Hi,
Test sys_vars.host_cache_size_auto fails on Linux and AIX with the following error:

 select @@global.host_cache_size;

 @@global.host_cache_size

-632

+653

Default cache size is defined in file mysqld.cc, line ~4271. Comments and code said cache size is 128 + min(connection, 500) + max(connection-500, 0)/20, capped at 2000. With 1000 connection (defined in mysql-test/suite/sys_vars/t/host_cache_size_auto-master.opt), we reach 653. We obtain the right value according to comment and code. Value wanted by the test is different.

Value wanted by the test was changed one year ago by a merge (https://github.com/MariaDB/server/blame/10.5/mysql-test/suite/sys_vars/r/host_cache_size_auto.result).

Can you confirm the old (653) value is the right one? Can you reproduce in a non-ppc architecture?

Thanks,
Étienne.