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Git with broken hash generation to generate collisions between object IDs. Don't use this! https://undefinedbehavior.de/posts/commit-vandalism/
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Derrick Stolee cb99a34e23 commit-graph: fix writing first commit-graph during fetch 
The previous commit includes a failing test for an issue around
fetch.writeCommitGraph and fetching in a repo with a submodule. Here, we
fix that bug and set the test to "test_expect_success".

The problem arises with this set of commands when the remote repo at
<url> has a submodule. Note that --recurse-submodules is not needed to
demonstrate the bug.

	$ git clone <url> test
	$ cd test
	$ git -c fetch.writeCommitGraph=true fetch origin
	Computing commit graph generation numbers: 100% (12/12), done.
	BUG: commit-graph.c:886: missing parent <hash1> for commit <hash2>
	Aborted (core dumped)

As an initial fix, I converted the code in builtin/fetch.c that calls
write_commit_graph_reachable() to instead launch a "git commit-graph
write --reachable --split" process. That code worked, but is not how we
want the feature to work long-term.

That test did demonstrate that the issue must be something to do with
internal state of the 'git fetch' process.

The write_commit_graph() method in commit-graph.c ensures the commits we
plan to write are "closed under reachability" using close_reachable().
This method walks from the input commits, and uses the UNINTERESTING
flag to mark which commits have already been visited. This allows the
walk to take O(N) time, where N is the number of commits, instead of
O(P) time, where P is the number of paths. (The number of paths can be
exponential in the number of commits.)

However, the UNINTERESTING flag is used in lots of places in the
codebase. This flag usually means some barrier to stop a commit walk,
such as in revision-walking to compare histories. It is not often
cleared after the walk completes because the starting points of those
walks do not have the UNINTERESTING flag, and clear_commit_marks() would
stop immediately.

This is happening during a 'git fetch' call with a remote. The fetch
negotiation is comparing the remote refs with the local refs and marking
some commits as UNINTERESTING.

I tested running clear_commit_marks_many() to clear the UNINTERESTING
flag inside close_reachable(), but the tips did not have the flag, so
that did nothing.

It turns out that the calculate_changed_submodule_paths() method is at
fault. Thanks, Peff, for pointing out this detail! More specifically,
for each submodule, the collect_changed_submodules() runs a revision
walk to essentially do file-history on the list of submodules. That
revision walk marks commits UNININTERESTING if they are simplified away
by not changing the submodule.

Instead, I finally arrived on the conclusion that I should use a flag
that is not used in any other part of the code. In commit-reach.c, a
number of flags were defined for commit walk algorithms. The REACHABLE
flag seemed like it made the most sense, and it seems it was not
actually used in the file. The REACHABLE flag was used in early versions
of commit-reach.c, but was removed by 4fbcca4 (commit-reach: make
can_all_from_reach... linear, 2018-07-20).

Add the REACHABLE flag to commit-graph.c and use it instead of
UNINTERESTING in close_reachable(). This fixes the bug in manual
testing.

