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4 daysMerge branch 'js/no-builtins-on-disk-option' into maintJunio C Hamano
Brown-paper-bag fix. * js/no-builtins-on-disk-option: SKIP_DASHED_BUILT_INS: do not skip the bin/ programs
5 daysSKIP_DASHED_BUILT_INS: do not skip the bin/ programsJohannes Schindelin
The idea of the `SKIP_DASHED_BUILT_INS` option is to stop hard-linking the built-in commands as separate executables. The patches to do that specifically excluded the three commands `receive-pack`, `upload-archive` and `upload-pack`, though: these commands are expected to be present in the `PATH` in their dashed form on the server side of any fetch/push. However, due to an oversight by myself, even if those commands were still hard-linked, they were not installed into `bin/`. Noticed-by: Michael Forney <mforney@mforney.org> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-08Makefile: ASCII-sort += listsDenton Liu
In 805d9eaf5e (Makefile: ASCII-sort += lists, 2020-03-21), the += lists in the Makefile were sorted into ASCII order. Since then, more out of order elements have been introduced. Sort these lists back into ASCII order. This patch is best viewed with `--color-moved`. Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-05Merge branch 'rs/archive-add-file'Junio C Hamano
"git archive" learns the "--add-file" option to include untracked files into a snapshot from a tree-ish. * rs/archive-add-file: Makefile: use git-archive --add-file archive: add --add-file archive: read short blobs in archive.c::write_archive_entry()
2020-10-04Merge branch 'jk/drop-unaligned-loads'Junio C Hamano
Compilation fix around type punning. * jk/drop-unaligned-loads: Revert "fast-export: use local array to store anonymized oid" bswap.h: drop unaligned loads
2020-10-04Merge branch 'js/no-builtins-on-disk-option'Junio C Hamano
The installation procedure learned to optionally omit "git-foo" executable files for each 'foo' built-in subcommand, which are only required by old timers that still rely on the age old promise that prepending "git --exec-path" output to PATH early in their script will keep the "git-foo" calls they wrote working. The old attempt to remove these executables from the disk failed in the 1.6 era; it may be worth attempting again, but I think it is worth to keep this topic separate from such a policy change to help it graduate early. * js/no-builtins-on-disk-option: ci: stop linking built-ins to the dashed versions Optionally skip linking/copying the built-ins msvc: copy the correct `.pdb` files in the Makefile target `install`
2020-09-25Merge branch 'jx/proc-receive-hook'Junio C Hamano
"git receive-pack" that accepts requests by "git push" learned to outsource most of the ref updates to the new "proc-receive" hook. * jx/proc-receive-hook: doc: add documentation for the proc-receive hook transport: parse report options for tracking refs t5411: test updates of remote-tracking branches receive-pack: new config receive.procReceiveRefs doc: add document for capability report-status-v2 New capability "report-status-v2" for git-push receive-pack: feed report options to post-receive receive-pack: add new proc-receive hook t5411: add basic test cases for proc-receive hook transport: not report a non-head push as a branch
2020-09-24bswap.h: drop unaligned loadsJeff King
Our put_be32() routine and its variants (get_be32(), put_be64(), etc) has two implementations: on some platforms we cast memory in place and use nothl()/htonl(), which can cause unaligned memory access. And on others, we pick out the individual bytes using bitshifts. This introduces extra complexity, and sometimes causes compilers to generate warnings about type-punning. And it's not clear there's any performance advantage. This split goes back to 660231aa97 (block-sha1: support for architectures with memory alignment restrictions, 2009-08-12). The unaligned versions were part of the original block-sha1 code in d7c208a92e (Add new optimized C 'block-sha1' routines, 2009-08-05), which says it is: Based on the mozilla SHA1 routine, but doing the input data accesses a word at a time and with 'htonl()' instead of loading bytes and shifting. Back then, Linus provided timings versus the mozilla code which showed a 27% improvement: https://lore.kernel.org/git/alpine.LFD.2.01.0908051545000.3390@localhost.localdomain/ However, the unaligned loads were either not the useful part of that speedup, or perhaps compilers and processors have changed since then. Here are times for computing the sha1 of 4GB of random data, with and without -DNO_UNALIGNED_LOADS (and BLK_SHA1=1, of course). This is with gcc 10, -O2, and the processor is a Core i9-9880H. [stock] Benchmark #1: t/helper/test-tool sha1 <foo.rand Time (mean ± σ): 6.638 s ± 0.081 s [User: 6.269 s, System: 0.368 s] Range (min … max): 6.550 s … 6.841 s 10 runs [-DNO_UNALIGNED_LOADS] Benchmark #1: t/helper/test-tool sha1 <foo.rand Time (mean ± σ): 6.418 s ± 0.015 s [User: 6.058 s, System: 0.360 s] Range (min … max): 6.394 s … 6.447 s 10 runs And here's the same test run on an AMD A8-7600, using gcc 8. [stock] Benchmark #1: t/helper/test-tool sha1 <foo.rand Time (mean ± σ): 11.721 s ± 0.113 s [User: 10.761 s, System: 0.951 s] Range (min … max): 11.509 s … 11.861 s 10 runs [-DNO_UNALIGNED_LOADS] Benchmark #1: t/helper/test-tool sha1 <foo.rand Time (mean ± σ): 11.744 s ± 0.066 s [User: 10.807 s, System: 0.928 s] Range (min … max): 11.637 s … 11.863 s 10 runs So the unaligned loads don't seem to help much, and actually make things worse. It's possible there are platforms where they provide more benefit, but: - the non-x86 platforms for which we use this code are old and obscure (powerpc and s390). - the main caller that cares about performance is block-sha1. But these days it is rarely used anyway, in favor of sha1dc (which is already much slower, and nobody seems to have cared that much). Let's just drop unaligned versions entirely in the name of simplicity. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-22Merge branch 'hn/refs-trace-backend'Junio C Hamano
Developer support. * hn/refs-trace-backend: refs: add GIT_TRACE_REFS debugging mechanism
2020-09-22Merge branch 'es/format-patch-interdiff-cleanup'Junio C Hamano
"format-patch --range-diff=<prev> <origin>..HEAD" has been taught not to ignore <origin> when <prev> is a single version. * es/format-patch-interdiff-cleanup: format-patch: use 'origin' as start of current-series-range when known diff-lib: tighten show_interdiff()'s interface diff: move show_interdiff() from its own file to diff-lib
2020-09-21Optionally skip linking/copying the built-insJohannes Schindelin
For a long time already, the non-dashed form of the built-ins is the recommended way to write scripts, i.e. it is better to call `git merge [...]` than to call `git-merge [...]`. While Git still supports the dashed form (by hard-linking the `git` executable to the dashed name in `libexec/git-core/`), in practice, it is probably almost irrelevant. However, we *do* care about keeping people's scripts working (even if they were written before the non-dashed form started to be recommended). Keeping this backwards-compatibility is not necessarily cheap, though: even so much as amending the tip commit in a git.git checkout will require re-linking all of those dashed commands. On this developer's laptop, this makes a noticeable difference: $ touch version.c && time make CC version.o AR libgit.a LINK git-bugreport.exe [... 11 similar lines ...] LN/CP git-remote-https.exe LN/CP git-remote-ftp.exe LN/CP git-remote-ftps.exe LINK git.exe BUILTIN git-add.exe [... 123 similar lines ...] BUILTIN all SUBDIR git-gui SUBDIR gitk-git SUBDIR templates LINK t/helper/test-fake-ssh.exe LINK t/helper/test-line-buffer.exe LINK t/helper/test-svn-fe.exe LINK t/helper/test-tool.exe real 0m36.633s user 0m3.794s sys 0m14.141s $ touch version.c && time make SKIP_DASHED_BUILT_INS=1 CC version.o AR libgit.a LINK git-bugreport.exe [... 11 similar lines ...] LN/CP git-remote-https.exe LN/CP git-remote-ftp.exe LN/CP git-remote-ftps.exe LINK git.exe BUILTIN git-receive-pack.exe BUILTIN git-upload-archive.exe BUILTIN git-upload-pack.exe BUILTIN all SUBDIR git-gui SUBDIR gitk-git SUBDIR templates LINK t/helper/test-fake-ssh.exe LINK t/helper/test-line-buffer.exe LINK t/helper/test-svn-fe.exe LINK t/helper/test-tool.exe real 0m23.717s user 0m1.562s sys 0m5.210s Also, `.zip` files do not have any standardized support for hard-links, therefore "zipping up" the executables will result in inflated disk usage. (To keep down the size of the "MinGit" variant of Git for Windows, which is distributed as a `.zip` file, the hard-links are excluded specifically.) In addition to that, some programs that are regularly used to assess disk usage fail to realize that those are hard-links, and heavily overcount disk usage. Most notably, this was the case with Windows Explorer up until the last couple of Windows 10 versions. See e.g. https://github.com/msysgit/msysgit/issues/58. To save on the time needed to hard-link these dashed commands, with the plan to eventually stop shipping with those hard-links on Windows, let's introduce a Makefile knob to skip generating them. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-21msvc: copy the correct `.pdb` files in the Makefile target `install`Johannes Schindelin
There is a hard-coded list of `.pdb` files to copy. But we are about to introduce the `SKIP_DASHED_BUILT_INS` knob in the `Makefile`, which might make this hard-coded list incorrect. Let's switch to a dynamically-generated list instead. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-19Makefile: use git-archive --add-fileRené Scharfe
