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2022-03-13Merge branch 'ab/plug-random-leaks'Libravatar Junio C Hamano21-62/+113
Plug random memory leaks. * ab/plug-random-leaks: repository.c: free the "path cache" in repo_clear() range-diff: plug memory leak in read_patches() range-diff: plug memory leak in common invocation lockfile API users: simplify and don't leak "path" commit-graph: stop fill_oids_from_packs() progress on error and free() commit-graph: fix memory leak in misused string_list API submodule--helper: fix trivial leak in module_add() transport: stop needlessly copying bundle header references bundle: call strvec_clear() on allocated strvec remote-curl.c: free memory in cmd_main() urlmatch.c: add and use a *_release() function diff.c: free "buf" in diff_words_flush() merge-base: free() allocated "struct commit **" list index-pack: fix memory leaks
2022-03-13Merge branch 'nj/read-tree-doc-reffix'Libravatar Junio C Hamano1-2/+2
Documentation mark-up fix. * nj/read-tree-doc-reffix: Documentation: git-read-tree: separate links using commas
2022-03-13Merge branch 'ps/fetch-atomic-fixup'Libravatar Junio C Hamano1-15/+5
Test simplification. * ps/fetch-atomic-fixup: t5503: simplify setup of test which exercises failure of backfill
2022-03-13Merge branch 'fs/gpgsm-update'Libravatar Junio C Hamano3-8/+15
Newer version of GPGSM changed its output in a backward incompatible way to break our code that parses its output. It also added more processes our tests need to kill when cleaning up. Adjustments have been made to accommodate these changes. * fs/gpgsm-update: t/lib-gpg: kill all gpg components, not just gpg-agent t/lib-gpg: reload gpg components after updating trustlist gpg-interface/gpgsm: fix for v2.3
2022-03-13Merge branch 'gc/parse-tree-indirect-errors'Libravatar Junio C Hamano2-3/+12
Check the return value from parse_tree_indirect() to turn segfaults into calls to die(). * gc/parse-tree-indirect-errors: checkout, clone: die if tree cannot be parsed
2022-03-13Merge branch 'en/merge-ort-align-verbosity-with-recursive'Libravatar Junio C Hamano1-2/+3
Align the level of verbose output from the ort backend during inner merge to that of the recursive backend. * en/merge-ort-align-verbosity-with-recursive: merge-ort: exclude messages from inner merges by default
2022-03-13Merge branch 'ab/make-optim-noop'Libravatar Junio C Hamano10-160/+165
Makefile refactoring with a bit of suffixes rule stripping to optimize the runtime overhead. * ab/make-optim-noop: Makefiles: add and use wildcard "mkdir -p" template Makefile: add "$(QUIET)" boilerplate to shared.mak Makefile: move $(comma), $(empty) and $(space) to shared.mak Makefile: move ".SUFFIXES" rule to shared.mak Makefile: define $(LIB_H) in terms of $(FIND_SOURCE_FILES) Makefile: disable GNU make built-in wildcard rules Makefiles: add "shared.mak", move ".DELETE_ON_ERROR" to it scalar Makefile: use "The default target of..." pattern
2022-03-13Merge branch 'ps/fetch-atomic'Libravatar Junio C Hamano5-61/+262
"git fetch" can make two separate fetches, but ref updates coming from them were in two separate ref transactions under "--atomic", which has been corrected. * ps/fetch-atomic: fetch: make `--atomic` flag cover pruning of refs fetch: make `--atomic` flag cover backfilling of tags refs: add interface to iterate over queued transactional updates fetch: report errors when backfilling tags fails fetch: control lifecycle of FETCH_HEAD in a single place fetch: backfill tags before setting upstream fetch: increase test coverage of fetches
2022-03-09The tenth batchLibravatar Junio C Hamano1-1/+27
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-09Merge branch 'ab/help-fixes'Libravatar Junio C Hamano5-24/+187
Updates to how command line options to "git help" are handled. * ab/help-fixes: help: don't print "\n" before single-section output help: add --no-[external-commands|aliases] for use with --all help: error if [-a|-g|-c] and [-i|-m|-w] are combined help: correct usage & behavior of "git help --all" help: note the option name on option incompatibility help.c: split up list_all_cmds_help() function help tests: test "git" and "git help [-a|-g] spacing help.c: use puts() instead of printf{,_ln}() for consistency help doc: add missing "]" to "[-a|--all]"
2022-03-09Merge branch 'ab/c99-variadic-macros'Libravatar Junio C Hamano8-246/+65
