Commit 2cc5b0facf (git-gui: extract script to generate "tclIndex",
2025-03-11) converted commands in a Makefile rule to a shell script.
In this process, the Makefile variable $@ had to be replaced by the
file name that it represents, 'lib/tclIndex'. However, the occurrence
in `rm -f $@` was missed. In a shell script, $@ expands to all
command line arguments, which happen to be the source files lib/*.tcl
in this case. Needless to say that we do not want to remove source
files during a build. Replace $@ by the intended 'lib/tclIndex'.
Reported-by: Randall S. Becker <rsbecker@nexbridge.com>
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
In the GitHub workflow used in Git's CI builds, the `vs test` jobs use a
subset of a specific revision of Git for Windows' SDK to run Git's test
suite. This revision is validated by another CI workflow to ensure that
said revision _can_ run Git's test suite successfully, skipping buggy
updates in Git for Windows' SDK.
The `win+Meson test` jobs do things differently, quite differently. They
use the Bash of the Git for Windows version that is installed on the
runners to run Git's test suite.
This difference has consequences.
When 68cb0b5253 (builtin/receive-pack: add option to skip connectivity
check, 2025-05-20) introduced a test case that uses `tee <file> | git
receive-pack` as `--receive-pack` parameter (imitating an existing
pattern in the same test script), it hit just the sweet spot to trigger
a bug in the MSYS2 runtime shipped in Git for Windows v2.49.0. This
version is the one currently installed on GitHub's runners.
The problem is that the `git receive-pack` process finishes while the
`tee` process does not need to write anything anymore and therefore does
not receive an EOF. Instead, it should receive a SIGPIPE, but the bug in
the MSYS2 runtime prevents that from working as intended. As a
consequence, the `tee` process waits for more input from the `git.exe
send-pack` process but none is coming, and the test script patiently
waits until the 6h timeout hits.
Only every once in a while, the `git receive-pack` process manages to
send an EOF to the `tee` process and no hang occurs. Therefore, the
problem can be worked around by cancelling the clearly-hanging job after
twenty or so minutes and re-running it, repeating the process about half
a dozen times, until the hang was successfully avoided.
This bug in the MSYS2 runtime has been fixed in the meantime, which is
the reason why the same test case causes no problems in the `win test`
and the `vs test` jobs.
This will continue to be the case until the Git for Windows version on
the GitHub runners is upgraded to a version that distributes a newer
MSYS2 runtime version. However, as of time of writing, this _is_ the
latest Git for Windows version, and will be for another 1.5 weeks, until
Git v2.50.0 is scheduled to appear (and shortly thereafter Git for
Windows v2.50.0). Traditionally it takes a while before the runners pick
up the new version.
We could just wait it out, six hours at a time.
Here, I opt for an alternative: Detect the buggy MSYS2 runtime and
simply skip the test case. It's not like the `receive-pack` test cases
are specific to Windows, and even then, to my chagrin the CI runs in
git-for-windows/git spend around ten hours of compute time each and
every time to run the entire test suite on all the platforms, even the
tests that cover cross-platform code, and for Windows alone we do that
three times: with GCC, with MSVC, and with MSVC via Meson. Therefore, I
deem it more than acceptable to skip this test case in one of those
matrices.
For good luck, also the preceding test case is skipped in that scenario,
as it uses the same `--receive-pack=tee <file> | git receive-pack`
pattern, even though I never observed that test case to hang in
practice.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git verify-refs" (and hence "git fsck --reference") started
erroring out in a repository in which secondary worktrees were
prepared with Git 2.43 or lower.
* sj/ref-contents-check-fix:
fsck: ignore missing "refs" directory for linked worktrees
The OpenBSD 'sed' command does not support '\n' to represent newlines in
sed expressions. This leads to the follow compiler error:
In file included from builtin/help.c:15:
./config-list.h:282:18: error: use of undeclared identifier 'n'
"gitcvs.dbUser",n "gitcvs.dbPass",
^
1 error generated.
gmake: *** [Makefile:2821: builtin/help.o] Error 1
We can fix this by documenting related configuration variables
one-per-line instead of listing them separated by commas. This allows us
to remove the unportable part of the sed expression in
generate-configlist.sh.
Signed-off-by: Collin Funk <collin.funk1@gmail.com>
Reviewed-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git refs verify" doesn't work if there are worktrees created on Git
v2.43.0 or older versions. These versions don't automatically create the
"refs" directory, causing the error:
error: cannot open directory .git/worktrees/<worktree name>/refs:
No such file or directory
Since 8f4c00de95 (builtin/worktree: create refdb via ref backend,
2024-01-08), we automatically create the "refs" directory for new
worktrees. And in 7c78d819e6 (ref: support multiple worktrees check for
refs, 2024-11-20), we assume that all linked worktrees have this
directory and would wrongly report an error to the user, thus
introducing compatibility issue.
