Hi Eric,

On Mon, 2024-05-20 at 04:21 -0400, Eric Sunshine wrote:

The thing failing here is chainlint's own self-test, which you don't
actually need if you're merely building Git. You'd only care about
chainlint (let alone its self-test) if you're modifying tests or
creating new ones. You can bypass chainlint altogether by setting
environment variable GIT_TEST_CHAIN_LINT=0.

That said, chainlint is just a Perl script, and you can manually run
the self-test like this:

    cd t
    make check-chainlint

The output you posted is coming from this line in t/Makefile:

    diff -u '$(CHAINLINTTMP_SQ)'/expect '$(CHAINLINTTMP_SQ)'/actual

Based upon what you pasted, it looks like the "actual" file has no
content. That might suggest a problem with this line which immediately
precedes it:

    $(CHAINLINT) --emit-all '$(CHAINLINTTMP_SQ)'/tests | \
        sed -e 's/^[1-9][0-9]* //' >'$(CHAINLINTTMP_SQ)'/actual && \

"actual" might end up empty if the Perl script isn't emitting anything
for some reason, or if `sed` isn't emitting anything. Presumably you
have a working `sed` installed(?), but do you have Perl installed?

Thanks a lot for the elaborate answer!

I think the problem seems to be that the testsuite is not properly invoked
at all. When I run the testsuite with v2.37.7, all tests are run and pass,
but starting with v2.38.0, it only runs the chainlint test and exists.

I am trying to bisect this now.

Adrian

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