Reported-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Helped-by: Jeff King <peff@peff.net>
Helped-by: Szeder Gábor <szeder.dev@gmail.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-25 11:19:16 +09:00
.github point pull requesters to GitGitGadget 2019-03-13 11:07:50 +09:00
block-sha1
builtin fetch: add fetch.writeCommitGraph config setting 2019-09-03 12:06:14 -07:00
ci ci/lib.sh: update a comment about installed P4 and Git-LFS versions 2019-07-08 11:01:48 -07:00
compat Merge branch 'kb/mingw-set-home' 2019-07-19 11:30:23 -07:00
contrib Merge branch 'pw/prompt-cherry-pick-revert-fix' 2019-07-19 11:30:22 -07:00
Documentation fetch: add fetch.writeCommitGraph config setting 2019-09-03 12:06:14 -07:00
ewah ewok_rlw.h: add missing 'inline' to function definition 2018-10-29 10:14:19 +09:00
git-gui
gitk-git Merge git://ozlabs.org/~paulus/gitk 2019-03-18 11:18:49 +09:00
gitweb gitweb: make hash size independent 2019-04-01 11:57:39 +09:00
mergetools mergetools: add support for smerge (Sublime Merge) 2019-04-04 18:21:25 +09:00
negotiator Merge branch 'jt/fetch-negotiator-skipping' 2018-08-02 15:30:46 -07:00
perl Git.pm: make hash size independent 2019-04-01 11:57:39 +09:00
po Merge branch 'fr_review' of git://github.com/jnavila/git 2019-06-07 16:51:09 +08:00
ppc *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
refs Merge branch 'jk/refs-double-abort' 2019-04-16 19:28:11 +09:00
sha1collisiondetection@855827c583 sha1dc: update from upstream 2019-05-14 16:45:01 +09:00
sha1dc sha1dc: update from upstream 2019-05-14 16:45:01 +09:00
sha256 sha256: add an SHA-256 implementation using libgcrypt 2018-11-14 16:54:53 +09:00
t commit-graph: fix writing first commit-graph during fetch 2019-10-25 11:19:16 +09:00
templates
trace2 Merge branch 'sg/trace2-rename' 2019-05-30 10:50:45 -07:00
vcs-svn *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
xdiff xdiff: use xmalloc/xrealloc 2019-04-12 13:34:17 +09:00
.clang-format clang-format: use git grep to generate the ForEachMacros list 2019-06-04 14:50:40 -07:00
.editorconfig editorconfig: indicate settings should be kept in sync 2018-10-09 18:34:15 +09:00
.gitattributes Mark .bat files as requiring CR/LF endings 2019-06-20 14:03:05 -07:00
.gitignore Merge branch 'jh/msvc' 2019-07-09 15:25:45 -07:00
.gitmodules
.mailmap .mailmap: map Clemens Buchacher's mail addresses 2019-02-08 11:14:15 -08:00
.travis.yml travis: remove the hack to build the Windows job on Azure Pipelines 2019-03-01 08:21:26 +09:00
.tsan-suppressions
abspath.c
aclocal.m4
advice.c Merge branch 'ra/cherry-pick-revert-skip' 2019-07-19 11:30:21 -07:00
advice.h Merge branch 'ra/cherry-pick-revert-skip' 2019-07-19 11:30:21 -07:00
alias.c alias.c: mark split_cmdline_strerror() strings for translation 2018-11-12 14:47:09 +09:00
alias.h headers: normalize the spelling of some header guards 2018-10-18 13:39:35 +09:00
alloc.c object_as_type: initialize commit-graph-related fields of 'struct commit' 2019-01-27 16:55:57 -08:00
alloc.h object_as_type: initialize commit-graph-related fields of 'struct commit' 2019-01-27 16:55:57 -08:00
apply.c fill_stat_cache_info(): prepare for an fsmonitor fix 2019-05-28 12:43:42 -07:00
apply.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
archive-tar.c archive: convert struct archiver_args to object_id 2019-04-01 11:57:39 +09:00
archive-zip.c archive: convert struct archiver_args to object_id 2019-04-01 11:57:39 +09:00
archive.c tree-walk.c: remove the_repo from get_tree_entry() 2019-06-27 12:45:17 -07:00
archive.h Merge branch 'dl/no-extern-in-func-decl' 2019-05-13 23:50:32 +09:00
argv-array.c Merge branch 'ma/unpack-trees-free-msgs' 2018-05-30 21:51:29 +09:00
argv-array.h
attr.c Merge branch 'rd/attr.c-comment-typofix' 2019-03-11 16:16:24 +09:00
attr.h Make git_check_attr() a void function 2018-09-12 15:15:34 -07:00
azure-pipelines.yml ci: parallelize testing on Windows 2019-01-29 09:26:47 -08:00
banned.h banned.h: mark strncat() as banned 2019-01-02 10:19:05 -08:00
base85.c
bisect.c bisect: make diff-tree output prettier 2019-03-01 07:31:38 +09:00
bisect.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
blame.c Merge branch 'nd/tree-walk-with-repo' 2019-07-19 11:30:21 -07:00
blame.h Merge branch 'br/blame-ignore' 2019-07-19 11:30:20 -07:00
blob.c object: convert create_object() to use object_id 2019-06-20 10:20:51 -07:00
blob.h blob: allow lookup_blob to handle arbitrary repositories 2018-06-29 10:43:39 -07:00
branch.c Merge branch 'nd/switch-and-restore' 2019-07-09 15:25:44 -07:00
branch.h Merge branch 'nd/switch-and-restore' 2019-07-09 15:25:44 -07:00
builtin.h Merge branch 'nd/switch-and-restore' 2019-07-09 15:25:44 -07:00
bulk-checkin.c convert has_sha1_file() callers to has_object_file() 2019-01-08 09:41:06 -08:00
