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MDEV-33768: Memory leak found in the test main.constraints run with --ps-protocol against a server built with the option -DWITH_PROTECT_STATEMENT_MEMROOT

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The discovered memory leak was introduced by the commit
  762bf7a03b
    (MDEV-22602 Disable UPDATE CASCADE for SQL constraints)

The reason why a memory leaked on running the test main.constraints
is that a statement arena was used for allocation a memory
for storing a constraint name. A constraint name is an entity having
temporary nature by its design so runtime arena should be used for its
allocation.
This commit is contained in:
Dmitry Shulga
2024-03-27 20:44:05 +07:00
parent f44e41db38
commit e1876e7f78
3 changed files with 30 additions and 1 deletions
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13
mysql-test/main/constraints.result
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@ -235,3 +235,16 @@ t1 CREATE TABLE `t1` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
drop procedure sp;
drop table t1;
#
# MDEV-33768: Memory leak found in the test main.constraints run with --ps-protocol against a server built with the option -DWITH_PROTECT_STATEMENT_MEMROOT
# This test case was added by reviewer's request.
#
PREPARE stmt FROM 'CREATE TABLE t1 (a INT)';
EXECUTE stmt;
DROP TABLE t1;
EXECUTE stmt;
EXECUTE stmt;
ERROR 42S01: Table 't1' already exists
# Clean up
DROP TABLE t1;
DEALLOCATE PREPARE stmt;