Remove the escape hatch we added when we introduced the weather balloon to use variadic macros unconditionally, to make it official that we now have a hard dependency on the feature. * ab/c99-variadic-macros: C99: remove hardcoded-out !HAVE_VARIADIC_MACROS code git-compat-util.h: clarify GCC v.s. C99-specific in comment
2022-03-09Merge branch 'hn/reftable-no-empty-keys'Libravatar Junio C Hamano7-19/+136
General clean-up in reftable implementation, including clarification of the API documentation, tightening the code to honor documented length limit, etc. * hn/reftable-no-empty-keys: reftable: rename writer_stats to reftable_writer_stats reftable: add test for length of disambiguating prefix reftable: ensure that obj_id_len is >= 2 on writing reftable: avoid writing empty keys at the block layer reftable: add a test that verifies that writing empty keys fails reftable: reject 0 object_id_len Documentation: object_id_len goes up to 31
2022-03-09Merge branch 'jc/cat-file-batch-commands'Libravatar Junio C Hamano3-22/+333
"git cat-file" learns "--batch-command" mode, which is a more flexible interface than the existing "--batch" or "--batch-check" modes, to allow different kinds of inquiries made. * jc/cat-file-batch-commands: cat-file: add --batch-command mode cat-file: add remove_timestamp helper cat-file: introduce batch_mode enum to replace print_contents cat-file: rename cmdmode to transform_mode
2022-03-09Merge branch 'pw/xdiff-alloc-fail'Libravatar Junio C Hamano4-48/+51
Improve failure case behaviour of xdiff library when memory allocation fails. * pw/xdiff-alloc-fail: xdiff: handle allocation failure when merging xdiff: refactor a function xdiff: handle allocation failure in patience diff xdiff: fix a memory leak
2022-03-09Merge branch 'en/present-despite-skipped'Libravatar Junio C Hamano19-128/+311
In sparse-checkouts, files mis-marked as missing from the working tree could lead to later problems. Such files were hard to discover, and harder to correct. Automatically detecting and correcting the marking of such files has been added to avoid these problems. * en/present-despite-skipped: repo_read_index: add config to expect files outside sparse patterns Accelerate clear_skip_worktree_from_present_files() by caching Update documentation related to sparsity and the skip-worktree bit repo_read_index: clear SKIP_WORKTREE bit from files present in worktree unpack-trees: fix accidental loss of user changes t1011: add testcase demonstrating accidental loss of user modifications
2022-03-06The ninth batchLibravatar Junio C Hamano1-0/+21
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-06Merge branch 'jt/ls-files-stage-recurse'Libravatar Junio C Hamano3-4/+20
Many output modes of "ls-files" do not work with its "--recurse-submodules" option, but the "-s" mode has been taught to work with it. * jt/ls-files-stage-recurse: ls-files: support --recurse-submodules --stage
2022-03-06Merge branch 'gc/stash-on-branch-with-multi-level-name'Libravatar Junio C Hamano2-1/+12
"git checkout -b branch/with/multi/level/name && git stash" only recorded the last level component of the branch name, which has been corrected. * gc/stash-on-branch-with-multi-level-name: stash: strip "refs/heads/" with skip_prefix
2022-03-06Merge branch 'ah/advice-switch-requires-detach-to-detach'Libravatar Junio C Hamano5-11/+35
The error message given by "git switch HEAD~4" has been clarified to suggest the "--detach" option that is required. * ah/advice-switch-requires-detach-to-detach: switch: mention the --detach option when dying due to lack of a branch
2022-03-06Merge branch 'ab/c99-designated-initializers'Libravatar Junio C Hamano11-183/+193
Use designated initializers we started using in mid 2017 in more parts of the codebase that are relatively quiescent. * ab/c99-designated-initializers: fast-import.c: use designated initializers for "partial" struct assignments refspec.c: use designated initializers for "struct refspec_item" convert.c: use designated initializers for "struct stream_filter*" userdiff.c: use designated initializers for "struct userdiff_driver" archive-*.c: use designated initializers for "struct archiver" object-file: use designated initializers for "struct git_hash_algo" trace2: use designated initializers for "struct tr2_dst" trace2: use designated initializers for "struct tr2_tgt" imap-send.c: use designated initializers for "struct imap_server_conf"
2022-03-06Merge branch 'mc/index-pack-report-max-size'Libravatar Junio C Hamano2-2/+14