bulk-checkin.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
bundle.c bundle verify: error out if called without an object database 2019-05-28 13:04:14 -07:00
bundle.h create_bundle(): drop unused "header" parameter 2019-01-24 12:35:44 -08:00
cache-tree.c cache-tree/blame: avoid reusing the DEBUG constant 2019-06-20 14:03:05 -07:00
cache-tree.h cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch 2019-01-24 11:55:06 -08:00
cache.h Merge branch 'nd/tree-walk-with-repo' 2019-07-19 11:30:21 -07:00
chdir-notify.c
chdir-notify.h
check_bindir
check-builtins.sh
checkout.c
checkout.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
color.c color: protect against out-of-bounds reads and writes 2018-08-03 08:52:05 -07:00
color.h range-diff: use dim/bold cues to improve dual color mode 2018-08-13 10:44:52 -07:00
column.c column: drop unused "opts" parameter in item_length() 2019-01-24 12:35:44 -08:00
column.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
combine-diff.c Merge branch 'en/combined-all-paths' 2019-03-07 09:59:54 +09:00
command-list.txt help: move git-diff and git-reset to different groups 2019-05-07 13:04:48 +09:00
commit-graph.c commit-graph: fix writing first commit-graph during fetch 2019-10-25 11:19:16 +09:00
commit-graph.h commit-graph: verify chains with --shallow mode 2019-06-19 20:46:26 -07:00
commit-reach.c commit-graph: fix writing first commit-graph during fetch 2019-10-25 11:19:16 +09:00
commit-reach.h Merge branch 'sb/more-repo-in-api' 2019-02-05 14:26:09 -08:00
commit-slab-decl.h
commit-slab-impl.h commit-slabs: move MAYBE_UNUSED out 2018-10-24 14:52:50 +09:00
commit-slab.h
commit.c Merge branch 'jk/oidhash' 2019-07-09 15:25:43 -07:00
commit.h Merge branch 'dl/no-extern-in-func-decl' 2019-05-13 23:50:32 +09:00
common-main.c trace2: report peak memory usage of the process 2019-04-16 13:37:07 +09:00
config.c repo-settings: parse core.untrackedCache 2019-08-13 13:33:55 -07:00
config.h Merge branch 'dl/no-extern-in-func-decl' 2019-05-13 23:50:32 +09:00
config.mak.dev Makefile: allow for combining DEVELOPER=1 and CFLAGS="..." 2019-02-24 07:35:07 -08:00
config.mak.in
config.mak.uname Merge branch 'js/mingw-gcc-stack-protect' 2019-07-11 15:16:47 -07:00
configure.ac configure: Detect linking style for HP aCC on HP-UX 2019-06-07 10:06:11 -07:00
connect.c trace2:data: add trace2 transport child classification 2019-02-22 15:28:14 -08:00
connect.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
connected.c check_everything_connected: assume alternate ref tips are valid 2019-07-01 10:11:09 -07:00
connected.h clone: do faster object check for partial clones 2019-04-21 14:08:53 +09:00
convert.c Merge branch 'jh/resize-convert-scratch-buffer' 2019-04-10 02:14:22 +09:00
convert.h Merge branch 'en/incl-forward-decl' 2018-08-20 12:41:32 -07:00
copy.c
COPYING
credential-cache--daemon.c style: the opening '{' of a function is in a separate line 2018-12-10 15:41:09 +09:00
credential-cache.c
credential-store.c
credential.c
credential.h
csum-file.c
csum-file.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
ctype.c
daemon.c
date.c completion: add more parameter value completion 2019-02-20 12:31:56 -08:00
decorate.c hashmap: convert sha1hash() to oidhash() 2019-06-20 10:44:22 -07:00
decorate.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
delta-islands.c Merge branch 'jk/oidhash' 2019-07-09 15:25:43 -07:00
delta-islands.h delta-islands: respect progress flag 2019-06-20 13:29:49 -07:00
delta.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
detect-compiler
diff-delta.c
diff-lib.c mark_fsmonitor_valid(): mark the index as changed if needed 2019-05-28 12:43:43 -07:00
diff-no-index.c Merge branch 'nd/diff-parseopt-4' 2019-04-25 16:41:12 +09:00
diff.c Merge branch 'sb/format-patch-base-patch-id-fix' 2019-06-13 13:18:46 -07:00
diff.h Merge branch 'sb/format-patch-base-patch-id-fix' 2019-06-13 13:18:46 -07:00
diffcore-break.c Merge branch 'nd/the-index' 2018-10-19 13:34:02 +09:00
diffcore-delta.c diff.c: reduce implicit dependency on the_index 2018-09-21 09:48:10 -07:00
diffcore-order.c
diffcore-pickaxe.c Merge branch 'nd/the-index' into md/list-objects-filter-by-depth 2019-01-15 15:38:29 -08:00
diffcore-rename.c Merge branch 'jk/oidhash' 2019-07-09 15:25:43 -07:00
diffcore.h diff.c: reduce implicit dependency on the_index 2018-09-21 09:48:10 -07:00
dir-iterator.c
dir-iterator.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
dir.c cleanup: fix possible overflow errors in binary search, part 2 2019-06-13 11:28:53 -07:00
dir.h Merge branch 'dl/no-extern-in-func-decl' 2019-05-13 23:50:32 +09:00
editor.c pager: add a helper function to clear the last line in the terminal 2019-06-24 13:38:46 -07:00
entry.c fill_stat_cache_info(): prepare for an fsmonitor fix 2019-05-28 12:43:42 -07:00