Add untracked files for the dist target directly using git archive instead of calling tar cr to append them. This reduces the dependency on external tools and gives the untracked files the same access times and user information as tracked ones, integrating them seamlessly. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-19Merge branch 'jc/dist-tarball-tweak'Junio C Hamano
Allow maintainers to tweak $(TAR) invocations done while making distribution tarballs. * jc/dist-tarball-tweak: Makefile: allow extra tweaking of distribution tarball
2020-09-19Merge branch 'pb/clang-json-compilation-database'Junio C Hamano
Developer support. * pb/clang-json-compilation-database: Makefile: add support for generating JSON compilation database
2020-09-09refs: add GIT_TRACE_REFS debugging mechanismHan-Wen Nienhuys
When set in the environment, GIT_TRACE_REFS makes git print operations and results as they flow through the ref storage backend. This helps debug discrepancies between different ref backends. Example: $ GIT_TRACE_REFS="1" ./git branch 15:42:09.769631 refs/debug.c:26 ref_store for .git 15:42:09.769681 refs/debug.c:249 read_raw_ref: HEAD: 0000000000000000000000000000000000000000 (=> refs/heads/ref-debug) type 1: 0 15:42:09.769695 refs/debug.c:249 read_raw_ref: refs/heads/ref-debug: 3a238e539bcdfe3f9eb5010fd218640c1b499f7a (=> refs/heads/ref-debug) type 0: 0 15:42:09.770282 refs/debug.c:233 ref_iterator_begin: refs/heads/ (0x1) 15:42:09.770290 refs/debug.c:189 iterator_advance: refs/heads/b4 (0) 15:42:09.770295 refs/debug.c:189 iterator_advance: refs/heads/branch3 (0) Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-09Makefile: allow extra tweaking of distribution tarballJunio C Hamano
The maintainer's dist rules are used to produce distribution tarballs. They use "$(TAR) cf" and "$(TAR) rf" to produce archives out of a freshly created local installation area, which means that the built product can be affected by maintainer's umask and other local environment. Implementations of "tar" have ways (implementation specific, unfortunately) to force permission bits and other stuff to allow the user to hide these effects coming from the local environment. Teach our Makefile to allow the maintainer to tweak the invocation of the $(TAR) commands by setting TAR_DIST_EXTRA_OPTS. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-08diff: move show_interdiff() from its own file to diff-libEric Sunshine
show_interdiff() is a relatively small function and not likely to grow larger or more complicated. Rather than dedicating an entire source file to it, relocate it to diff-lib.c which houses other "take two things and compare them" functions meant to be re-used but not so low-level as to reside in the core diff implementation. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-06Makefile: add support for generating JSON compilation databasePhilippe Blain
Tools based on LibClang [1] can make use of a 'JSON Compilation Database' [2] that keeps track of the exact options used to compile a set of source files. For example, clangd [3], which is a C language server protocol implementation, can use a JSON compilation database to determine the flags needed to compile a file so it can provide proper editor integration. As a result, editors supporting the language server protocol (such as VS Code, Emacs, or Vim, with suitable plugins) can provide better searching, integration, and refactoring tools. The Clang compiler can generate JSON fragments when compiling [4], using the `-MJ` flag. These JSON fragments (one per compiled source file) can then be concatenated to create the compilation database, commonly called 'compile_commands.json'. Add support to the Makefile for generating these JSON fragments as well as the compilation database itself, if the environment variable 'GENERATE_COMPILATION_DATABASE' is set. If this variable is set, check that $(CC) indeed supports the `-MJ` flag, following what is done for automatic dependencies. All JSON fragments are placed in the 'compile_commands/' directory, and the compilation database 'compile_commands.json' is generated as a dependency of the 'all' target using a `sed` invocation. [1] https://clang.llvm.org/docs/Tooling.html [2] https://clang.llvm.org/docs/JSONCompilationDatabase.html [3] https://clangd.llvm.org/ [4] https://clang.llvm.org/docs/ClangCommandLineReference.html#cmdoption-clang-mj-arg Helped-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-03Merge branch 'jt/lazy-fetch'Junio C Hamano
Updates to on-demand fetching code in lazily cloned repositories. * jt/lazy-fetch: fetch: no FETCH_HEAD display if --no-write-fetch-head fetch-pack: remove no_dependents code promisor-remote: lazy-fetch objects in subprocess fetch-pack: do not lazy-fetch during ref iteration fetch: only populate existing_refs if needed fetch: avoid reading submodule config until needed fetch: allow refspecs specified through stdin negotiator/noop: add noop fetch negotiator