When "index-pack" dies due to incoming data exceeding the maximum allowed input size, include the value of the limit in the error message. * mc/index-pack-report-max-size: index-pack: clarify the breached limit
2022-03-06Merge branch 'ac/usage-string-fixups'Libravatar Junio C Hamano5-9/+9
Usage-string normalization. * ac/usage-string-fixups: amend remaining usage strings according to style guide
2022-03-06Merge branch 'ab/test-leak-diag'Libravatar Junio C Hamano1-10/+40
Random test-framework clean-up. * ab/test-leak-diag: test-lib: add "fast_unwind_on_malloc=0" to LSAN_OPTIONS test-lib: make $GIT_BUILD_DIR an absolute path test-lib: correct and assert TEST_DIRECTORY overriding test-lib: add GIT_SAN_OPTIONS, inherit [AL]SAN_OPTIONS
2022-03-06Merge branch 'ab/hook-tests'Libravatar Junio C Hamano1-41/+53
Test modernization. * ab/hook-tests: hook tests: use a modern style for "pre-push" tests hook tests: test for exact "pre-push" hook input
2022-03-06Merge branch 'en/merge-ort-plug-leaks'Libravatar Junio C Hamano1-19/+17
Leakfix. * en/merge-ort-plug-leaks: merge-ort: fix small memory leak in unique_path() merge-ort: fix small memory leak in detect_and_process_renames()
2022-03-06Merge branch 'ds/worktree-docs'Libravatar Junio C Hamano2-197/+209
Tighten the language around "working tree" and "worktree" in the docs. * ds/worktree-docs: worktree: use 'worktree' over 'working tree' worktree: use 'worktree' over 'working tree' worktree: use 'worktree' over 'working tree' worktree: use 'worktree' over 'working tree' worktree: use 'worktree' over 'working tree' worktree: use 'worktree' over 'working tree' worktree: use 'worktree' over 'working tree' worktree: extract checkout_worktree() worktree: extract copy_sparse_checkout() worktree: extract copy_filtered_worktree_config() worktree: combine two translatable messages
2022-03-06Merge branch 'jc/rerere-train-modernise'Libravatar Junio C Hamano1-1/+1
Small modernization of the rerere-train script (in contrib/). * jc/rerere-train-modernise: rerere-train: two fixes to the use of "git show -s"
2022-03-06Merge branch 'rs/bisect-executable-not-found'Libravatar Junio C Hamano4-14/+125
A not-so-common mistake is to write a script to feed "git bisect run" without making it executable, in which case all tests will exit with 126 or 127 error codes, even on revisions that are marked as good. Try to recognize this situation and stop iteration early. * rs/bisect-executable-not-found: bisect--helper: double-check run command on exit code 126 and 127 bisect: document run behavior with exit codes 126 and 127 bisect--helper: release strbuf and strvec on run error bisect--helper: report actual bisect_state() argument on error
2022-03-06Merge branch 'en/sparse-checkout-fixes'Libravatar Junio C Hamano2-7/+161
Further polishing of "git sparse-checkout". * en/sparse-checkout-fixes: sparse-checkout: reject arguments in cone-mode that look like patterns sparse-checkout: error or warn when given individual files sparse-checkout: pay attention to prefix for {set, add} sparse-checkout: correctly set non-cone mode when expected sparse-checkout: correct reapply's handling of options
2022-03-06Merge branch 'cg/t3903-modernize'Libravatar Junio C Hamano2-9/+41
Test modernization. * cg/t3903-modernize: tests: make the code more readable tests: allow testing if a path is truly a file or a directory t/t3903-stash.sh: replace test [-d|-f] with test_path_is_*
2022-03-04repository.c: free the "path cache" in repo_clear()Libravatar Ævar Arnfjörð Bjarmason3-15/+29
The "struct path_cache" added in 102de880d24 (path.c: migrate global git_path_* to take a repository argument, 2018-05-17) is only used directly by code in repository.[ch] (but populated in path.[ch]). Let's move this code to repository.[ch], and stop leaking this memory when we run repo_clear(). To avoid the cast change it from a "const char *" to a "char *". This also removes the "PATH_CACHE_INIT" macro, which has never been used for anything. For the "struct repository" we already make a hard assumption that it (and "the_repository") can be identically initialized by making it a "static" variable, so making use of a "PATH_CACHE_INIT" somewhere would have been confusing. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04range-diff: plug memory leak in read_patches()Libravatar Ævar Arnfjörð Bjarmason1-17/+12
