Re: Add test module for Custom WAL Resource Manager feature

On Tue, Nov 15, 2022 at 04:29:08PM -0800, Jeff Davis wrote:
> Committed with some significant revisions (ae168c794f):
> 
>   * changed to insert a deterministic message, rather than a random
> one, which allows more complete testing
>   * fixed a couple bugs
>   * used a static initializer for the RmgrData rather than memset,
> which shows a better example
> 
> I also separately committed a patch to mark the argument of
> RegisterCustomRmgr as "const".

This is causing the CI job to fail for 32-bit builds.  Here is one
example in my own repository for what looks like an alignment issue: 
https://github.com/michaelpq/postgres/runs/9514121172

[01:17:23.152] ok 1 - custom WAL resource manager has successfully registered with the server
[01:17:23.152] not ok 2 - custom WAL resource manager has successfully written a WAL record
[01:17:23.152] 1..2
[01:17:23.152] # test failed
[01:17:23.152] --- stderr ---
[01:17:23.152] #   Failed test 'custom WAL resource manager has successfully written a WAL record'
[01:17:23.152] #   at /tmp/cirrus-ci-build/src/test/modules/test_custom_rmgrs/t/001_basic.pl line 56.
[01:17:23.152] #          got: '0/151E088|test_custom_rmgrs|TEST_CUSTOM_RMGRS_MESSAGE|40|14|0|payload (10 bytes): payload123'
[01:17:23.152] #     expected: '0/151E088|test_custom_rmgrs|TEST_CUSTOM_RMGRS_MESSAGE|44|18|0|payload (10 bytes): payload123'
[01:17:23.152] # Looks like you failed 1 test of 2.
[01:17:23.152] 

Not many buildfarm members test 32b builds, but lapwing does.
--
Michael