Check for ENOENT errno before reporting directory access errors for
linked worktrees to maintain backward compatibility.
Reported-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: shejialuo <shejialuo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Mark a new feature added during this cycle as experimental and fix
its default so that existing users of the fast-export command is
not broken.
* jc/signed-fast-export-is-experimental:
fast-export: --signed-commits is experimental
Doc mark-up fixes.
* ja/doc-synopsis-style:
doc: convert git-switch manpage to new synopsis style
doc: convert git-mergetool options to new synopsis style
doc: convert git-mergetool manpage to new synopsis style
doc: switch merge config description to new synopsis format
doc: convert merge strategies to synopsis format
doc: merge-options.adoc remove a misleading double negation
doc: convert merge options to new synopsis format
doc: convert git-merge manpage to new style
doc: convert git-checkout manpage to new style
OpenBSD requires DIR_HAS_BSD_GROUP_SEMANTICS.
OpenBSD has never had the BSD sysctl KERN_PROC_PATHNAME nor
does it support or use the /proc filesystem.
OpenBSD has had strcasestr() since 3.8. OpenBSD has had memmem()
since 5.4.
Signed-off-by: Brad Smith <brad@comstyle.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
OpenBSD / NetBSD use HW_PHYSMEM64 to detect the amount of physical
memory in a system. HW_PHYSMEM will not provide the correct amount
on a system with >=4GB of memory.
Signed-off-by: Brad Smith <brad@comstyle.com>
Reviewed-by: Collin Funk <collin.funk1@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
227c4f33a0 (doc: add a blank line around block delimiters,
2025-03-09) added blank lines around block delimiters as a
defensive measure. For each block you had to mind the con-
text (like the commit says):
• Top-level: just add blank lines
• Block: use list continuation (+)
But list continuation was used here at the top level, which
results in literal `+` in the output formats.
Acked-by: Jean-Noël Avila <jn.avila@free.fr>
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
OpenBSD / NetBSD use HW_NCPUONLINE to detect the online CPU
count. OpenBSD ships with SMT disabled on X86 systems so
HW_NCPU would provide double the number of CPUs as opposed
to the proper online count.
Signed-off-by: Brad Smith <brad@comstyle.com>
Reviewed-by: Collin Funk <collin.funk1@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When a stale .midx file refers to .pack files that no longer exist,
we ended up checking for these non-existent files repeatedly, which
has been optimized by memoizing the non-existence.
* ps/midx-negative-packfile-cache:
midx: stop repeatedly looking up nonexistent packfiles
packfile: explain ordering of how we look up auxiliary pack files
"git notes --help" documentation updates.
* kh/notes-doc-fixes:
doc: notes: use stuck form throughout
doc: notes: treat --stdin equally between copy/remove
doc: notes: point out copy --stdin use with argv
doc: notes: clearly state that --stripspace is the default
doc: notes: remove stripspace discussion from other options
doc: notes: rework --[no-]stripspace
doc: notes: split out options with negated forms
doc: config: mention core.commentChar on commit.cleanup
doc: stripspace: mention where the default comes from
"git apply --index/--cached" when applying a deletion patch in
reverse failed to give the mode bits of the path "removed" by the
patch to the file it creates, which has been corrected.
* mm/apply-reverse-mode-of-deleted-path:
apply: set file mode when --reverse creates a deleted file
t4129: test that git apply warns for unexpected mode changes
Recent versions of Perl started warning against "! A =~ /pattern/"
which does not negate the result of the matching. As it turns out
that the problematic function is not even called, it was removed.
* op/cvsserver-perl-warning:
cvsserver: remove unused escapeRefName function
Avoid adding directory path to a sparse-index tree entries to the
name-hash, since they would bloat the hashtable without anybody
querying for them. This was done already for a single threaded
part of the code, but now the multi-threaded code also does the
same.
* am/sparse-index-name-hash-fix:
name-hash: don't add sparse directories in threaded lazy init
Integer overflow fix around code paths for "git multi-pack-index repack"..
* pw/midx-repack-overflow-fix:
midx docs: clarify tie breaking
midx: avoid negative array index
midx repack: avoid potential integer overflow on 64 bit systems
midx repack: avoid integer overflow on 32 bit systems
Since f93b2a0424 (reftable/basics: introduce `REFTABLE_UNUSED`
annotation, 2025-02-18), the reftable library was migrated to
use an internal version of `UNUSED`, which unconditionally sets
a GNU __attribute__ to avoid warnings function parameters that
are not being used.