Amend code added in d9c66f0b5bf (range-diff: first rudimentary implementation, 2018-08-13) to use a "goto cleanup" pattern. This makes for less code, and frees memory that we'd previously leak. The reason for changing free(util) to FREE_AND_NULL(util) is because at the end of the function we append the contents of "util" to a "struct string_list" if it's non-NULL. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04range-diff: plug memory leak in common invocationLibravatar Ævar Arnfjörð Bjarmason3-1/+9
Create a public release_patch() version of the private free_patch() function added in 13b5af22f39 (apply: move libified code from builtin/apply.c to apply.{c,h}, 2016-04-22). Unlike the existing function this one doesn't free() the "struct patch" itself, so we can use it for variables on the stack. Use it in range-diff.c to fix a memory leak in common range-diff invocations, e.g.: git -P range-diff origin/master origin/next origin/seen Would emit several errors when compiled with SANITIZE=leak, but now runs cleanly. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04lockfile API users: simplify and don't leak "path"Libravatar Ævar Arnfjörð Bjarmason2-2/+3
Fix a memory leak in code added in 6c622f9f0bb (commit-graph: write commit-graph chains, 2019-06-18). We needed to free the "lock_name" if we encounter errors, and the "graph_name" after we'd run unlink() on it. For the case of write_commit_graph_file() refactoring the code to free the "lock_name" after we were done using the "struct lock_file lk" would have made the control flow more complex. Luckily we can free the "lock_file" right after the hold_lock_file_for_update() call, if it makes use of "path" at all it'll have copied its contents to a "struct strbuf" of its own. While I'm at it let's fix code added in fb10ca5b543 (sparse-checkout: write using lockfile, 2019-11-21) in write_patterns_and_update() to avoid the same complexity that I thought I needed when I wrote the initial fix for write_commit_graph_file(). We can free the "sparse_filename" right after calling hold_lock_file_for_update(), we don't need to wait until we're exiting the function to do so. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04commit-graph: stop fill_oids_from_packs() progress on error and free()Libravatar Ævar Arnfjörð Bjarmason1-5/+7
Fix a bug in fill_oids_from_packs(), we should always stop_progress(), but did not do so if we returned an error here. This also plugs a memory leak in those cases by releasing the two "struct strbuf" variables the function uses. While I'm at it stop hardcoding "-1" here and just use the return value of error() instead, which happens to be "-1". Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04commit-graph: fix memory leak in misused string_list APILibravatar Ævar Arnfjörð Bjarmason3-6/+6
When this code was migrated to the string_list API in d88b14b3fd6 (commit-graph: use string-list API for input, 2018-06-27) it was made to use used both STRING_LIST_INIT_NODUP and a strbuf_detach() pattern. Those should not be used together if string_list_clear() is expected to free the memory, instead we need to either use STRING_LIST_INIT_DUP with a string_list_append_nodup(), or a STRING_LIST_INIT_NODUP and manually fiddle with the "strdup_strings" member before calling string_list_clear(). Let's do the former. Since "strdup_strings = 1" is set now other code might be broken by relying on "pack_indexes" not to duplicate it strings, but that doesn't happen. When we pass this down to write_commit_graph() that code uses the "struct string_list" without modifying it. Let's add a "const" to the variable to have the compiler enforce that assumption. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04submodule--helper: fix trivial leak in module_add()Libravatar Ævar Arnfjörð Bjarmason1-1/+4
Fix a memory leak in code added in a6226fd772b (submodule--helper: convert the bulk of cmd_add() to C, 2021-08-10). If "realrepo" isn't a copy of the "repo" member we should free() it. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04transport: stop needlessly copying bundle header referencesLibravatar Ævar Arnfjörð Bjarmason1-9/+16
Amend the logic added in fddf2ebe388 (transport: teach all vtables to allow fetch first, 2019-08-21) and save ourselves pointless work in fetch_refs_from_bundle(). The fetch_refs_from_bundle() caller doesn't care about the "struct ref *result" return value of get_refs_from_bundle(), and doesn't need any of the work we were doing in looping over the "data->header.references" in get_refs_from_bundle(). So this change saves us work, and also fixes a memory leak that we had when called from fetch_refs_from_bundle(). The other caller of get_refs_from_bundle() is the "get_refs_list" member we set up for the "struct transport_vtable bundle_vtable". That caller does care about the "struct ref *result" return value. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04bundle: call strvec_clear() on allocated strvecLibravatar Ævar Arnfjörð Bjarmason1-0/+1
