Further work to adjust the codebase for C23 that changes functions
like strchr() that discarded constness when they return a pointer into
a const string to preserve constness.
* jk/c23-const-preserving-fixes-more:
git-compat-util: fix CONST_OUTPARAM typo and indentation
Adjust the codebase for C23 that changes functions like strchr()
that discarded constness when they return a pointer into a const
string to preserve constness.
* jk/c23-const-preserving-fixes:
config: store allocated string in non-const pointer
rev-parse: avoid writing to const string for parent marks
revision: avoid writing to const string for parent marks
rev-parse: simplify dotdot parsing
revision: make handle_dotdot() interface less confusing
A few code paths that spawned child processes for network
connection weren't wait(2)ing for their children and letting "init"
reap them instead; they have been tightened.
* aa/reap-transport-child-processes:
transport-helper, connect: use clean_on_exit to reap children on abnormal exit
pack-objects's --stdin-packs=follow mode learns to handle
excluded-but-open packs.
* tb/stdin-packs-excluded-but-open:
repack: mark non-MIDX packs above the split as excluded-open
pack-objects: support excluded-open packs with --stdin-packs
t7704: demonstrate failure with once-cruft objects above the geometric split
pack-objects: refactor `read_packs_list_from_stdin()` to use `strmap`
pack-objects: plug leak in `read_stdin_packs()`
Object name handling (disambiguation and abbreviation) has been
refactored to be backend-generic, moving logic into the respective
object database backends.
* ps/odb-generic-object-name-handling:
odb: introduce generic `odb_find_abbrev_len()`
object-file: move logic to compute packed abbreviation length
object-name: move logic to compute loose abbreviation length
object-name: simplify computing common prefixes
object-name: abbreviate loose object names without `disambiguate_state`
object-name: merge `update_candidates()` and `match_prefix()`
object-name: backend-generic `get_short_oid()`
object-name: backend-generic `repo_collect_ambiguous()`
object-name: extract function to parse object ID prefixes
object-name: move logic to iterate through packed prefixed objects
object-name: move logic to iterate through loose prefixed objects
odb: introduce `struct odb_for_each_object_options`
oidtree: extend iteration to allow for arbitrary return codes
oidtree: modernize the code a bit
object-file: fix sparse 'plain integer as NULL pointer' error
1edeb9a (Win32: warn if the console font doesn't support Unicode,
2014-06-10) introduced both code to detect the current console font on
Windows Vista and newer and a fallback for older systems to detect the
default console font and issue a warning if that font doesn't support
unicode.
Since we haven't supported any Windows older than Vista in almost a
decade, we don't need to keep the workaround.
Signed-off-by: Matthias Aßhauer <mha1993@live.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git for Windows doesn't support anything prior to Windows 8.1 since 2.47.0
and Git followed along with commits like ce6ccba (mingw: drop Windows
7-specific work-around, 2025-08-04).
There is no need to pretend to the compiler that we still support Windows
Vista, just to lock us out of easy access to newer APIs. There is also no
need to have conflicting and unused definitions claiming we support some
versions of Windows XP or even Windows NT 4.0.
Bump all definitions of _WIN32_WINNT to a realistic value of Windows 8.1.
This will also simplify code for a followup commit that will improve cpu
core detection on multi-socket systems.
Signed-off-by: Matthias Aßhauer <mha1993@live.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There's a typo in the comment, making it hard to understand. And the
macro itself is indented with spaces rather than tab.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The way dash 0.5.13 handles non-ASCII contents in here-doc
is buggy and breaks our existing tests, which unfortunately
have been rewritten to avoid triggering the bug.
* ps/dash-buggy-0.5.13-workaround:
t9300: work around partial read bug in Dash v0.5.13
t: work around multibyte bug in quoted heredocs with Dash v0.5.13
Build instruction for recently added writev() compatibility wrapper
has been also added to cmake.
