Bug #111492 Subquery ref count assertion error
Submitted: 20 Jun 2023 6:42 Modified: 24 Jun 2023 1:56
Reporter: Pedro Ferreira Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S6 (Debug Builds)
Version:8.0.33 OS:Ubuntu (22.04)
Assigned to: CPU Architecture:x86 (x86_64)
Tags: subquery

[20 Jun 2023 6:42] Pedro Ferreira 
Description:
Run this query:

SELECT 1 FROM (SELECT 1) y(y) WHERE 0 AND (SELECT 1 FROM (SELECT 1) x(x) GROUP BY y.y HAVING 1 = ALL(SELECT min(x.x)));

It will trigger an assertion error at sql/item.h:3199
assert(m_ref_count > 0);

The compilation parameters are the same as issue 108148:

-DWITH_DEBUG=1 -DWITH_ASAN=ON -DWITH_UBSAN=ON and boost library version 1.77

How to repeat:
Run the query above.
[20 Jun 2023 6:45] MySQL Verification Team 
Hello Pedro Ferreira,

Thank you for the report and feedback.
Observed that 8.0.33 debug build is affected.

regards,
Umesh
[24 Jun 2023 1:56] Jon Stephens 
Fixed in MySQL 8.1.0 by BUG#110369.

See same for more info.

Closed.