environment.c Merge branch 'jk/save-getenv-result' 2019-01-29 12:47:54 -08:00
exec-cmd.c trace2: create new combined trace facility 2019-02-22 15:27:59 -08:00
exec-cmd.h *.[ch]: remove extern from function declarations using sed 2019-05-05 15:20:08 +09:00
fast-import.c Merge branch 'nd/tree-walk-with-repo' 2019-07-19 11:30:21 -07:00
fetch-negotiator.c repo-settings: create feature.experimental setting 2019-08-13 13:33:55 -07:00
fetch-negotiator.h repo-settings: create feature.experimental setting 2019-08-13 13:33:55 -07:00
fetch-object.c fetch-object: set exact_oid when fetching 2018-09-13 13:57:31 -07:00
fetch-object.h fetch-object.h: add missing declaration (hdr-check) 2018-10-29 10:14:17 +09:00
fetch-pack.c repo-settings: create feature.experimental setting 2019-08-13 13:33:55 -07:00
fetch-pack.h fetch_pack(): drop unused parameters 2019-03-20 18:34:09 +09:00
fmt-merge-msg.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
fsck.c Merge branch 'br/blame-ignore' 2019-07-19 11:30:20 -07:00
fsck.h fsck: use oidset instead of oid_array for skipList 2018-09-12 15:17:46 -07:00
fsmonitor.c Merge branch 'cb/fsmonitor-intfix' 2019-07-09 15:25:38 -07:00
fsmonitor.h mark_fsmonitor_valid(): mark the index as changed if needed 2019-05-28 12:43:43 -07:00
fuzz-commit-graph.c fuzz-commit-graph: initialize repo object 2019-02-07 13:02:26 -08:00
fuzz-pack-headers.c fuzz: add basic fuzz testing target. 2018-10-15 14:28:59 +09:00
fuzz-pack-idx.c fuzz: add fuzz testing for packfile indices. 2018-10-15 14:29:03 +09:00
generate-cmdlist.sh help -a: do not list commands that are excluded from the build 2019-04-19 14:03:24 +09:00
gettext.c gettext: always use UTF-8 on native Windows 2019-07-03 14:03:32 -07:00
gettext.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
git-add--interactive.perl Merge branch 'nd/switch-and-restore' 2019-07-09 15:25:44 -07:00
git-archimport.perl
git-bisect.sh bisect--helper: bisect_start shell function partially in C 2019-01-02 10:23:03 -08:00
git-compat-util.h msvc: add a compile-time flag to allow detailed heap debugging 2019-06-25 10:46:57 -07:00
git-cvsexportcommit.perl cvsexportcommit: force crlf translation 2019-05-07 18:23:27 +09:00
git-cvsimport.perl
git-cvsserver.perl
git-difftool--helper.sh mergetool: use get_merge_tool function 2019-05-13 23:11:59 +09:00
git-filter-branch.sh Merge branch 'mb/filter-branch-optim' 2018-07-18 12:20:32 -07:00
git-instaweb.sh git-instaweb: add Python builtin http.server support 2019-01-28 10:57:44 -08:00
git-legacy-stash.sh legacy stash: fix "rudimentary backport of -q" 2019-03-08 10:37:58 +09:00
git-merge-octopus.sh
git-merge-one-file.sh
git-merge-resolve.sh
git-mergetool--lib.sh Merge branch 'dl/difftool-mergetool' 2019-05-19 16:45:30 +09:00
git-mergetool.sh mergetool: use shell variable magic instead of awk 2019-06-12 13:20:56 -07:00
git-p4.py Merge branch 'am/p4-branches-excludes' 2019-07-09 15:25:40 -07:00
git-parse-remote.sh
git-quiltimport.sh git-quiltimport: add --keep-non-patch option 2019-01-07 15:29:34 -08:00
git-rebase--preserve-merges.sh rebase: fold git-rebase--common into the -p backend 2019-05-15 10:57:32 +09:00
git-request-pull.sh request-pull: warn if the remote object is not the same as the local one 2019-05-28 13:06:25 -07:00
git-send-email.perl Merge branch 'ab/send-email-transferencoding-fix' 2019-06-13 13:18:46 -07:00
git-sh-i18n.sh i18n: make GETTEXT_POISON a runtime option 2018-11-09 11:25:19 +09:00
git-sh-setup.sh stash: optionally use the scripted version again 2019-03-07 09:41:40 +09:00
git-submodule.sh Merge branch 'km/empty-repo-is-still-a-repo' 2019-05-09 00:37:23 +09:00
git-svn.perl
GIT-VERSION-GEN The first batch after 2.22 2019-06-13 13:23:03 -07:00
git-web--browse.sh git-web--browse.sh: use the $( ... ) construct for command substitution 2014-04-23 15:17:02 -07:00
git.c Merge branch 'nd/switch-and-restore' 2019-07-09 15:25:44 -07:00
git.rc mingw: embed a manifest to trick UAC into Doing The Right Thing 2019-06-27 12:55:45 -07:00
gpg-interface.c Merge branch 'mg/gpg-fingerprint' 2018-11-03 00:53:58 +09:00
gpg-interface.h gpg-interface.c: obtain primary key fingerprint as well 2018-10-23 08:00:43 +09:00
graph.c Merge branch 'np/log-graph-octopus-fix' 2018-10-26 14:22:11 +09:00
graph.h
grep.c grep: fail if call could output and name is null 2019-05-28 10:57:07 -07:00
grep.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
hash.h hash.h: move object_id definition from cache.h 2019-06-20 10:40:42 -07:00
hashmap.c
hashmap.h hashmap: convert sha1hash() to oidhash() 2019-06-20 10:44:22 -07:00
help.c Merge branch 'jk/help-unknown-ref-fix' 2019-06-13 13:19:42 -07:00
help.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
hex.c hex: introduce functions to print arbitrary hashes 2018-11-14 16:54:52 +09:00