Fixing this small memory leak in cmd_bundle_create() gets "t5607-clone-bundle.sh" closer to passing under SANITIZE=leak. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04remote-curl.c: free memory in cmd_main()Libravatar Ævar Arnfjörð Bjarmason1-4/+8
Plug a trivial memory leak in code added in a2d725b7bdf (Use an external program to implement fetching with curl, 2009-08-05). To do this have the cmd_main() use a "goto cleanup" pattern, and to return an error of 1 unless we can fall through to the http_cleanup() at the end. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04urlmatch.c: add and use a *_release() functionLibravatar Ævar Arnfjörð Bjarmason4-1/+8
Plug a memory leak in credential_apply_config() by adding and using a new urlmatch_config_release() function. This just does a string_list_clear() on the "vars" member. This finished up work on normalizing the init/free pattern in this API, started in 73ee449bbf2 (urlmatch.[ch]: add and use URLMATCH_CONFIG_INIT, 2021-10-01). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04diff.c: free "buf" in diff_words_flush()Libravatar Ævar Arnfjörð Bjarmason1-0/+1
Amend the freeing logic added in e6e045f8031 (diff.c: buffer all output if asked to, 2017-06-29) to free the containing "buf" in addition to its members. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04merge-base: free() allocated "struct commit **" listLibravatar Ævar Arnfjörð Bjarmason1-1/+4
Fix a memory leak in 53eda89b2fe (merge-base: teach "git merge-base" to drive underlying merge_bases_many(), 2008-07-30) by calling free() on the "struct commit **" list used by "git merge-base". This gets e.g. "t6010-merge-base.sh" closer to passing under SANITIZE=leak, it failed 8 tests before when compiled with that option, and now fails only 5 tests. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04index-pack: fix memory leaksLibravatar Ævar Arnfjörð Bjarmason1-0/+5
Fix various memory leaks in "git index-pack", due to how tightly coupled this command is with the revision walking this doesn't make any new tests pass. But e.g. this now passes, and had several failures before, i.e. we still have failures in tests 3, 5 etc., which are being skipped here. ./t5300-pack-object.sh --run=1-2,4,6-27,30-42 It is a bit odd that we'll free "opts.anomaly", since the "opts" is a "struct pack_idx_option" declared in pack.h. In pack-write.c there's a reset_pack_idx_option(), but it only wipes the contents, but doesn't free() anything. Doing this here in cmd_index_pack() is correct because while the struct is declared in pack.h, this code in builtin/index-pack.c (in read_v2_anomalous_offsets()) is what allocates the "opts.anomaly", so we should also free it here. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04t/lib-gpg: kill all gpg components, not just gpg-agentLibravatar Todd Zullinger1-1/+1
The gpg-agent is one of several processes that newer releases of GnuPG start automatically. Issue a kill to each of them to ensure they do not affect separate tests. (Yes, the separate GNUPGHOME should do that already. If we find that is case, we could drop the --kill entirely.) In terms of compatibility, the 'all' keyword was added to the --kill & --reload options in GnuPG 2.1.18. Debian and RHEL are often used as indicators of how a change might affect older systems we often try to support. - Debian Strech (old old stable), which has limited security support until June 2022, has GnuPG 2.1.18 (or 2.2.x in backports). - CentOS/RHEL 7, which is supported until June 2024, has GnuPG 2.0.22, which lacks the --kill option, so the change won't have any impact. Signed-off-by: Todd Zullinger <tmz@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04t/lib-gpg: reload gpg components after updating trustlistLibravatar Todd Zullinger1-0/+1
With gpgsm from gnupg-2.3, the changes to the trustlist.txt do not appear to be picked up without refreshing the gpg-agent. Use the 'all' keyword to reload all of the gpg components. The scdaemon is started as a child of gpg-agent, for example. We used to have a --kill at this spot, but I removed it in 2e285e7803 (t/lib-gpg: drop redundant killing of gpg-agent, 2019-02-07). It seems like it might be necessary (again) for 2.3. Signed-off-by: Todd Zullinger <tmz@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-04gpg-interface/gpgsm: fix for v2.3Libravatar Fabian Stelzer3-7/+13