* js/cmake-needs-writev-compat-too:
cmake: use writev(3p) wrapper as needed
The experimental `git replay` command learned the `--ref=<ref>` option
to allow specifying which ref to update, overriding the default behavior.
* tc/replay-ref:
replay: allow to specify a ref with option --ref
replay: use stuck form in documentation and help message
builtin/replay: mark options as not negatable
"git replay" (experimental) learns, in addition to "pick" and
"replay", a new operating mode "revert".
* sa/replay-revert:
replay: add --revert mode to reverse commit changes
sequencer: extract revert message formatting into shared function
Reduce the reference to the_repository in the worktree subsystem.
* pw/worktree-reduce-the-repository:
worktree: reject NULL worktree in get_worktree_git_dir()
worktree add: stop reading ".git/HEAD"
worktree: remove "the_repository" from is_current_worktree()
Code clean-up around the recent "hooks defined in config" topic.
* ar/config-hook-cleanups:
hook: reject unknown hook names in git-hook(1)
hook: show disabled hooks in "git hook list"
hook: show config scope in git hook list
hook: introduce hook_config_cache_entry for per-hook data
t1800: add test to verify hook execution ordering
hook: make consistent use of friendly-name in docs
hook: replace hook_list_clear() -> string_list_clear_func()
hook: detect & emit two more bugs
hook: rename cb_data_free/alloc -> hook_data_free/alloc
hook: fix minor style issues
builtin/receive-pack: properly init receive_hook strbuf
hook: move unsorted_string_list_remove() to string-list.[ch]
`git backfill` learned to accept revision and pathspec arguments.
* ds/backfill-revs:
t5620: test backfill's unknown argument handling
path-walk: support wildcard pathspecs for blob filtering
backfill: work with prefix pathspecs
backfill: accept revision arguments
t5620: prepare branched repo for revision tests
revision: include object-name.h
Improve the recently introduced `git format-patch
--commit-list-format` (formerly `--cover-letter-format`) option,
including a new "modern" preset and better CLI ergonomics.
* mf/format-patch-commit-list-format:
format-patch: --commit-list-format without prefix
format-patch: add preset for --commit-list-format
format-patch: wrap generate_commit_list_cover()
format.commitListFormat: strip meaning from empty
docs/pretty-formats: add %(count) and %(total)
format-patch: rename --cover-letter-format option
format-patch: refactor generate_commit_list_cover
pretty.c: better die message %(count) and %(total)
"git format-patch --cover-letter" learns to use a simpler format
instead of the traditional shortlog format to list its commits with
a new --cover-letter-format option and format.commitListFormat
configuration variable.
* mf/format-patch-cover-letter-format:
docs: add usage for the cover-letter fmt feature
format-patch: add commitListFormat config
format-patch: add ability to use alt cover format
format-patch: move cover letter summary generation
pretty.c: add %(count) and %(total) placeholders
The `mingw_strftime()` wrapper exists to work around msvcrt.dll's
incomplete `strftime()` implementation by dynamically loading the
version from ucrtbase.dll at runtime via `LoadLibrary()` +
`GetProcAddress()`. When the binary is already linked against UCRT
(i.e. when building in the UCRT64 environment), the linked-in
`strftime()` is the ucrtbase.dll version, making the dynamic loading
needless churn: It's calling the very same code.
Simply guard both the declaration and implementation so that the
unnecessary work-around is skipped in UCRT builds.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is a companion patch of 3b9b2c2a29 (compat/posix: introduce
writev(3p) wrapper, 2026-03-13) where support for using the `writev()`
wrapper was introduced in the `Makefile` and the Meson-based build, but
the CMake build still needs that treatment, too.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The way dash 0.5.13 handles non-ASCII contents in here-doc
is buggy and breaks our existing tests, which unfortunately
have been rewritten to avoid triggering the bug.