2020-08-27receive-pack: add new proc-receive hookJiang Xin
Git calls an internal `execute_commands` function to handle commands sent from client to `git-receive-pack`. Regardless of what references the user pushes, git creates or updates the corresponding references if the user has write-permission. A contributor who has no write-permission, cannot push to the repository directly. So, the contributor has to write commits to an alternate location, and sends pull request by emails or by other ways. We call this workflow as a distributed workflow. It would be more convenient to work in a centralized workflow like what Gerrit provided for some cases. For example, a read-only user who cannot push to a branch directly can run the following `git push` command to push commits to a pseudo reference (has a prefix "refs/for/", not "refs/heads/") to create a code review. git push origin \ HEAD:refs/for/<branch-name>/<session> The `<branch-name>` in the above example can be as simple as "master", or a more complicated branch name like "foo/bar". The `<session>` in the above example command can be the local branch name of the client side, such as "my/topic". We cannot implement a centralized workflow elegantly by using "pre-receive" + "post-receive", because Git will call the internal function "execute_commands" to create references (even the special pseudo reference) between these two hooks. Even though we can delete the temporarily created pseudo reference via the "post-receive" hook, having a temporary reference is not safe for concurrent pushes. So, add a filter and a new handler to support this kind of workflow. The filter will check the prefix of the reference name, and if the command has a special reference name, the filter will turn a specific field (`run_proc_receive`) on for the command. Commands with this filed turned on will be executed by a new handler (a hook named "proc-receive") instead of the internal `execute_commands` function. We can use this "proc-receive" command to create pull requests or send emails for code review. Suggested by Junio, this "proc-receive" hook reads the commands, push-options (optional), and send result using a protocol in pkt-line format. In the following example, the letter "S" stands for "receive-pack" and letter "H" stands for the hook. # Version and features negotiation. S: PKT-LINE(version=1\0push-options atomic...) S: flush-pkt H: PKT-LINE(version=1\0push-options...) H: flush-pkt # Send commands from server to the hook. S: PKT-LINE(<old-oid> <new-oid> <ref>) S: ... ... S: flush-pkt # Send push-options only if the 'push-options' feature is enabled. S: PKT-LINE(push-option) S: ... ... S: flush-pkt # Receive result from the hook. # OK, run this command successfully. H: PKT-LINE(ok <ref>) # NO, I reject it. H: PKT-LINE(ng <ref> <reason>) # Fall through, let 'receive-pack' to execute it. H: PKT-LINE(ok <ref>) H: PKT-LINE(option fall-through) # OK, but has an alternate reference. The alternate reference name # and other status can be given in options H: PKT-LINE(ok <ref>) H: PKT-LINE(option refname <refname>) H: PKT-LINE(option old-oid <old-oid>) H: PKT-LINE(option new-oid <new-oid>) H: PKT-LINE(option forced-update) H: ... ... H: flush-pkt After receiving a command, the hook will execute the command, and may create/update different reference. For example, a command for a pseudo reference "refs/for/master/topic" may create/update different reference such as "refs/pull/123/head". The alternate reference name and other status are given in option lines. The list of commands returned from "proc-receive" will replace the relevant commands that are sent from user to "receive-pack", and "receive-pack" will continue to run the "execute_commands" function and other routines. Finally, the result of the execution of these commands will be reported to end user. The reporting function from "receive-pack" to "send-pack" will be extended in latter commit just like what the "proc-receive" hook reports to "receive-pack". Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-18negotiator/noop: add noop fetch negotiatorJonathan Tan
Add a noop fetch negotiator. This is introduced to allow partial clones to skip the unneeded negotiation step when fetching missing objects using a "git fetch" subprocess. (The implementation of spawning a "git fetch" subprocess will be done in a subsequent patch.) But this can also be useful for end users, e.g. as a blunt fix for object corruption. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13drop vcs-svn experimentJeff King
