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check null pointer in tscSql.c.

This commit is contained in:
Shuduo Sang 2020-04-10 22:50:31 +08:00
parent 068afbcdc1
commit 7b900a5dd1
1 changed files with 12 additions and 2 deletions
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14
src/client/src/tscSql.c
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@ -329,7 +329,10 @@ int taos_num_fields(TAOS_RES *res) {
} }
SFieldInfo *pFieldsInfo = &pQueryInfo->fieldsInfo; SFieldInfo *pFieldsInfo = &pQueryInfo->fieldsInfo;
return (pFieldsInfo->numOfOutputCols - pFieldsInfo->numOfHiddenCols); if (pFieldsInfo)
return (pFieldsInfo->numOfOutputCols - pFieldsInfo->numOfHiddenCols);
else
return 0;
} }
int taos_field_count(TAOS *taos) { int taos_field_count(TAOS *taos) {
@ -351,7 +354,11 @@ TAOS_FIELD *taos_fetch_fields(TAOS_RES *res) {
if (pSql == NULL || pSql->signature != pSql) return 0; if (pSql == NULL || pSql->signature != pSql) return 0;
SQueryInfo *pQueryInfo = tscGetQueryInfoDetail(&pSql->cmd, 0); SQueryInfo *pQueryInfo = tscGetQueryInfoDetail(&pSql->cmd, 0);
return pQueryInfo->fieldsInfo.pFields;
if (pQueryInfo)
return pQueryInfo->fieldsInfo.pFields;
else
return NULL;
} }
int taos_retrieve(TAOS_RES *res) { int taos_retrieve(TAOS_RES *res) {
@ -401,6 +408,9 @@ int taos_fetch_block_impl(TAOS_RES *res, TAOS_ROW *rows) {
} }
SQueryInfo *pQueryInfo = tscGetQueryInfoDetail(pCmd, 0); SQueryInfo *pQueryInfo = tscGetQueryInfoDetail(pCmd, 0);
if (pQueryInfo == NULL)
return 0;
for (int i = 0; i < pQueryInfo->fieldsInfo.numOfOutputCols; ++i) { for (int i = 0; i < pQueryInfo->fieldsInfo.numOfOutputCols; ++i) {
pRes->tsrow[i] = TSC_GET_RESPTR_BASE(pRes, pQueryInfo, i); pRes->tsrow[i] = TSC_GET_RESPTR_BASE(pRes, pQueryInfo, i);
} }