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Dennis Kaarsemaker aecad374ae reflog-walk: don't segfault on non-commit sha1's in the reflog
git reflog (ab)uses the log machinery to display its list of log
entries. To do so it must fake commit parent information for the log
walker.

For refs in refs/heads this is no problem, as they should only ever
point to commits. Tags and other refs however can point to anything,
thus their reflog may contain non-commit objects.

To avoid segfaulting, we check whether reflog entries are commits before
feeding them to the log walker and skip any non-commits. This means that
git reflog output will be incomplete for such refs, but that's one step
up from segfaulting. A more complete solution would be to decouple git
reflog from the log walker machinery.

Signed-off-by: Dennis Kaarsemaker <dennis@kaarsemaker.net>
Helped-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-05 13:41:06 -08:00
block-sha1 sha1: provide another level of indirection for the SHA-1 functions 2015-11-05 10:35:11 -08:00
builtin Merge branch 'rs/show-branch-argv-array' into maint 2015-12-11 11:14:14 -08:00
compat Merge branch 'ad/sha1-update-chunked' into maint 2015-12-08 14:05:03 -08:00
contrib Merge branch 'as/subtree-with-spaces' into maint 2015-12-11 11:14:11 -08:00
Documentation Update draft release notes to 2.6.5 2015-12-15 09:44:54 -08:00
ewah
git-gui
gitk-git Merge git://ozlabs.org/~paulus/gitk 2015-09-14 11:50:21 -07:00
gitweb
mergetools
perl
po l10n: ru.po: update Russian translation 2015-09-30 18:01:23 +03:00
ppc sha1: provide another level of indirection for the SHA-1 functions 2015-11-05 10:35:11 -08:00
t reflog-walk: don't segfault on non-commit sha1's in the reflog 2016-01-05 13:41:06 -08:00
templates
vcs-svn
xdiff
.gitattributes
.gitignore Merge branch 'hv/submodule-config' 2015-08-31 15:38:52 -07:00
.mailmap mailmap: update my entry with new email address 2015-09-16 09:08:48 -07:00
abspath.c
aclocal.m4
advice.c merge: grammofix in please-commit-before-merge message 2015-10-02 14:29:56 -07:00
advice.h
alias.c config: silence warnings for command names with invalid keys 2015-08-24 08:52:23 -07:00
alloc.c
archive-tar.c
archive-zip.c Merge branch 'rs/archive-zip-many' into maint 2015-09-03 19:18:01 -07:00
archive.c Merge branch 'jk/date-mode-format' 2015-08-03 11:01:27 -07:00
archive.h
argv-array.c
argv-array.h
attr.c memoize common git-path "constant" files 2015-08-10 15:37:14 -07:00
attr.h
base85.c
bisect.c Merge branch 'dt/refs-pseudo' 2015-08-25 14:57:08 -07:00
bisect.h bisect: simplify the addition of new bisect terms 2015-08-03 11:42:41 -07:00
blob.c
blob.h
branch.c Merge branch 'dt/notes-multiple' 2015-08-25 14:57:08 -07:00
branch.h worktrees: add find_shared_symref 2015-08-11 13:48:15 -07:00
builtin.h builtin-am: implement skeletal builtin am 2015-08-04 22:02:11 -07:00
bulk-checkin.c
bulk-checkin.h
bundle.c create_bundle(): duplicate file descriptor to avoid closing it twice 2015-08-10 12:57:14 -07:00
bundle.h
cache-tree.c cache-tree: introduce write_index_as_tree() 2015-08-04 22:02:11 -07:00
cache-tree.h cache-tree: introduce write_index_as_tree() 2015-08-04 22:02:11 -07:00
