diff options
author | Alexey Botchkov <holyfoot@askmonty.org> | 2018-01-29 23:58:35 +0400 |
---|---|---|
committer | Alexey Botchkov <holyfoot@askmonty.org> | 2018-01-29 23:58:35 +0400 |
commit | b8540dfea37822ac0d9ed7cad12dd82bd71e0735 (patch) | |
tree | f1d3348347940894525a401f2a0ad85357fc881c | |
parent | 04daf30e9bca85b3241981c53f2293cee1f2de00 (diff) | |
download | mariadb-git-bb-10.0-hf.tar.gz |
MDEV-14696 Server crashes in in prep_alter_part_table on 2nd executionbb-10.0-hf
of PS.
The thd->lex->part_info should be kept intact during prepared
statement execution. We can modify thd->work_part_info instead.
-rw-r--r-- | mysql-test/r/partition.result | 11 | ||||
-rw-r--r-- | mysql-test/t/partition.test | 13 | ||||
-rw-r--r-- | sql/sql_partition.cc | 7 | ||||
-rw-r--r-- | sql/sql_table.cc | 4 |
4 files changed, 33 insertions, 2 deletions
diff --git a/mysql-test/r/partition.result b/mysql-test/r/partition.result index d4b719f3a75..c6669176b3d 100644 --- a/mysql-test/r/partition.result +++ b/mysql-test/r/partition.result @@ -2634,3 +2634,14 @@ alter table t1 drop partition if exists p5; Warnings: Note 1507 Error in list of partitions to DROP DROP TABLE t1; +CREATE TABLE t1 (a INT) ENGINE=MyISAM PARTITION BY RANGE(a) (PARTITION p1 VALUES LESS THAN (0)); +ALTER TABLE t1 ADD PARTITION (PARTITION p2 VALUES LESS THAN (1)); +PREPARE stmt FROM 'ALTER TABLE t1 ADD PARTITION IF NOT EXISTS (PARTITION p2 VALUES LESS THAN (2))'; +EXECUTE stmt; +Warnings: +Note 1517 Duplicate partition name p2 +EXECUTE stmt; +Warnings: +Note 1517 Duplicate partition name p2 +DEALLOCATE PREPARE stmt; +DROP TABLE t1; diff --git a/mysql-test/t/partition.test b/mysql-test/t/partition.test index 754677e9b37..1c8cd0375d6 100644 --- a/mysql-test/t/partition.test +++ b/mysql-test/t/partition.test @@ -2884,3 +2884,16 @@ alter table t1 drop partition if exists p5; DROP TABLE t1; +# +# MDEV-14696 Server crashes in in prep_alter_part_table on 2nd execution of PS. +# + +CREATE TABLE t1 (a INT) ENGINE=MyISAM PARTITION BY RANGE(a) (PARTITION p1 VALUES LESS THAN (0)); +ALTER TABLE t1 ADD PARTITION (PARTITION p2 VALUES LESS THAN (1)); +PREPARE stmt FROM 'ALTER TABLE t1 ADD PARTITION IF NOT EXISTS (PARTITION p2 VALUES LESS THAN (2))'; +EXECUTE stmt; +EXECUTE stmt; + +DEALLOCATE PREPARE stmt; +DROP TABLE t1; + diff --git a/sql/sql_partition.cc b/sql/sql_partition.cc index 02109b22898..5bbc783f142 100644 --- a/sql/sql_partition.cc +++ b/sql/sql_partition.cc @@ -4713,7 +4713,12 @@ uint prep_alter_part_table(THD *thd, TABLE *table, Alter_info *alter_info, DBUG_RETURN(TRUE); } - thd->work_part_info= thd->lex->part_info; + /* + One of these is done in handle_if_exists_option(): + thd->work_part_info= thd->lex->part_info; + or + thd->work_part_info= NULL; + */ if (thd->work_part_info && !(thd->work_part_info= thd->work_part_info->get_clone())) diff --git a/sql/sql_table.cc b/sql/sql_table.cc index 9549884bc4e..a8eddd86dda 100644 --- a/sql/sql_table.cc +++ b/sql/sql_table.cc @@ -5999,6 +5999,8 @@ remove_key_no_warn: #ifdef WITH_PARTITION_STORAGE_ENGINE partition_info *tab_part_info= table->part_info; + thd->work_part_info= thd->lex->part_info; + if (tab_part_info && thd->lex->check_exists) { /* ALTER TABLE ADD PARTITION IF NOT EXISTS */ @@ -6017,7 +6019,7 @@ remove_key_no_warn: ER_SAME_NAME_PARTITION, ER(ER_SAME_NAME_PARTITION), pe->partition_name); alter_info->flags&= ~Alter_info::ALTER_ADD_PARTITION; - thd->lex->part_info= NULL; + thd->work_part_info= NULL; break; } } |