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2022-01-19getcwd(mingw): handle the case when there is no cwdJohannes Schindelin1-0/+4
A recent upstream topic introduced checks for certain Git commands that prevent them from deleting the current working directory, introducing also a regression test that ensures that commands such as `git version` _can_ run without a current working directory. While technically not possible on Windows via the regular Win32 API, we do run the regression tests in an MSYS2 Bash which uses a POSIX emulation layer (the MSYS2/Cygwin runtime) where a really evil hack _does_ allow to delete a directory even if it is the current working directory. Therefore, Git needs to be prepared for a missing working directory, even on Windows. This issue was not noticed in upstream Git because there was no caller that tried to discover a Git directory with a deleted current working directory in the test suite. But in the microsoft/git fork, we do want to run `pre-command`/`post-command` hooks for every command, even for `git version`, which means that we make precisely such a call. The bug is not in that `pre-command`/`post-command` feature, though, but in `mingw_getcwd()` and needs to be addressed there. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-18branch,checkout: fix --track usage stringsJosh Steadmon2-5/+5
As Ævar pointed out in [1], the use of PARSE_OPT_LITERAL_ARGHELP with a list of allowed parameters is not recommended. Both git-branch and git-checkout were changed in d311566 (branch: add flags and config to inherit tracking, 2021-12-20) to use this discouraged combination for their --track flags. Fix this by removing PARSE_OPT_LITERAL_ARGHELP, and changing the arghelp to simply be "mode". Users may discover allowed values in the manual pages. [1]: https://lore.kernel.org/git/220111.86a6g3yqf9.gmgdl@evledraar.gmail.com/ Signed-off-by: Josh Steadmon <steadmon@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-18Makefile: FreeBSD cannot do C99-or-below buildJunio C Hamano1-0/+5
In "make DEVELOPER=YesPlease" builds, we try to help developers to catch as many potential issues as they can by using -Wall and turning compilation warnings into errors. In the same spirit, we recently started adding -std=gnu99 to their CFLAGS, so that they can notice when they accidentally used language features beyond C99. It however turns out that FreeBSD 13.0 mistakenly uses C11 extension in its system header files regardless of what __STDC_VERSION__ says, which means that the platform (unless we tweak their system headers) cannot be used for this purpose. It seems that -std=gnu99 is only added conditionally even in today's config.mak.dev, so it is fine if we dropped -std=gnu99 from there. Which means that developers on FreeBSD cannot participate in vetting use of features beyond C99, but there are developers on other platforms who will, so it's not too bad. We might want a more "fundamental" fix to make the platform capable of taking -std=gnu99, like working around the use of unconditional C11 extension in its system header files by supplying a set of "replacement" definitions in our header files. We chose not to pursue such an approach for two reasons at this point: (1) The fix belongs to the FreeBSD project, not this project, and such an upstream fix may happen hopefully in a not-too-distant future. (2) Fixing such a bug in system header files and working it around can lead to unexpected breakages (other parts of their system header files may not be expecting to see and do not work well with our "replacement" definitions). This close to the final release of this cycle, we have no time for that. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-16build: centos/RHEL 7 ships with an older gcc and zlibDavid Aguilar1-0/+5
GCC 4.8.5 is the default system compiler on centos7/RHEL7. This version requires -std=c99 to enable c99 support. zlib 1.2.7 on centos7/rhel7 lacks uncompress2(). Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-15Git 2.35-rc1v2.35.0-rc1Junio C Hamano1-1/+1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-13reftable tests: avoid "int" overflow, use "uint64_t"Ævar Arnfjörð Bjarmason1-2/+2
Change code added in 1ae2b8cda84 (reftable: add merged table view, 2021-10-07) to consistently use the "uint64_t" type. These "min" and "max" variables get passed in the body of this function to a function whose prototype is: [...] reftable_writer_set_limits([...], uint64_t min, uint64_t max This avoids the following warning on SunCC 12.5 on gcc211.fsffrance.org: "reftable/merged_test.c", line 27: warning: initializer does not fit or is out of range: 0xffffffff Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-13reftable: avoid initializing structs from structsHan-Wen Nienhuys1-11/+11
Apparently, the IBM xlc compiler doesn't like this. Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-13t1450-fsck: exec-bit is not needed to make loose object writableJohannes Sixt1-2/+2
