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-rw-r--r--src/zstd/tests/zstreamtest.c1748
1 files changed, 1748 insertions, 0 deletions
diff --git a/src/zstd/tests/zstreamtest.c b/src/zstd/tests/zstreamtest.c
new file mode 100644
index 00000000..8b4c8369
--- /dev/null
+++ b/src/zstd/tests/zstreamtest.c
@@ -0,0 +1,1748 @@
+/*
+ * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree) and the GPLv2 (found
+ * in the COPYING file in the root directory of this source tree).
+ * You may select, at your option, one of the above-listed licenses.
+ */
+
+
+/*-************************************
+* Compiler specific
+**************************************/
+#ifdef _MSC_VER /* Visual Studio */
+# define _CRT_SECURE_NO_WARNINGS /* fgets */
+# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
+# pragma warning(disable : 4146) /* disable: C4146: minus unsigned expression */
+#endif
+
+
+/*-************************************
+* Includes
+**************************************/
+#include <stdlib.h> /* free */
+#include <stdio.h> /* fgets, sscanf */
+#include <time.h> /* clock_t, clock() */
+#include <string.h> /* strcmp */
+#include <assert.h> /* assert */
+#include "mem.h"
+#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_maxCLevel, ZSTD_customMem, ZSTD_getDictID_fromFrame */
+#include "zstd.h" /* ZSTD_compressBound */
+#include "zstd_errors.h" /* ZSTD_error_srcSize_wrong */
+#include "zstdmt_compress.h"
+#include "zdict.h" /* ZDICT_trainFromBuffer */
+#include "datagen.h" /* RDG_genBuffer */
+#define XXH_STATIC_LINKING_ONLY /* XXH64_state_t */
+#include "xxhash.h" /* XXH64_* */
+
+
+/*-************************************
+* Constants
+**************************************/
+#define KB *(1U<<10)
+#define MB *(1U<<20)
+#define GB *(1U<<30)
+
+static const U32 nbTestsDefault = 10000;
+static const U32 g_cLevelMax_smallTests = 10;
+#define COMPRESSIBLE_NOISE_LENGTH (10 MB)
+#define FUZ_COMPRESSIBILITY_DEFAULT 50
+static const U32 prime32 = 2654435761U;
+
+
+/*-************************************
+* Display Macros
+**************************************/
+#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
+#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { \
+ DISPLAY(__VA_ARGS__); \
+ if (g_displayLevel>=4) fflush(stderr); }
+static U32 g_displayLevel = 2;
+
+#define DISPLAYUPDATE(l, ...) if (g_displayLevel>=l) { \
+ if ((FUZ_GetClockSpan(g_displayClock) > g_refreshRate) || (g_displayLevel>=4)) \
+ { g_displayClock = clock(); DISPLAY(__VA_ARGS__); \
+ if (g_displayLevel>=4) fflush(stderr); } }
+static const clock_t g_refreshRate = CLOCKS_PER_SEC / 6;
+static clock_t g_displayClock = 0;
+
+static clock_t g_clockTime = 0;
+
+
+/*-*******************************************************
+* Fuzzer functions
+*********************************************************/
+#define MAX(a,b) ((a)>(b)?(a):(b))
+
+static clock_t FUZ_GetClockSpan(clock_t clockStart)
+{
+ return clock() - clockStart; /* works even when overflow. Max span ~ 30 mn */
+}
+
+/*! FUZ_rand() :
+ @return : a 27 bits random value, from a 32-bits `seed`.
+ `seed` is also modified */
+#define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r)))
+unsigned int FUZ_rand(unsigned int* seedPtr)
+{
+ static const U32 prime2 = 2246822519U;
+ U32 rand32 = *seedPtr;
+ rand32 *= prime32;
+ rand32 += prime2;
+ rand32 = FUZ_rotl32(rand32, 13);
+ *seedPtr = rand32;
+ return rand32 >> 5;
+}
+
+#define CHECK_Z(f) { \
+ size_t const err = f; \
+ if (ZSTD_isError(err)) { \
+ DISPLAY("Error => %s : %s ", \
+ #f, ZSTD_getErrorName(err)); \
+ DISPLAY(" (seed %u, test nb %u) \n", seed, testNb); \
+ goto _output_error; \
+} }
+
+
+/*======================================================
+* Basic Unit tests
+======================================================*/
+
+typedef struct {
+ void* start;
+ size_t size;
+ size_t filled;
+} buffer_t;
+
+static const buffer_t g_nullBuffer = { NULL, 0 , 0 };
+
+static buffer_t FUZ_createDictionary(const void* src, size_t srcSize, size_t blockSize, size_t requestedDictSize)
+{
+ buffer_t dict = { NULL, 0, 0 };
+ size_t const nbBlocks = (srcSize + (blockSize-1)) / blockSize;
+ size_t* const blockSizes = (size_t*) malloc(nbBlocks * sizeof(size_t));
+ if (!blockSizes) return dict;
+ dict.start = malloc(requestedDictSize);
+ if (!dict.start) { free(blockSizes); return dict; }
+ { size_t nb;
+ for (nb=0; nb<nbBlocks-1; nb++) blockSizes[nb] = blockSize;
+ blockSizes[nbBlocks-1] = srcSize - (blockSize * (nbBlocks-1));
+ }
+ { size_t const dictSize = ZDICT_trainFromBuffer(dict.start, requestedDictSize, src, blockSizes, (unsigned)nbBlocks);
+ free(blockSizes);
+ if (ZDICT_isError(dictSize)) { free(dict.start); return g_nullBuffer; }
+ dict.size = requestedDictSize;
+ dict.filled = dictSize;
+ return dict; /* how to return dictSize ? */
+ }
+}
+
+static void FUZ_freeDictionary(buffer_t dict)
+{
+ free(dict.start);
+}
+
+
+static int basicUnitTests(U32 seed, double compressibility, ZSTD_customMem customMem)
+{
+ size_t const CNBufferSize = COMPRESSIBLE_NOISE_LENGTH;
+ void* CNBuffer = malloc(CNBufferSize);
+ size_t const skippableFrameSize = 11;
+ size_t const compressedBufferSize = (8 + skippableFrameSize) + ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH);
+ void* compressedBuffer = malloc(compressedBufferSize);
+ size_t const decodedBufferSize = CNBufferSize;
+ void* decodedBuffer = malloc(decodedBufferSize);
+ size_t cSize;
+ int testResult = 0;
+ U32 testNb = 1;
+ ZSTD_CStream* zc = ZSTD_createCStream_advanced(customMem);
+ ZSTD_DStream* zd = ZSTD_createDStream_advanced(customMem);
+ ZSTDMT_CCtx* mtctx = ZSTDMT_createCCtx(2);
+
+ ZSTD_inBuffer inBuff, inBuff2;
+ ZSTD_outBuffer outBuff;
+ buffer_t dictionary = g_nullBuffer;
+ size_t const dictSize = 128 KB;
+ unsigned dictID = 0;
+
+ /* Create compressible test buffer */
+ if (!CNBuffer || !compressedBuffer || !decodedBuffer || !zc || !zd) {
+ DISPLAY("Not enough memory, aborting \n");
+ goto _output_error;
+ }
+ RDG_genBuffer(CNBuffer, CNBufferSize, compressibility, 0., seed);
+
+ /* Create dictionary */
+ DISPLAYLEVEL(3, "creating dictionary for unit tests \n");
+ dictionary = FUZ_createDictionary(CNBuffer, CNBufferSize / 2, 8 KB, 40 KB);
+ if (!dictionary.start) {
+ DISPLAY("Error creating dictionary, aborting \n");
+ goto _output_error;
+ }
+ dictID = ZDICT_getDictID(dictionary.start, dictionary.filled);
+
+ /* generate skippable frame */
+ MEM_writeLE32(compressedBuffer, ZSTD_MAGIC_SKIPPABLE_START);
+ MEM_writeLE32(((char*)compressedBuffer)+4, (U32)skippableFrameSize);
+ cSize = skippableFrameSize + 8;
+
+ /* Basic compression test */
+ DISPLAYLEVEL(3, "test%3i : compress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
+ CHECK_Z( ZSTD_initCStream_usingDict(zc, CNBuffer, dictSize, 1) );
+ outBuff.dst = (char*)(compressedBuffer)+cSize;
+ outBuff.size = compressedBufferSize;
+ outBuff.pos = 0;
+ inBuff.src = CNBuffer;
+ inBuff.size = CNBufferSize;
+ inBuff.pos = 0;
+ CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
+ if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
+ { size_t const r = ZSTD_endStream(zc, &outBuff);
+ if (r != 0) goto _output_error; } /* error, or some data not flushed */
+ cSize += outBuff.pos;
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100);
+
+ /* context size functions */
+ DISPLAYLEVEL(3, "test%3i : estimate CStream size : ", testNb++);
+ { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBufferSize, dictSize);
+ size_t const cstreamSize = ZSTD_estimateCStreamSize_usingCParams(cParams);
+ size_t const cdictSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byCopy); /* uses ZSTD_initCStream_usingDict() */
+ if (ZSTD_isError(cstreamSize)) goto _output_error;
+ if (ZSTD_isError(cdictSize)) goto _output_error;
+ DISPLAYLEVEL(3, "OK (%u bytes) \n", (U32)(cstreamSize + cdictSize));
+ }
+
+ DISPLAYLEVEL(3, "test%3i : check actual CStream size : ", testNb++);
+ { size_t const s = ZSTD_sizeof_CStream(zc);
+ if (ZSTD_isError(s)) goto _output_error;
+ DISPLAYLEVEL(3, "OK (%u bytes) \n", (U32)s);
+ }
+
+ /* Attempt bad compression parameters */
+ DISPLAYLEVEL(3, "test%3i : use bad compression parameters : ", testNb++);
+ { size_t r;
+ ZSTD_parameters params = ZSTD_getParams(1, 0, 0);
+ params.cParams.searchLength = 2;
+ r = ZSTD_initCStream_advanced(zc, NULL, 0, params, 0);
+ if (!ZSTD_isError(r)) goto _output_error;
+ DISPLAYLEVEL(3, "init error : %s \n", ZSTD_getErrorName(r));
+ }
+
+ /* skippable frame test */
+ DISPLAYLEVEL(3, "test%3i : decompress skippable frame : ", testNb++);
+ CHECK_Z( ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize) );
