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Merge pull request #18121 from taosdata/fix/TD-20382-D 

fix: null pointer when merge col data of varchar
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dapan1121 2022-11-14 17:52:30 +08:00 committed by GitHub
parent 3fae636070 1d795f5c62
commit bb4c2ddcc5
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1 changed files with 3 additions and 1 deletions
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source/common/src/tdatablock.c
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@ -277,7 +277,9 @@ int32_t colDataMergeCol(SColumnInfoData* pColumnInfoData, int32_t numOfRow1, int
pColumnInfoData->varmeta.allocLen = len + oldLen;
}
memcpy(pColumnInfoData->pData + oldLen, pSource->pData, len);
if (pColumnInfoData->pData && pSource->pData) { // TD-20382
memcpy(pColumnInfoData->pData + oldLen, pSource->pData, len);
}
pColumnInfoData->varmeta.length = len + oldLen;
} else {
if (finalNumOfRows > (*capacity)) {