A test case wants to append stuff to a loose object file to ensure that this kind of corruption is detected. To make a read-only loose object file writable with chmod, it is not necessary to also make it executable. Replace the bitmask 755 with the instruction +w to request only the write bit and to also heed the umask. And get rid of a POSIXPERM prerequisite, which is unnecessary for the test. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-13refs API: use "failure_errno", not "errno"Ævar Arnfjörð Bjarmason2-4/+1
Fix a logic error in refs_resolve_ref_unsafe() introduced in a recent series of mine to abstract the refs API away from errno. See 96f6623ada0 (Merge branch 'ab/refs-errno-cleanup', 2021-11-29)for that series. In that series introduction of "failure_errno" to refs_resolve_ref_unsafe came in ef18119dec8 (refs API: add a version of refs_resolve_ref_unsafe() with "errno", 2021-10-16). There we'd set "errno = 0" immediately before refs_read_raw_ref(), and then set "failure_errno" to "errno" if errno was non-zero afterwards. Then in the next commit 8b72fea7e91 (refs API: make refs_read_raw_ref() not set errno, 2021-10-16) we started expecting "refs_read_raw_ref()" to set "failure_errno". It would do that if refs_read_raw_ref() failed, but it wouldn't be the same errno. So we might set the "errno" here to any arbitrary bad value, and end up e.g. returning NULL when we meant to return the refname from refs_resolve_ref_unsafe(), or the other way around. Instrumenting this code will reveal cases where refs_read_raw_ref() will fail, and "errno" and "failure_errno" will be set to different values. In practice I haven't found a case where this scary bug changed anything in practice. The reason for that is that we'll not care about the actual value of "errno" here per-se, but only whether: 1. We have an errno 2. If it's one of ENOENT, EISDIR or ENOTDIR. See the adjacent code added in a1c1d8170db (refs_resolve_ref_unsafe: handle d/f conflicts for writes, 2017-10-06) I.e. if we clobber "failure_errno" with "errno", but it happened to be one of those three, and we'll clobber it with another one of the three we were OK. Perhaps there are cases where the difference ended up mattering, but I haven't found them. Instrumenting the test suite to fail if "errno" and "failure_errno" are different shows a lot of failures, checking if they're different *and* one is but not the other is outside that list of three "errno" values yields no failures. But let's fix the obvious bug. We should just stop paying attention to "errno" in refs_resolve_ref_unsafe(). In addition let's change the partial resetting of "errno" in files_read_raw_ref() to happen just before the "return", to ensure that any such bug will be more easily spotted in the future. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-13Last minute fixes before -rc1Junio C Hamano1-1/+10
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-12build: NonStop ships with an older zlibRandall S. Becker1-0/+1
Notably, it lacks uncompress2(); use the fallback we ship in our tree instead. Signed-off-by: Randall S. Becker <rsbecker@nexbridge.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-12packfile: fix off-by-one error in decoding logicJunio C Hamano1-1/+1
shift count being exactly at 7-bit smaller than the long is OK; on 32-bit architecture, shift count starts at 4 and goes through 11, 18 and 25, at which point the guard triggers one iteration too early. Reported-by: Marc Strapetz <marc.strapetz@syntevo.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-12t/gpg: simplify test for unknown keyFabian Stelzer1-20/+2
To test for a key that is completely unknown to the keyring we need one to sign the commit with. This was done by generating a new key and not add it into the keyring. To avoid the key generation overhead and problems where GPG did hang in CI during it, switch GNUPGHOME to the empty $GNUPGHOME_NOT_USED instead, therefore making all used keys unknown for this single `verify-commit` call. Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Fabian Stelzer <fs@gigacodes.de> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-12branch: missing space fix at line 313Bagas Sanjaya1-1/+1
The message introduced by commit 593a2a5d06 (branch: protect branches checked out in all worktrees, 2021-12-01) is missing a space in the first line, add it. Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-10fmt-merge-msg: prevent use-after-free with signed tagsTaylor Blau2-1/+9