http-backend.c http-backend: allow 64-character hex names 2019-04-01 11:57:38 +09:00
http-fetch.c
http-push.c object: convert lookup_object() to use object_id 2019-06-20 10:18:09 -07:00
http-walker.c Merge branch 'bc/hash-transition-16' 2019-04-25 16:41:17 +09:00
http.c Make fread/fwrite-like functions in http.c more like fread/fwrite. 2019-05-08 12:15:25 +09:00
http.h Merge branch 'dl/no-extern-in-func-decl' 2019-05-13 23:50:32 +09:00
ident.c Merge branch 'ps/stash-in-c' 2019-04-22 11:14:43 +09:00
imap-send.c Merge branch 'nd/imap-send-typofix' 2019-02-12 09:00:25 -08:00
INSTALL
interdiff.c interdiff: teach show_interdiff() to indent interdiff 2018-07-23 12:50:06 -07:00
interdiff.h interdiff: teach show_interdiff() to indent interdiff 2018-07-23 12:50:06 -07:00
iterator.h
json-writer.c json_writer: new routines to create JSON data 2018-07-16 13:55:39 -07:00
json-writer.h json-writer.h: add missing include (hdr-check) 2018-09-20 11:50:00 -07:00
khash.h hashmap: convert sha1hash() to oidhash() 2019-06-20 10:44:22 -07:00
kwset.c Merge branch 'js/gcc-8-and-9' 2019-07-09 15:25:41 -07:00
kwset.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
levenshtein.c
levenshtein.h
LGPL-2.1
line-log.c tree-walk.c: remove the_repo from get_tree_entry() 2019-06-27 12:45:17 -07:00
line-log.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
line-range.c line-range.c: remove implicit dependency on the_index 2018-09-21 09:51:18 -07:00
line-range.h line-range.c: remove implicit dependency on the_index 2018-09-21 09:51:18 -07:00
linear-assignment.c linear-assignment: fix potential out of bounds memory access 2018-09-14 09:10:26 -07:00
linear-assignment.h linear-assignment: a function to solve least-cost assignment problems 2018-08-13 10:44:50 -07:00
list-objects-filter-options.c Merge branch 'md/list-objects-filter-parse-msgfix' 2019-06-21 11:24:10 -07:00
list-objects-filter-options.h list-objects-filter: disable 'sparse:path' filters 2019-05-29 11:05:34 -07:00
list-objects-filter.c Merge branch 'md/list-objects-filter-memfix' 2019-06-21 11:24:09 -07:00
list-objects-filter.h list-objects-filter.c: remove implicit dependency on the_index 2018-11-12 14:50:05 +09:00
list-objects.c rev-list: detect broken root trees 2019-04-10 12:59:39 +09:00
list-objects.h list-objects: consume sparse tree walk 2019-01-17 13:44:39 -08:00
list.h
ll-merge.c Merge branch 'en/merge-path-collision' 2019-01-04 13:33:32 -08:00
ll-merge.h Merge branch 'en/merge-path-collision' 2019-01-04 13:33:32 -08:00
lockfile.c
lockfile.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
log-tree.c Merge branch 'wh/author-committer-ident-config' 2019-03-07 09:59:53 +09:00
log-tree.h
ls-refs.c upload-pack: strip namespace from symref data 2019-05-28 10:02:00 -07:00
ls-refs.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
mailinfo.c mailinfo: support format=flowed 2018-08-29 13:05:35 -07:00
mailinfo.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
mailmap.c
mailmap.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
Makefile repo-settings: consolidate some config settings 2019-08-13 13:33:54 -07:00
match-trees.c match-trees.c: remove the_repo from shift_tree*() 2019-06-27 12:45:17 -07:00
mem-pool.c block alloc: add validations around cache_entry lifecyle 2018-07-03 10:58:27 -07:00
mem-pool.h block alloc: add validations around cache_entry lifecyle 2018-07-03 10:58:27 -07:00
merge-blobs.c merge-blobs.c: remove implicit dependency on the_index 2018-09-21 09:48:10 -07:00
merge-blobs.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
merge-recursive.c Use the right 'struct repository' instead of the_repository 2019-06-27 12:45:17 -07:00
merge-recursive.h merge-recursive.c: remove implicit dependency on the_index 2019-01-14 12:13:04 -08:00
merge.c read-cache.c: kill read_index() 2019-01-14 12:13:04 -08:00
mergesort.c
mergesort.h
midx.c midx: implement midx_repack() 2019-06-11 10:34:40 -07:00
midx.h multi-pack-index: prepare 'repack' subcommand 2019-06-11 10:34:40 -07:00
name-hash.c cleanup: fix possible overflow errors in binary search, part 2 2019-06-13 11:28:53 -07:00
notes-cache.c notes-cache.c: remove the_repository references 2018-11-12 14:50:06 +09:00
notes-cache.h notes-cache.c: remove the_repository references 2018-11-12 14:50:06 +09:00
notes-merge.c notes-merge: switch to use the_hash_algo 2019-04-01 11:57:37 +09:00
notes-merge.h notes-merge.c: remove implicit dependency on the_index 2018-11-12 14:50:05 +09:00
notes-utils.c notes-utils.c: remove the_repository references 2019-01-14 12:13:04 -08:00
notes-utils.h notes-utils.c: remove the_repository references 2019-01-14 12:13:04 -08:00
notes.c tree-walk.c: remove the_repo from get_tree_entry() 2019-06-27 12:45:17 -07:00
