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Jeff King 92fb0db94c pack-objects: add checks for duplicate objects 
Additional checks are added in have_duplicate_entry() and
obj_is_packed() to avoid duplicate objects in the reuse
bitmap. It was probably buggy to not have such a check
before.

Git as a client would never both asks for a tag by sha1 and
specify "include-tag", but libgit2 will, so a libgit2 client
cloning from a Git server would trigger the bug.

If a client both asks for a tag by sha1 and specifies
"include-tag", we may end up including the tag in the reuse
bitmap (due to the first thing), and then later adding it to
the packlist (due to the second). This results in duplicate
objects in the pack, which git chokes on. We should notice
that we are already including it when doing the include-tag
portion, and avoid adding it to the packlist.

The simplest place to fix this is right in add_ref_tag(),
where we could avoid peeling the tag at all if we know that
we are already including it. However, this pushes the check
instead into have_duplicate_entry(). This fixes not only
this case, but also means that we cannot have any similar
problems lurking in other code.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-23 10:51:50 -08:00
..
add.c add: error appropriately on repository with no commits 2019-04-10 12:52:50 +09:00
am.c Merge branch 'nd/switch-and-restore' 2019-07-09 15:25:44 -07:00
annotate.c
apply.c
archive.c
bisect--helper.c bisect--helper: verify HEAD could be parsed before continuing 2019-05-28 10:51:01 -07:00
blame.c Merge branch 'br/blame-ignore' 2019-07-19 11:30:20 -07:00
branch.c Merge branch 'po/doc-branch' 2019-07-09 15:25:34 -07:00
bundle.c
cat-file.c sha1-file.c: remove the_repo from read_object_with_reference() 2019-06-27 12:45:17 -07:00
check-attr.c
check-ignore.c
check-mailmap.c
check-ref-format.c
checkout-index.c Merge branch 'nd/the-index-final' 2019-02-06 22:05:23 -08:00
checkout.c l10n: reformat some localized strings for v2.23.0 2019-08-06 12:43:43 -07:00
clean.c clean: show an error message when the path is too long 2019-07-19 08:12:44 -07:00
clone.c Merge branch 'mt/dir-iterator-updates' 2019-07-25 13:59:22 -07:00
column.c builtin: consistently pass cmd_* prefix to parse_options 2019-05-13 14:22:53 +09:00
commit-graph.c commit-graph: verify chains with --shallow mode 2019-06-19 20:46:26 -07:00
commit-tree.c commit-tree: utilize parse-options api 2019-03-08 10:31:24 +09:00
commit.c Merge branch 'ra/cherry-pick-revert-skip' 2019-07-19 11:30:21 -07:00
config.c Merge branch 'jk/save-getenv-result' 2019-01-29 12:47:54 -08:00
count-objects.c
credential.c
describe.c hashmap: convert sha1hash() to oidhash() 2019-06-20 10:44:22 -07:00
diff-files.c
diff-index.c
diff-tree.c Merge branch 'en/combined-all-paths' 2019-03-07 09:59:54 +09:00
diff.c Merge branch 'nd/diff-parseopt-4' 2019-04-25 16:41:12 +09:00
difftool.c Merge branch 'js/difftool-no-index' 2019-05-19 16:45:35 +09:00
env--helper.c env--helper: mark a file-local symbol as static 2019-07-11 14:31:04 -07:00
fast-export.c object: convert lookup_object() to use object_id 2019-06-20 10:18:09 -07:00
fetch-pack.c fetch_pack(): drop unused parameters 2019-03-20 18:34:09 +09:00
fetch.c l10n: reformat some localized strings for v2.23.0 2019-08-06 12:43:43 -07:00
fmt-merge-msg.c
for-each-ref.c parse_opt_ref_sorting: always use with NONEG flag 2019-03-21 12:03:35 +09:00
fsck.c object: convert lookup_object() to use object_id 2019-06-20 10:18:09 -07:00
gc.c Merge branch 'ds/commit-graph-incremental' 2019-07-19 11:30:20 -07:00
get-tar-commit-id.c builtin/get-tar-commit-id: make hash size independent 2019-04-01 11:57:39 +09:00
grep.c sha1-file.c: remove the_repo from read_object_with_reference() 2019-06-27 12:45:17 -07:00
hash-object.c builtin: consistently pass cmd_* prefix to parse_options 2019-05-13 14:22:53 +09:00
help.c completion: add more parameter value completion 2019-02-20 12:31:56 -08:00
index-pack.c index-pack: prefetch missing REF_DELTA bases 2019-05-15 11:01:40 +09:00
