Re: [PATCH] t5410: avoid hangs in CI runs in the win+Meson test jobs

[Patrick Steinhardt <ps@pks.im>]

On Thu, Jun 05, 2025 at 10:16:45AM +0000, Johannes Schindelin via GitGitGadget wrote:
> diff --git a/t/t5410-receive-pack.sh b/t/t5410-receive-pack.sh
> index f76a22943ef..09d6bfd2a10 100755
> --- a/t/t5410-receive-pack.sh
> +++ b/t/t5410-receive-pack.sh
> @@ -41,7 +41,19 @@ test_expect_success 'with core.alternateRefsPrefixes' '
>  	test_cmp expect actual.haves
>  '
>  
> -test_expect_success 'receive-pack missing objects fails connectivity check' '
> +# The `tee.exe` shipped in Git for Windows v2.49.0 is known to hang frequently
> +# when spawned from `git.exe` and piping its output to `git.exe`. This seems
> +# related to MSYS2 runtime bug fixes regarding the signal handling; Let's just
> +# skip the tests that need to exercise this when the faulty MSYS2 runtime is
> +# detected; The test cases are exercised enough in other matrix jobs of the CI
> +# runs.
> +test_lazy_prereq TEE_DOES_NOT_HANG '
> +	test_have_prereq !MINGW &&
> +	case "$(uname -a)" in *3.5.7-463ebcdc.x86_64*) false;; esac
> +'
> +
> +test_expect_success TEE_DOES_NOT_HANG \
> +	'receive-pack missing objects fails connectivity check' '
>  	test_when_finished rm -rf repo remote.git setup.git &&
>  
>  	git init repo &&

Quite interesting. I any case, I think this is a sensible fix for now.
It's a known bug, we know it's fixed, we just have to wait. And the fact
that this prereq will basically auto-disarm itself once we have the new
version is nice.

I did wonder whether we can maybe rewrite the test so that we compute
our own packfile instead of intercepting the one from git-send-pack(1).
But I'm not sure whether that's really worth it.

Thanks!

Patrick