notes.h notes: correct documentation of format_display_notes() 2019-05-07 19:08:10 +09:00
object-store.h Merge branch 'jk/check-connected-with-alternates' 2019-07-19 11:30:21 -07:00
object.c Merge branch 'jk/oidhash' 2019-07-09 15:25:43 -07:00
object.h commit-graph: fix writing first commit-graph during fetch 2019-10-25 11:19:16 +09:00
oidmap.c Merge branch 'cc/test-oidmap' 2019-07-19 11:30:19 -07:00
oidmap.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
oidset.c Merge branch 'br/blame-ignore' 2019-07-19 11:30:20 -07:00
oidset.h Merge branch 'br/blame-ignore' 2019-07-19 11:30:20 -07:00
pack-bitmap-write.c pack-bitmap: convert khash_sha1 maps into kh_oid_map 2019-06-20 10:35:05 -07:00
pack-bitmap.c pack-bitmap: convert khash_sha1 maps into kh_oid_map 2019-06-20 10:35:05 -07:00
pack-bitmap.h pack-bitmap: convert khash_sha1 maps into kh_oid_map 2019-06-20 10:35:05 -07:00
pack-check.c pack-check.c: remove the_repository references 2018-11-12 14:50:06 +09:00
pack-objects.c hashmap: convert sha1hash() to oidhash() 2019-06-20 10:44:22 -07:00
pack-objects.h pack-objects: convert packlist_find() to use object_id 2019-06-20 09:54:58 -07:00
pack-revindex.c pack-revindex: open index if necessary 2019-04-16 16:58:21 +09:00
pack-revindex.h pack-revindex: open index if necessary 2019-04-16 16:58:21 +09:00
pack-write.c convert "hashcmp() != 0" to "!hasheq()" 2018-08-29 11:32:49 -07:00
pack.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
packfile.c Merge branch 'ds/midx-expire-repack' 2019-07-19 11:30:19 -07:00
packfile.h Merge branch 'ds/midx-expire-repack' 2019-07-19 11:30:19 -07:00
pager.c pager: add a helper function to clear the last line in the terminal 2019-06-24 13:38:46 -07:00
parse-options-cb.c Merge branch 'nd/switch-and-restore' 2019-07-09 15:25:44 -07:00
parse-options.c Merge branch 'nd/diff-parseopt' 2019-05-30 10:50:44 -07:00
parse-options.h Merge branch 'nd/switch-and-restore' 2019-07-09 15:25:44 -07:00
patch-delta.c patch-delta: handle truncated copy parameters 2018-08-30 10:30:23 -07:00
patch-ids.c hashmap: convert sha1hash() to oidhash() 2019-06-20 10:44:22 -07:00
patch-ids.h format-patch: make --base patch-id output stable 2019-05-08 19:27:43 +09:00
path.c Merge branch 'nd/rewritten-ref-is-per-worktree' 2019-04-10 02:14:23 +09:00
path.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
pathspec.c Merge branch 'nd/the-index-final' 2019-02-06 22:05:23 -08:00
pathspec.h dir.c: move, rename and export match_attrs() 2018-11-19 10:50:33 +09:00
pkt-line.c pkt-line: drop 'const'-ness of a param to set_packet_header() 2019-05-16 13:29:06 +09:00
pkt-line.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
preload-index.c mark_fsmonitor_valid(): mark the index as changed if needed 2019-05-28 12:43:43 -07:00
pretty.c use COPY_ARRAY for copying arrays 2019-06-17 18:15:04 -07:00
pretty.h Merge branch 'sb/more-repo-in-api' 2019-02-05 14:26:09 -08:00
prio-queue.c prio-queue: add 'peek' operation 2018-11-02 12:14:21 +09:00
prio-queue.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
progress.c Merge branch 'dr/progress-i18n' 2019-07-11 15:16:49 -07:00
progress.h Merge branch 'sg/overlong-progress-fix' 2019-04-25 16:41:19 +09:00
prompt.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
prompt.h
protocol.c tests: define GIT_TEST_PROTOCOL_VERSION 2019-03-07 10:02:42 +09:00
protocol.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
quote.c Indent code with TABs 2018-12-09 12:37:32 +09:00
quote.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
range-diff.c format-patch: do not let its diff-options affect --range-diff 2018-11-30 13:47:55 +09:00
range-diff.h format-patch: do not let its diff-options affect --range-diff 2018-11-30 13:47:55 +09:00
reachable.c object: convert lookup_object() to use object_id 2019-06-20 10:18:09 -07:00
reachable.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
read-cache.c repo-settings: parse core.untrackedCache 2019-08-13 13:33:55 -07:00
README.md README: adjust for final Azure Pipeline ID 2019-02-23 21:27:04 -08:00
rebase-interactive.c rebase-interactive: rewrite edit_todo_list() to handle the initial edit 2019-03-07 09:17:57 +09:00
rebase-interactive.h rebase-interactive: rewrite edit_todo_list() to handle the initial edit 2019-03-07 09:17:57 +09:00
ref-filter.c Merge branch 'ma/ref-filter-leakfix' 2019-07-19 11:30:23 -07:00
ref-filter.h parse_opt_ref_sorting: always use with NONEG flag 2019-03-21 12:03:35 +09:00
reflog-walk.c Merge branch 'nd/i18n' 2018-08-15 15:08:23 -07:00
reflog-walk.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
refs.c object: convert lookup_unknown_object() to use object_id 2019-06-20 10:06:19 -07:00
refs.h Merge branch 'nd/worktree-name-sanitization' 2019-06-13 13:19:40 -07:00
refspec.c refspec: make hash size independent 2019-04-01 11:57:39 +09:00