cache.h Merge branch 'ad/sha1-update-chunked' into maint 2015-12-08 14:05:03 -08:00
check-builtins.sh
check-racy.c
check_bindir
color.c
color.h
column.c
column.h
combine-diff.c Sync with 2.4.10 2015-09-28 15:33:56 -07:00
command-list.txt
commit-slab.h Merge branch 'jc/commit-slab' 2015-08-03 11:01:21 -07:00
commit.c Merge branch 'rs/pop-commit' into maint 2015-12-11 11:14:13 -08:00
commit.h Merge branch 'jk/date-mode-format' 2015-08-03 11:01:27 -07:00
config.c Make error message after failing commit_lock_file() less confusing 2015-12-01 18:17:23 -05:00
config.mak.in
config.mak.uname
configure.ac Merge branch 'rc/configure-use-libs-when-checking-a-lib' into maint 2015-12-01 17:19:06 -05:00
connect.c Merge branch 'tk/typofix-connect-unknown-proto-error' into maint 2015-10-16 14:32:55 -07:00
connect.h
connected.c
connected.h
convert.c
convert.h
copy.c
COPYING
credential-cache--daemon.c credential-cache--daemon: use tempfile module 2015-08-12 14:50:11 -07:00
credential-cache.c am, credential-cache: add angle brackets to usage string 2015-10-16 10:43:41 -07:00
credential-store.c credential-store: don't pass strerror to die_errno() 2015-12-16 10:27:12 -08:00
credential.c
credential.h
csum-file.c
csum-file.h
ctype.c
daemon.c Merge branch 'rs/daemon-plug-child-leak' into maint 2015-11-05 12:18:17 -08:00
date.c
decorate.c
decorate.h
delta.h
diff-delta.c
diff-lib.c
diff-no-index.c
diff.c Sync with v2.5.4 2015-09-28 19:16:54 -07:00
diff.h
diffcore-break.c
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c react to errors in xdi_diff 2015-09-28 14:57:10 -07:00
diffcore-rename.c
diffcore.h
dir.c Merge branch 'dt/name-hash-dir-entry-fix' into maint 2015-11-03 15:32:40 -08:00
dir.h
editor.c
entry.c
environment.c Merge branch 'jk/repository-extension' into maint 2015-11-03 15:32:25 -08:00
exec_cmd.c
exec_cmd.h
fast-import.c Make error message after failing commit_lock_file() less confusing 2015-12-01 18:17:23 -05:00
fetch-pack.c memoize common git-path "constant" files 2015-08-10 15:37:14 -07:00
fetch-pack.h
fmt-merge-msg.h
fsck.c Merge branch 'js/fsck-opt' 2015-08-03 11:01:18 -07:00
fsck.h
generate-cmdlist.sh generate-cmdlist: re-implement as shell script 2015-08-25 11:24:31 -07:00
gettext.c
gettext.h
git-add--interactive.perl
git-archimport.perl
git-bisect.sh bisect: don't mix option parsing and non-trivial code 2015-08-03 11:42:42 -07:00
git-compat-util.h Merge branch 'js/misc-fixes' into maint 2015-11-05 12:18:13 -08:00
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl
git-difftool--helper.sh
git-difftool.perl difftool: ignore symbolic links in use_wt_file 2015-10-29 13:43:10 -07:00
git-filter-branch.sh filter-branch: deal with object name vs. pathname ambiguity in tree-filter 2015-11-24 18:37:50 -05:00
git-instaweb.sh
git-merge-octopus.sh
git-merge-one-file.sh merge: detect delete/modechange conflict 2015-10-26 14:49:31 -07:00
git-merge-resolve.sh
git-mergetool--lib.sh
git-mergetool.sh
git-p4.py Merge branch 'ls/p4-keep-empty-commits' into maint 2015-12-15 09:34:19 -08:00
git-parse-remote.sh
git-quiltimport.sh
git-rebase--am.sh
git-rebase--interactive.sh rebase-i-exec: Allow space in SHELL_PATH 2015-11-13 17:51:39 -05:00
git-rebase--merge.sh