When merging a signed tag, fmt_merge_msg_sigs() is responsible for populating the body of the merge message with the names of the signed tags, their signatures, and the validity of those signatures. In 02769437e1 (ssh signing: use sigc struct to pass payload, 2021-12-09), check_signature() was taught to pass the object payload via the sigc struct instead of passing the payload buffer separately. In effect, 02769437e1 causes buf, and sigc.payload to point at the same region in memory. This causes a problem for fmt_tag_signature(), which wants to read from this location, since it is freed beforehand by signature_check_clear() (which frees it via sigc's `payload` member). That makes the subsequent use in fmt_tag_signature() a use-after-free. As a result, merge messages did not contain the body of any signed tags. Luckily, they tend not to contain garbage, either, since the result of strstr()-ing the object buffer in fmt_tag_signature() is guarded: const char *tag_body = strstr(buf, "\n\n"); if (tag_body) { tag_body += 2; strbuf_add(tagbuf, tag_body, buf + len - tag_body); } Unfortunately, the tests in t6200 did not catch this at the time because they do not search for the body of signed tags in fmt-merge-msg's output. Resolve this by waiting to call signature_check_clear() until after its contents can be safely discarded. Harden ourselves against any future regressions in this area by making sure we can find signed tag messages in the output of fmt-merge-msg, too. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-10Git 2.35-rc0v2.35.0-rc0Junio C Hamano2-1/+60
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-10cache.h: drop duplicate `ensure_full_index()` declarationMartin Ågren1-2/+0
There are two identical declarations of `ensure_full_index()` in cache.h. Commit 3964fc2aae ("sparse-index: add guard to ensure full index", 2021-03-30) provided an empty implementation of `ensure_full_index()`, declaring it in a new file sparse-index.h. When commit 4300f8442a ("sparse-index: implement ensure_full_index()", 2021-03-30) fleshed out the implementation, it added an identical declaration to cache.h. Then 118a2e8bde ("cache: move ensure_full_index() to cache.h", 2021-04-01) favored having the declaration in cache.h. Because of the double declaration, at that point we could have just dropped the one in sparse-index.h, but instead it got moved to cache.h. As a result, cache.h contains the exact same function declaration twice. Drop the one under "/* Name hashing */", in favor of the one under "/* Initialize and use the cache information */". Signed-off-by: Martin Ågren <martin.agren@gmail.com> Acked-by: Victoria Dye <vdye@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-09lazyload: use correct calling conventionsMatthias Aßhauer5-10/+15
Christoph Reiter reported on the Git for Windows issue tracker[1], that mingw_strftime() imports strftime() from ucrtbase.dll with the wrong calling convention. It should be __cdecl instead of WINAPI, which we always use in DECLARE_PROC_ADDR(). The MSYS2 project encountered cmake sefaults on x86 Windows caused by the same issue in the cmake source. [2] There are no known git crashes that where caused by this, yet, but we should try to prevent them. We import two other non-WINAPI functions via DECLARE_PROC_ADDR(), too. * NtSetSystemInformation() (NTAPI) * GetUserNameExW() (SEC_ENTRY) NTAPI, SEC_ENTRY and WINAPI are all ususally defined as __stdcall, but there are circumstances where they're defined differently. Teach DECLARE_PROC_ADDR() about calling conventions and be explicit about when we want to use which calling convention. Import winnt.h for the definition of NTAPI and sspi.h for SEC_ENTRY near their respective only users. [1] https://github.com/git-for-windows/git/issues/3560 [2] https://github.com/msys2/MINGW-packages/issues/10152 Reported-By: Christoph Reiter <reiter.christoph@gmail.com> Signed-off-by: Matthias Aßhauer <mha1993@live.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-07fetch: fix deadlock when cleaning up lockfiles in async signalsPatrick Steinhardt4-11/+33
When fetching packfiles, we write a bunch of lockfiles for the packfiles we're writing into the repository. In order to not leave behind any cruft in case we exit or receive a signal, we register both an exit handler as well as signal handlers for common signals like SIGINT. These handlers will then unlink the locks and free the data structure tracking them. We have observed a deadlock in this logic though: (gdb) bt #0 __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95 #1 0x00007f4932bea2cd in _int_free (av=0x7f4932f2eb20 <main_arena>, p=0x3e3e4200, have_lock=0) at malloc.c:3969 #2 0x00007f4932bee58c in __GI___libc_free (mem=<optimized out>) at malloc.c:2975 #3 0x0000000000662ab1 in string_list_clear () #4 0x000000000044f5bc in unlock_pack_on_signal () #5 <signal handler called> #6 _int_free (av=0x7f4932f2eb20 <main_arena>, p=<optimized out>, have_lock=0) at malloc.c:4024 #7 0x00007f4932bee58c in __GI___libc_free (mem=<optimized out>) at malloc.c:2975 #8 0x000000000065afd5 in strbuf_release () #9 0x000000000066ddb9 in delete_tempfile () #10 0x0000000000610d0b in files_transaction_cleanup.isra () #11 0x0000000000611718 in files_transaction_abort () #12 0x000000000060d2ef in ref_transaction_abort () #13 0x000000000060d441 in ref_transaction_prepare () #14 0x000000000060e0b5 in ref_transaction_commit () #15 0x00000000004511c2 in fetch_and_consume_refs () #16 0x000000000045279a in cmd_fetch () #17 0x0000000000407c48 in handle_builtin () #18 0x0000000000408df2 in cmd_main () #19 0x00000000004078b5 in main () The process was killed with a signal, which caused the signal handler to kick in and try free the data structures after we have unlinked the locks. It then deadlocks while calling free(3P). The root cause of this is that it is not allowed to call certain functions in async-signal handlers, as specified by signal-safety(7). Next to most I/O functions, this list of disallowed functions also includes memory-handling functions like malloc(3P) and free(3P) because they may not be reentrant. As a result, if we execute such functions in the signal handler, then they may operate on inconistent state and fail in unexpected ways. Fix this bug by not calling non-async-signal-safe functions when running in the signal handler. We're about to re-raise the signal anyway and will thus exit, so it's not much of a problem to keep the string list of lockfiles untouched. Note that it's fine though to call unlink(2), so we'll still clean up the lockfiles correctly. Signed-off-by: Patrick Steinhardt <ps@pks.im> Reviewed-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05The seventh batchJunio C Hamano1-0/+49
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05i18n: turn even more messages into "cannot be used together" onesJean-Noël Avila23-41/+47
Even if some of these messages are not subject to gettext i18n, this helps bring a single style of message for a given error type. Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05i18n: ref-filter: factorize "%(foo) atom used without %(bar) atom"Jean-Noël Avila1-4/+4
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05i18n: factorize "--foo outside a repository"Jean-Noël Avila1-3/+3
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05i18n: refactor "unrecognized %(foo) argument" stringsJean-Noël Avila1-7/+7
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05i18n: factorize "no directory given for --foo"Jean-Noël Avila1-3/+3
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05i18n: factorize "--foo requires --bar" and the likeJean-Noël Avila21-24/+24
They are all replaced by "the option '%s' requires '%s'", which is a new string but replaces 17 previous unique strings. Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05i18n: tag.c factorize i18n stringsJean-Noël Avila1-9/+14
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05i18n: standardize "cannot open" and "cannot read"Jean-Noël Avila2-4/+4
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05i18n: turn "options are incompatible" into "cannot be used together"Jean-Noël Avila31-64/+64
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05i18n: refactor "%s, %s and %s are mutually exclusive"Jean-Noël Avila5-7/+7
Use placeholders for constant tokens. The strings are turned into "cannot be used together" Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05i18n: refactor "foo and bar are mutually exclusive"Jean-Noël Avila10-13/+13
Use static strings for constant parts of the sentences. They are all turned into "cannot be used together". Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05grep: align default colors with GNU grep onesLénaïc Huard1-3/+3
git-grep shares a lot of options with the standard grep tool. Like GNU grep, it has coloring options to highlight the matching text. And like it, it has options to customize the various colored parts. This patch updates the default git-grep colors to make them match the GNU grep default ones [1]. It was possible to get the same result by setting the various `color.grep.<slot>` options, but this patch makes `git grep --color` share the same color scheme as `grep --color` by default without any user configuration. [1] https://www.man7.org/linux/man-pages/man1/grep.1.html#ENVIRONMENT Signed-off-by: Lénaïc Huard <lenaic@lhuard.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05t/README: fix typoMarc Strapetz1-1/+1
Signed-off-by: Marc Strapetz <marc.strapetz@syntevo.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-05stash: do not return before restoring untracked filesElijah Newren2-4/+29
In commit bee8691f19 ("stash: restore untracked files AFTER restoring tracked files", 2021-09-10), we correctly identified that we should restore changes to tracked files before attempting to restore untracked files, and accordingly moved the code for restoring untracked files a few lines down in do_apply_stash(). Unfortunately, the intervening lines had some early return statements meaning that we suddenly stopped restoring untracked files in some cases. Even before the previous commit, there was another possible issue with the current code -- a post-stash-apply 'git status' that was intended to be run after restoring the stash was skipped when we hit a conflict (or other error condition), which seems slightly inconsistent. Fix both issues by saving the return status, and letting other functionality run before returning. Reported-by: AJ Henderson Test-case-by: Randall S. Becker <randall.becker@nexbridge.ca> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-04subtree: fix argument handling in check_parentsJames Limbouris1-4/+3