+ inBuff.src = compressedBuffer;
+ inBuff.size = cSize;
+ inBuff.pos = 0;
+ outBuff.dst = decodedBuffer;
+ outBuff.size = CNBufferSize;
+ outBuff.pos = 0;
+ { size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ DISPLAYLEVEL(5, " ( ZSTD_decompressStream => %u ) ", (U32)r);
+ if (r != 0) goto _output_error;
+ }
+ if (outBuff.pos != 0) goto _output_error; /* skippable frame output len is 0 */
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Basic decompression test */
+ inBuff2 = inBuff;
+ DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
+ ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
+ CHECK_Z( ZSTD_setDStreamParameter(zd, DStream_p_maxWindowSize, 1000000000) ); /* large limit */
+ { size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ if (remaining != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */
+ if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
+ if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Re-use without init */
+ DISPLAYLEVEL(3, "test%3i : decompress again without init (re-use previous settings): ", testNb++);
+ outBuff.pos = 0;
+ { size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inBuff2);
+ if (remaining != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */
+ if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
+ if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* check regenerated data is byte exact */
+ DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
+ { size_t i;
+ for (i=0; i<CNBufferSize; i++) {
+ if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error;
+ } }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* context size functions */
+ DISPLAYLEVEL(3, "test%3i : estimate DStream size : ", testNb++);
+ { ZSTD_frameHeader fhi;
+ const void* cStart = (char*)compressedBuffer + (skippableFrameSize + 8);
+ size_t const gfhError = ZSTD_getFrameHeader(&fhi, cStart, cSize);
+ if (gfhError!=0) goto _output_error;
+ DISPLAYLEVEL(5, " (windowSize : %u) ", (U32)fhi.windowSize);
+ { size_t const s = ZSTD_estimateDStreamSize(fhi.windowSize)
+ /* uses ZSTD_initDStream_usingDict() */
+ + ZSTD_estimateDDictSize(dictSize, ZSTD_dlm_byCopy);
+ if (ZSTD_isError(s)) goto _output_error;
+ DISPLAYLEVEL(3, "OK (%u bytes) \n", (U32)s);
+ } }
+
+ DISPLAYLEVEL(3, "test%3i : check actual DStream size : ", testNb++);
+ { size_t const s = ZSTD_sizeof_DStream(zd);
+ if (ZSTD_isError(s)) goto _output_error;
+ DISPLAYLEVEL(3, "OK (%u bytes) \n", (U32)s);
+ }
+
+ /* Byte-by-byte decompression test */
+ DISPLAYLEVEL(3, "test%3i : decompress byte-by-byte : ", testNb++);
+ { /* skippable frame */
+ size_t r = 1;
+ ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
+ inBuff.src = compressedBuffer;
+ outBuff.dst = decodedBuffer;
+ inBuff.pos = 0;
+ outBuff.pos = 0;
+ while (r) { /* skippable frame */
+ inBuff.size = inBuff.pos + 1;
+ outBuff.size = outBuff.pos + 1;
+ r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ if (ZSTD_isError(r)) goto _output_error;
+ }
+ /* normal frame */
+ ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
+ r=1;
+ while (r) {
+ inBuff.size = inBuff.pos + 1;
+ outBuff.size = outBuff.pos + 1;
+ r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ if (ZSTD_isError(r)) goto _output_error;
+ }
+ }
+ if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
+ if (inBuff.pos != cSize) goto _output_error; /* should have read the entire frame */
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* check regenerated data is byte exact */
+ DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
+ { size_t i;
+ for (i=0; i<CNBufferSize; i++) {
+ if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error;;
+ } }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* _srcSize compression test */
+ DISPLAYLEVEL(3, "test%3i : compress_srcSize %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
+ ZSTD_initCStream_srcSize(zc, 1, CNBufferSize);
+ outBuff.dst = (char*)(compressedBuffer);
+ outBuff.size = compressedBufferSize;
+ outBuff.pos = 0;
+ inBuff.src = CNBuffer;
+ inBuff.size = CNBufferSize;
+ inBuff.pos = 0;
+ CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
+ if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
+ { size_t const r = ZSTD_endStream(zc, &outBuff);
+ if (r != 0) goto _output_error; } /* error, or some data not flushed */
+ { unsigned long long origSize = ZSTD_findDecompressedSize(outBuff.dst, outBuff.pos);
+ if ((size_t)origSize != CNBufferSize) goto _output_error; } /* exact original size must be present */
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100);
+
+ /* wrong _srcSize compression test */
+ DISPLAYLEVEL(3, "test%3i : wrong srcSize : %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH-1);
+ ZSTD_initCStream_srcSize(zc, 1, CNBufferSize-1);
+ outBuff.dst = (char*)(compressedBuffer);
+ outBuff.size = compressedBufferSize;
+ outBuff.pos = 0;
+ inBuff.src = CNBuffer;
+ inBuff.size = CNBufferSize;
+ inBuff.pos = 0;
+ CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
+ if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
+ { size_t const r = ZSTD_endStream(zc, &outBuff);
+ if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; /* must fail : wrong srcSize */
+ DISPLAYLEVEL(3, "OK (error detected : %s) \n", ZSTD_getErrorName(r)); }
+
+ /* Complex context re-use scenario */
+ DISPLAYLEVEL(3, "test%3i : context re-use : ", testNb++);
+ ZSTD_freeCStream(zc);
+ zc = ZSTD_createCStream_advanced(customMem);
+ if (zc==NULL) goto _output_error; /* memory allocation issue */
+ /* use 1 */
+ { size_t const inSize = 513;
+ DISPLAYLEVEL(5, "use1 ");
+ ZSTD_initCStream_advanced(zc, NULL, 0, ZSTD_getParams(19, inSize, 0), inSize); /* needs btopt + search3 to trigger hashLog3 */
+ inBuff.src = CNBuffer;
+ inBuff.size = inSize;
+ inBuff.pos = 0;
+ outBuff.dst = (char*)(compressedBuffer)+cSize;
+ outBuff.size = ZSTD_compressBound(inSize);
+ outBuff.pos = 0;
+ DISPLAYLEVEL(5, "compress1 ");
+ CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
+ if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
+ DISPLAYLEVEL(5, "end1 ");
+ { size_t const r = ZSTD_endStream(zc, &outBuff);
+ if (r != 0) goto _output_error; } /* error, or some data not flushed */
+ }
+ /* use 2 */
+ { size_t const inSize = 1025; /* will not continue, because tables auto-adjust and are therefore different size */
+ DISPLAYLEVEL(5, "use2 ");
+ ZSTD_initCStream_advanced(zc, NULL, 0, ZSTD_getParams(19, inSize, 0), inSize); /* needs btopt + search3 to trigger hashLog3 */
+ inBuff.src = CNBuffer;
+ inBuff.size = inSize;
+ inBuff.pos = 0;
+ outBuff.dst = (char*)(compressedBuffer)+cSize;
+ outBuff.size = ZSTD_compressBound(inSize);
+ outBuff.pos = 0;
+ DISPLAYLEVEL(5, "compress2 ");
+ CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
+ if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
+ DISPLAYLEVEL(5, "end2 ");
+ { size_t const r = ZSTD_endStream(zc, &outBuff);
+ if (r != 0) goto _output_error; } /* error, or some data not flushed */
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* CDict scenario */
+ DISPLAYLEVEL(3, "test%3i : digested dictionary : ", testNb++);
+ { ZSTD_CDict* const cdict = ZSTD_createCDict(dictionary.start, dictionary.filled, 1 /*byRef*/ );
+ size_t const initError = ZSTD_initCStream_usingCDict(zc, cdict);
+ if (ZSTD_isError(initError)) goto _output_error;
+ cSize = 0;
+ outBuff.dst = compressedBuffer;
+ outBuff.size = compressedBufferSize;
+ outBuff.pos = 0;
+ inBuff.src = CNBuffer;
+ inBuff.size = CNBufferSize;
+ inBuff.pos = 0;
+ CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
+ if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
+ { size_t const r = ZSTD_endStream(zc, &outBuff);
+ if (r != 0) goto _output_error; } /* error, or some data not flushed */
+ cSize = outBuff.pos;
+ ZSTD_freeCDict(cdict);
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBufferSize*100);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : check CStream size : ", testNb++);
+ { size_t const s = ZSTD_sizeof_CStream(zc);
+ if (ZSTD_isError(s)) goto _output_error;
+ DISPLAYLEVEL(3, "OK (%u bytes) \n", (U32)s);
+ }
+
+ DISPLAYLEVEL(4, "test%3i : check Dictionary ID : ", testNb++);
+ { unsigned const dID = ZSTD_getDictID_fromFrame(compressedBuffer, cSize);
+ if (dID != dictID) goto _output_error;
+ DISPLAYLEVEL(4, "OK (%u) \n", dID);
+ }
+
+ /* DDict scenario */
+ DISPLAYLEVEL(3, "test%3i : decompress %u bytes with digested dictionary : ", testNb++, (U32)CNBufferSize);
+ { ZSTD_DDict* const ddict = ZSTD_createDDict(dictionary.start, dictionary.filled);