The code in vcs-svn was started in 2010 as an attempt to build a remote-helper for interacting with svn repositories (as opposed to git-svn). However, we never got as far as shipping a mature remote helper, and the last substantive commit was e99d012a6bc in 2012. We do have a git-remote-testsvn, and it is even installed as part of "make install". But given the name, it seems unlikely to be used by anybody (you'd have to explicitly "git clone testsvn::$url", and there have been zero mentions of that on the mailing list since 2013, and even that includes the phrase "you might need to hack a bit to get it working properly"[1]). We also ship contrib/svn-fe, which builds on the vcs-svn work. However, it does not seem to build out of the box for me, as the link step misses some required libraries for using libgit.a. Curiously, the original build breakage bisects for me to eff80a9fd9 (Allow custom "comment char", 2013-01-16), which seems unrelated. There was an attempt to fix it in da011cb0e7 (contrib/svn-fe: fix Makefile, 2014-08-28), but on my system that only switches the error message. So it seems like the result is not really usable by anybody in practice. It would be wonderful if somebody wanted to pick up the topic again, and potentially it's worth carrying around for that reason. But the flip side is that people doing tree-wide operations have to deal with this code. And you can see the list with (replace "HEAD" with this commit as appropriate): { echo "--" git diff-tree --diff-filter=D -r --name-only HEAD^ HEAD } | git log --no-merges --oneline e99d012a6bc.. --stdin which shows 58 times somebody had to deal with the code, generally due to a compile or test failure, or a tree-wide style fix or API change. Let's drop it and let anybody who wants to pick it up do so by resurrecting it from the git history. As a bonus, this also reduces the size of a stripped installation of Git from 21MB to 19MB. [1] https://lore.kernel.org/git/CALkWK0mPHzKfzFKKpZkfAus3YVC9NFYDbFnt+5JQYVKipk3bQQ@mail.gmail.com/ Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13make git-fast-import a builtinJeff King
There's no reason that git-fast-import benefits from being a separate binary. And as it links against libgit.a, it has a non-trivial disk footprint. Let's make it a builtin, which reduces the size of a stripped installation from 22MB to 21MB. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13make git-bugreport a builtinJeff King
There's no reason that bugreport has to be a separate binary. And since it links against libgit.a, it has a rather large disk footprint. Let's make it a builtin, which reduces the size of a stripped installation from 24MB to 22MB. This also simplifies our Makefile a bit. And we can take advantage of builtin niceties like RUN_SETUP_GENTLY. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13make credential helpers builtinsJeff King
There's no real reason for credential helpers to be separate binaries. I did them this way originally under the notion that helper don't _need_ to be part of Git, and so can be built totally separately (and indeed, the ones in contrib/credential are). But the ones in our main Makefile build on libgit.a, and the resulting binaries are reasonably large. We can slim down our total disk footprint by just making them builtins. This reduces the size of: make strip install from 29MB to 24MB on my Debian system. Note that credential-cache can't operate without support for Unix sockets. Currently we just don't build it at all when NO_UNIX_SOCKETS is set. We could continue that with conditionals in the Makefile and our list of builtins. But instead, let's build a dummy implementation that dies with an informative message. That has two advantages: - it's simpler, because the conditional bits are all kept inside the credential-cache source - a user who is expecting it to exist will be told _why_ they can't use it, rather than getting the "credential-cache is not a git command" error which makes it look like the Git install is broken. Note that our dummy implementation does still respond to "-h" in order to appease t0012 (and this may be a little friendlier for users, as well). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-13Makefile: drop builtins from MSVC pdb listJeff King
Over the years some more programs have become builtins, but nobody updated this MSVC-specific section of the file (which specifically says that it should not include builtins). Let's bring it up to date. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-28strvec: rename files from argv-array to strvecJeff King
This requires updating #include lines across the code-base, but that's all fairly mechanical, and was done with: git ls-files '*.c' '*.h' | xargs perl -i -pe 's/argv-array.h/strvec.h/' Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-02Merge branch 'lo/sparse-universal-zero-init'Junio C Hamano
We've adopted a convention that any on-stack structure can be initialized to have zero values in all fields with "= { 0 }", even when the first field happens to be a pointer, but sparse complained that a null pointer should be spelled NULL for a long time. Start using -Wno-universal-initializer option to squelch it. * lo/sparse-universal-zero-init: sparse: allow '{ 0 }' to be used without warnings
