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| author | Sergei Golubchik <serg@mariadb.org> | 2022-05-18 13:11:16 +0200 |
|---|---|---|
| committer | Sergei Golubchik <serg@mariadb.org> | 2022-05-18 13:11:16 +0200 |
| commit | 0ba528fe56f6c637d9fbc9d177a62610038fd519 (patch) | |
| tree | e6df324715a545f1f9a82e7ed5cb37eca32d9fbd | |
| parent | 84984b79f27399d015c43a51d2b1967838119d34 (diff) | |
| download | mariadb-git-10.2.tar.gz | |
MDEV-28606 Server crashes in st_select_lex::add_table_to_list instead of error 1066: Not unique table/aliasmariadb-10.2.44bb-10.2-release10.2
10.2-only fix, 10.3+ uses LEX_STRING's and checks the length first
| -rw-r--r-- | mysql-test/r/parser.result | 8 | ||||
| -rw-r--r-- | mysql-test/t/parser.test | 9 | ||||
| -rw-r--r-- | sql/sql_parse.cc | 2 |
3 files changed, 18 insertions, 1 deletions
diff --git a/mysql-test/r/parser.result b/mysql-test/r/parser.result index e8bf9d12a33..870bbfbf904 100644 --- a/mysql-test/r/parser.result +++ b/mysql-test/r/parser.result @@ -1409,5 +1409,13 @@ Database Collation latin1_swedish_ci drop function a; set timestamp=default; # +# MDEV-28606 Server crashes in st_select_lex::add_table_to_list instead of error 1066: Not unique table/alias +# +create table t1 (i int) ; +insert into t1 values (1),(2),(3) ; +with cte1 as (select i from t1) select i from cte1 natural join cte1; +ERROR 42000: Not unique table/alias: 'cte1' +drop table t1; +# # End of 10.2 tests # diff --git a/mysql-test/t/parser.test b/mysql-test/t/parser.test index 095d274724b..4d35a53ecf6 100644 --- a/mysql-test/t/parser.test +++ b/mysql-test/t/parser.test @@ -1433,5 +1433,14 @@ drop function a; set timestamp=default; --echo # +--echo # MDEV-28606 Server crashes in st_select_lex::add_table_to_list instead of error 1066: Not unique table/alias +--echo # +create table t1 (i int) ; +insert into t1 values (1),(2),(3) ; +--error 1066 +with cte1 as (select i from t1) select i from cte1 natural join cte1; +drop table t1; + +--echo # --echo # End of 10.2 tests --echo # diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc index 457849a7569..5295fb5e0aa 100644 --- a/sql/sql_parse.cc +++ b/sql/sql_parse.cc @@ -8040,7 +8040,7 @@ TABLE_LIST *st_select_lex::add_table_to_list(THD *thd, tables=tables->next_local) { if (!my_strcasecmp(table_alias_charset, alias_str, tables->alias) && - !strcmp(ptr->db, tables->db)) + !strcmp(safe_str(ptr->db), safe_str(tables->db))) { my_error(ER_NONUNIQ_TABLE, MYF(0), alias_str); /* purecov: tested */ DBUG_RETURN(0); /* purecov: tested */ |