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[td-3361]<fix>: nchar tag filter caused client crash.

This commit is contained in:
Haojun Liao 2021-03-18 15:24:36 +08:00
parent 8286820a1c
commit 7447a8c562
2 changed files with 20 additions and 3 deletions
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12
src/client/src/tscSQLParser.c
View File

@ -4138,13 +4138,21 @@ static int32_t validateTagCondExpr(SSqlCmd* pCmd, tExprNode *p) {
}
int32_t retVal = TSDB_CODE_SUCCESS;
int32_t bufLen = 0;
if (IS_NUMERIC_TYPE(vVariant->nType)) {
bufLen = 60; // The maximum length of string that a number is converted to.
} else {
bufLen = vVariant->nLen + 1;
}
if (schemaType == TSDB_DATA_TYPE_BINARY) {
char *tmp = calloc(1, vVariant->nLen + TSDB_NCHAR_SIZE);
char *tmp = calloc(1, bufLen * TSDB_NCHAR_SIZE);
retVal = tVariantDump(vVariant, tmp, schemaType, false);
free(tmp);
} else if (schemaType == TSDB_DATA_TYPE_NCHAR) {
// pRight->value.nLen + 1 is larger than the actual nchar string length
char *tmp = calloc(1, (vVariant->nLen + 1) * TSDB_NCHAR_SIZE);
char *tmp = calloc(1, bufLen * TSDB_NCHAR_SIZE);
retVal = tVariantDump(vVariant, tmp, schemaType, false);
free(tmp);
} else {

9
tests/script/general/parser/topbot.sim
View File

@ -316,4 +316,13 @@ if $data13 != @20-02-02 01:01:01.000@ then
return -1
endi
print ===============================>td-3361
sql create table ttm1(ts timestamp, k int) tags(a nchar(12));
sql create table ttm1_t1 using ttm1 tags('abcdef')
sql insert into ttm1_t1 values(now, 1)
sql select * from ttm1 where a=123456789012
if $row != 0 then
return -1
endi
system sh/exec.sh -n dnode1 -s stop -x SIGINT