Bug #81943 Refactor use_count in the range optimizer
Submitted: 21 Jun 2016 8:24 Modified: 23 Aug 2016 14:18
Reporter: Steinar Gunderson Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Optimizer Severity:S3 (Non-critical)
Version: OS:Any
Assigned to: CPU Architecture:Any

[21 Jun 2016 8:24] Steinar Gunderson
Description:
This is a tracking bug for refactoring the refcounting (use_count) in the range optimizer; it is very subtle and largely undocumented.

How to repeat:
Try to read the sql/opt_range.cc and follow the logic for use_count. Your head will hurt.
[23 Aug 2016 14:18] Paul Dubois
Posted by developer:
 
Fixed in 8.0.1.

Code cleanup. No changelog entry needed.