315a84f9aa0 (subtree: use commits before rejoins for splits, 2018-09-28) changed the signature of check_parents from 'check_parents [REV...]' to 'check_parents PARENTS_EXPR INDENT'. In other words the variable list of parent revisions became a list embedded in a string. However it neglected to unpack the list again before sending it to cache_miss, leading to incorrect calls whenever more than one parent was present. This is the case whenever a merge commit is processed, with the end result being a loss of performance from unecessary rechecks. The indent parameter was subsequently removed in e9525a8a029 (subtree: have $indent actually affect indentation, 2021-04-27), but the argument handling bug remained. For consistency, take multiple arguments in check_parents, and pass all of them to cache_miss separately. Signed-off-by: James Limbouris <james@digitalmatter.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-01-04The sixth batchJunio C Hamano1-0/+11
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-30sparse-checkout: refuse to add to bad patternsDerrick Stolee3-3/+9
When in cone mode sparse-checkout, it is unclear how 'git sparse-checkout add <dir1> ...' should behave if the existing sparse-checkout file does not match the cone mode patterns. Change the behavior to fail with an error message about the existing patterns. Also, all cone mode patterns start with a '/' character, so add that restriction. This is necessary for our example test 'cone mode: warn on bad pattern', but also requires modifying the example sparse-checkout file we use to test the warnings related to recognizing cone mode patterns. This error checking would cause a failure further down the test script because of a test that adds non-cone mode patterns without cleaning them up. Perform that cleanup as part of the test now. Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-30sparse-checkout: fix OOM error with mixed patternsDerrick Stolee2-1/+12
Add a test to t1091-sparse-checkout-builtin.sh that would result in an infinite loop and out-of-memory error before this change. The issue relies on having non-cone-mode patterns while trying to modify the patterns in cone-mode. The fix is simple, allowing us to break from the loop when the input path does not contain a slash, as the "dir" pattern we added does not. This is only a fix to the critical out-of-memory error. A better response to such a strange state will follow in a later change. Reported-by: Calbabreaker <calbabreaker@gmail.com> Helped-by: Taylor Blau <me@ttaylorr.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-30sparse-checkout: fix segfault on malformed patternsDerrick Stolee2-3/+22
Then core.sparseCheckoutCone is enabled, the sparse-checkout patterns are used to populate two hashsets that accelerate pattern matching. If the user modifies the sparse-checkout file outside of the 'sparse-checkout' builtin, then strange patterns can happen, triggering some error checks. One of these error checks is possible to hit when some special characters exist in a line. A warning message is correctly written to stderr, but then there is additional logic that attempts to remove the line from the hashset and free the data. This leads to a segfault in the 'git sparse-checkout list' command because it iterates over the contents of the hashset, which is now invalid. The fix here is to stop trying to remove from the hashset. In addition, we disable cone mode sparse-checkout because of the malformed data. This results in the pattern-matching working with a possibly-slower algorithm, but using the patterns as they are in the sparse-checkout file. This also changes the behavior of commands such as 'git sparse-checkout list' because the output patterns will be the contents of the sparse-checkout file instead of the list of directories. This is an existing behavior for other types of bad patterns. Add a test that triggers the segfault without the code change. Reported-by: John Burnett <johnburnett@johnburnett.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-30SubmittingPatchs: clarify choice of base and testingJunio C Hamano1-14/+39
We encourage identifying what, among many topics on `next`, exact topics a new work depends on, instead of building directly on `next`. Let's clarify this in the documentation. Developers should know what they are building on top of, and be aware of which part of the system is currently being worked on. Encouraging them to make trial merges to `next` and `seen` themselves will incentivize them to read others' changes and understand them, eventually helping the developers to coordinate among themselves and reviewing each others' changes. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-30merge-ort: fix bug with renormalization and rename/delete conflictsElijah Newren2-3/+42