Make the definition conditional to prevent breaking the build
with non GNU compilers.
Reported-by: "Randall S. Becker" <rsbecker@nexbridge.com>
Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* 'master' of https://github.com/j6t/git-gui:
git-gui: wire up support for the Meson build system
git-gui: stop including GIT-VERSION-FILE file
git-gui: extract script to generate macOS app
git-gui: extract script to generate macOS wrapper
git-gui: extract script to generate "tclIndex"
git-gui: extract script to generate "git-gui"
git-gui: drop no-op GITGUI_SCRIPT replacement
git-gui: make output of GIT-VERSION-GEN source'able
git-gui: prepare GIT-VERSION-GEN for out-of-tree builds
git-gui: replace GIT-GUI-VARS with GIT-GUI-BUILD-OPTIONS
* 'master' of https://github.com/j6t/gitk:
gitk: do not hard-code color of search results in commit list
gitk: place file name arguments after options in msgfmt call
gitk: Legacy widgets doesn't have combobox
* 'pks-meson-support' of github.com:pks-t/git-gui:
git-gui: wire up support for the Meson build system
git-gui: stop including GIT-VERSION-FILE file
git-gui: extract script to generate macOS app
git-gui: extract script to generate macOS wrapper
git-gui: extract script to generate "tclIndex"
git-gui: extract script to generate "git-gui"
git-gui: drop no-op GITGUI_SCRIPT replacement
git-gui: make output of GIT-VERSION-GEN source'able
git-gui: prepare GIT-VERSION-GEN for out-of-tree builds
git-gui: replace GIT-GUI-VARS with GIT-GUI-BUILD-OPTIONS
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
As the design of signature handling is still being discussed, it is
likely that the data stream produced by the code in Git 2.50 would
have to be changed in such a way that is not backward compatible.
Mark the feature as experimental and discourge its use for now.
Also flip the default on the generation side to "strip"; users of
existing versions would not have passed --signed-commits=strip and
will be broken by this change if the default is made to abort, and
will be encouraged by the error message to produce data stream with
future breakage guarantees by passing --signed-commits option.
As we tone down the default behaviour, we no longer need the
FAST_EXPORT_SIGNED_COMMITS_NOABORT environment variable, which was
not discoverable enough.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git receive-pack" optionally learns not to care about connectivity
check, which can be useful when the repository arranges to ensure
connectivity by some other means.
* jt/receive-pack-skip-connectivity-check:
builtin/receive-pack: add option to skip connectivity check
t5410: test receive-pack connectivity check
Remove the leftover hints to the test framework to mark tests that
do not pass the leak checker tests, as they should no longer be
needed.
* kn/passing-leak-tests:
t: remove unexpected SANITIZE_LEAK variables
The multi-pack index acts as a cache across a set of packfiles so that
we can quickly look up which of those packfiles contains a given object.
As such, the multi-pack index naturally needs to be updated every time
one of the packfiles goes away, or otherwise the multi-pack index has
grown stale.
A stale multi-pack index should be handled gracefully by Git though, and
in fact it is: if the indexed pack cannot be found we simply ignore it
and eventually we fall back to doing the object lookup by just iterating
through all packs, even if those aren't indexed.
But while this fallback works, it has one significant downside: we don't
cache the fact that a pack has vanished. This leads to us repeatedly
trying to look up the same pack only to realize that it (still) doesn't
exist.
This issue can be easily demonstrated by creating a repository with a
stale multi-pack index and a couple of objects. We do so by creating a
repository with two packfiles, both of which are indexed by the
multi-pack index, and then repack those two packfiles. Note that we have
to move the multi-pack-index before doing the final repack, as Git knows
to delete it otherwise.
$ git init repo
$ cd repo/
$ git config set maintenance.auto false
$ for i in $(seq 1000); do printf "%d-original" $i >file-$i; done
$ git add .
$ git commit -moriginal
$ git repack -dl
$ for i in $(seq 1000); do printf "%d-modified" $i >file-$i; done
$ git commit -a -mmodified
$ git repack -dl
$ git multi-pack-index write
$ mv .git/objects/pack/multi-pack-index .
$ git repack -Adl
$ mv multi-pack-index .git/objects/pack/
Commands that cause a lot of objects lookups will now repeatedly invoke
`add_packed_git()`, which leads to three failed access(3p) calls as well
as one failed stat(3p) call. The following strace for example is done
for `git log --patch` in the above repository:
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
74.67 0.024693 1 18038 18031 access
25.33 0.008378 1 6045 6017 newfstatat
------ ----------- ----------- --------- --------- ----------------
100.00 0.033071 1 24083 24048 total
Fix the issue by introducing a negative lookup cache for indexed packs.
