/** * Copyright (c) 2016-present, Yann Collet, Facebook, Inc. * All rights reserved. * * This source code is licensed under the BSD-style license found in the * LICENSE file in the root directory of this source tree. An additional grant * of patent rights can be found in the PATENTS file in the same directory. */ /*-************************************ * 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 /* free */ #include /* fgets, sscanf */ #include /* clock_t, clock() */ #include /* strcmp */ #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; #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__); } 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(stdout); } } 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; } static void* allocFunction(void* opaque, size_t size) { void* address = malloc(size); (void)opaque; return address; } static void freeFunction(void* opaque, void* address) { (void)opaque; free(address); } /*====================================================== * 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= 4 MB); dictionary = FUZ_createDictionary(CNBuffer, 4 MB, 4 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); ZSTD_initCStream_usingDict(zc, CNBuffer, 128 KB, 1); outBuff.dst = (char*)(compressedBuffer)+cSize; outBuff.size = compressedBufferSize; outBuff.pos = 0; inBuff.src = CNBuffer; inBuff.size = CNBufferSize; inBuff.pos = 0; { size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff); if (ZSTD_isError(r)) goto _output_error; } 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); 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); } /* skippable frame test */ DISPLAYLEVEL(3, "test%3i : decompress skippable frame : ", testNb++); ZSTD_initDStream_usingDict(zd, CNBuffer, 128 KB); 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; } if (outBuff.pos != 0) goto _output_error; /* skippable frame 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, 128 KB); { size_t const r = ZSTD_setDStreamParameter(zd, DStream_p_maxWindowSize, 1000000000); /* large limit */ if (ZSTD_isError(r)) goto _output_error; } { 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 100 bytes */ DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r)); } _end: FUZ_freeDictionary(dictionary); ZSTD_freeCStream(zc); ZSTD_freeDStream(zd); 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 "); 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) { static const U32 maxSrcLog = 24; static const U32 maxSampleLog = 19; size_t const srcBufferSize = (size_t)1<= 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(); resetAllowed=0; } if ((FUZ_rand(&lseed) & 0xFF) == 132) { ZSTD_freeDStream(zd); zd = ZSTD_createDStream(); 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; { U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? 0 : maxTestSize; size_t const resetError = ZSTD_resetCStream(zc, pledgedSrcSize); CHECK(ZSTD_isError(resetError), "ZSTD_resetCStream error : %s", ZSTD_getErrorName(resetError)); } } else { U32 const testLog = FUZ_rand(&lseed) % maxSrcLog; U32 const cLevel = (FUZ_rand(&lseed) % (ZSTD_maxCLevel() - (testLog/3))) + 1; maxTestSize = FUZ_rLogLength(&lseed, testLog); oldTestLog = testLog; /* random dictionary selection */ dictSize = ((FUZ_rand(&lseed)&63)==1) ? FUZ_randomLength(&lseed, maxSampleLog) : 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; { size_t const initError = ZSTD_initCStream_advanced(zc, dict, dictSize, params, pledgedSrcSize); CHECK (ZSTD_isError(initError),"ZSTD_initCStream_advanced error : %s", ZSTD_getErrorName(initError)); } } } /* 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; { size_t const compressionError = ZSTD_compressStream(zc, &outBuff, &inBuff); CHECK (ZSTD_isError(compressionError), "compression error : %s", ZSTD_getErrorName(compressionError)); } 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; { size_t const flushError = ZSTD_flushStream(zc, &outBuff); CHECK (ZSTD_isError(flushError), "flush error : %s", ZSTD_getErrorName(flushError)); } } } /* 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); U32 const enoughDstSize = (adjustedDstSize >= remainingToFlush); outBuff.size = outBuff.pos + adjustedDstSize; remainingToFlush = ZSTD_endStream(zc, &outBuff); CHECK (ZSTD_isError(remainingToFlush), "flush error : %s", ZSTD_getErrorName(remainingToFlush)); CHECK (enoughDstSize && remainingToFlush, "ZSTD_endStream() not fully flushed (%u remaining), but enough space available", (U32)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 (ZSTD_isError(ZSTD_resetDStream(zd)), "ZSTD_resetDStream failed"); } else { 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 = inBuff.pos + dstBuffSize; decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff); 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") 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= 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) { U32 const nbThreads = (FUZ_rand(&lseed) % 6) + 1; ZSTDMT_freeCCtx(zc); zc = ZSTDMT_createCCtx(nbThreads); resetAllowed=0; } if ((FUZ_rand(&lseed) & 0xFF) == 132) { ZSTD_freeDStream(zd); zd = ZSTD_createDStream(); 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; size_t const resetError = ZSTDMT_initCStream(zc, compressionLevel); CHECK(ZSTD_isError(resetError), "ZSTDMT_initCStream error : %s", ZSTD_getErrorName(resetError)); } } else { U32 const testLog = FUZ_rand(&lseed) % maxSrcLog; U32 const cLevel = (FUZ_rand(&lseed) % (ZSTD_maxCLevel() - (testLog/3))) + 1; maxTestSize = FUZ_rLogLength(&lseed, testLog); oldTestLog = testLog; /* random dictionary selection */ dictSize = ((FUZ_rand(&lseed)&63)==1) ? FUZ_randomLength(&lseed, maxSampleLog) : 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 \n", params.cParams.windowLog); params.fParams.checksumFlag = FUZ_rand(&lseed) & 1; params.fParams.noDictIDFlag = FUZ_rand(&lseed) & 1; { size_t const initError = ZSTDMT_initCStream_advanced(zc, dict, dictSize, params, pledgedSrcSize); CHECK (ZSTD_isError(initError),"ZSTDMT_initCStream_advanced error : %s", ZSTD_getErrorName(initError)); } } } /* 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); { size_t const compressionError = ZSTDMT_compressStream(zc, &outBuff, &inBuff); CHECK (ZSTD_isError(compressionError), "compression error : %s", ZSTD_getErrorName(compressionError)); } 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); { size_t const flushError = ZSTDMT_flushStream(zc, &outBuff); CHECK (ZSTD_isError(flushError), "flush error : %s", ZSTD_getErrorName(flushError)); } } } /* 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), "flush error : %s", ZSTD_getErrorName(remainingToFlush)); DISPLAYLEVEL(5, "endStream : remainingToFlush : %u \n", (U32)remainingToFlush); } } DISPLAYLEVEL(5, "Frame completed \n"); 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 (ZSTD_isError(ZSTD_resetDStream(zd)), "ZSTD_resetDStream failed"); } else { 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 = inBuff.pos + dstBuffSize; decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff); CHECK (ZSTD_isError(decompressionResult), "decompression error : %s", ZSTD_getErrorName(decompressionResult)); } 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='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