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Merge pull request #4903 from taosdata/hjxilinx-patch-1 

fix char string overflow
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haojun Liao 2021-01-14 13:57:28 +08:00 committed by GitHub
parent 205292ce72 80932329f1
commit 52a524624d
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 1 deletions
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3
src/client/src/tscSQLParser.c
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@ -6101,7 +6101,7 @@ void tscPrintSelectClause(SSqlObj* pSql, int32_t subClauseIndex) {
int32_t tmpLen = 0; int32_t tmpLen = 0;
tmpLen = tmpLen =
sprintf(tmpBuf, "%s(uid:%" PRId64 ", %d)", aAggs[pExpr->functionId].aName, pExpr->uid, pExpr->colInfo.colId); sprintf(tmpBuf, "%s(uid:%" PRId64 ", %d)", aAggs[pExpr->functionId].aName, pExpr->uid, pExpr->colInfo.colId);
if (tmpLen + offset > totalBufSize) break; if (tmpLen + offset >= totalBufSize - 1) break;
offset += sprintf(str + offset, "%s", tmpBuf); offset += sprintf(str + offset, "%s", tmpBuf);
@ -6110,6 +6110,7 @@ void tscPrintSelectClause(SSqlObj* pSql, int32_t subClauseIndex) {
} }
} }
assert(offset < totalBufSize);
str[offset] = ']'; str[offset] = ']';
tscDebug("%p select clause:%s", pSql, str); tscDebug("%p select clause:%s", pSql, str);
} }