+ size_t const initError = ZSTD_initDStream_usingDDict(zd, ddict);
+ if (ZSTD_isError(initError)) goto _output_error;
+ inBuff.src = compressedBuffer;
+ inBuff.size = cSize;
+ inBuff.pos = 0;
+ outBuff.dst = decodedBuffer;
+ outBuff.size = CNBufferSize;
+ outBuff.pos = 0;
+ { size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ if (r != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */
+ if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
+ if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */
+ ZSTD_freeDDict(ddict);
+ DISPLAYLEVEL(3, "OK \n");
+ }
+
+ /* test ZSTD_setDStreamParameter() resilience */
+ DISPLAYLEVEL(3, "test%3i : wrong parameter for ZSTD_setDStreamParameter(): ", testNb++);
+ { size_t const r = ZSTD_setDStreamParameter(zd, (ZSTD_DStreamParameter_e)999, 1); /* large limit */
+ if (!ZSTD_isError(r)) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Memory restriction */
+ DISPLAYLEVEL(3, "test%3i : maxWindowSize < frame requirement : ", testNb++);
+ ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
+ CHECK_Z( ZSTD_setDStreamParameter(zd, DStream_p_maxWindowSize, 1000) ); /* too small limit */
+ inBuff.src = compressedBuffer;
+ inBuff.size = cSize;
+ inBuff.pos = 0;
+ outBuff.dst = decodedBuffer;
+ outBuff.size = CNBufferSize;
+ outBuff.pos = 0;
+ { size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ if (!ZSTD_isError(r)) goto _output_error; /* must fail : frame requires > 100 bytes */
+ DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r)); }
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_usingCDict_advanced with masked dictID : ", testNb++);
+ { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBufferSize, dictionary.filled);
+ ZSTD_frameParameters const fParams = { 1 /* contentSize */, 1 /* checksum */, 1 /* noDictID */};
+ ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictionary.start, dictionary.filled, ZSTD_dlm_byRef, ZSTD_dm_auto, cParams, customMem);
+ size_t const initError = ZSTD_initCStream_usingCDict_advanced(zc, cdict, fParams, CNBufferSize);
+ if (ZSTD_isError(initError)) goto _output_error;
+ cSize = 0;
+ outBuff.dst = compressedBuffer;
+ outBuff.size = compressedBufferSize;
+ outBuff.pos = 0;
+ inBuff.src = CNBuffer;
+ inBuff.size = CNBufferSize;
+ inBuff.pos = 0;
+ CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
+ if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
+ { size_t const r = ZSTD_endStream(zc, &outBuff);
+ if (r != 0) goto _output_error; } /* error, or some data not flushed */
+ cSize = outBuff.pos;
+ ZSTD_freeCDict(cdict);
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBufferSize*100);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : try retrieving dictID from frame : ", testNb++);
+ { U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize);
+ if (did != 0) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK (not detected) \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress without dictionary : ", testNb++);
+ { size_t const r = ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize);
+ if (!ZSTD_isError(r)) goto _output_error; /* must fail : dictionary not used */
+ DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r));
+ }
+
+ DISPLAYLEVEL(3, "test%3i : compress with ZSTD_CCtx_refPrefix : ", testNb++);
+ CHECK_Z( ZSTD_CCtx_refPrefix(zc, dictionary.start, dictionary.filled) );
+ outBuff.dst = compressedBuffer;
+ outBuff.size = compressedBufferSize;
+ outBuff.pos = 0;
+ inBuff.src = CNBuffer;
+ inBuff.size = CNBufferSize;
+ inBuff.pos = 0;
+ CHECK_Z( ZSTD_compress_generic(zc, &outBuff, &inBuff, ZSTD_e_end) );
+ if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
+ cSize = outBuff.pos;
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBufferSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : decompress with dictionary : ", testNb++);
+ { size_t const r = ZSTD_decompress_usingDict(zd,
+ decodedBuffer, CNBufferSize,
+ compressedBuffer, cSize,
+ dictionary.start, dictionary.filled);
+ if (ZSTD_isError(r)) goto _output_error; /* must fail : dictionary not used */
+ DISPLAYLEVEL(3, "OK \n");
+ }
+
+ DISPLAYLEVEL(3, "test%3i : decompress without dictionary (should fail): ", testNb++);
+ { size_t const r = ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize);
+ if (!ZSTD_isError(r)) goto _output_error; /* must fail : dictionary not used */
+ DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r));
+ }
+
+ DISPLAYLEVEL(3, "test%3i : compress again with ZSTD_compress_generic : ", testNb++);
+ outBuff.dst = compressedBuffer;
+ outBuff.size = compressedBufferSize;
+ outBuff.pos = 0;
+ inBuff.src = CNBuffer;
+ inBuff.size = CNBufferSize;
+ inBuff.pos = 0;
+ CHECK_Z( ZSTD_compress_generic(zc, &outBuff, &inBuff, ZSTD_e_end) );
+ if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
+ cSize = outBuff.pos;
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBufferSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : decompress without dictionary (should work): ", testNb++);
+ CHECK_Z( ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize) );
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Empty srcSize */
+ DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_advanced with pledgedSrcSize=0 and dict : ", testNb++);
+ { ZSTD_parameters params = ZSTD_getParams(5, 0, 0);
+ params.fParams.contentSizeFlag = 1;
+ CHECK_Z( ZSTD_initCStream_advanced(zc, dictionary.start, dictionary.filled, params, 0) );
+ } /* cstream advanced shall write content size = 0 */
+ inBuff.src = CNBuffer;
+ inBuff.size = 0;
+ inBuff.pos = 0;
+ outBuff.dst = compressedBuffer;
+ outBuff.size = compressedBufferSize;
+ outBuff.pos = 0;
+ CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
+ if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error;
+ cSize = outBuff.pos;
+ if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != 0) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : pledgedSrcSize == 0 behaves properly : ", testNb++);
+ { ZSTD_parameters params = ZSTD_getParams(5, 0, 0);
+ params.fParams.contentSizeFlag = 1;
+ CHECK_Z( ZSTD_initCStream_advanced(zc, NULL, 0, params, 0) );
+ } /* cstream advanced shall write content size = 0 */
+ inBuff.src = CNBuffer;
+ inBuff.size = 0;
+ inBuff.pos = 0;
+ outBuff.dst = compressedBuffer;
+ outBuff.size = compressedBufferSize;
+ outBuff.pos = 0;
+ CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
+ if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error;
+ cSize = outBuff.pos;
+ if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != 0) goto _output_error;
+
+ ZSTD_resetCStream(zc, 0); /* resetCStream should treat 0 as unknown */
+ inBuff.src = CNBuffer;
+ inBuff.size = 0;
+ inBuff.pos = 0;
+ outBuff.dst = compressedBuffer;
+ outBuff.size = compressedBufferSize;
+ outBuff.pos = 0;
+ CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
+ if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error;
+ cSize = outBuff.pos;
+ if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Basic multithreading compression test */
+ DISPLAYLEVEL(3, "test%3i : compress %u bytes with multiple threads : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
+ { ZSTD_parameters const params = ZSTD_getParams(1, 0, 0);
+ CHECK_Z( ZSTDMT_initCStream_advanced(mtctx, CNBuffer, dictSize, params, CNBufferSize) );
+ }
+ outBuff.dst = (char*)(compressedBuffer);
+ outBuff.size = compressedBufferSize;
+ outBuff.pos = 0;
+ inBuff.src = CNBuffer;
+ inBuff.size = CNBufferSize;
+ inBuff.pos = 0;
+ CHECK_Z( ZSTDMT_compressStream_generic(mtctx, &outBuff, &inBuff, ZSTD_e_end) );
+ if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
+ { size_t const r = ZSTDMT_endStream(mtctx, &outBuff);
+ if (r != 0) goto _output_error; } /* error, or some data not flushed */
+ DISPLAYLEVEL(3, "OK \n");
+
+
+ /* Overlen overwriting window data bug */
+ DISPLAYLEVEL(3, "test%3i : wildcopy doesn't overwrite potential match data : ", testNb++);
+ { /* This test has a window size of 1024 bytes and consists of 3 blocks:
+ 1. 'a' repeated 517 times
+ 2. 'b' repeated 516 times
+ 3. a compressed block with no literals and 3 sequence commands:
+ litlength = 0, offset = 24, match length = 24
+ litlength = 0, offset = 24, match length = 3 (this one creates an overlength write of length 2*WILDCOPY_OVERLENGTH - 3)
+ litlength = 0, offset = 1021, match length = 3 (this one will try to read from overwritten data if the buffer is too small) */
+
+ const char* testCase =
+ "\x28\xB5\x2F\xFD\x04\x00\x4C\x00\x00\x10\x61\x61\x01\x00\x00\x2A"
+ "\x80\x05\x44\x00\x00\x08\x62\x01\x00\x00\x2A\x20\x04\x5D\x00\x00"
