From 014299066b475cecada06a950858504fa200156c Mon Sep 17 00:00:00 2001 From: Abhijeet Sonar Date: Sat, 26 Oct 2024 17:39:50 +0530 Subject: [PATCH] show-index: fix uninitialized hash function As stated in the docs, show-index should use SHA1 as the default hash algorithm when run outsize of a repository. However, 'the_hash_algo' is currently left uninitialized if we are not in a repository and no explicit hash function is specified, causing a crash. Fix it by falling back to SHA1 when it is found uninitialized. Also add test that verifies this behaviour. Signed-off-by: Abhijeet Sonar Signed-off-by: Taylor Blau --- builtin/show-index.c | 3 +++ t/t5300-pack-object.sh | 4 ++++ 2 files changed, 7 insertions(+) diff --git a/builtin/show-index.c b/builtin/show-index.c index f164c01bbe..978ae70470 100644 --- a/builtin/show-index.c +++ b/builtin/show-index.c @@ -38,6 +38,9 @@ int cmd_show_index(int argc, repo_set_hash_algo(the_repository, hash_algo); } + 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 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 err &&