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fix(query): fix invalid read in doModeAdd 

TD-19124
This commit is contained in:
Ganlin Zhao 2022-09-19 17:07:22 +08:00
parent 82a3700821
commit b08288df48
1 changed files with 2 additions and 2 deletions
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4
source/libs/function/src/builtinsimpl.c
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@ -5297,12 +5297,12 @@ bool modeFunctionSetup(SqlFunctionCtx* pCtx, SResultRowEntryInfo* pResInfo) {
}
static void doModeAdd(SModeInfo* pInfo, char* data) {
int32_t hashKeyBytes = IS_VAR_DATA_TYPE(pInfo->colType) ? varDataTLen(data) : pInfo->colBytes;
int32_t hashKeyBytes = IS_STR_DATA_TYPE(pInfo->colType) ? varDataTLen(data) : pInfo->colBytes;
SModeItem** pHashItem = taosHashGet(pInfo->pHash, data, hashKeyBytes);
if (pHashItem == NULL) {
int32_t size = sizeof(SModeItem) + pInfo->colBytes;
SModeItem* pItem = (SModeItem*)(pInfo->pItems + pInfo->numOfPoints * size);
memcpy(pItem->data, data, pInfo->colBytes);
memcpy(pItem->data, data, hashKeyBytes);
pItem->count += 1;
taosHashPut(pInfo->pHash, data, hashKeyBytes, &pItem, sizeof(SModeItem*));