init-db.c Merge branch 'nd/init-relative-template-fix' 2019-06-13 13:18:46 -07:00
interpret-trailers.c interpret-trailers: load default config 2019-06-19 07:12:49 -07:00
log.c log: really flip the --mailmap default 2019-08-02 09:55:03 -07:00
ls-files.c cleanup: fix possible overflow errors in binary search, part 2 2019-06-13 11:28:53 -07:00
ls-remote.c parse_opt_ref_sorting: always use with NONEG flag 2019-03-21 12:03:35 +09:00
ls-tree.c
mailinfo.c
mailsplit.c
merge-base.c
merge-file.c
merge-index.c
merge-ours.c
merge-recursive.c Merge branch 'nd/the-index-final' 2019-02-06 22:05:23 -08:00
merge-tree.c tree-walk.c: remove the_repo from fill_tree_descriptor() 2019-06-27 12:45:17 -07:00
merge.c Merge branch 'ea/merge-code-cleanup' 2019-07-19 11:30:23 -07:00
mktag.c
mktree.c mktree: drop unused length parameter 2019-05-13 14:22:54 +09:00
multi-pack-index.c multi-pack-index: prepare 'repack' subcommand 2019-06-11 10:34:40 -07:00
mv.c
name-rev.c object: convert lookup_object() to use object_id 2019-06-20 10:18:09 -07:00
notes.c
pack-objects.c pack-objects: add checks for duplicate objects 2020-01-23 10:51:50 -08:00
pack-redundant.c object-store: rename and expand packed_git's sha1 member 2019-04-01 11:57:38 +09:00
pack-refs.c Honor core.precomposeUnicode in more places 2019-04-26 10:54:03 +09:00
patch-id.c format-patch: make --base patch-id output stable 2019-05-08 19:27:43 +09:00
prune-packed.c Merge branch 'rj/prune-packed-excess-args' 2019-03-07 09:59:55 +09:00
prune.c object: convert lookup_object() to use object_id 2019-06-20 10:18:09 -07:00
pull.c pull: add --[no-]show-forced-updates passthrough 2019-06-21 09:38:29 -07:00
push.c
range-diff.c builtin: consistently pass cmd_* prefix to parse_options 2019-05-13 14:22:53 +09:00
read-tree.c cmd_{read,write}_tree: rename "unused" variable that is used 2019-05-13 14:22:53 +09:00
rebase.c Merge branch 'js/rebase-cleanup' 2019-07-29 12:39:14 -07:00
receive-pack.c Merge branch 'jk/check-connected-with-alternates' 2019-07-19 11:30:21 -07:00
reflog.c Merge branch 'jk/loose-object-cache-oid' 2019-02-06 22:05:27 -08:00
remote-ext.c
remote-fd.c
remote.c remove_all_fetch_refspecs(): drop unused "remote" parameter 2019-05-13 14:22:54 +09:00
repack.c repack: simplify handling of auto-bitmaps and .keep files 2019-07-31 13:26:25 -07:00
replace.c Merge branch 'cc/replace-graft-peel-tags' 2019-05-09 00:37:24 +09:00
rerere.c
reset.c Merge branch 'nd/tree-walk-with-repo' 2019-07-19 11:30:21 -07:00
rev-list.c rev-list: teach --no-object-names to enable piping 2019-06-20 13:13:04 -07:00
rev-parse.c
revert.c Merge branch 'ra/cherry-pick-revert-skip' 2019-07-19 11:30:21 -07:00
rm.c Merge branch 'jc/denoise-rm-to-resolve' 2019-07-25 13:59:24 -07:00
send-pack.c
shortlog.c
show-branch.c show-branch: drop unused parameter from show_independent() 2019-05-13 14:22:54 +09:00
show-index.c
show-ref.c Merge branch 'en/unicode-in-refnames' 2019-05-19 16:45:30 +09:00
stash.c Merge branch 'tg/stash-keep-index-with-removed-paths' 2019-07-25 13:59:23 -07:00
stripspace.c
submodule--helper.c Merge branch 'ms/submodule-foreach-fix' 2019-07-09 15:25:46 -07:00
symbolic-ref.c
tag.c tag: add tag.gpgSign config option to force all tags be GPG-signed 2019-06-05 14:39:28 -07:00
unpack-file.c
unpack-objects.c object: convert lookup_object() to use object_id 2019-06-20 10:18:09 -07:00
update-index.c tree-walk.c: remove the_repo from get_tree_entry() 2019-06-27 12:45:17 -07:00
update-ref.c
update-server-info.c
upload-archive.c
upload-pack.c builtin: consistently pass cmd_* prefix to parse_options 2019-05-13 14:22:53 +09:00
var.c
verify-commit.c Merge branch 'jk/no-system-includes-in-dot-c' 2019-07-31 14:38:56 -07:00
verify-pack.c
verify-tag.c verify-tag: drop signal.h include 2019-06-19 08:19:21 -07:00
worktree.c Merge branch 'nd/worktree-name-sanitization' 2019-06-13 13:19:40 -07:00
write-tree.c cmd_{read,write}_tree: rename "unused" variable that is used 2019-05-13 14:22:53 +09:00