git-rebase.sh Merge branch 'jk/rebase-no-autostash' into maint 2015-12-08 14:05:01 -08:00
git-relink.perl
git-remote-testgit.sh
git-request-pull.sh
git-send-email.perl Merge branch 'sa/send-email-smtp-batch-data-limit' into maint 2015-11-05 12:18:06 -08:00
git-sh-i18n.sh
git-sh-setup.sh
git-stash.sh
git-submodule.sh Sync with 2.4.10 2015-09-28 15:33:56 -07:00
git-svn.perl git-svn: parse authors file more leniently 2015-09-10 17:59:38 +00:00
GIT-VERSION-GEN Git 2.6.4 2015-12-08 14:12:45 -08:00
git-web--browse.sh
git.c interpret-trailers: allow running outside a repository 2015-09-08 11:16:47 -07:00
git.rc
git.spec.in
gpg-interface.c
gpg-interface.h
graph.c
graph.h
grep.c
grep.h
hashmap.c
hashmap.h
help.c
help.h
hex.c
http-backend.c prefer git_pathdup to git_path in some possibly-dangerous cases 2015-08-10 15:37:12 -07:00
http-fetch.c
http-push.c
http-walker.c
http.c Merge branch 'cb/ssl-config-pathnames' into maint 2015-12-01 17:21:01 -05:00
http.h
ident.c ident: fix undefined variable when NO_IPV6 is set 2015-12-14 13:06:00 -08:00
imap-send.c imap-send: only use CURLOPT_LOGIN_OPTIONS if it is actually available 2015-10-26 13:10:30 -07:00
INSTALL
khash.h
kwset.c
kwset.h
levenshtein.c
levenshtein.h
LGPL-2.1
line-log.c Sync with 2.3.10 2015-09-28 15:28:31 -07:00
line-log.h
line-range.c
line-range.h
list-objects.c
list-objects.h
ll-merge.c Sync with 2.4.10 2015-09-28 15:33:56 -07:00
ll-merge.h
lockfile.c lockfile: remove function "hold_lock_file_for_append" 2015-08-28 11:32:01 -07:00
lockfile.h lockfile: remove function "hold_lock_file_for_append" 2015-08-28 11:32:01 -07:00
log-tree.c Merge branch 'jk/date-mode-format' 2015-08-03 11:01:27 -07:00
log-tree.h
mailmap.c
mailmap.h
Makefile Merge branch 'ad/sha1-update-chunked' into maint 2015-12-08 14:05:03 -08:00
match-trees.c
merge-blobs.c
merge-blobs.h
merge-recursive.c Merge branch 'jk/delete-modechange-conflict' into maint 2015-11-05 12:18:11 -08:00
merge-recursive.h
merge.c
mergesort.c
mergesort.h
name-hash.c name-hash: don't reuse cache_entry in dir_entry 2015-10-21 12:47:38 -07:00
notes-cache.c
notes-cache.h
notes-merge.c prefer git_pathdup to git_path in some possibly-dangerous cases 2015-08-10 15:37:12 -07:00
notes-merge.h notes: extract enum notes_merge_strategy to notes-utils.h 2015-08-17 15:36:23 -07:00
notes-utils.c notes: extract parse_notes_merge_strategy to notes-utils 2015-08-17 15:38:32 -07:00
notes-utils.h notes: extract parse_notes_merge_strategy to notes-utils 2015-08-17 15:38:32 -07:00
notes.c Sync with 2.4.9 2015-09-04 10:43:23 -07:00
notes.h
object.c
object.h
pack-bitmap-write.c
pack-bitmap.c
pack-bitmap.h
pack-check.c verify_pack: do not ignore return value of verification function 2015-12-01 18:19:35 -05:00
pack-objects.c
pack-objects.h
pack-revindex.c Silence GCC's "cast of pointer to integer of a different size" warning 2015-10-26 13:24:03 -07:00
pack-revindex.h
pack-write.c
pack.h
pager.c Merge branch 'ti/glibc-stdio-mutex-from-signal-handler' into maint 2015-10-16 14:32:41 -07:00
parse-options-cb.c
parse-options.c
parse-options.h Merge branch 'sb/parse-options-codeformat' 2015-08-12 14:09:57 -07:00
patch-delta.c
patch-ids.c
patch-ids.h
path.c Merge branch 'dk/gc-idx-wo-pack' into maint 2015-12-04 11:33:08 -08:00