Ever since commit a492d5331c ("merge-ort: ensure we consult df_conflict and path_conflicts", 2021-06-30), when renormalization is active AND a file is involved in a rename/delete conflict BUT the file is unmodified (either before or after renormalization), merge-ort was running into an assertion failure. Prior to that commit (or if assertions were compiled out), merge-ort would mis-merge instead, ignoring the rename/delete conflict and just deleting the file. Remove the assertions, fix the code appropriately, leave some good comments in the code, and add a testcase for this situation. Reported-by: Ralf Thielow <ralf.thielow@gmail.com> Signed-off-by: Elijah Newren <newren@gmail.com> Reviewed-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-26Makefile: don't invoke msgfmt with --statisticsÆvar Arnfjörð Bjarmason1-1/+1
Remove the --statistics flag that I added in 5e9637c6297 (i18n: add infrastructure for translating Git with gettext, 2011-11-18). Our Makefile output is good about reducing verbosity by default, except in this case: $ rm -rf po/build/locale/e*; time make -j $(nproc) all SUBDIR templates MKDIR -p po/build/locale/el/LC_MESSAGES MSGFMT po/build/locale/el/LC_MESSAGES/git.mo MKDIR -p po/build/locale/es/LC_MESSAGES MSGFMT po/build/locale/es/LC_MESSAGES/git.mo 1038 translated messages, 3325 untranslated messages. 5230 translated messages. I didn't have any good reason for using --statistics at the time other than ad-hoc eyeballing of the output. We don't need to spew out exactly how many messages we've got translated every time. Now we'll instead emit: $ rm -rf po/build/locale/e*; time make -j $(nproc) all SUBDIR templates MKDIR -p po/build/locale/el/LC_MESSAGES MSGFMT po/build/locale/el/LC_MESSAGES/git.mo MKDIR -p po/build/locale/es/LC_MESSAGES MSGFMT po/build/locale/es/LC_MESSAGES/git.mo Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-25Makefile: move -DPAGER_ENV from BASIC_CFLAGS to EXTRA_CPPFLAGSÆvar Arnfjörð Bjarmason1-5/+6
Remove -DPAGER_ENV from the BASIC_CFLAGS and instead have it passed via the EXTRA_CPPFLAGS passed when compiling pager.c. This doesn't change anything except to make it clear that only pager.c needs this, as it's the only user of this define. See 995bc22d7f8 (pager: move pager-specific setup into the build, 2016-08-04) for the commit that originally added this. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-25Makefile: correct the dependency graph of hook-list.hÆvar Arnfjörð Bjarmason1-2/+2
Fix an issue in my cfe853e66be (hook-list.h: add a generated list of hooks, like config-list.h, 2021-09-26), the builtin/help.c was inadvertently made to depend on hook-list.h, but it's used by builtin/bugreport.c. The hook.c also does not depend on hook-list.h. It did in an earlier version of the greater series cfe853e66be was extracted from, but not anymore. We might end up needing that line again, but let's remove it for now. Reported-by: Mike Hommey <mh@glandium.org> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-25t/perf: do not run tests in user's $SHELLJohannes Altmanninger1-1/+1
The environment variable $SHELL is usually set to the user's interactive shell. Our build and test scripts never use $SHELL because there are no guarantees about its input language. Instead, we use /bin/sh which should be a POSIX shell. For systems with a broken /bin/sh, we allow to override that path via SHELL_PATH. To run tests in yet another shell we allow to override SHELL_PATH with TEST_SHELL_PATH. Perf tests run in $SHELL via a wrapper defined in t/perf/perf-lib.sh, so they break with e.g. SHELL=python. Use TEST_SHELL_PATH like in other tests. TEST_SHELL_PATH is always defined because t/perf/perf-lib.sh includes t/test-lib.sh, which includes GIT-BUILD-OPTIONS. Acked-by: Jeff King <peff@peff.net> Signed-off-by: Johannes Altmanninger <aclopte@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-23reftable: support preset file mode for writingHan-Wen Nienhuys3-10/+56
Create files with mode 0666, so umask works as intended. Provides an override, which is useful to support shared repos (test t1301-shared-repo.sh). Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-23reftable: signal overflowHan-Wen Nienhuys4-0/+44
reflog entries have unbounded size. In theory, each log ('g') block in reftable can have an arbitrary size, so the format allows for arbitrarily sized reflog messages. However, in the implementation, we are not scaling the log blocks up with the message, and writing a large message fails. This triggers a failure for reftable in t7006-pager.sh. Until this is fixed more structurally, report an error from within the reftable library for easier debugging. Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-23reftable: fix typo in headerHan-Wen Nienhuys1-1/+1
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-23sparse-checkout: remove stray trailing spaceElijah Newren1-1/+1
Reported-by: Jiang Xin <worldhello.net@gmail.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-23The fifth batchJunio C Hamano1-0/+13
Signed-off-by: Junio C Hamano <gitster@pobox.com>