+ "\x00\x03\x40\x00\x00\x64\x60\x27\xB0\xE0\x0C\x67\x62\xCE\xE0";
+ ZSTD_DStream* const zds = ZSTD_createDStream();
+ if (zds==NULL) goto _output_error;
+
+ CHECK_Z( ZSTD_initDStream(zds) );
+ inBuff.src = testCase;
+ inBuff.size = 47;
+ inBuff.pos = 0;
+ outBuff.dst = decodedBuffer;
+ outBuff.size = CNBufferSize;
+ outBuff.pos = 0;
+
+ while (inBuff.pos < inBuff.size) {
+ CHECK_Z( ZSTD_decompressStream(zds, &outBuff, &inBuff) );
+ }
+
+ ZSTD_freeDStream(zds);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+_end:
+ FUZ_freeDictionary(dictionary);
+ ZSTD_freeCStream(zc);
+ ZSTD_freeDStream(zd);
+ ZSTDMT_freeCCtx(mtctx);
+ free(CNBuffer);
+ free(compressedBuffer);
+ free(decodedBuffer);
+ return testResult;
+
+_output_error:
+ testResult = 1;
+ DISPLAY("Error detected in Unit tests ! \n");
+ goto _end;
+}
+
+
+/* ====== Fuzzer tests ====== */
+
+static size_t findDiff(const void* buf1, const void* buf2, size_t max)
+{
+ const BYTE* b1 = (const BYTE*)buf1;
+ const BYTE* b2 = (const BYTE*)buf2;
+ size_t u;
+ for (u=0; u<max; u++) {
+ if (b1[u] != b2[u]) break;
+ }
+ DISPLAY("Error at position %u / %u \n", (U32)u, (U32)max);
+ DISPLAY(" %02X %02X %02X :%02X: %02X %02X %02X %02X %02X \n",
+ b1[u-3], b1[u-2], b1[u-1], b1[u-0], b1[u+1], b1[u+2], b1[u+3], b1[u+4], b1[u+5]);
+ DISPLAY(" %02X %02X %02X :%02X: %02X %02X %02X %02X %02X \n",
+ b2[u-3], b2[u-2], b2[u-1], b2[u-0], b2[u+1], b2[u+2], b2[u+3], b2[u+4], b2[u+5]);
+ return u;
+}
+
+static size_t FUZ_rLogLength(U32* seed, U32 logLength)
+{
+ size_t const lengthMask = ((size_t)1 << logLength) - 1;
+ return (lengthMask+1) + (FUZ_rand(seed) & lengthMask);
+}
+
+static size_t FUZ_randomLength(U32* seed, U32 maxLog)
+{
+ U32 const logLength = FUZ_rand(seed) % maxLog;
+ return FUZ_rLogLength(seed, logLength);
+}
+
+#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
+
+/* Return value in range minVal <= v <= maxVal */
+static U32 FUZ_randomClampedLength(U32* seed, U32 minVal, U32 maxVal)
+{
+ U32 const mod = maxVal < minVal ? 1 : (maxVal + 1) - minVal;
+ return (U32)((FUZ_rand(seed) % mod) + minVal);
+}
+
+#define CHECK(cond, ...) { \
+ if (cond) { \
+ DISPLAY("Error => "); \
+ DISPLAY(__VA_ARGS__); \
+ DISPLAY(" (seed %u, test nb %u) \n", seed, testNb); \
+ goto _output_error; \
+} }
+
+static int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compressibility, int bigTests)
+{
+ U32 const maxSrcLog = bigTests ? 24 : 22;
+ static const U32 maxSampleLog = 19;
+ size_t const srcBufferSize = (size_t)1<<maxSrcLog;
+ BYTE* cNoiseBuffer[5];
+ size_t const copyBufferSize = srcBufferSize + (1<<maxSampleLog);
+ BYTE* const copyBuffer = (BYTE*)malloc (copyBufferSize);
+ size_t const cBufferSize = ZSTD_compressBound(srcBufferSize);
+ BYTE* const cBuffer = (BYTE*)malloc (cBufferSize);
+ size_t const dstBufferSize = srcBufferSize;
+ BYTE* const dstBuffer = (BYTE*)malloc (dstBufferSize);
+ U32 result = 0;
+ U32 testNb = 0;
+ U32 coreSeed = seed;
+ ZSTD_CStream* zc = ZSTD_createCStream(); /* will be re-created sometimes */
+ ZSTD_DStream* zd = ZSTD_createDStream(); /* will be re-created sometimes */
+ ZSTD_DStream* const zd_noise = ZSTD_createDStream();
+ clock_t const startClock = clock();
+ const BYTE* dict = NULL; /* can keep same dict on 2 consecutive tests */
+ size_t dictSize = 0;
+ U32 oldTestLog = 0;
+ U32 const cLevelMax = bigTests ? (U32)ZSTD_maxCLevel() : g_cLevelMax_smallTests;
+
+ /* allocations */
+ cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize);
+ CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] ||
+ !copyBuffer || !dstBuffer || !cBuffer || !zc || !zd || !zd_noise ,
+ "Not enough memory, fuzzer tests cancelled");
+
+ /* Create initial samples */
+ RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */
+ RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */
+ RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed);
+ RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */
+ RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */
+ memset(copyBuffer, 0x65, copyBufferSize); /* make copyBuffer considered initialized */
+ ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */
+
+ /* catch up testNb */
+ for (testNb=1; testNb < startTest; testNb++)
+ FUZ_rand(&coreSeed);
+
+ /* test loop */
+ for ( ; (testNb <= nbTests) || (FUZ_GetClockSpan(startClock) < g_clockTime) ; testNb++ ) {
+ U32 lseed;
+ const BYTE* srcBuffer;
+ size_t totalTestSize, totalGenSize, cSize;
+ XXH64_state_t xxhState;
+ U64 crcOrig;
+ U32 resetAllowed = 1;
+ size_t maxTestSize;
+
+ /* init */
+ if (nbTests >= testNb) { DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); }
+ else { DISPLAYUPDATE(2, "\r%6u ", testNb); }
+ FUZ_rand(&coreSeed);
+ lseed = coreSeed ^ prime32;
+
+ /* states full reset (deliberately not synchronized) */
+ /* some issues can only happen when reusing states */
+ if ((FUZ_rand(&lseed) & 0xFF) == 131) {
+ ZSTD_freeCStream(zc);
+ zc = ZSTD_createCStream();
+ CHECK(zc==NULL, "ZSTD_createCStream : allocation error");
+ resetAllowed=0;
+ }
+ if ((FUZ_rand(&lseed) & 0xFF) == 132) {
+ ZSTD_freeDStream(zd);
+ zd = ZSTD_createDStream();
+ CHECK(zd==NULL, "ZSTD_createDStream : allocation error");
+ CHECK_Z( ZSTD_initDStream_usingDict(zd, NULL, 0) ); /* ensure at least one init */
+ }
+
+ /* srcBuffer selection [0-4] */
+ { U32 buffNb = FUZ_rand(&lseed) & 0x7F;
+ if (buffNb & 7) buffNb=2; /* most common : compressible (P) */
+ else {
+ buffNb >>= 3;
+ if (buffNb & 7) {
+ const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */
+ buffNb = tnb[buffNb >> 3];
+ } else {
+ const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */
+ buffNb = tnb[buffNb >> 3];
+ } }
+ srcBuffer = cNoiseBuffer[buffNb];
+ }
+
+ /* compression init */
+ if ((FUZ_rand(&lseed)&1) /* at beginning, to keep same nb of rand */
+ && oldTestLog /* at least one test happened */ && resetAllowed) {
+ maxTestSize = FUZ_randomLength(&lseed, oldTestLog+2);
+ maxTestSize = MIN(maxTestSize, srcBufferSize-16);
+ { U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? 0 : maxTestSize;
+ CHECK_Z( ZSTD_resetCStream(zc, pledgedSrcSize) );
+ }
+ } else {
+ U32 const testLog = FUZ_rand(&lseed) % maxSrcLog;
+ U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog;
+ U32 const cLevelCandidate = ( FUZ_rand(&lseed) %
+ (ZSTD_maxCLevel() -
+ (MAX(testLog, dictLog) / 3)))
+ + 1;
+ U32 const cLevel = MIN(cLevelCandidate, cLevelMax);
+ maxTestSize = FUZ_rLogLength(&lseed, testLog);
+ oldTestLog = testLog;
+ /* random dictionary selection */
+ dictSize = ((FUZ_rand(&lseed)&7)==1) ? FUZ_rLogLength(&lseed, dictLog) : 0;
+ { size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize);
+ dict = srcBuffer + dictStart;
+ }
+ { U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? 0 : maxTestSize;
+ ZSTD_parameters params = ZSTD_getParams(cLevel, pledgedSrcSize, dictSize);
+ params.fParams.checksumFlag = FUZ_rand(&lseed) & 1;
+ params.fParams.noDictIDFlag = FUZ_rand(&lseed) & 1;
+ CHECK_Z ( ZSTD_initCStream_advanced(zc, dict, dictSize, params, pledgedSrcSize) );
+ } }
+
+ /* multi-segments compression test */
+ XXH64_reset(&xxhState, 0);
+ { ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ;
+ U32 n;
+ for (n=0, cSize=0, totalTestSize=0 ; totalTestSize < maxTestSize ; n++) {
+ /* compress random chunks into randomly sized dst buffers */
+ { size_t const randomSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const srcSize = MIN (maxTestSize-totalTestSize, randomSrcSize);
+ size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - srcSize);
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const dstBuffSize = MIN(cBufferSize - cSize, randomDstSize);
+ ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 };
+ outBuff.size = outBuff.pos + dstBuffSize;
+
+ CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
+
+ XXH64_update(&xxhState, srcBuffer+srcStart, inBuff.pos);
+ memcpy(copyBuffer+totalTestSize, srcBuffer+srcStart, inBuff.pos);
+ totalTestSize += inBuff.pos;
+ }
+
+ /* random flush operation, to mess around */
+ if ((FUZ_rand(&lseed) & 15) == 0) {
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize);
+ outBuff.size = outBuff.pos + adjustedDstSize;
+ CHECK_Z( ZSTD_flushStream(zc, &outBuff) );
+ } }
+
+ /* final frame epilogue */
+ { size_t remainingToFlush = (size_t)(-1);
+ while (remainingToFlush) {
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize);
+ outBuff.size = outBuff.pos + adjustedDstSize;
+ remainingToFlush = ZSTD_endStream(zc, &outBuff);
+ CHECK (ZSTD_isError(remainingToFlush), "end error : %s", ZSTD_getErrorName(remainingToFlush));
+ } }
+ crcOrig = XXH64_digest(&xxhState);
