From: Taylor Blau <me@ttaylorr.com>
To: git@vger.kernel.org
Cc: peff@peff.net, gitster@pobox.com
Subject: [PATCH 3/7] list-objects.c: handle unexpected non-blob entries
Date: Thu, 4 Apr 2019 20:37:46 -0700 [thread overview]
Message-ID: <75f20ee26def257aa45dd31cd016ee76f81dcb83.1554435033.git.me@ttaylorr.com> (raw)
In-Reply-To: <cover.1554435033.git.me@ttaylorr.com>
Fix one of the cases described in the previous commit where a tree-entry
that is promised to a blob is in fact a non-blob.
When 'lookup_blob()' returns NULL, it is because Git has cached the
requested object as a non-blob. In this case, prevent a SIGSEGV by
'die()'-ing immediately before attempting to dereference the result.
Signed-off-by: Taylor Blau <me@ttaylorr.com>
---
list-objects.c | 5 +++++
t/t6102-rev-list-unexpected-objects.sh | 5 +++--
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/list-objects.c b/list-objects.c
index dc77361e11..ea04bbdee6 100644
--- a/list-objects.c
+++ b/list-objects.c
@@ -133,6 +133,11 @@ static void process_tree_contents(struct traversal_context *ctx,
base, entry.path);
else {
struct blob *b = lookup_blob(ctx->revs->repo, &entry.oid);
+ if (!b) {
+ die(_("entry '%s' in tree %s has blob mode, "
+ "but is not a blob"),
+ entry.path, oid_to_hex(&tree->object.oid));
+ }
b->object.flags |= NOT_USER_GIVEN;
process_blob(ctx, b, base, entry.path);
}
diff --git a/t/t6102-rev-list-unexpected-objects.sh b/t/t6102-rev-list-unexpected-objects.sh
index 472b08528a..76fe9be30f 100755
--- a/t/t6102-rev-list-unexpected-objects.sh
+++ b/t/t6102-rev-list-unexpected-objects.sh
@@ -19,8 +19,9 @@ test_expect_failure 'traverse unexpected non-blob entry (lone)' '
test_must_fail git rev-list --objects $broken_tree
'
-test_expect_failure 'traverse unexpected non-blob entry (seen)' '
- test_must_fail git rev-list --objects $tree $broken_tree
+test_expect_success 'traverse unexpected non-blob entry (seen)' '
+ test_must_fail git rev-list --objects $tree $broken_tree >output 2>&1 &&
+ test_i18ngrep "is not a blob" output
'
test_expect_success 'setup unexpected non-tree entry' '
--
2.21.0.203.g358da99528
next prev parent reply other threads:[~2019-04-05 3:37 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-05 3:37 [PATCH 0/7] harden unexpected object types checks Taylor Blau
2019-04-05 3:37 ` [PATCH 1/7] t: move 'hex2oct' into test-lib-functions.sh Taylor Blau
2019-04-05 3:37 ` [PATCH 2/7] t: introduce tests for unexpected object types Taylor Blau
2019-04-05 10:50 ` SZEDER Gábor
2019-04-05 18:24 ` Jeff King
2019-04-05 18:42 ` SZEDER Gábor
2019-04-05 18:52 ` Jeff King
2019-04-07 21:00 ` Ævar Arnfjörð Bjarmason
2019-04-09 2:29 ` Taylor Blau
2019-04-09 9:14 ` Ævar Arnfjörð Bjarmason
2019-04-10 1:59 ` Taylor Blau
2019-04-08 5:27 ` Junio C Hamano
2019-04-05 19:25 ` Eric Sunshine
2019-04-05 20:53 ` Jeff King
2019-04-06 5:33 ` Taylor Blau
2019-04-08 6:44 ` Junio C Hamano
2019-04-09 2:30 ` Taylor Blau
2019-04-09 3:28 ` Eric Sunshine
2019-04-09 5:08 ` Taylor Blau
2019-04-09 8:02 ` Eric Sunshine
2019-04-10 1:54 ` Taylor Blau
2019-04-06 5:31 ` Taylor Blau
2019-04-05 18:31 ` Jeff King
2019-04-06 5:23 ` Taylor Blau
2019-04-05 3:37 ` Taylor Blau [this message]
2019-04-05 3:37 ` [PATCH 4/7] list-objects.c: handle unexpected non-tree entries Taylor Blau
2019-04-05 3:37 ` [PATCH 5/7] get_commit_tree(): return NULL for broken tree Taylor Blau
2019-04-05 3:37 ` [PATCH 6/7] rev-list: let traversal die when --missing is not in use Taylor Blau
2019-04-05 18:41 ` Jeff King
2019-04-06 5:36 ` Taylor Blau
2019-04-07 13:41 ` Jeff King
2019-04-09 2:11 ` Taylor Blau
2019-04-05 3:37 ` [PATCH 7/7] rev-list: detect broken root trees Taylor Blau
2019-04-10 2:13 ` [PATCH v2 0/7] harden unexpected object types checks Taylor Blau
2019-04-10 2:13 ` [PATCH v2 1/7] t: move 'hex2oct' into test-lib-functions.sh Taylor Blau
2019-04-10 2:13 ` [PATCH v2 2/7] t: introduce tests for unexpected object types Taylor Blau
2019-04-10 2:13 ` [PATCH v2 3/7] list-objects.c: handle unexpected non-blob entries Taylor Blau
2019-04-10 2:13 ` [PATCH v2 4/7] list-objects.c: handle unexpected non-tree entries Taylor Blau
2019-04-10 2:13 ` [PATCH v2 5/7] get_commit_tree(): return NULL for broken tree Taylor Blau
2019-04-10 2:13 ` [PATCH v2 6/7] rev-list: let traversal die when --missing is not in use Taylor Blau
2019-04-10 2:13 ` [PATCH v2 7/7] rev-list: detect broken root trees Taylor Blau
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: http://vger.kernel.org/majordomo-info.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=75f20ee26def257aa45dd31cd016ee76f81dcb83.1554435033.git.me@ttaylorr.com \
--to=me@ttaylorr.com \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
--cc=peff@peff.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://80x24.org/mirrors/git.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).