* ps/dash-buggy-0.5.13-workaround:
t9300: work around partial read bug in Dash v0.5.13
t: work around multibyte bug in quoted heredocs with Dash v0.5.13
add_files_to_cache() used diff_files() to detect only the paths that
are different between the index and the working tree and add them,
which does not need rename detection, which interfered with unnecessary
conflicts.
* ng/add-files-to-cache-wo-rename:
read-cache: disable renames in add_files_to_cache
Update reftable library part with what is used in libgit2 to improve
portability to different target codebases and platforms.
* ps/reftable-portability:
reftable/system: add abstraction to mmap files
reftable/system: add abstraction to retrieve time in milliseconds
reftable/fsck: use REFTABLE_UNUSED instead of UNUSED
reftable/stack: provide fsync(3p) via system header
reftable: introduce "reftable-system.h" header
Various code clean-up around odb subsystem.
* ps/odb-cleanup:
odb: drop unneeded headers and forward decls
odb: rename `odb_has_object()` flags
odb: use enum for `odb_write_object` flags
odb: rename `odb_write_object()` flags
treewide: use enum for `odb_for_each_object()` flags
CodingGuidelines: document our style for flags
Further work to adjust the codebase for C23 that changes functions
like strchr() that discarded constness when they return a pointer into
a const string to preserve constness.
* jk/c23-const-preserving-fixes-more:
refs/files-backend: drop const to fix strchr() warning
http: drop const to fix strstr() warning
range-diff: drop const to fix strstr() warnings
pkt-line: make packet_reader.line non-const
skip_prefix(): check const match between in and out params
pseudo-merge: fix disk reads from find_pseudo_merge()
find_last_dir_sep(): convert inline function to macro
run-command: explicitly cast away constness when assigning to void
pager: explicitly cast away strchr() constness
transport-helper: drop const to fix strchr() warnings
http: add const to fix strchr() warnings
convert: add const to fix strchr() warnings
When executing t9300 with Dash v0.5.13.1 we can see that the test hangs
completely with the following (condensed) trace:
git fast-import
+ error=1
+ read output
+ cat input
+ echo checkpoint
+ echo progress checkpoint
+ test rogress checkpoint = progress checkpoint
+ test rogress checkpoint = UNEXPECTED
+ echo cruft: rogress checkpoint
cruft: rogress checkpoint
+ read output
+ test = progress checkpoint
+ test = UNEXPECTED
+ echo cruft:
cruft:
+ read output
Basically, what's happening here is that we spawn git-fast-import(1) and
wait for it to output a certain string, "progress checkpoint". Curiously
though, what we end up reading is "rogress checkpoint" -- so the first
byte of the expected string is missing.
Same as in the preceding commit, this seems to be a bug in Dash itself
that bisects to c5bf970 (expand: Add multi-byte support to pmatch,
2024-06-02). But other than in the preceding commit, this bug has
already been fixed upstream in 079059a (input: Fix heap-buffer-overflow
in preadbuffer on long lines, 2026-02-11), which is part of v0.5.13.2.
For now though, work around the bug by waiting for the expected output
in a different way. There is no good reason why one version should work
better than the other, but at least the new version doesn't exhibit the
bug. And, if you ask me, it's also slightly easier to read.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When executing our test suite with Dash v0.5.13.2 one can observe
several test failures that all have the same symptoms: we have a quoted
heredoc that contains multibyte characters, but the final data does not
match what we actually wanted to write. One such example is in t0300,
where we see the diffs like the following:
--- expect-stdout 2026-04-01 07:25:45.249919440 +0000
+++ stdout 2026-04-01 07:25:45.254919509 +0000
@@ -1,5 +1,5 @@
protocol=https
host=example.com
-path=perú.git
+path=perú.git
username=foo
password=bar
While seemingly the same, the data that we've written via the heredoc
contains some invisible bytes. The expected hex representation of the
string is:
7065 72c3 ba2e 6769 74 per...git
But what we actually get instead is this string:
7065 7285 02c3 ba02 852e 6769 74 per.......git
What's important to note here is that the multibyte character exists in
both versions. But in the broken version we see that the bytes are
wrapped in a sequence of "85 02" and "02 85". This is the CTLMBCHAR byte
sequence of Dash, which it uses internally to quote multibyte sequences.