Checking if signing was successful will now accept '[GNUPG]: SIG_CREATED' on the beginning of the first or any subsequent line. Not just explictly the second one anymore. Gpgsm v2.3 changed its output when listing keys from `fingerprint` to `sha1/2 fpr`. This leads to the gpgsm tests silently not being executed because of a failed prerequisite. Switch to gpg's `--with-colons` output format when evaluating test prerequisites to make parsing more robust. This also allows us to combine the existing grep/cut/tr/echo pipe for writing the trustlist.txt into a single awk expression. Adjust error message checking in test for v2.3 specific output changes. Helped-By: Junio C Hamano <gitster@pobox.com> Helped-By: Todd Zullinger <tmz@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-03t5503: simplify setup of test which exercises failure of backfillLibravatar Patrick Steinhardt1-15/+5
In the testcase to exercise backfilling of tags for fetches we evoke a failure of the backfilling mechanism by creating a reference that later on causes a D/F conflict. Because the assumption was that git-fetch(1) would notice the D/F conflict early on this conflicting reference was created via the reference-transaction hook just when we were about to write the backfilled tag. As it turns out though this is not the case, and the fetch fails in the same way when we create the conflicting ref up front. Simplify the test setup creating the reference up front, which allows us to get rid of the hook script. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-03Documentation: git-read-tree: separate links using commasLibravatar Nihal Jere1-2/+2
This makes it consistent with the rest of the documentation. Signed-off-by: Nihal Jere <nihal@nihaljere.xyz> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-03Makefiles: add and use wildcard "mkdir -p" templateLibravatar Ævar Arnfjörð Bjarmason3-27/+27
Add a template to do the "mkdir -p" of $(@D) (the parent dir of $@) for us, and use it for the "make lint-docs" targets I added in 8650c6298c1 (doc lint: make "lint-docs" non-.PHONY, 2021-10-15). As seen in 4c64fb5aad9 (Documentation/Makefile: fix lint-docs mkdir dependency, 2021-10-26) maintaining these manual lists of parent directory dependencies is fragile, in addition to being obviously verbose. I used this pattern at the time because I couldn't find another method than "order-only" prerequisites to avoid doing a "mkdir -p $(@D)" for every file being created, which as noted in [1] would be significantly slower. But as it turns out we can use this neat trick of only doing a "mkdir -p" if the $(wildcard) macro tells us the path doesn't exist. A re-run of a performance test similar to that noted downthread of [1] in [2] shows that this is faster, in addition to being less verbose and more reliable (this uses my "git-hyperfine" thin wrapper for "hyperfine"[3]): $ git -c hyperfine.hook.setup= hyperfine -L rev HEAD~1,HEAD~0 -s 'make -C Documentation lint-docs' -p 'rm -rf Documentation/.build' 'make -C Documentation -j1 lint-docs' Benchmark 1: make -C Documentation -j1 lint-docs' in 'HEAD~1 Time (mean ± σ): 2.914 s ± 0.062 s [User: 2.449 s, System: 0.489 s] Range (min … max): 2.834 s … 3.020 s 10 runs Benchmark 2: make -C Documentation -j1 lint-docs' in 'HEAD~0 Time (mean ± σ): 2.315 s ± 0.062 s [User: 1.950 s, System: 0.386 s] Range (min … max): 2.229 s … 2.397 s 10 runs Summary 'make -C Documentation -j1 lint-docs' in 'HEAD~0' ran 1.26 ± 0.04 times faster than 'make -C Documentation -j1 lint-docs' in 'HEAD~1' So let's use that pattern both for the "lint-docs" target, and a few miscellaneous other targets. This method of creating parent directories is explicitly racy in that we don't know if we're going to say always create a "foo" followed by a "foo/bar" under parallelism, or skip the "foo" because we created "foo/bar" first. In this case it doesn't matter for anything except that we aren't guaranteed to get the same number of rules firing when running make in parallel. 1. https://lore.kernel.org/git/211028.861r45y3pt.gmgdl@evledraar.gmail.com/ 2. https://lore.kernel.org/git/211028.86o879vvtp.gmgdl@evledraar.gmail.com/ 3. https://gitlab.com/avar/git-hyperfine/ Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>