Bug 2218970

Created attachment 1973445 [details]
Patch from https://github.com/perl5-dbi/DBD-mysql/issues/78 for EL9

Description of problem:
When using a mariadb database for looking up the tagged threshold, it always returns 0 for values obtained from the database.  This is affecting AlmaLinux 8 and 9

Version-Release number of selected component (if applicable):
* EL9
** amavis 2.13.0-4.el9
** perl-DBD-MySQL 4.050-13
* EL8
** amavis 2.12.1-5.el8
** perl-DBD-MySQL 4.046-3

How reproducible:
Always

Steps to Reproduce:
1.Install Amavis
2. Configure @lookup_sql_dsn to point at a mysql database (Schema at https://github.com/srault95/amavisd-new/blob/master/README_FILES/README.sql-mysql)
3. Setup a policy with spam_tag level set to a value like 5,

Actual results:
Jun 27 13:43:25 aggelos-front4 amavis[5795]: (05795-01) spam-tag, <REDACTED> -> <REDACTED>, Yes, score=3.001 tagged_above=-100 required=0 tests=[ALL_TRUSTED=-1, BAYES_99=3.5, BAYES_999=0.5, TVD_SPACE_RATIO=0.001] autolearn=no autolearn_force=no
* required = 0, when it should be 5

Expected results:
Jun 27 15:10:43 aggelos-front4 amavis[147269]: (147269-01) spam-tag, <REDACTED> -> <REDACTED>, No, score=3.001 tagged_above=-100 required=5 tests=[ALL_TRUSTED=-1, BAYES_99=3.5, BAYES_999=0.5, TVD_SPACE_RATIO=0.001] autolearn=no autolearn_force=no


Additional info:
I believe this is due to https://github.com/perl5-dbi/DBD-mysql/issues/78, which seems to be committed to perl-DBD-MySQL master, but not in the 4.046 or 4.050 release

I patched the DBD-MySQL-4.0.50 (obtained from the ticket) provided by AlmaLinux 9 with the attached patch, and this gives me the expected results.