+ cSize = outBuff.pos;
+ }
+
+ /* multi - fragments decompression test */
+ if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) {
+ CHECK_Z ( ZSTD_resetDStream(zd) );
+ } else {
+ CHECK_Z ( ZSTD_initDStream_usingDict(zd, dict, dictSize) );
+ }
+ { size_t decompressionResult = 1;
+ ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
+ ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
+ for (totalGenSize = 0 ; decompressionResult ; ) {
+ size_t const readCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const dstBuffSize = MIN(dstBufferSize - totalGenSize, randomDstSize);
+ inBuff.size = inBuff.pos + readCSrcSize;
+ outBuff.size = outBuff.pos + dstBuffSize;
+ decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ if (ZSTD_getErrorCode(decompressionResult) == ZSTD_error_checksum_wrong) {
+ DISPLAY("checksum error : \n");
+ findDiff(copyBuffer, dstBuffer, totalTestSize);
+ }
+ CHECK( ZSTD_isError(decompressionResult), "decompression error : %s",
+ ZSTD_getErrorName(decompressionResult) );
+ }
+ CHECK (decompressionResult != 0, "frame not fully decoded");
+ CHECK (outBuff.pos != totalTestSize, "decompressed data : wrong size (%u != %u)",
+ (U32)outBuff.pos, (U32)totalTestSize);
+ CHECK (inBuff.pos != cSize, "compressed data should be fully read")
+ { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0);
+ if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize);
+ CHECK (crcDest!=crcOrig, "decompressed data corrupted");
+ } }
+
+ /*===== noisy/erroneous src decompression test =====*/
+
+ /* add some noise */
+ { U32 const nbNoiseChunks = (FUZ_rand(&lseed) & 7) + 2;
+ U32 nn; for (nn=0; nn<nbNoiseChunks; nn++) {
+ size_t const randomNoiseSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const noiseSize = MIN((cSize/3) , randomNoiseSize);
+ size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseSize);
+ size_t const cStart = FUZ_rand(&lseed) % (cSize - noiseSize);
+ memcpy(cBuffer+cStart, srcBuffer+noiseStart, noiseSize);
+ } }
+
+ /* try decompression on noisy data */
+ CHECK_Z( ZSTD_initDStream(zd_noise) ); /* note : no dictionary */
+ { ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
+ ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
+ while (outBuff.pos < dstBufferSize) {
+ size_t const randomCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const adjustedDstSize = MIN(dstBufferSize - outBuff.pos, randomDstSize);
+ size_t const adjustedCSrcSize = MIN(cSize - inBuff.pos, randomCSrcSize);
+ outBuff.size = outBuff.pos + adjustedDstSize;
+ inBuff.size = inBuff.pos + adjustedCSrcSize;
+ { size_t const decompressError = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ if (ZSTD_isError(decompressError)) break; /* error correctly detected */
+ /* No forward progress possible */
+ if (outBuff.pos < outBuff.size && inBuff.pos == cSize) break;
+ } } } }
+ DISPLAY("\r%u fuzzer tests completed \n", testNb);
+
+_cleanup:
+ ZSTD_freeCStream(zc);
+ ZSTD_freeDStream(zd);
+ ZSTD_freeDStream(zd_noise);
+ free(cNoiseBuffer[0]);
+ free(cNoiseBuffer[1]);
+ free(cNoiseBuffer[2]);
+ free(cNoiseBuffer[3]);
+ free(cNoiseBuffer[4]);
+ free(copyBuffer);
+ free(cBuffer);
+ free(dstBuffer);
+ return result;
+
+_output_error:
+ result = 1;
+ goto _cleanup;
+}
+
+
+/* Multi-threading version of fuzzer Tests */
+static int fuzzerTests_MT(U32 seed, U32 nbTests, unsigned startTest, double compressibility, int bigTests)
+{
+ const U32 maxSrcLog = bigTests ? 24 : 22;
+ static const U32 maxSampleLog = 19;
+ size_t const srcBufferSize = (size_t)1<<maxSrcLog;
+ BYTE* cNoiseBuffer[5];
+ size_t const copyBufferSize= srcBufferSize + (1<<maxSampleLog);
+ BYTE* const copyBuffer = (BYTE*)malloc (copyBufferSize);
+ size_t const cBufferSize = ZSTD_compressBound(srcBufferSize);
+ BYTE* const cBuffer = (BYTE*)malloc (cBufferSize);
+ size_t const dstBufferSize = srcBufferSize;
+ BYTE* const dstBuffer = (BYTE*)malloc (dstBufferSize);
+ U32 result = 0;
+ U32 testNb = 0;
+ U32 coreSeed = seed;
+ U32 nbThreads = 2;
+ ZSTDMT_CCtx* zc = ZSTDMT_createCCtx(nbThreads); /* will be reset sometimes */
+ ZSTD_DStream* zd = ZSTD_createDStream(); /* will be reset sometimes */
+ ZSTD_DStream* const zd_noise = ZSTD_createDStream();
+ clock_t const startClock = clock();
+ const BYTE* dict=NULL; /* can keep same dict on 2 consecutive tests */
+ size_t dictSize = 0;
+ U32 oldTestLog = 0;
+ int const cLevelMax = bigTests ? (U32)ZSTD_maxCLevel()-1 : g_cLevelMax_smallTests;
+ U32 const nbThreadsMax = bigTests ? 4 : 2;
+
+ /* allocations */
+ cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize);
+ CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] ||
+ !copyBuffer || !dstBuffer || !cBuffer || !zc || !zd || !zd_noise ,
+ "Not enough memory, fuzzer tests cancelled");
+
+ /* Create initial samples */
+ RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */
+ RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */
+ RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed);
+ RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */
+ RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */
+ memset(copyBuffer, 0x65, copyBufferSize); /* make copyBuffer considered initialized */
+ ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */
+
+ /* catch up testNb */
+ for (testNb=1; testNb < startTest; testNb++)
+ FUZ_rand(&coreSeed);
+
+ /* test loop */
+ for ( ; (testNb <= nbTests) || (FUZ_GetClockSpan(startClock) < g_clockTime) ; testNb++ ) {
+ U32 lseed;
+ const BYTE* srcBuffer;
+ size_t totalTestSize, totalGenSize, cSize;
+ XXH64_state_t xxhState;
+ U64 crcOrig;
+ U32 resetAllowed = 1;
+ size_t maxTestSize;
+
+ /* init */
+ if (testNb < nbTests) {
+ DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests);
+ } else { DISPLAYUPDATE(2, "\r%6u ", testNb); }
+ FUZ_rand(&coreSeed);
+ lseed = coreSeed ^ prime32;
+
+ /* states full reset (deliberately not synchronized) */
+ /* some issues can only happen when reusing states */
+ if ((FUZ_rand(&lseed) & 0xFF) == 131) {
+ nbThreads = (FUZ_rand(&lseed) % nbThreadsMax) + 1;
+ DISPLAYLEVEL(5, "Creating new context with %u threads \n", nbThreads);
+ ZSTDMT_freeCCtx(zc);
+ zc = ZSTDMT_createCCtx(nbThreads);
+ CHECK(zc==NULL, "ZSTDMT_createCCtx allocation error")
+ resetAllowed=0;
+ }
+ if ((FUZ_rand(&lseed) & 0xFF) == 132) {
+ ZSTD_freeDStream(zd);
+ zd = ZSTD_createDStream();
+ CHECK(zd==NULL, "ZSTDMT_createCCtx allocation error")
+ ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */
+ }
+
+ /* srcBuffer selection [0-4] */
+ { U32 buffNb = FUZ_rand(&lseed) & 0x7F;
+ if (buffNb & 7) buffNb=2; /* most common : compressible (P) */
+ else {
+ buffNb >>= 3;
+ if (buffNb & 7) {
+ const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */
+ buffNb = tnb[buffNb >> 3];
+ } else {
+ const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */
+ buffNb = tnb[buffNb >> 3];
+ } }
+ srcBuffer = cNoiseBuffer[buffNb];
+ }
+
+ /* compression init */
+ if ((FUZ_rand(&lseed)&1) /* at beginning, to keep same nb of rand */
+ && oldTestLog /* at least one test happened */ && resetAllowed) {
+ maxTestSize = FUZ_randomLength(&lseed, oldTestLog+2);
+ if (maxTestSize >= srcBufferSize) maxTestSize = srcBufferSize-1;
+ { int const compressionLevel = (FUZ_rand(&lseed) % 5) + 1;
+ CHECK_Z( ZSTDMT_initCStream(zc, compressionLevel) );
+ }
+ } else {
+ U32 const testLog = FUZ_rand(&lseed) % maxSrcLog;
+ U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog;
+ int const cLevelCandidate = ( FUZ_rand(&lseed)
+ % (ZSTD_maxCLevel() - (MAX(testLog, dictLog) / 2)) )
+ + 1;
+ int const cLevelThreadAdjusted = cLevelCandidate - (nbThreads * 2) + 2; /* reduce cLevel when multiple threads to reduce memory consumption */
+ int const cLevelMin = MAX(cLevelThreadAdjusted, 1); /* no negative cLevel yet */
+ int const cLevel = MIN(cLevelMin, cLevelMax);
+ maxTestSize = FUZ_rLogLength(&lseed, testLog);
+ oldTestLog = testLog;
+ /* random dictionary selection */
+ dictSize = ((FUZ_rand(&lseed)&63)==1) ? FUZ_rLogLength(&lseed, dictLog) : 0;
+ { size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize);
+ dict = srcBuffer + dictStart;
+ }
+ { U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? 0 : maxTestSize;
+ ZSTD_parameters params = ZSTD_getParams(cLevel, pledgedSrcSize, dictSize);
+ DISPLAYLEVEL(5, "Init with windowLog = %u and pledgedSrcSize = %u \n",
+ params.cParams.windowLog, (U32)pledgedSrcSize);
+ params.fParams.checksumFlag = FUZ_rand(&lseed) & 1;
+ params.fParams.noDictIDFlag = FUZ_rand(&lseed) & 1;
+ params.fParams.contentSizeFlag = pledgedSrcSize>0;
+ DISPLAYLEVEL(5, "checksumFlag : %u \n", params.fParams.checksumFlag);
