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2026-08-11git: avoid segfault on "git --shallow-file" without a valueChristian Couder1-0/+7
In "git.c", the other `handle_options()` options that take their value as a separate argument, like `--git-dir`, `--namespace` or `-C`, check that such an argument actually exists before using it, and error out with a message and the usage string otherwise. The `--shallow-file` option doesn't perform that check. It blindly advances past the option and then dereferences the next element of `argv`, which is the NULL terminator when no value was given. So `git --shallow-file` segfaults: $ git --shallow-file Segmentation fault (core dumped) Let's fix that by checking that a value was given, in the same way and with a message worded like the ones the other options use. While at it, let's also set the environment variable before advancing past the option, instead of advancing first and using `(*argv)[0]`, so that this option looks like the other ones. Note that all the in-tree callers passing `--shallow-file` to a `git` subprocess always pass a value after it, so they are not affected. In `upload-pack.c` that value is an empty string, which is still accepted. Signed-off-by: Christian Couder <christian.couder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2026-07-06t: convert grep assertions to test_grepMichael Montalbo1-1/+1
Replace bare grep with test_grep in test assertions across the suite, including sourced test helpers (lib-*.sh, *-tests.sh). test_grep prints the contents of the file being searched on failure, making debugging easier than a bare grep which fails silently. Only assertion-style greps are converted: grep used as a filter in pipelines, command substitutions, conditionals, or with redirected I/O is left as-is with a "# lint-ok" annotation. Existing '! test_grep' calls are rewritten to 'test_grep !' so that the diagnostic output is preserved on failure. test_grep requires the file it reads to exist, so '! grep' assertions that inspect a file whose presence is conditional need care. In t5537 the '.git/shallow' file is still present after the repack (the client remains shallow), so the assertion is converted like any other. In t1400 the '.git/packed-refs' file exists only with the files backend, so its check is guarded with a REFFILES prerequisite; the backend-agnostic 'git show-ref' check that follows still runs under every backend. In t7450 'git~2' is the NTFS 8.3 short name of a '..git' file and only exists when 8.3 short-name generation is enabled, so its check is guarded with a 'test -f' on the path and uses test_grep inside the guard, the same shape as t1400 (a plain test_grep would BUG when the short name is absent). The conversion was generated using a grep-assertion linter (greplint.pl, added in the following commit) to identify bare grep calls at command position. To reproduce, from the t/ directory: # Step 1: annotate the two data-filter greps (grep produces # data, not a verdict) so the linter skips them. sed -i '/grep -vf before commits\.raw/s/$/ # lint-ok: data filter/' \ t5326-multi-pack-bitmaps.sh sed -i '/grep -E "^\[0-9a-f\].*|| :/s/$/ # lint-ok: data filter/' \ t5702-protocol-v2.sh # Step 1b: two '! grep' assertions need more than a mechanical # conversion; handle them by hand before the linter-driven steps # below so it leaves them alone. # # t1400: '.git/packed-refs' is absent under reftable, so guard the # check with REFFILES (a plain test_grep would BUG on the missing # file): # # git update-ref -d HEAD $B && # - ! grep "$m" .git/packed-refs && # + if test_have_prereq REFFILES # + then # + test_grep ! "$m" .git/packed-refs # + fi && # test_must_fail git show-ref --verify -q $m # # t7450: git~2 is an NTFS 8.3 short name that exists only when # short-name generation is enabled, so guard the check on its # presence with 'test -f' and note in a comment why the path can # be absent (a plain test_grep would BUG when it is): # # - ! grep gitdir squatting-clone/d/a/git~2 # + if test -f squatting-clone/d/a/git~2 # + then # + test_grep ! gitdir squatting-clone/d/a/git~2 # + fi # Step 2: reorder pre-existing '! test_grep' to 'test_grep !' # (must come before steps 3-4 so greplint does not see them) sed -i 's/! test_grep/test_grep !/' t0031-lockfile-pid.sh sed -i 's/! test_grep/test_grep !/' t5300-pack-object.sh sed -i 's/! test_grep/test_grep !/' t5319-multi-pack-index.sh # Step 3: convert '! grep' -> 'test_grep !' perl greplint.pl *.sh 2>&1 | cut -d: -f1,2 | while IFS=: read f l; do sed -i "${l}s/! *grep/test_grep !/" "$f" done # Step 4: convert remaining 'grep' -> 'test_grep' perl greplint.pl *.sh 2>&1 | cut -d: -f1,2 | while IFS=: read f l; do sed -i "${l}s/grep/test_grep/" "$f" done To verify, run: make -C t test-greplint Signed-off-by: Michael Montalbo <mmontalbo@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-11-21t: remove TEST_PASSES_SANITIZE_LEAK annotationsPatrick Steinhardt1-1/+0
Now that the default value for TEST_PASSES_SANITIZE_LEAK is `true` there is no longer a need to have that variable declared in all of our tests. Drop it. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-11-02tests: teach callers of test_i18ngrep to use test_grepJunio C Hamano1-16/+16
