In 10f5c52656 (submodule: avoid auto-discovery in prepare_submodule_repo_env(), 2016-09-01) we fixed a bug when doing a recursive fetch with submodule in the case where the submodule is broken due to whatever reason. The test to exercise that the fix works breaks the submodule by deleting its `HEAD` reference, which will cause us to not detect the directory as a Git repository. While this is perfectly fine in theory, this way of breaking the repo becomes problematic with the current efforts to introduce another refdb backend into Git. The new reftable backend has a stub HEAD file that always contains "ref: refs/heads/.invalid" so that tools continue to be able to detect such a repository. But as the reftable backend will never delete this file even when asked to delete `HEAD` the current way to delete the `HEAD` reference will stop working. Adapt the code to instead delete the objects database. Going back with this new way to cause breakage confirms that it triggers the infinite recursion just the same, and there are no equivalent ongoing efforts to replace the object database with an alternate backend. Signed-off-by: Patrick Steinhardt <ps@xxxxxx> --- t/t5526-fetch-submodules.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/t/t5526-fetch-submodules.sh b/t/t5526-fetch-submodules.sh index 7ab220fa31..5e566205ba 100755 --- a/t/t5526-fetch-submodules.sh +++ b/t/t5526-fetch-submodules.sh @@ -771,7 +771,7 @@ test_expect_success 'fetching submodule into a broken repository' ' git -C dst fetch --recurse-submodules && # Break the receiving submodule - test-tool -C dst/sub ref-store main delete-refs REF_NO_DEREF msg HEAD && + rm -r dst/sub/.git/objects && # NOTE: without the fix the following tests will recurse forever! # They should terminate with an error. -- 2.43.GIT
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