+ CHECK_Z( ZSTDMT_initCStream_advanced(zc, dict, dictSize, params, pledgedSrcSize) );
+ CHECK_Z( ZSTDMT_setMTCtxParameter(zc, ZSTDMT_p_overlapSectionLog, FUZ_rand(&lseed) % 12) );
+ CHECK_Z( ZSTDMT_setMTCtxParameter(zc, ZSTDMT_p_sectionSize, FUZ_rand(&lseed) % (2*maxTestSize+1)) );
+ } }
+
+ /* multi-segments compression test */
+ XXH64_reset(&xxhState, 0);
+ { ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ;
+ U32 n;
+ for (n=0, cSize=0, totalTestSize=0 ; totalTestSize < maxTestSize ; n++) {
+ /* compress random chunks into randomly sized dst buffers */
+ { size_t const randomSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const srcSize = MIN (maxTestSize-totalTestSize, randomSrcSize);
+ size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - srcSize);
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const dstBuffSize = MIN(cBufferSize - cSize, randomDstSize);
+ ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 };
+ outBuff.size = outBuff.pos + dstBuffSize;
+
+ DISPLAYLEVEL(5, "Sending %u bytes to compress \n", (U32)srcSize);
+ CHECK_Z( ZSTDMT_compressStream(zc, &outBuff, &inBuff) );
+ DISPLAYLEVEL(5, "%u bytes read by ZSTDMT_compressStream \n", (U32)inBuff.pos);
+
+ XXH64_update(&xxhState, srcBuffer+srcStart, inBuff.pos);
+ memcpy(copyBuffer+totalTestSize, srcBuffer+srcStart, inBuff.pos);
+ totalTestSize += inBuff.pos;
+ }
+
+ /* random flush operation, to mess around */
+ if ((FUZ_rand(&lseed) & 15) == 0) {
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize);
+ outBuff.size = outBuff.pos + adjustedDstSize;
+ DISPLAYLEVEL(5, "Flushing into dst buffer of size %u \n", (U32)adjustedDstSize);
+ CHECK_Z( ZSTDMT_flushStream(zc, &outBuff) );
+ } }
+
+ /* final frame epilogue */
+ { size_t remainingToFlush = (size_t)(-1);
+ while (remainingToFlush) {
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize);
+ outBuff.size = outBuff.pos + adjustedDstSize;
+ DISPLAYLEVEL(5, "Ending into dst buffer of size %u \n", (U32)adjustedDstSize);
+ remainingToFlush = ZSTDMT_endStream(zc, &outBuff);
+ CHECK (ZSTD_isError(remainingToFlush), "ZSTDMT_endStream error : %s", ZSTD_getErrorName(remainingToFlush));
+ DISPLAYLEVEL(5, "endStream : remainingToFlush : %u \n", (U32)remainingToFlush);
+ } }
+ crcOrig = XXH64_digest(&xxhState);
+ cSize = outBuff.pos;
+ DISPLAYLEVEL(5, "Frame completed : %u bytes \n", (U32)cSize);
+ }
+
+ /* multi - fragments decompression test */
+ if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) {
+ CHECK_Z( ZSTD_resetDStream(zd) );
+ } else {
+ CHECK_Z( ZSTD_initDStream_usingDict(zd, dict, dictSize) );
+ }
+ { size_t decompressionResult = 1;
+ ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
+ ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
+ for (totalGenSize = 0 ; decompressionResult ; ) {
+ size_t const readCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const dstBuffSize = MIN(dstBufferSize - totalGenSize, randomDstSize);
+ inBuff.size = inBuff.pos + readCSrcSize;
+ outBuff.size = outBuff.pos + dstBuffSize;
+ DISPLAYLEVEL(5, "ZSTD_decompressStream input %u bytes \n", (U32)readCSrcSize);
+ decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ CHECK (ZSTD_isError(decompressionResult), "decompression error : %s", ZSTD_getErrorName(decompressionResult));
+ DISPLAYLEVEL(5, "inBuff.pos = %u \n", (U32)readCSrcSize);
+ }
+ CHECK (outBuff.pos != totalTestSize, "decompressed data : wrong size (%u != %u)", (U32)outBuff.pos, (U32)totalTestSize);
+ CHECK (inBuff.pos != cSize, "compressed data should be fully read (%u != %u)", (U32)inBuff.pos, (U32)cSize);
+ { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0);
+ if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize);
+ CHECK (crcDest!=crcOrig, "decompressed data corrupted");
+ } }
+
+ /*===== noisy/erroneous src decompression test =====*/
+
+ /* add some noise */
+ { U32 const nbNoiseChunks = (FUZ_rand(&lseed) & 7) + 2;
+ U32 nn; for (nn=0; nn<nbNoiseChunks; nn++) {
+ size_t const randomNoiseSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const noiseSize = MIN((cSize/3) , randomNoiseSize);
+ size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseSize);
+ size_t const cStart = FUZ_rand(&lseed) % (cSize - noiseSize);
+ memcpy(cBuffer+cStart, srcBuffer+noiseStart, noiseSize);
+ } }
+
+ /* try decompression on noisy data */
+ CHECK_Z( ZSTD_initDStream(zd_noise) ); /* note : no dictionary */
+ { ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
+ ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
+ while (outBuff.pos < dstBufferSize) {
+ size_t const randomCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const adjustedDstSize = MIN(dstBufferSize - outBuff.pos, randomDstSize);
+ size_t const adjustedCSrcSize = MIN(cSize - inBuff.pos, randomCSrcSize);
+ outBuff.size = outBuff.pos + adjustedDstSize;
+ inBuff.size = inBuff.pos + adjustedCSrcSize;
+ { size_t const decompressError = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ if (ZSTD_isError(decompressError)) break; /* error correctly detected */
+ /* No forward progress possible */
+ if (outBuff.pos < outBuff.size && inBuff.pos == cSize) break;
+ } } } }
+ DISPLAY("\r%u fuzzer tests completed \n", testNb);
+
+_cleanup:
+ ZSTDMT_freeCCtx(zc);
+ ZSTD_freeDStream(zd);
+ ZSTD_freeDStream(zd_noise);
+ free(cNoiseBuffer[0]);
+ free(cNoiseBuffer[1]);
+ free(cNoiseBuffer[2]);
+ free(cNoiseBuffer[3]);
+ free(cNoiseBuffer[4]);
+ free(copyBuffer);
+ free(cBuffer);
+ free(dstBuffer);
+ return result;
+
+_output_error:
+ result = 1;
+ goto _cleanup;
+}
+
+/** If useOpaqueAPI, sets param in cctxParams.
+ * Otherwise, sets the param in zc. */
+static size_t setCCtxParameter(ZSTD_CCtx* zc, ZSTD_CCtx_params* cctxParams,
+ ZSTD_cParameter param, unsigned value,
+ U32 useOpaqueAPI)
+{
+ if (useOpaqueAPI) {
+ return ZSTD_CCtxParam_setParameter(cctxParams, param, value);
+ } else {
+ return ZSTD_CCtx_setParameter(zc, param, value);
+ }
+}
+
+/* Tests for ZSTD_compress_generic() API */
+static int fuzzerTests_newAPI(U32 seed, U32 nbTests, unsigned startTest, double compressibility, int bigTests, U32 const useOpaqueAPI)
+{
+ U32 const maxSrcLog = bigTests ? 24 : 22;
+ static const U32 maxSampleLog = 19;
+ size_t const srcBufferSize = (size_t)1<<maxSrcLog;
+ BYTE* cNoiseBuffer[5];
+ size_t const copyBufferSize= srcBufferSize + (1<<maxSampleLog);
+ BYTE* const copyBuffer = (BYTE*)malloc (copyBufferSize);
+ size_t const cBufferSize = ZSTD_compressBound(srcBufferSize);
+ BYTE* const cBuffer = (BYTE*)malloc (cBufferSize);
+ size_t const dstBufferSize = srcBufferSize;
+ BYTE* const dstBuffer = (BYTE*)malloc (dstBufferSize);
+ U32 result = 0;
+ U32 testNb = 0;
+ U32 coreSeed = seed;
+ ZSTD_CCtx* zc = ZSTD_createCCtx(); /* will be reset sometimes */
+ ZSTD_DStream* zd = ZSTD_createDStream(); /* will be reset sometimes */
+ ZSTD_DStream* const zd_noise = ZSTD_createDStream();
+ clock_t const startClock = clock();
+ const BYTE* dict = NULL; /* can keep same dict on 2 consecutive tests */
+ size_t dictSize = 0;
+ U32 oldTestLog = 0;
+ U32 windowLogMalus = 0; /* can survive between 2 loops */
+ U32 const cLevelMax = bigTests ? (U32)ZSTD_maxCLevel()-1 : g_cLevelMax_smallTests;
+ U32 const nbThreadsMax = bigTests ? 4 : 2;
+ ZSTD_CCtx_params* cctxParams = ZSTD_createCCtxParams();
+
+ /* allocations */
+ cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize);
+ CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] ||
+ !copyBuffer || !dstBuffer || !cBuffer || !zc || !zd || !zd_noise ,
+ "Not enough memory, fuzzer tests cancelled");
+
+ /* Create initial samples */
+ RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */
+ RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */
+ RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed);
+ RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */
+ RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */
+ memset(copyBuffer, 0x65, copyBufferSize); /* make copyBuffer considered initialized */
+ CHECK_Z( ZSTD_initDStream_usingDict(zd, NULL, 0) ); /* ensure at least one init */
+
+ /* catch up testNb */
+ for (testNb=1; testNb < startTest; testNb++)
+ FUZ_rand(&coreSeed);
+
+ /* test loop */
+ for ( ; (testNb <= nbTests) || (FUZ_GetClockSpan(startClock) < g_clockTime) ; testNb++ ) {
+ U32 lseed;
+ const BYTE* srcBuffer;
+ size_t totalTestSize, totalGenSize, cSize;
+ XXH64_state_t xxhState;
+ U64 crcOrig;
+ U32 resetAllowed = 1;
+ size_t maxTestSize;
+
+ /* init */
+ if (nbTests >= testNb) { DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); }
+ else { DISPLAYUPDATE(2, "\r%6u ", testNb); }