They are equivalents and the former still exists, so as long as the only change this commit makes are to rewrite test_i18ngrep to test_grep, there won't be any new bug, even if there still are callers of test_i18ngrep remaining in the tree, or when merged to other topics that add new uses of test_i18ngrep. This patch was produced more or less with git grep -l -e 'test_i18ngrep ' 't/t[0-9][0-9][0-9][0-9]-*.sh' | xargs perl -p -i -e 's/test_i18ngrep /test_grep /' and a good way to sanity check the result yourself is to run the above in a checkout of c4603c1c (test framework: further deprecate test_i18ngrep, 2023-10-31) and compare the resulting working tree contents with the result of applying this patch to the same commit. You'll see that test_i18ngrep in a few t/lib-*.sh files corrected, in addition to the manual reproduction. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-07-10ref-filter: add `ref_filter_clear()`Jeff King1-0/+1
We did not bother to clean up at all in `git branch` or `git tag`, and `git for-each-ref` only cleans up a couple of members. Add and call `ref_filter_clear()` when cleaning up a `struct ref_filter`. Running this patch (without any test changes) indicates a couple of now leak-free tests. This was found by running: $ make SANITIZE=leak $ make -C t GIT_TEST_PASSING_SANITIZE_LEAK=check GIT_TEST_OPTS=--immediate (Note that the `reachable_from` and `unreachable_from` lists should be cleaned as they are used. So this is just covering any case where we might bail before running the reachability check.) Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-11-19t[01]*: adjust the references to the default branch name "main"Johannes Schindelin1-6/+6
Carefully excluding t1309, which sees independent development elsewhere at the time of writing, we transition above-mentioned tests to the default branch name `main`. This trick was performed via $ (cd t && sed -i -e 's/master/main/g' -e 's/MASTER/MAIN/g' \ -e 's/Master/Main/g' -e 's/naster/nain/g' -- t[01]*.sh && git checkout HEAD -- t1309\*) Note that t5533 contains a variation of the name `master` (`naster`) that we rename here, too. This allows us to define `GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main` for those tests. Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-11-19tests: mark tests relying on the current default for `init.defaultBranch`Johannes Schindelin1-0/+3
In addition to the manual adjustment to let the `linux-gcc` CI job run the test suite with `master` and then with `main`, this patch makes sure that GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME is set in all test scripts that currently rely on the initial branch name being `master by default. To determine which test scripts to mark up, the first step was to force-set the default branch name to `master` in - all test scripts that contain the keyword `master`, - t4211, which expects `t/t4211/history.export` with a hard-coded ref to initialize the default branch, - t5560 because it sources `t/t556x_common` which uses `master`, - t8002 and t8012 because both source `t/annotate-tests.sh` which also uses `master`) This trick was performed by this command: $ sed -i '/^ *\. \.\/\(test-lib\|lib-\(bash\|cvs\|git-svn\)\|gitweb-lib\)\.sh$/i\ GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master\ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME\ ' $(git grep -l master t/t[0-9]*.sh) \ t/t4211*.sh t/t5560*.sh t/t8002*.sh t/t8012*.sh After that, careful, manual inspection revealed that some of the test scripts containing the needle `master` do not actually rely on a specific default branch name: either they mention `master` only in a comment, or they initialize that branch specificially, or they do not actually refer to the current default branch. Therefore, the aforementioned modification was undone in those test scripts thusly: $ git checkout HEAD -- \ t/t0027-auto-crlf.sh t/t0060-path-utils.sh \ t/t1011-read-tree-sparse-checkout.sh \ t/t1305-config-include.sh t/t1309-early-config.sh \ t/t1402-check-ref-format.sh t/t1450-fsck.sh \ t/t2024-checkout-dwim.sh \ t/t2106-update-index-assume-unchanged.sh \ t/t3040-subprojects-basic.sh t/t3301-notes.sh \ t/t3308-notes-merge.sh t/t3423-rebase-reword.sh \ t/t3436-rebase-more-options.sh \ t/t4015-diff-whitespace.sh t/t4257-am-interactive.sh \ t/t5323-pack-redundant.sh t/t5401-update-hooks.sh \ t/t5511-refspec.sh t/t5526-fetch-submodules.sh \ t/t5529-push-errors.sh t/t5530-upload-pack-error.sh \ t/t5548-push-porcelain.sh \ t/t5552-skipping-fetch-negotiator.sh \ t/t5572-pull-submodule.sh t/t5608-clone-2gb.sh \ t/t5614-clone-submodules-shallow.sh \ t/t7508-status.sh t/t7606-merge-custom.sh \ t/t9302-fast-import-unpack-limit.sh We excluded one set of test scripts in these commands, though: the range of `git p4` tests. The reason? `git p4` stores the (foreign) remote branch in the branch called `p4/master`, which is obviously not the default branch. Manual analysis revealed that only five of these tests actually require a specific default branch name to pass; They were modified thusly: $ sed -i '/^ *\. \.\/lib-git-p4\.sh$/i\ GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master\ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME\ ' t/t980[0167]*.sh t/t9811*.sh Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-22parse-options: do not show usage upon invalid option valuePaul-Sebastian Ungureanu1-0/+107
Usually, the usage should be shown only if the user does not know what options are available. If the user specifies an invalid value, the user is already aware of the available options. In this case, there is no point in displaying the usage anymore. This patch applies to "git tag --contains", "git branch --contains", "git branch --points-at", "git for-each-ref --contains" and many more. Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>