[PATCH v6 1/2] show-index: fix uninitialized hash function
- From
Abhijeet Sonar <abhijeet.nkt@gmail.com>
- Date
- Nov 9, 2024, 09:27 UTC
- Message-ID
- <20241109092739.14276-2-abhijeet.nkt@gmail.com>
- In-Reply-To
- <20241109092739.14276-1-abhijeet.nkt@gmail.com>
In c8aed5e8da (repository: stop setting SHA1 as the default object hash), we got rid of the default hash algorithm for the_repository. Due to this change, it is now the responsibility of the callers to set their own default when this is not present.
As stated in the docs, show-index should use SHA1 as the default hash algorithm when run outside a repository. Make sure this promise is met by falling back to SHA1 when the_hash_algo is not present (i.e. when the command is run outside a repository). Also add a test that verifies this behavior.
Signed-off-by: Abhijeet Sonar <abhijeet.nkt@gmail.com> --- builtin/show-index.c | 9 +++++++++ t/t5300-pack-object.sh | 4 ++++ 2 files changed, 13 insertions(+)
diff --git a/builtin/show-index.c b/builtin/show-index.c index f164c01bbe..b5e337869d 100644 --- a/builtin/show-index.c +++ b/builtin/show-index.c @@ -38,6 +38,15 @@ int cmd_show_index(int argc, repo_set_hash_algo(the_repository, hash_algo); } + /* + * Fallback to SHA1 if we are running outside of a repository. + * + * TODO: Figure out and implement a way to detect the hash algorithm in use by the + * the index file passed in and use that instead. + */ + if (!the_hash_algo) + repo_set_hash_algo(the_repository, GIT_HASH_SHA1); + hashsz = the_hash_algo->rawsz; if (fread(top_index, 2 * 4, 1, stdin) != 1) diff --git a/t/t5300-pack-object.sh b/t/t5300-pack-object.sh index 3b9dae331a..51fed26cc4 100755 --- a/t/t5300-pack-object.sh +++ b/t/t5300-pack-object.sh @@ -523,6 +523,10 @@ test_expect_success 'index-pack --strict <pack> works in non-repo' ' test_path_is_file foo.idx ' +test_expect_success SHA1 'show-index works OK outside a repository' ' + nongit git show-index <foo.idx +' + test_expect_success !PTHREADS,!FAIL_PREREQS \ 'index-pack --threads=N or pack.threads=N warns when no pthreads' ' test_must_fail git index-pack --threads=2 2>err &&
-- 2.47.0.107.g34b6ce9b30