refspec.h
RelNotes The first batch after 2.22 2019-06-13 13:23:03 -07:00
remote-curl.c i18n: fix typos found during l10n for git 2.22.0 2019-06-03 11:10:53 -07:00
remote-testsvn.c Merge branch 'sb/object-store-grafts' 2018-07-18 12:20:28 -07:00
remote.c Merge branch 'dr/ref-filter-push-track-fix' 2019-05-09 00:37:26 +09:00
remote.h Merge branch 'dl/no-extern-in-func-decl' 2019-05-13 23:50:32 +09:00
replace-object.c Merge branch 'ds/commit-graph-with-grafts' into maint 2018-11-21 22:57:47 +09:00
replace-object.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
repo-settings.c fetch: add fetch.writeCommitGraph config setting 2019-09-03 12:06:14 -07:00
repository.c Merge branch 'ma/clear-repository-format' 2019-03-20 15:16:07 +09:00
repository.h fetch: add fetch.writeCommitGraph config setting 2019-09-03 12:06:14 -07:00
rerere.c read-cache.c: kill read_index() 2019-01-14 12:13:04 -08:00
rerere.h rerere.c: remove the_repository references 2018-11-12 14:50:06 +09:00
resolve-undo.c resolve-undo.c: use the right index instead of the_index 2018-08-13 14:14:44 -07:00
resolve-undo.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
revision.c Merge branch 'jk/check-connected-with-alternates' 2019-07-19 11:30:21 -07:00
revision.h Merge branch 'en/combined-all-paths' 2019-03-07 09:59:54 +09:00
run-command.c trace2: create new combined trace facility 2019-02-22 15:27:59 -08:00
run-command.h *.[ch]: remove extern from function declarations using sed 2019-05-05 15:20:08 +09:00
send-pack.c Merge branch 'jk/loose-object-cache-oid' 2019-02-06 22:05:27 -08:00
send-pack.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
sequencer.c Merge branch 'nd/tree-walk-with-repo' 2019-07-19 11:30:21 -07:00
sequencer.h Merge branch 'ra/cherry-pick-revert-skip' 2019-07-19 11:30:21 -07:00
serve.c pack-protocol.txt: accept error packets in any context 2019-01-02 13:05:30 -08:00
serve.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
server-info.c Merge branch 'ew/server-info-remove-crufts' 2019-06-17 10:15:15 -07:00
setup.c sha1-name.c: remove the_repo from maybe_die_on_misspelt_object_name 2019-04-16 18:56:53 +09:00
sh-i18n--envsubst.c cleanup: fix possible overflow errors in binary search, part 2 2019-06-13 11:28:53 -07:00
sha1-array.c sha1-array: provide oid_array_filter 2018-12-05 11:42:31 +09:00
sha1-array.h sha1-array: provide oid_array_filter 2018-12-05 11:42:31 +09:00
sha1-file.c Merge branch 'jk/check-connected-with-alternates' 2019-07-19 11:30:21 -07:00
sha1-lookup.c
sha1-lookup.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
sha1-name.c Merge branch 'nd/tree-walk-with-repo' 2019-07-19 11:30:21 -07:00
sha1dc_git.c
sha1dc_git.h
shallow.c Use the right 'struct repository' instead of the_repository 2019-06-27 12:45:17 -07:00
shell.c
shortlog.h Add missing includes and forward declarations 2018-08-15 11:52:09 -07:00
sideband.c Merge branch 'jt/fetch-v2-sideband' 2019-02-05 14:26:11 -08:00
sideband.h {fetch,upload}-pack: sideband v2 fetch response 2019-01-17 11:25:07 -08:00
sigchain.c
sigchain.h
split-index.c Merge branch 'nd/split-index-null-base-fix' 2019-03-07 09:59:56 +09:00
split-index.h
strbuf.c l10n: localizable upload progress messages 2019-07-02 12:18:49 -07:00
strbuf.h l10n: localizable upload progress messages 2019-07-02 12:18:49 -07:00
streaming.c Merge branch 'jk/loose-object-cache-oid' 2019-02-06 22:05:27 -08:00
streaming.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
string-list.c style: the opening '{' of a function is in a separate line 2018-12-10 15:41:09 +09:00
string-list.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
sub-process.c trace2:data: add trace2 sub-process classification 2019-02-22 15:28:12 -08:00
sub-process.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
submodule-config.c submodule-config.c: use repo_get_oid for reading .gitmodules 2019-04-16 18:56:53 +09:00
submodule-config.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
submodule.c submodule: drop unused prefix parameter from some functions 2019-05-13 14:22:54 +09:00
submodule.h submodule: drop unused prefix parameter from some functions 2019-05-13 14:22:54 +09:00
symlinks.c Indent code with TABs 2018-12-09 12:37:32 +09:00
tag.c object: convert create_object() to use object_id 2019-06-20 10:20:51 -07:00
tag.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
tar.h
tempfile.c reopen_tempfile(): truncate opened file 2018-09-05 09:46:16 -07:00
tempfile.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
thread-utils.c thread-utils: macros to unconditionally compile pthreads API 2018-10-29 11:22:48 +09:00
thread-utils.h thread-utils: macros to unconditionally compile pthreads API 2018-10-29 11:22:48 +09:00
tmp-objdir.c
tmp-objdir.h
trace2.c Merge branch 'jh/trace2' 2019-05-13 23:50:35 +09:00
