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Fixed : decoder error on erroneous data

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Yann Collet
2016-03-19 11:40:19 +01:00
parent 4db09efde4
commit f3120413cc
1 changed files with 4 additions and 6 deletions
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10
programs/fuzzer.c
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@@ -596,18 +596,16 @@ int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compressibilit
} }
/* decompress noisy source */ /* decompress noisy source */
{ { U32 const noiseSrc = FUZ_rand(&lseed) % 5;
U32 noiseSrc = FUZ_rand(&lseed) % 5; U32 const endMark = 0xA9B1C3D6;
const U32 endMark = 0xA9B1C3D6;
U32 endCheck;
srcBuffer = cNoiseBuffer[noiseSrc]; srcBuffer = cNoiseBuffer[noiseSrc];
memcpy(dstBuffer+sampleSize, &endMark, 4); memcpy(dstBuffer+sampleSize, &endMark, 4);
errorCode = ZSTD_decompress(dstBuffer, sampleSize, cBuffer, cSize); errorCode = ZSTD_decompress(dstBuffer, sampleSize, cBuffer, cSize);
/* result *may* be an unlikely success, but even then, it must strictly respect dest buffer boundaries */ /* result *may* be an unlikely success, but even then, it must strictly respect dest buffer boundaries */
CHECK((!ZSTD_isError(errorCode)) && (errorCode>sampleSize), CHECK((!ZSTD_isError(errorCode)) && (errorCode>sampleSize),
"ZSTD_decompress on noisy src : result is too large : %u > %u (dst buffer)", (U32)errorCode, (U32)sampleSize); "ZSTD_decompress on noisy src : result is too large : %u > %u (dst buffer)", (U32)errorCode, (U32)sampleSize);
memcpy(&endCheck, dstBuffer+sampleSize, 4); { U32 endCheck; memcpy(&endCheck, dstBuffer+sampleSize, 4);
CHECK(endMark!=endCheck, "ZSTD_decompress on noisy src : dst buffer overflow"); CHECK(endMark!=endCheck, "ZSTD_decompress on noisy src : dst buffer overflow"); }
} }
} }