Skip to content

MDEV-40006: Prepared Statement Crash in varchar_upper_cmp_transformer() for '?' #5370

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
bsrikanth-mariadb merged 1 commit into from
Jul 11, 2026
+48 −0
Merged

MDEV-40006: Prepared Statement Crash in varchar_upper_cmp_transformer() for '?' #5370

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
21 changes: 21 additions & 0 deletions mysql-test/main/prepare.result
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -115,3 +115,24 @@ drop table t1,t2;
#
# End of 10.6 tests
#
#
# MDEV-40006: Prepared Statement Crash in varchar_upper_cmp_transformer() for '?'
#
set names utf8mb4;
CREATE TABLE t1 (
id INT,
cs VARCHAR(10),
KEY(cs)
) COLLATE=utf8mb4_general_ci;
INSERT INTO t1 (id, cs) VALUES (1, 'AA1AA'),(2, 'BB2BB'),(3, 'CC3CC');
PREPARE s FROM 'SELECT id, cs FROM t1 WHERE UPPER(cs) IN (?, ?)';
EXECUTE s USING 'AA1AA', 'BB2BB';
id cs
1 AA1AA
2 BB2BB
deallocate prepare s;
DROP TABLE t1;
set names default;
#
# End of 11.4 tests
#
25 changes: 25 additions & 0 deletions mysql-test/main/prepare.test
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -105,3 +105,28 @@ drop table t1,t2;
--echo #
--echo # End of 10.6 tests
--echo #

--echo #
--echo # MDEV-40006: Prepared Statement Crash in varchar_upper_cmp_transformer() for '?'
--echo #

set names utf8mb4;

CREATE TABLE t1 (
id INT,
cs VARCHAR(10),
KEY(cs)
) COLLATE=utf8mb4_general_ci;

INSERT INTO t1 (id, cs) VALUES (1, 'AA1AA'),(2, 'BB2BB'),(3, 'CC3CC');

PREPARE s FROM 'SELECT id, cs FROM t1 WHERE UPPER(cs) IN (?, ?)';
EXECUTE s USING 'AA1AA', 'BB2BB';

deallocate prepare s;
DROP TABLE t1;
set names default;

--echo #
--echo # End of 11.4 tests
--echo #
2 changes: 2 additions & 0 deletions sql/opt_rewrite_remove_casefold.cc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -133,6 +133,8 @@ Item* Item_func_in::varchar_upper_cmp_transformer(THD *thd, uchar *arg)
if ((tmp= is_upper_key_col(arg0)))
{
Item_func_in *cl= (Item_func_in*)deep_copy_with_checks(thd);
if (!cl)
return this;
Item *res;
cl->arguments()[0]= tmp;
cl->walk(&Item::cleanup_excluding_const_fields_processor, 0, 0);
Expand Down
Loading