trace2.h trace2: rename environment variables to GIT_TRACE2* 2019-05-28 10:20:34 -07:00
trace.c trace.h: support nested performance tracing 2018-08-18 09:47:46 -07:00
trace.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
trailer.c pretty: add support for separator option in %(trailers) 2019-01-29 10:03:32 -08:00
trailer.h pretty: add support for separator option in %(trailers) 2019-01-29 10:03:32 -08:00
transport-helper.c Merge branch 'mh/import-transport-fd-fix' 2019-06-13 13:19:43 -07:00
transport-internal.h transport: list refs before fetch if necessary 2018-10-07 09:53:19 +09:00
transport.c object-store.h: move for_each_alternate_ref() from transport.h 2019-07-01 09:47:29 -07:00
transport.h object-store.h: move for_each_alternate_ref() from transport.h 2019-07-01 09:47:29 -07:00
tree-diff.c tree-walk.c: remove the_repo from fill_tree_descriptor() 2019-06-27 12:45:17 -07:00
tree-walk.c tree-walk.c: remove the_repo from get_tree_entry_follow_symlinks() 2019-06-27 12:45:17 -07:00
tree-walk.h tree-walk.c: remove the_repo from get_tree_entry_follow_symlinks() 2019-06-27 12:45:17 -07:00
tree.c object: convert create_object() to use object_id 2019-06-20 10:20:51 -07:00
tree.h tree.c: make read_tree*() take 'struct repository *' 2018-11-19 10:50:33 +09:00
unicode-width.h Merge branch 'bb/unicode-12.1-reiwa' 2019-06-17 10:15:18 -07:00
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c Merge branch 'nd/tree-walk-with-repo' 2019-07-19 11:30:21 -07:00
unpack-trees.h unpack-trees: rename "gently" flag to "quiet" 2019-03-24 21:35:34 +09:00
upload-pack.c Merge branch 'jk/oidhash' 2019-07-09 15:25:43 -07:00
upload-pack.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
url.c url: do not allow %00 to represent NUL in URLs 2019-06-04 14:48:25 -07:00
url.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
urlmatch.c
urlmatch.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
usage.c trace2: create new combined trace facility 2019-02-22 15:27:59 -08:00
userdiff.c Merge branch 'ml/userdiff-rust' 2019-06-21 11:24:08 -07:00
userdiff.h notes-cache.c: remove the_repository references 2018-11-12 14:50:06 +09:00
utf8.c utf8: handle systems that don't write BOM for UTF-16 2019-02-11 18:20:07 -08:00
utf8.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
varint.c
varint.h *.[ch]: remove extern from function declarations using spatch 2019-05-05 15:20:06 +09:00
version.c
version.h
versioncmp.c
walker.c object: convert lookup_unknown_object() to use object_id 2019-06-20 10:06:19 -07:00
walker.h
wildmatch.c wildmatch: change behavior of "foo**bar" in WM_PATHNAME mode 2018-10-29 13:19:22 +09:00
wildmatch.h wildmatch: change behavior of "foo**bar" in WM_PATHNAME mode 2018-10-29 13:19:22 +09:00
worktree.c Merge branch 'nd/corrupt-worktrees' 2019-06-13 13:19:41 -07:00
worktree.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
wrap-for-bin.sh
wrapper.c wrapper: avoid undefined behaviour in macOS 2019-06-19 07:41:31 -07:00
write-or-die.c
ws.c Merge branch 'nd/the-index' 2018-10-19 13:34:02 +09:00
wt-status.c Merge branch 'jl/status-reduce-vertical-blank' 2019-07-19 11:30:23 -07:00
wt-status.h Merge branch 'md/sort-detached-head-first' 2019-07-09 15:25:42 -07:00
xdiff-interface.c completion: add more parameter value completion 2019-02-20 12:31:56 -08:00
xdiff-interface.h *.[ch]: manually align parameter lists 2019-05-05 15:20:10 +09:00
zlib.c

README.md

Build Status

Git - fast, scalable, distributed revision control system

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.

Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.

See Documentation/gittutorial.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-.txt for documentation of each command. If git has been correctly installed, then the tutorial can also be read with man gittutorial or git help tutorial, and the documentation of each command with man git-<commandname> or git help <commandname>.

CVS users may also want to read Documentation/gitcvs-migration.txt (man gitcvs-migration or git help cvs-migration if git is installed).

The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission). To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at https://public-inbox.org/git/, http://marc.info/?l=git and other archival sites.

Issues which are security relevant should be disclosed privately to the Git Security mailing list git-security@googlegroups.com.

The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.

The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):

  • random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
  • stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
  • "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
  • "goddamn idiotic truckload of sh*t": when it breaks