+ FUZ_rand(&coreSeed);
+ lseed = coreSeed ^ prime32;
+ DISPLAYLEVEL(5, " *** Test %u *** \n", testNb);
+
+ /* states full reset (deliberately not synchronized) */
+ /* some issues can only happen when reusing states */
+ if ((FUZ_rand(&lseed) & 0xFF) == 131) {
+ DISPLAYLEVEL(5, "Creating new context \n");
+ ZSTD_freeCCtx(zc);
+ zc = ZSTD_createCCtx();
+ CHECK(zc==NULL, "ZSTD_createCCtx allocation error");
+ resetAllowed=0;
+ }
+ if ((FUZ_rand(&lseed) & 0xFF) == 132) {
+ ZSTD_freeDStream(zd);
+ zd = ZSTD_createDStream();
+ CHECK(zd==NULL, "ZSTD_createDStream allocation error");
+ ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */
+ }
+
+ /* srcBuffer selection [0-4] */
+ { U32 buffNb = FUZ_rand(&lseed) & 0x7F;
+ if (buffNb & 7) buffNb=2; /* most common : compressible (P) */
+ else {
+ buffNb >>= 3;
+ if (buffNb & 7) {
+ const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */
+ buffNb = tnb[buffNb >> 3];
+ } else {
+ const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */
+ buffNb = tnb[buffNb >> 3];
+ } }
+ srcBuffer = cNoiseBuffer[buffNb];
+ }
+
+ /* compression init */
+ CHECK_Z( ZSTD_CCtx_loadDictionary(zc, NULL, 0) ); /* cancel previous dict /*/
+ if ((FUZ_rand(&lseed)&1) /* at beginning, to keep same nb of rand */
+ && oldTestLog /* at least one test happened */ && resetAllowed) {
+ maxTestSize = FUZ_randomLength(&lseed, oldTestLog+2);
+ if (maxTestSize >= srcBufferSize) maxTestSize = srcBufferSize-1;
+ { int const compressionLevel = (FUZ_rand(&lseed) % 5) + 1;
+ CHECK_Z (setCCtxParameter(zc, cctxParams, ZSTD_p_compressionLevel, compressionLevel, useOpaqueAPI) );
+ }
+ } else {
+ U32 const testLog = FUZ_rand(&lseed) % maxSrcLog;
+ U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog;
+ U32 const cLevelCandidate = (FUZ_rand(&lseed) %
+ (ZSTD_maxCLevel() -
+ (MAX(testLog, dictLog) / 2))) +
+ 1;
+ U32 const cLevel = MIN(cLevelCandidate, cLevelMax);
+ DISPLAYLEVEL(5, "t%u: cLevel : %u \n", testNb, cLevel);
+ maxTestSize = FUZ_rLogLength(&lseed, testLog);
+ DISPLAYLEVEL(5, "t%u: maxTestSize : %u \n", testNb, (U32)maxTestSize);
+ oldTestLog = testLog;
+ /* random dictionary selection */
+ dictSize = ((FUZ_rand(&lseed)&63)==1) ? FUZ_rLogLength(&lseed, dictLog) : 0;
+ { size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize);
+ dict = srcBuffer + dictStart;
+ if (!dictSize) dict=NULL;
+ }
+ { U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? ZSTD_CONTENTSIZE_UNKNOWN : maxTestSize;
+ ZSTD_compressionParameters cParams = ZSTD_getCParams(cLevel, pledgedSrcSize, dictSize);
+ static const U32 windowLogMax = 24;
+
+ /* mess with compression parameters */
+ cParams.windowLog += (FUZ_rand(&lseed) & 3) - 1;
+ cParams.windowLog = MIN(windowLogMax, cParams.windowLog);
+ cParams.hashLog += (FUZ_rand(&lseed) & 3) - 1;
+ cParams.chainLog += (FUZ_rand(&lseed) & 3) - 1;
+ cParams.searchLog += (FUZ_rand(&lseed) & 3) - 1;
+ cParams.searchLength += (FUZ_rand(&lseed) & 3) - 1;
+ cParams.targetLength = (U32)((cParams.targetLength + 1 ) * (0.5 + ((double)(FUZ_rand(&lseed) & 127) / 128)));
+ cParams = ZSTD_adjustCParams(cParams, 0, 0);
+
+ if (FUZ_rand(&lseed) & 1) {
+ CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_windowLog, cParams.windowLog, useOpaqueAPI) );
+ assert(cParams.windowLog >= ZSTD_WINDOWLOG_MIN); /* guaranteed by ZSTD_adjustCParams() */
+ windowLogMalus = (cParams.windowLog - ZSTD_WINDOWLOG_MIN) / 5;
+ DISPLAYLEVEL(5, "t%u: windowLog : %u \n", testNb, cParams.windowLog);
+ }
+ if (FUZ_rand(&lseed) & 1) {
+ CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_hashLog, cParams.hashLog, useOpaqueAPI) );
+ DISPLAYLEVEL(5, "t%u: hashLog : %u \n", testNb, cParams.hashLog);
+ }
+ if (FUZ_rand(&lseed) & 1) {
+ CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_chainLog, cParams.chainLog, useOpaqueAPI) );
+ DISPLAYLEVEL(5, "t%u: chainLog : %u \n", testNb, cParams.chainLog);
+ }
+ if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_searchLog, cParams.searchLog, useOpaqueAPI) );
+ if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_minMatch, cParams.searchLength, useOpaqueAPI) );
+ if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_targetLength, cParams.targetLength, useOpaqueAPI) );
+
+ /* mess with long distance matching parameters */
+ if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_enableLongDistanceMatching, FUZ_rand(&lseed) & 63, useOpaqueAPI) );
+ if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_ldmHashLog, FUZ_randomClampedLength(&lseed, ZSTD_HASHLOG_MIN, 23), useOpaqueAPI) );
+ if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_ldmMinMatch, FUZ_randomClampedLength(&lseed, ZSTD_LDM_MINMATCH_MIN, ZSTD_LDM_MINMATCH_MAX), useOpaqueAPI) );
+ if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_ldmBucketSizeLog, FUZ_randomClampedLength(&lseed, 0, ZSTD_LDM_BUCKETSIZELOG_MAX), useOpaqueAPI) );
+ if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_ldmHashEveryLog, FUZ_randomClampedLength(&lseed, 0, ZSTD_WINDOWLOG_MAX - ZSTD_HASHLOG_MIN), useOpaqueAPI) );
+
+ /* mess with frame parameters */
+ if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_checksumFlag, FUZ_rand(&lseed) & 1, useOpaqueAPI) );
+ if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_dictIDFlag, FUZ_rand(&lseed) & 1, useOpaqueAPI) );
+ if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_contentSizeFlag, FUZ_rand(&lseed) & 1, useOpaqueAPI) );
+ if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, pledgedSrcSize) );
+ DISPLAYLEVEL(5, "t%u: pledgedSrcSize : %u \n", testNb, (U32)pledgedSrcSize);
+
+ /* multi-threading parameters */
+ { U32 const nbThreadsCandidate = (FUZ_rand(&lseed) & 4) + 1;
+ U32 const nbThreadsAdjusted = (windowLogMalus < nbThreadsCandidate) ? nbThreadsCandidate - windowLogMalus : 1;
+ U32 const nbThreads = MIN(nbThreadsAdjusted, nbThreadsMax);
+ CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_nbThreads, nbThreads, useOpaqueAPI) );
+ DISPLAYLEVEL(5, "t%u: nbThreads : %u \n", testNb, nbThreads);
+ if (nbThreads > 1) {
+ U32 const jobLog = FUZ_rand(&lseed) % (testLog+1);
+ CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_overlapSizeLog, FUZ_rand(&lseed) % 10, useOpaqueAPI) );
+ CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_p_jobSize, (U32)FUZ_rLogLength(&lseed, jobLog), useOpaqueAPI) );
+ }
+ }
+
+ if (FUZ_rand(&lseed) & 1) CHECK_Z (setCCtxParameter(zc, cctxParams, ZSTD_p_forceMaxWindow, FUZ_rand(&lseed) & 1, useOpaqueAPI) );
+
+ /* Apply parameters */
+ if (useOpaqueAPI) {
+ CHECK_Z (ZSTD_CCtx_setParametersUsingCCtxParams(zc, cctxParams) );
+ }
+
+ if (FUZ_rand(&lseed) & 1) {
+ if (FUZ_rand(&lseed) & 1) {
+ CHECK_Z( ZSTD_CCtx_loadDictionary(zc, dict, dictSize) );
+ } else {
+ CHECK_Z( ZSTD_CCtx_loadDictionary_byReference(zc, dict, dictSize) );
+ }
+ if (dict && dictSize) {
+ /* test that compression parameters are rejected (correctly) after loading a non-NULL dictionary */
+ if (useOpaqueAPI) {
+ size_t const setError = ZSTD_CCtx_setParametersUsingCCtxParams(zc, cctxParams);
+ CHECK(!ZSTD_isError(setError), "ZSTD_CCtx_setParametersUsingCCtxParams should have failed");
+ } else {
+ size_t const setError = ZSTD_CCtx_setParameter(zc, ZSTD_p_windowLog, cParams.windowLog-1);
+ CHECK(!ZSTD_isError(setError), "ZSTD_CCtx_setParameter should have failed");
+ }
+ }
+ } else {
+ CHECK_Z( ZSTD_CCtx_refPrefix(zc, dict, dictSize) );
+ }
+ } }
+
+ /* multi-segments compression test */
+ XXH64_reset(&xxhState, 0);
+ { ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ;
+ for (cSize=0, totalTestSize=0 ; (totalTestSize < maxTestSize) ; ) {
+ /* compress random chunks into randomly sized dst buffers */
+ size_t const randomSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const srcSize = MIN(maxTestSize-totalTestSize, randomSrcSize);
+ size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - srcSize);
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog+1);
+ size_t const dstBuffSize = MIN(cBufferSize - cSize, randomDstSize);
+ ZSTD_EndDirective const flush = (FUZ_rand(&lseed) & 15) ? ZSTD_e_continue : ZSTD_e_flush;
+ ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 };
+ outBuff.size = outBuff.pos + dstBuffSize;
+
+ CHECK_Z( ZSTD_compress_generic(zc, &outBuff, &inBuff, flush) );
+ DISPLAYLEVEL(6, "compress consumed %u bytes (total : %u) \n",
+ (U32)inBuff.pos, (U32)(totalTestSize + inBuff.pos));
+
+ XXH64_update(&xxhState, srcBuffer+srcStart, inBuff.pos);
+ memcpy(copyBuffer+totalTestSize, srcBuffer+srcStart, inBuff.pos);
+ totalTestSize += inBuff.pos;
+ }
+
+ /* final frame epilogue */
+ { size_t remainingToFlush = (size_t)(-1);