As it turns out, this bug was introduced in c5bf970 (expand: Add
multi-byte support to pmatch, 2024-06-02), which adds multibyte support
to more contexts of Dash. One of these contexts seems to be in heredocs,
and Dash _does_ correctly unquote these multibyte sequences when using
an unquoted heredoc. But the bug seems to be that this unquoting does
not happen in quoted heredocs, and the bug still exists on the latest
"master" branch.
For now, work around the bug by using unquoted heredocs instead.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In our codebase we have a couple of wrappers around mmap(3p) that allow
us to reimplement the syscall on platforms that don't have it natively,
like for example Windows. Other projects that embed the reftable library
may have a different infra though to hook up mmap wrappers, but these
are currently hard to integrate.
Provide the infrastructure to let projects easily define the mmap
interface with a custom struct and custom functions.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We directly call gettimeofday(3p), which may not be available on some
platforms. Provide the infrastructure to let projects easily use their
own implementations of this function.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While we have the reftable-specific `REFTABLE_UNUSED` header, we
accidentally introduced a new usage of the Git-specific `UNUSED` header
into the reftable library in 9051638519 (reftable: add code to
facilitate consistency checks, 2025-10-07).
Convert the site to use `REFTABLE_UNUSED`.
Ideally, we'd move the definition of `UNUSED` into "git-compat-util.h"
so that it becomes in accessible to the reftable library. But this is
unfortunately not easily possible as "compat/mingw-posix.h" requires
this macro, and this header is included by "compat/posix.h".
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Users of the reftable library are expected to provide their own function
callback in cases they want to sync(3p) data to disk via the reftable
write options. But if no such function was provided we end up calling
fsync(3p) directly, which may not even be available on some systems.
While dropping the explicit call to fsync(3p) would work, it would lead
to an unsafe default behaviour where a project may have forgotten to set
up the callback function, and that could lead to potential data loss. So
this is not a great solution.
Instead, drop the callback function and make it mandatory for the
project to define fsync(3p). In the case of Git, we can then easily
inject our custom implementation via the "reftable-system.h" header so
that we continue to use `fsync_component()`.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We're including a couple of standard headers like <stdint.h> in a bunch
of locations, which makes it hard for a project to plug in their own
logic for making required functionality available. For us this is for
example via "compat/posix.h", which already includes all of the system
headers relevant to us.
Introduce a new "reftable-system.h" header that allows projects to
provide their own headers. This new header is supposed to contain all
the project-specific bits to provide the POSIX-like environment, and some
additional supporting code. With this change, we thus have the following
split in our system-specific code:
- "reftable/reftable-system.h" is the project-specific header that
provides a POSIX-like environment. Every project is expected to
provide their own implementation.
- "reftable/system.h" contains the project-independent definition of
the interfaces that a project needs to implement. This file should
not be touched by a project.
- "reftable/system.c" contains the project-specific implementation of
the interfaces defined in "system.h". Again, every project is
expected to provide their own implementation.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In show_one_reflog_ent(), we're fed a writable strbuf buffer, which we
parse into the various reflog components. We write a NUL over email_end
to tie off one of the fields, and thus email_end must be non-const.
But with a C23 implementation of libc, strchr() will now complain when
assigning the result to a non-const pointer from a const one. So we can
fix this by making the source pointer non-const.
But there's a catch. We derive that source pointer by parsing the line
with parse_oid_hex_algop(), which requires a const pointer for its
out-parameter. We can work around that by teaching it to use our
CONST_OUTPARAM() trick, just like skip_prefix().
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano