xxq250
/
homework-jianmu
1
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

Merge pull request #11663 from taosdata/fix/TD-14802 

fix(query): substr function param overflow
This commit is contained in:
Ganlin Zhao 2022-04-20 14:51:53 +08:00 committed by GitHub
parent d0b9b90781 0db26f2f96
commit 08f1980c1e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
source/libs/scalar/src/sclfunc.c
View File

@ -600,7 +600,7 @@ int32_t substrFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOu
int32_t subLen = INT16_MAX;
if (inputNum == 3) {
GET_TYPED_DATA(subLen, int32_t, GET_PARAM_TYPE(&pInput[2]), pInput[2].columnData->pData);
if (subLen < 0) { //subLen cannot be negative
if (subLen < 0 || subLen > INT16_MAX) { //subLen cannot be negative
return TSDB_CODE_FAILED;
}
subLen = (GET_PARAM_TYPE(pInput) == TSDB_DATA_TYPE_VARCHAR) ? subLen : subLen * TSDB_NCHAR_SIZE;