+ while (remainingToFlush) {
+ ZSTD_inBuffer inBuff = { NULL, 0, 0 };
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog+1);
+ size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize);
+ outBuff.size = outBuff.pos + adjustedDstSize;
+ DISPLAYLEVEL(6, "End-flush into dst buffer of size %u \n", (U32)adjustedDstSize);
+ remainingToFlush = ZSTD_compress_generic(zc, &outBuff, &inBuff, ZSTD_e_end);
+ CHECK( ZSTD_isError(remainingToFlush),
+ "ZSTD_compress_generic w/ ZSTD_e_end error : %s",
+ ZSTD_getErrorName(remainingToFlush) );
+ } }
+ crcOrig = XXH64_digest(&xxhState);
+ cSize = outBuff.pos;
+ DISPLAYLEVEL(5, "Frame completed : %u bytes \n", (U32)cSize);
+ }
+
+ /* multi - fragments decompression test */
+ if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) {
+ DISPLAYLEVEL(5, "resetting DCtx (dict:%08X) \n", (U32)(size_t)dict);
+ CHECK_Z( ZSTD_resetDStream(zd) );
+ } else {
+ DISPLAYLEVEL(5, "using dict of size %u \n", (U32)dictSize);
+ CHECK_Z( ZSTD_initDStream_usingDict(zd, dict, dictSize) );
+ }
+ { size_t decompressionResult = 1;
+ ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
+ ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
+ for (totalGenSize = 0 ; decompressionResult ; ) {
+ size_t const readCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const dstBuffSize = MIN(dstBufferSize - totalGenSize, randomDstSize);
+ inBuff.size = inBuff.pos + readCSrcSize;
+ outBuff.size = outBuff.pos + dstBuffSize;
+ DISPLAYLEVEL(6, "ZSTD_decompressStream input %u bytes (pos:%u/%u)\n",
+ (U32)readCSrcSize, (U32)inBuff.pos, (U32)cSize);
+ decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ CHECK (ZSTD_isError(decompressionResult), "decompression error : %s", ZSTD_getErrorName(decompressionResult));
+ DISPLAYLEVEL(6, "inBuff.pos = %u \n", (U32)readCSrcSize);
+ }
+ CHECK (outBuff.pos != totalTestSize, "decompressed data : wrong size (%u != %u)", (U32)outBuff.pos, (U32)totalTestSize);
+ CHECK (inBuff.pos != cSize, "compressed data should be fully read (%u != %u)", (U32)inBuff.pos, (U32)cSize);
+ { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0);
+ if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize);
+ CHECK (crcDest!=crcOrig, "decompressed data corrupted");
+ } }
+
+ /*===== noisy/erroneous src decompression test =====*/
+
+ /* add some noise */
+ { U32 const nbNoiseChunks = (FUZ_rand(&lseed) & 7) + 2;
+ U32 nn; for (nn=0; nn<nbNoiseChunks; nn++) {
+ size_t const randomNoiseSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const noiseSize = MIN((cSize/3) , randomNoiseSize);
+ size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseSize);
+ size_t const cStart = FUZ_rand(&lseed) % (cSize - noiseSize);
+ memcpy(cBuffer+cStart, srcBuffer+noiseStart, noiseSize);
+ } }
+
+ /* try decompression on noisy data */
+ CHECK_Z( ZSTD_initDStream(zd_noise) ); /* note : no dictionary */
+ { ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
+ ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
+ while (outBuff.pos < dstBufferSize) {
+ size_t const randomCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const adjustedDstSize = MIN(dstBufferSize - outBuff.pos, randomDstSize);
+ size_t const adjustedCSrcSize = MIN(cSize - inBuff.pos, randomCSrcSize);
+ outBuff.size = outBuff.pos + adjustedDstSize;
+ inBuff.size = inBuff.pos + adjustedCSrcSize;
+ { size_t const decompressError = ZSTD_decompressStream(zd, &outBuff, &inBuff);
+ if (ZSTD_isError(decompressError)) break; /* error correctly detected */
+ /* Good so far, but no more progress possible */
+ if (outBuff.pos < outBuff.size && inBuff.pos == cSize) break;
+ } } } }
+ DISPLAY("\r%u fuzzer tests completed \n", testNb-1);
+
+_cleanup:
+ ZSTD_freeCCtx(zc);
+ ZSTD_freeDStream(zd);
+ ZSTD_freeDStream(zd_noise);
+ ZSTD_freeCCtxParams(cctxParams);
+ free(cNoiseBuffer[0]);
+ free(cNoiseBuffer[1]);
+ free(cNoiseBuffer[2]);
+ free(cNoiseBuffer[3]);
+ free(cNoiseBuffer[4]);
+ free(copyBuffer);
+ free(cBuffer);
+ free(dstBuffer);
+ return result;
+
+_output_error:
+ result = 1;
+ goto _cleanup;
+}
+
+/*-*******************************************************
+* Command line
+*********************************************************/
+int FUZ_usage(const char* programName)
+{
+ DISPLAY( "Usage :\n");
+ DISPLAY( " %s [args]\n", programName);
+ DISPLAY( "\n");
+ DISPLAY( "Arguments :\n");
+ DISPLAY( " -i# : Nb of tests (default:%u) \n", nbTestsDefault);
+ DISPLAY( " -s# : Select seed (default:prompt user)\n");
+ DISPLAY( " -t# : Select starting test number (default:0)\n");
+ DISPLAY( " -P# : Select compressibility in %% (default:%i%%)\n", FUZ_COMPRESSIBILITY_DEFAULT);
+ DISPLAY( " -v : verbose\n");
+ DISPLAY( " -p : pause at the end\n");
+ DISPLAY( " -h : display help and exit\n");
+ return 0;
+}
+
+typedef enum { simple_api, mt_api, advanced_api } e_api;
+
+int main(int argc, const char** argv)
+{
+ U32 seed=0;
+ int seedset=0;
+ int argNb;
+ int nbTests = nbTestsDefault;
+ int testNb = 0;
+ int proba = FUZ_COMPRESSIBILITY_DEFAULT;
+ int result=0;
+ int mainPause = 0;
+ int bigTests = (sizeof(size_t) == 8);
+ e_api selected_api = simple_api;
+ const char* const programName = argv[0];
+ ZSTD_customMem const customNULL = ZSTD_defaultCMem;
+ U32 useOpaqueAPI = 0;
+
+ /* Check command line */
+ for(argNb=1; argNb<argc; argNb++) {
+ const char* argument = argv[argNb];
+ if(!argument) continue; /* Protection if argument empty */
+
+ /* Parsing commands. Aggregated commands are allowed */
+ if (argument[0]=='-') {
+
+ if (!strcmp(argument, "--mt")) { selected_api=mt_api; testNb += !testNb; continue; }
+ if (!strcmp(argument, "--newapi")) { selected_api=advanced_api; testNb += !testNb; continue; }
+ if (!strcmp(argument, "--opaqueapi")) { selected_api=advanced_api; testNb += !testNb; useOpaqueAPI = 1; continue; }
+ if (!strcmp(argument, "--no-big-tests")) { bigTests=0; continue; }
+
+ argument++;
+ while (*argument!=0) {
+ switch(*argument)
+ {
+ case 'h':
+ return FUZ_usage(programName);
+
+ case 'v':
+ argument++;
+ g_displayLevel++;
+ break;
+
+ case 'q':
+ argument++;
+ g_displayLevel--;
+ break;
+
+ case 'p': /* pause at the end */
+ argument++;
+ mainPause = 1;
+ break;
+
+ case 'i': /* limit tests by nb of iterations (default) */
+ argument++;
+ nbTests=0; g_clockTime=0;
+ while ((*argument>='0') && (*argument<='9')) {
+ nbTests *= 10;
+ nbTests += *argument - '0';
+ argument++;
+ }
+ break;
+
+ case 'T': /* limit tests by time */
+ argument++;
+ nbTests=0; g_clockTime=0;
+ while ((*argument>='0') && (*argument<='9')) {
+ g_clockTime *= 10;
+ g_clockTime += *argument - '0';
+ argument++;
+ }
+ if (*argument=='m') g_clockTime *=60, argument++;
+ if (*argument=='n') argument++;
+ g_clockTime *= CLOCKS_PER_SEC;
+ break;
+
+ case 's': /* manually select seed */
+ argument++;
+ seed=0;
+ seedset=1;
+ while ((*argument>='0') && (*argument<='9')) {
+ seed *= 10;
+ seed += *argument - '0';
+ argument++;
+ }
+ break;
+
+ case 't': /* select starting test number */
+ argument++;
+ testNb=0;
+ while ((*argument>='0') && (*argument<='9')) {
+ testNb *= 10;
+ testNb += *argument - '0';
+ argument++;
+ }
+ break;
+
+ case 'P': /* compressibility % */
+ argument++;
+ proba=0;
+ while ((*argument>='0') && (*argument<='9')) {
+ proba *= 10;
+ proba += *argument - '0';
+ argument++;
+ }
+ if (proba<0) proba=0;
+ if (proba>100) proba=100;
+ break;
+
+ default:
+ return FUZ_usage(programName);
+ }
+ } } } /* for(argNb=1; argNb<argc; argNb++) */
+
+ /* Get Seed */
+ DISPLAY("Starting zstream tester (%i-bits, %s)\n", (int)(sizeof(size_t)*8), ZSTD_VERSION_STRING);
+
+ if (!seedset) {
+ time_t const t = time(NULL);
+ U32 const h = XXH32(&t, sizeof(t), 1);
+ seed = h % 10000;
+ }
+
+ DISPLAY("Seed = %u\n", seed);
+ if (proba!=FUZ_COMPRESSIBILITY_DEFAULT) DISPLAY("Compressibility : %i%%\n", proba);
+
+ if (nbTests<=0) nbTests=1;
+
+ if (testNb==0) {
+ result = basicUnitTests(0, ((double)proba) / 100, customNULL); /* constant seed for predictability */
+ }
+
+ if (!result) {
+ switch(selected_api)
+ {
+ case simple_api :
+ result = fuzzerTests(seed, nbTests, testNb, ((double)proba) / 100, bigTests);
+ break;
+ case mt_api :
+ result = fuzzerTests_MT(seed, nbTests, testNb, ((double)proba) / 100, bigTests);
+ break;
+ case advanced_api :
+ result = fuzzerTests_newAPI(seed, nbTests, testNb, ((double)proba) / 100, bigTests, useOpaqueAPI);
+ break;
+ default :
+ assert(0); /* impossible */
+ }
+ }
+
+ if (mainPause) {
+ int unused;
+ DISPLAY("Press Enter \n");
+ unused = getchar();
+ (void)unused;
+ }
+ return result;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-02 03:38:03 +0000