From: Patrick Steinhardt <ps@pks.im>
To: git@vger.kernel.org
Subject: [PATCH 2/2] builtin/hash-object: fix uninitialized hash function
Date: Mon, 13 May 2024 09:15:13 +0200 [thread overview]
Message-ID: <1e010f798ce50e51100bd46564a69ddbd31d29ea.1715582857.git.ps@pks.im> (raw)
In-Reply-To: <cover.1715582857.git.ps@pks.im>
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The git-hash-object(1) command allows users to hash an object even
without a repository. Starting with c8aed5e8da (repository: stop setting
SHA1 as the default object hash, 2024-05-07), this will make us hit an
uninitialized hash function, which subsequently leads to a segfault.
Fix this by falling back to SHA-1 explicitly when running outside of a
Git repository. Eventually, we should expose this function as a command
line option to the users so that they can pick which object hash to use
by themselves.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
builtin/hash-object.c | 7 +++++++
t/t1007-hash-object.sh | 6 ++++++
2 files changed, 13 insertions(+)
diff --git a/builtin/hash-object.c b/builtin/hash-object.c
index 82ca6d2bfd..0855f4f8aa 100644
--- a/builtin/hash-object.c
+++ b/builtin/hash-object.c
@@ -123,6 +123,13 @@ int cmd_hash_object(int argc, const char **argv, const char *prefix)
else
prefix = setup_git_directory_gently(&nongit);
+ /*
+ * TODO: Allow the hash algorithm to be configured by the user via a
+ * command line option when not using `-w`.
+ */
+ if (nongit)
+ repo_set_hash_algo(the_repository, GIT_HASH_SHA1);
+
if (vpath && prefix) {
vpath_free = prefix_filename(prefix, vpath);
vpath = vpath_free;
diff --git a/t/t1007-hash-object.sh b/t/t1007-hash-object.sh
index 64aea38486..4c138c6ca4 100755
--- a/t/t1007-hash-object.sh
+++ b/t/t1007-hash-object.sh
@@ -260,4 +260,10 @@ test_expect_success '--literally with extra-long type' '
echo example | git hash-object -t $t --literally --stdin
'
+test_expect_success '--stdin outside of repository' '
+ nongit git hash-object --stdin <hello >actual &&
+ echo "$(test_oid hello)" >expect &&
+ test_cmp expect actual
+'
+
test_done
--
2.45.GIT
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next prev parent reply other threads:[~2024-05-13 7:15 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-13 7:15 [PATCH 0/2] Fix use of uninitialized hash algos Patrick Steinhardt
2024-05-13 7:15 ` [PATCH 1/2] builtin/patch-id: fix uninitialized hash function Patrick Steinhardt
2024-05-13 7:15 ` Patrick Steinhardt [this message]
2024-05-14 0:16 ` [PATCH 2/2] builtin/hash-object: " Junio C Hamano
2024-05-13 16:01 ` [PATCH 0/2] Fix use of uninitialized hash algos Junio C Hamano
2024-05-13 18:36 ` Junio C Hamano
2024-05-13 19:21 ` [PATCH v2 0/4] Fix use of uninitialized hash algorithms Junio C Hamano
2024-05-13 19:21 ` [PATCH v2 1/4] setup: add an escape hatch for "no more default hash algorithm" change Junio C Hamano
2024-05-13 19:48 ` Kyle Lippincott
2024-05-13 19:21 ` [PATCH v2 2/4] t1517: test commands that are designed to be run outside repository Junio C Hamano
2024-05-13 19:57 ` Kyle Lippincott