pathspec.c
pathspec.h
pkt-line.c
pkt-line.h
preload-index.c
pretty.c
prio-queue.c
prio-queue.h
progress.c
progress.h
prompt.c
prompt.h
quote.c quote: move comment before sq_quote_buf() 2015-10-07 15:12:01 -07:00
quote.h
reachable.c Merge branch 'js/gc-with-stale-symref' into maint 2015-10-20 15:22:42 -07:00
reachable.h
read-cache.c Merge branch 'dt/name-hash-dir-entry-fix' into maint 2015-11-03 15:32:40 -08:00
README
ref-filter.c Merge branch 'jk/date-mode-format' 2015-08-03 11:01:27 -07:00
ref-filter.h ref-filter: make 'ref_array_item' use a FLEX_ARRAY for refname 2015-08-03 10:24:07 -07:00
reflog-walk.c reflog-walk: don't segfault on non-commit sha1's in the reflog 2016-01-05 13:41:06 -08:00
reflog-walk.h
refs.c Make error message after failing commit_lock_file() less confusing 2015-12-01 18:17:23 -05:00
refs.h Merge branch 'dt/refs-pseudo' 2015-08-25 14:57:08 -07:00
RelNotes Prepare for 2.6.5 2015-12-11 11:17:47 -08:00
remote-curl.c push: support signing pushes iff the server supports it 2015-08-19 12:58:45 -07:00
remote-testsvn.c
remote.c use pop_commit() for consuming the first entry of a struct commit_list 2015-10-26 14:06:46 -07:00
remote.h
replace_object.c
rerere.c rerere: release lockfile in non-writing functions 2015-09-01 15:52:54 -07:00
rerere.h rerere: release lockfile in non-writing functions 2015-09-01 15:52:54 -07:00
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'sn/null-pointer-arith-in-mark-tree-uninteresting' into maint 2015-12-11 11:14:38 -08:00
revision.h
run-command.c Merge branch 'rs/daemon-plug-child-leak' into maint 2015-11-05 12:18:17 -08:00
run-command.h Merge branch 'rs/daemon-plug-child-leak' into maint 2015-11-05 12:18:17 -08:00
send-pack.c Merge branch 'db/push-sign-if-asked' 2015-08-31 15:39:08 -07:00
send-pack.h push: support signing pushes iff the server supports it 2015-08-19 12:58:45 -07:00
sequencer.c Merge branch 'dt/refs-pseudo' 2015-08-25 14:57:08 -07:00
sequencer.h
server-info.c
setup.c Merge branch 'mk/submodule-gitdir-path' into maint 2015-11-03 15:32:35 -08:00
sh-i18n--envsubst.c
sha1-array.c
sha1-array.h
sha1-lookup.c
sha1-lookup.h
sha1_file.c Merge branch 'jk/prune-mtime' into maint 2015-12-15 09:27:12 -08:00
sha1_name.c
shallow.c Merge branch 'rs/pop-commit' into maint 2015-12-11 11:14:13 -08:00
shell.c
shortlog.h
show-index.c usage: do not insist that standard input must come from a file 2015-10-16 15:27:52 -07:00
sideband.c
sideband.h
sigchain.c
sigchain.h
split-index.c
split-index.h
strbuf.c strbuf: make stripspace() part of strbuf 2015-10-16 09:45:15 -07:00
strbuf.h strbuf: make stripspace() part of strbuf 2015-10-16 09:45:15 -07:00
streaming.c
streaming.h
string-list.c
string-list.h
submodule-config.c submodule: allow erroneous values for the fetchRecurseSubmodules option 2015-08-19 11:43:10 -07:00
submodule-config.h submodule: allow erroneous values for the fetchRecurseSubmodules option 2015-08-19 11:43:10 -07:00
submodule.c Merge branch 'jk/initialization-fix-to-add-submodule-odb' into maint 2015-11-05 12:18:14 -08:00
submodule.h submodule: allow erroneous values for the fetchRecurseSubmodules option 2015-08-19 11:43:10 -07:00
symlinks.c
tag.c
tag.h
tar.h