2020-05-24sparse: allow '{ 0 }' to be used without warningsLuc Van Oostenryck
In standard C, '{ 0 }' can be used as an universal zero-initializer. However, Sparse complains if this is used on a type where the first member (possibly nested) is a pointer since Sparse purposely wants to warn when '0' is used to initialize a pointer type. Legitimaly, it's desirable to be able to use '{ 0 }' as an idiom without these warnings [1,2]. To allow this, an option have now been added to Sparse: 537e3e2dae univ-init: conditionally accept { 0 } without warnings So, add this option to the SPARSE_FLAGS variable. Note: The option have just been added to Sparse. So, to benefit now from this patch it's needed to use the latest Sparse source from kernel.org. The option will simply be ignored by older versions of Sparse. [1] https://lore.kernel.org/r/e6796c60-a870-e761-3b07-b680f934c537@ramsayjones.plus.com [2] https://lore.kernel.org/r/xmqqd07xem9l.fsf@gitster.c.googlers.com Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-05-20Merge branch 'cb/no-more-gmtime'Junio C Hamano
Code clean-up by removing a compatibility implementation of a function we no longer use. * cb/no-more-gmtime: compat: remove gmtime
2020-05-14compat: remove gmtimeCarlo Marcelo Arenas Belón
ccd469450a (date.c: switch to reentrant {gm,local}time_r, 2019-11-28) removes the only gmtime() call we had and moves to gmtime_r() which doesn't have the same portability problems. Remove the compat gmtime code since it is no longer needed, and confirm by successfull running t4212 in FreeBSD 9.3 amd64 (the oldest I could get a hold off). Further work might be needed to ensure 32bit time_t systems (like FreeBSD i386) will handle correctly the overflows tested in t4212, but that is orthogonal to this change, and it doesn't change the current behaviour as neither gmtime() or gmtime_r() will ever return NULL on those systems because time_t is unsigned. Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-05-01Merge branch 'es/bugreport'Junio C Hamano
The "bugreport" tool. * es/bugreport: bugreport: drop extraneous includes bugreport: add compiler info bugreport: add uname info bugreport: gather git version and build info bugreport: add tool to generate debugging info help: move list_config_help to builtin/help
2020-05-01Merge branch 'gs/commit-graph-path-filter'Junio C Hamano
Introduce an extension to the commit-graph to make it efficient to check for the paths that were modified at each commit using Bloom filters. * gs/commit-graph-path-filter: bloom: ignore renames when computing changed paths commit-graph: add GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS test flag t4216: add end to end tests for git log with Bloom filters revision.c: add trace2 stats around Bloom filter usage revision.c: use Bloom filters to speed up path based revision walks commit-graph: add --changed-paths option to write subcommand commit-graph: reuse existing Bloom filters during write commit-graph: write Bloom filters to commit graph file commit-graph: examine commits by generation number commit-graph: examine changed-path objects in pack order commit-graph: compute Bloom filters for changed paths diff: halt tree-diff early after max_changes bloom.c: core Bloom filter implementation for changed paths. bloom.c: introduce core Bloom filter constructs bloom.c: add the murmur3 hash implementation commit-graph: define and use MAX_NUM_CHUNKS
2020-05-01Merge branch 'jk/build-with-right-curl'Junio C Hamano
The build procedure did not use the libcurl library and its include files correctly for a custom-built installation. * jk/build-with-right-curl: Makefile: avoid running curl-config unnecessarily Makefile: use curl-config --cflags Makefile: avoid running curl-config multiple times
2020-04-29Merge branch 'dl/merge-autostash'Junio C Hamano
"git merge" learns the "--autostash" option. * dl/merge-autostash: (22 commits) pull: pass --autostash to merge t5520: make test_pull_autostash() accept expect_parent_num merge: teach --autostash option sequencer: implement apply_autostash_oid() sequencer: implement save_autostash() sequencer: unlink autostash in apply_autostash() sequencer: extract perform_autostash() from rebase rebase: generify create_autostash() rebase: extract create_autostash() reset: extract reset_head() from rebase rebase: generify reset_head() rebase: use apply_autostash() from sequencer.c sequencer: rename stash_sha1 to stash_oid sequencer: make apply_autostash() accept a path rebase: use read_oneliner() sequencer: make read_oneliner() extern sequencer: configurably warn on non-existent files sequencer: make read_oneliner() accept flags sequencer: make file exists check more efficient sequencer: stop leaking buf ...