This cache works by simply storing an invalid pointer for a missing pack
when `prepare_midx_pack()` fails to look up the pack. Most users of the
`packs` array don't need to be adjusted, either, as they all know to
call `prepare_midx_pack()` before accessing the array.
With this change in place we can now see a significantly reduced number
of syscalls:
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
73.58 0.000323 5 60 28 newfstatat
26.42 0.000116 5 23 16 access
------ ----------- ----------- --------- --------- ----------------
100.00 0.000439 5 83 44 total
Furthermore, this change also results in a speedup:
Benchmark 1: git log --patch (revision = HEAD~)
Time (mean ± σ): 50.4 ms ± 2.5 ms [User: 22.0 ms, System: 24.4 ms]
Range (min … max): 45.4 ms … 54.9 ms 53 runs
Benchmark 2: git log --patch (revision = HEAD)
Time (mean ± σ): 12.7 ms ± 0.4 ms [User: 11.1 ms, System: 1.6 ms]
Range (min … max): 12.4 ms … 15.0 ms 191 runs
Summary
git log --patch (revision = HEAD) ran
3.96 ± 0.22 times faster than git log --patch (revision = HEAD~)
In the end, it should in theory never be necessary to have this negative
lookup cache given that we know to update the multi-pack index together
with repacks. But as the change is quite contained and as the speedup
can be significant as demonstrated above, it does feel sensible to have
the negative lookup cache regardless.
Based-on-patch-by: Jeff King <peff@peff.net>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When adding a packfile to an object database we perform four syscalls:
- Three calls to access(3p) are done to check for auxiliary data
structures.
- One call to stat(3p) is done to check for the ".pack" itself.
One curious bit is that we perform the access(3p) calls before checking
for the packfile itself, but if the packfile doesn't exist we discard
all results. The access(3p) calls are thus essentially wasted, so one
may be triggered to reorder those calls so that we can short-circuit the
other syscalls in case the packfile does not exist.
The order in which we look up files is quite important though to help
avoid races:
- When installing a packfile we move auxiliary data structures into
place before we install the ".idx" file.
- When deleting a packfile we first delete the ".idx" and ".pack"
files before deleting auxiliary data structures.
As such, to avoid any races with concurrently created or deleted packs
we need to make sure that we _first_ read auxiliary data structures
before we read the corresponding ".idx" or ".pack" file. Otherwise it
may easily happen that we return a populated but misclassified pack.
Add a comment to `add_packed_git()` to make future readers aware of this
ordering requirement.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
gitcli(7) recommends the *stuck form*. `--ref` is the only one which
does not use it.
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
46538012d9 (notes remove: --stdin reads from the standard input,
2011-05-18) added `--stdin` for the `remove` subcommand, documenting it
in the “Options” section. But `copy --stdin` was added before that, in
160baa0d9c (notes: implement 'git notes copy --stdin', 2010-03-12).
Treat this option equally between the two subcommands:
• remove: mention `--stdin` on the subcommand as well, like for `copy`
• copy: mention it as well under the option documentation
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Unlike `remove --stdin`, this option cannot be combined with object
names given via the command line.
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Cleaning up whitespace in metadata is typical porcelain behavior and
this default does not need to be pointed out.[1] Only speak up when
the default `--stripspace` is not used.
Also remove all misleading mentions of comment lines in the process;
see the previous commit.
Also remove the period that trails the parenthetical here.
† 1: See `-F` in git-commit(1) which has nothing to say about whitespace
cleanup. The cleanup discussion is on `--cleanup`.
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Document this option by copying the bullet list from git-stripspace(1).
A bullet list is cleaner when there are this many points to consider.
We also get a more standardized description of the multiple-blank-lines
behavior. Compare the repeating (git-notes(1)):
empty lines other than a single line between paragraphs
With (git-stripspace(1)):
multiple consecutive empty lines
And:
leading [...] whitespace
With:
empty lines from the beginning
Leading whitespace in the form of spaces (indentation) are not removed.
However, empty lines at the start of the message are removed.
Note that we drop the mentions of comment line handling because they are
wrong; this option does not control how lines which can be recognized as
comment lines are handled. Only interactivity controls that:
• Comment lines are stripped after editing interactively
• Lines which could be recognized as comment lines are left alone when
the message is given non-interactively
So it is misleading to document the comment line behavior on
this option.
Further, the text is wrong:
Lines starting with `#` will be stripped out in non-editor cases
like `-m`, [...]
Comment lines are still indirectly discussed on other options. We will
deal with them in the next commit.
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Mention it in parentheses since we are in a configuration context.
Refer to the default as such, not as “the” character.
Also don’t mention `#` again; just say “comment character”.
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Also quote `#` in line with the modern formatting convention.
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