tempfile.c register_tempfile(): new function to handle an existing temporary file 2015-08-10 12:57:14 -07:00
tempfile.h register_tempfile(): new function to handle an existing temporary file 2015-08-10 12:57:14 -07:00
test-chmtime.c
test-config.c
test-ctype.c
test-date.c
test-delta.c
test-dump-cache-tree.c
test-dump-split-index.c commit: don't rewrite shared index unnecessarily 2015-08-31 08:41:07 -07:00
test-dump-untracked-cache.c
test-genrandom.c
test-hashmap.c
test-index-version.c
test-line-buffer.c
test-match-trees.c
test-mergesort.c
test-mktemp.c
test-parse-options.c
test-path-utils.c test-path-utils.c: remove incorrect assumption 2015-10-08 18:03:50 -07:00
test-prio-queue.c
test-read-cache.c
test-regex.c
test-revision-walking.c
test-run-command.c
test-scrap-cache-tree.c
test-sha1-array.c
test-sha1.c
test-sha1.sh
test-sigchain.c
test-string-list.c
test-submodule-config.c submodule: use new config API for worktree configurations 2015-08-19 11:43:10 -07:00
test-subprocess.c
test-svn-fe.c
test-urlmatch-normalization.c
test-wildmatch.c
thread-utils.c
thread-utils.h
trace.c
trace.h
trailer.c Merge branch 'cc/trailers-corner-case-fix' into maint 2015-09-03 19:18:03 -07:00
trailer.h
transport-helper.c Sync with v2.5.4 2015-09-28 19:16:54 -07:00
transport.c allow hooks to ignore their standard input stream 2015-11-16 08:59:19 -05:00
transport.h Sync with v2.5.4 2015-09-28 19:16:54 -07:00
tree-diff.c
tree-walk.c
tree-walk.h
tree.c
tree.h
unicode_width.h
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c Sync with 2.5.2 2015-09-09 14:30:35 -07:00
unpack-trees.h
update_unicode.sh
upload-pack.c use pop_commit() for consuming the first entry of a struct commit_list 2015-10-26 14:06:46 -07:00
url.c
url.h
urlmatch.c
urlmatch.h
usage.c vreportf: avoid intermediate buffer 2015-08-11 14:29:36 -07:00
userdiff.c
userdiff.h
utf8.c
utf8.h
varint.c
varint.h
version.c
version.h
versioncmp.c
walker.c
walker.h
wildmatch.c
wildmatch.h
wrap-for-bin.sh
wrapper.c write_file_v(): do not leave incomplete line at the end 2015-08-25 12:48:39 -07:00
write_or_die.c
ws.c
wt-status.c wt-status: correct and simplify check for detached HEAD 2015-11-28 12:30:18 -05:00
wt-status.h wt-status: move #include "pathspec.h" to the header 2015-08-21 14:49:27 -07:00
xdiff-interface.c xdiff: reject files larger than ~1GB 2015-09-28 14:57:23 -07:00
xdiff-interface.h xdiff: reject files larger than ~1GB 2015-09-28 14:57:23 -07:00
zlib.c

////////////////////////////////////////////////////////////////

	Git - the stupid content tracker

////////////////////////////////////////////////////////////////

"git" can mean anything, 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

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.

See Documentation/gittutorial.txt to get started, then see
Documentation/giteveryday.txt for a useful minimum set of commands, and
Documentation/git-commandname.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).

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

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 http://news.gmane.org/gmane.comp.version-control.git/,
http://marc.info/?l=git and other archival sites.

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.