2020-04-28Merge branch 'dl/libify-a-few'Junio C Hamano
Code in builtin/*, i.e. those can only be called from within built-in subcommands, that implements bulk of a couple of subcommands have been moved to libgit.a so that they could be used by others. * dl/libify-a-few: Lib-ify prune-packed Lib-ify fmt-merge-msg
2020-04-28Merge branch 'ma/doc-discard-docbook-xsl-1.73'Junio C Hamano
Raise the minimum required version of docbook-xsl package to 1.74, as 1.74.0 was from late 2008, which is more than 10 years old, and drop compatibility cruft from our documentation suite. * ma/doc-discard-docbook-xsl-1.73: user-manual.conf: don't specify [listingblock] INSTALL: drop support for docbook-xsl before 1.74 manpage-normal.xsl: fold in manpage-base.xsl manpage-bold-literal.xsl: stop using git.docbook.backslash Doc: drop support for docbook-xsl before 1.73.0 Doc: drop support for docbook-xsl before 1.72.0 Doc: drop support for docbook-xsl before 1.71.1
2020-04-22Merge branch 'jk/oid-array-cleanups'Junio C Hamano
Code cleanup. * jk/oid-array-cleanups: oidset: stop referring to sha1-array ref-filter: stop referring to "sha1 array" bisect: stop referring to sha1_array test-tool: rename sha1-array to oid-array oid_array: rename source file from sha1-array oid_array: use size_t for iteration oid_array: use size_t for count and allocation
2020-04-16bugreport: add tool to generate debugging infoEmily Shaffer
Teach Git how to prompt the user for a good bug report: reproduction steps, expected behavior, and actual behavior. Later, Git can learn how to collect some diagnostic information from the repository. If users can send us a well-written bug report which contains diagnostic information we would otherwise need to ask the user for, we can reduce the number of question-and-answer round trips between the reporter and the Git contributor. Users may also wish to send a report like this to their local "Git expert" if they have put their repository into a state they are confused by. Signed-off-by: Emily Shaffer <emilyshaffer@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-04-16help: move list_config_help to builtin/helpEmily Shaffer
Starting in 3ac68a93fd2, help.o began to depend on builtin/branch.o, builtin/clean.o, and builtin/config.o. This meant that help.o was unusable outside of the context of the main Git executable. To make help.o usable by other commands again, move list_config_help() into builtin/help.c (where it makes sense to assume other builtin libraries are present). When command-list.h is included but a member is not used, we start to hear a compiler warning. Since the config list is generated in a fairly different way than the command list, and since commands and config options are semantically different, move the config list into its own header and move the generator into its own script and build rule. For reasons explained in 976aaedc (msvc: add a Makefile target to pre-generate the Visual Studio solution, 2019-07-29), some build artifacts we consider non-source files cannot be generated in the Visual Studio environment, and we already have some Makefile tweaks to help Visual Studio to use generated command-list.h header file. Do the same to a new generated file, config-list.h, introduced by this change. Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
2020-04-10reset: extract reset_head() from rebaseDenton Liu
Continue the process of lib-ifying the autostash code. In a future commit, this will be used to implement `--autostash` in other builtins. This patch is best viewed with `--color-moved`. Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-04-05Makefile: avoid running curl-config unnecessarilyJeff King
Commit 94a88e2524 (Makefile: avoid running curl-config multiple times, 2020-03-26) put the call to $(CURL_CONFIG) into a "simple" variable which is expanded immediately, rather than expanding it each time it's needed. However, that also means that we expand it whenever the Makefile is parsed, whether we need it or not. This is wasteful, but also breaks the ci/test-documentation.sh job, as it does not have curl at all and complains about the extra messages to stderr. An easy way to see it is just: $ make CURL_CONFIG=does-not-work check-builtins make: does-not-work: Command not found make: does-not-work: Command not found GIT_VERSION = 2.26.0.108.gb3f3f45f29 make: does-not-work: Command not found make: does-not-work: Command not found ./check-builtins.sh We can get the best of both worlds if we're willing to accept a little Makefile hackery. Courtesy of the article at: http://make.mad-scientist.net/deferred-simple-variable-expansion/ this patch uses a lazily-evaluated recursive variable which replaces its contents with an immediately assigned simple one on first use. Reported-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-30test-tool: rename sha1-array to oid-arrayJeff King