2024-05-13 20:33 ` Junio C Hamano
2024-05-13 21:00 ` Junio C Hamano
2024-05-13 21:07 ` Kyle Lippincott
2024-05-13 19:21 ` [PATCH v2 3/4] builtin/patch-id: fix uninitialized hash function Junio C Hamano
2024-05-13 19:21 ` [PATCH v2 4/4] builtin/hash-object: " Junio C Hamano
2024-05-13 21:28 ` [PATCH 5/4] apply: " Junio C Hamano
2024-05-13 22:41 ` [PATCH v3 0/5] Fix use of uninitialized hash algorithms Junio C Hamano
2024-05-13 22:41 ` [PATCH v3 1/5] setup: add an escape hatch for "no more default hash algorithm" change Junio C Hamano
2024-05-13 22:41 ` [PATCH v3 2/5] t1517: test commands that are designed to be run outside repository Junio C Hamano
2024-05-13 22:41 ` [PATCH v3 3/5] builtin/patch-id: fix uninitialized hash function Junio C Hamano
2024-05-13 23:11 ` Junio C Hamano
2024-05-14 4:31 ` Patrick Steinhardt
2024-05-14 15:52 ` Junio C Hamano
2024-05-13 22:41 ` [PATCH v3 4/5] builtin/hash-object: " Junio C Hamano
2024-05-13 23:13 ` Junio C Hamano
2024-05-14 4:32 ` Patrick Steinhardt
2024-05-14 15:55 ` Junio C Hamano
2024-05-13 22:41 ` [PATCH v3 5/5] apply: " Junio C Hamano
2024-05-14 1:14 ` [PATCH v4 0/5] Fix use of uninitialized hash algorithms Junio C Hamano
2024-05-14 1:14 ` [PATCH v4 1/5] setup: add an escape hatch for "no more default hash algorithm" change Junio C Hamano
2024-05-14 4:32 ` Patrick Steinhardt
2024-05-14 15:05 ` Junio C Hamano
2024-05-14 17:19 ` Junio C Hamano
2024-05-15 12:23 ` Patrick Steinhardt
2024-05-16 15:31 ` Junio C Hamano
2024-05-14 1:14 ` [PATCH v4 2/5] t1517: test commands that are designed to be run outside repository Junio C Hamano
2024-05-14 4:32 ` Patrick Steinhardt
2024-05-14 15:08 ` Junio C Hamano
2024-05-15 12:24 ` Patrick Steinhardt
2024-05-15 14:15 ` Junio C Hamano
2024-05-15 14:25 ` Patrick Steinhardt
2024-05-15 15:40 ` Junio C Hamano
2024-05-14 1:14 ` [PATCH v4 3/5] builtin/patch-id: fix uninitialized hash function Junio C Hamano
2024-05-14 1:14 ` [PATCH v4 4/5] builtin/hash-object: " Junio C Hamano
2024-05-17 23:49 ` Junio C Hamano
2024-05-20 21:19 ` Junio C Hamano
2024-05-20 22:45 ` Junio C Hamano
2024-05-14 1:14 ` [PATCH v4 5/5] apply: " Junio C Hamano
2024-05-20 23:14 ` [PATCH v5 0/5] Fix use of uninitialized hash algorithms Junio C Hamano
2024-05-20 23:14 ` [PATCH v5 1/5] setup: add an escape hatch for "no more default hash algorithm" change Junio C Hamano
2024-05-21 7:57 ` Patrick Steinhardt
2024-05-21 15:59 ` Junio C Hamano
2024-05-20 23:14 ` [PATCH v5 2/5] t1517: test commands that are designed to be run outside repository Junio C Hamano
2024-05-20 23:14 ` [PATCH v5 3/5] builtin/patch-id: fix uninitialized hash function Junio C Hamano
2024-05-20 23:14 ` [PATCH v5 4/5] builtin/hash-object: " Junio C Hamano
2024-05-20 23:14 ` [PATCH v5 5/5] apply: " Junio C Hamano
2024-05-21 7:58 ` Patrick Steinhardt
2024-05-21 13:36 ` Junio C Hamano
2024-05-21 7:58 ` [PATCH v5 0/5] Fix use of uninitialized hash algorithms Patrick Steinhardt
2024-05-21 18:07 ` Junio C Hamano
2024-05-22 4:51 ` Patrick Steinhardt
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