD_isError(cSize), "ZSTD_compress failed"); */
/* HC compression test */
cLevel = (FUZ_rand(&lseed) & 3) +1;
cSize = ZSTD_HC_compressCCtx(hcctx, cBuffer, cBufferSize, srcBuffer + sampleStart, sampleSize, cLevel);
CHECK(ZSTD_isError(cSize), "ZSTD_HC_compressCCtx failed");
/* compression failure test : too small dest buffer */
if (cSize > 3)
@@ -346,16 +347,16 @@ int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compressibilit
static const U32 endMark = 0x4DC2B1A9;
U32 endCheck;
memcpy(dstBuffer+tooSmallSize, &endMark, 4);
errorCode = ZSTD_compressCCtx(ctx, dstBuffer, tooSmallSize, srcBuffer + sampleStart, sampleSize);
CHECK(!ZSTD_isError(errorCode), "ZSTD_compress should have failed ! (buffer too small)");
errorCode = ZSTD_HC_compressCCtx(hcctx, dstBuffer, tooSmallSize, srcBuffer + sampleStart, sampleSize, cLevel);
CHECK(!ZSTD_isError(errorCode), "ZSTD_HC_compressCCtx should have failed ! (buffer too small : %u < %u)", (U32)tooSmallSize, (U32)cSize);
memcpy(&endCheck, dstBuffer+tooSmallSize, 4);
CHECK(endCheck != endMark, "ZSTD_compress : dst buffer overflow");
CHECK(endCheck != endMark, "ZSTD_HC_compressCCtx : dst buffer overflow");
}
/* successfull decompression tests*/
dSupSize = (FUZ_rand(&lseed) & 1) ? 0 : (FUZ_rand(&lseed) & 31) + 1;
dSize = ZSTD_decompress(dstBuffer, sampleSize + dSupSize, cBuffer, cSize);
CHECK(dSize != sampleSize, "ZSTD_decompress failed (%s)", ZSTD_getErrorName(dSize));
CHECK(dSize != sampleSize, "ZSTD_decompress failed (%s) (srcSize : %u ; cSize : %u)", ZSTD_getErrorName(dSize), (U32)sampleSize, (U32)cSize);
crcDest = XXH64(dstBuffer, sampleSize, 0);
CHECK(crcOrig != crcDest, "dstBuffer corrupted (pos %u / %u)", (U32)findDiff(srcBuffer+sampleStart, dstBuffer, sampleSize), (U32)sampleSize);