Re: Refactoring the regression tests for more independence

Hi Tom,

> Since you haven't explained what's different about this environment,
> it's hard to comment on these results. But is this really a stock
> Postgres source tree, with no local modifications? The fragment of
> src/test/regress/expected/copy.out that you show does not look
> current.

Yes, this is a stock PostgreSQL source code without any modification,
with `git clean -dfx` etc.

The fragment of copy.out probably doesn't look current because I was
using `git bisect` and I'm on cc50080a82 right now. However the same
tests fail on both `master` and `REL_15_STABLE`. It takes a while on
Raspberry Pi to rebuild Postgres :)

To clarify, the step that is failing is `./quick-build.sh`, or `make
check' in this script to be precise. So postgresql.conf I'm using in
single-install.sh has nothing to do with the problem, this step is not
reached.

Sorry about the confusion regarding the environment differences. GCC
version is 8.3.0, Perl 5.28.1. All in all this is pretty much the
default Raspbian 10 environment, something you would typically get
after setting up your RPi 3 B+ using Raspberry Pi Imager and running
`apt update`, nothing exotic. Please let me know if there are any
other details of interest.

I'll continue looking for the source of the problem and will post an
update as soon as I have one.

--
Best regards,
Aleksander Alekseev