This matches the actual data structure name, as well as the source file that contains the code we're testing. The test scripts need updating to use the new name, as well. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-30oid_array: rename source file from sha1-arrayJeff King
We renamed the actual data structure in 910650d2f8 (Rename sha1_array to oid_array, 2017-03-31), but the file is still called sha1-array. Besides being slightly confusing, it makes it more annoying to grep for leftover occurrences of "sha1" in various files, because the header is included in so many places. Let's complete the transition by renaming the source and header files (and fixing up a few comment references). I kept the "-" in the name, as that seems to be our style; cf. fc1395f4a4 (sha1_file.c: rename to use dash in file name, 2018-04-10). We also have oidmap.h and oidset.h without any punctuation, but those are "struct oidmap" and "struct oidset" in the code. We _could_ make this "oidarray" to match, but somehow it looks uglier to me because of the length of "array" (plus it would be a very invasive patch for little gain). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-30bloom.c: add the murmur3 hash implementationGarima Singh
In preparation for computing changed paths Bloom filters, implement the Murmur3 hash algorithm as described in [1]. It hashes the given data using the given seed and produces a uniformly distributed hash value. [1] https://en.wikipedia.org/wiki/MurmurHash#Algorithm Helped-by: Derrick Stolee <dstolee@microsoft.com> Helped-by: Szeder Gábor <szeder.dev@gmail.com> Reviewed-by: Jakub Narębski <jnareb@gmail.com> Signed-off-by: Garima Singh <garima.singh@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-29Doc: drop support for docbook-xsl before 1.73.0Martin Ågren
Drop the DOCBOOK_XSL_172 config knob, which was needed with docbook-xsl 1.72 (but neither 1.71 nor 1.73). Version 1.73.0 is more than twelve years old. Together with the last few commits, we are now at a point where we don't have any Makefile knobs to cater to old/broken versions of docbook-xsl. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-29Doc: drop support for docbook-xsl before 1.72.0Martin Ågren
docbook-xsl 1.72.0 is thirteen years old. Drop the ASCIIDOC_ROFF knob which was needed to support 1.68.1 - 1.71.1. The next commit will increase the required/assumed version further. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-27Makefile: use curl-config --cflagsJeff King
We add the result of "curl-config --libs" when linking curl programs, but we never bother calling "curl-config --cflags". Presumably nobody noticed because: - a system libcurl installed into /usr/include/curl wouldn't need any flags ("/usr/include" is already in the search path, and the #include lines all look <curl/curl.h>, etc). - using CURLDIR sets up both the includes and the library path However, if you prefer CURL_CONFIG to CURLDIR, something simple like: make CURL_CONFIG=/path/to/curl-config doesn't work. We'd link against the libcurl specified by that program, but not find its header files when compiling. Let's invoke "curl-config --cflags" similar to the way we do for "--libs". Note that we'll feed the result into BASIC_CFLAGS. The rest of the Makefile doesn't distinguish which files need curl support during compilation and which do not. That should be OK, though. At most this should be adding a "-I" directive, and this is how CURLDIR already behaves. And since we follow the immediate-variable pattern from CURL_LDFLAGS, we won't accidentally invoke curl-config once per compilation. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-27Makefile: avoid running curl-config multiple timesJeff King
If the user hasn't set the CURL_LDFLAGS Makefile variable, we invoke curl-config like this: CURL_LIBCURL += $(shell $(CURL_CONFIG) --libs) Because the shell function is run when the value is expanded, we invoke curl-config each time we need to link something (which generally ends up being four times for a full build). Instead, let's use an immediate Makefile variable, which only needs expanding once. We can't combine that with the existing "+=", but since we only do this when CURL_LDFLAGS is undefined, we can just set that variable. That also allows us to simplify our conditional a bit, since both sides will then put the result into CURL_LIBCURL. While we're touching it, let's fix the indentation to match the nearby code (we're inside an outer conditional, so everything else is indented one level). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>