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stronger tests for zbuff decompression

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Yann Collet
2015-11-27 14:30:23 +01:00
parent 4a7bb12320
commit 800fa6c378
2 changed files with 14 additions and 8 deletions
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12
programs/zbufftest.c
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@@ -371,7 +371,10 @@ int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compressibilit
sampleSize = (size_t)1 << sampleSizeLog;
sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
readSize = sampleSize;
genSize = dstBufferSize - totalGenSize;
sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
sampleSize = (size_t)1 << sampleSizeLog;
sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
genSize = MIN(sampleSize, dstBufferSize - totalGenSize);
errorCode = ZBUFF_decompressContinue(zd, dstBuffer+totalGenSize, &genSize, cBuffer+totalCSize, &readSize);
CHECK (ZBUFF_isError(errorCode), "decompression error : %s", ZBUFF_getErrorName(errorCode));
totalGenSize += genSize;
@@ -405,13 +408,16 @@ int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compressibilit
ZBUFF_decompressInit(zd);
totalCSize = 0;
totalGenSize = 0;
while (totalCSize < cSize)
while ( (totalCSize < cSize) && (totalGenSize < dstBufferSize) )
{
sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
sampleSize = (size_t)1 << sampleSizeLog;
sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
readSize = sampleSize;
genSize = dstBufferSize - totalGenSize;
sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
sampleSize = (size_t)1 << sampleSizeLog;
sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
genSize = MIN(sampleSize, dstBufferSize - totalGenSize);
errorCode = ZBUFF_decompressContinue(zd, dstBuffer+totalGenSize, &genSize, cBuffer+totalCSize, &readSize);
if (ZBUFF_isError(errorCode)) break; /* error correctly detected */
totalGenSize += genSize;