If a command is marked as test_must_fail but dies with a
signal, we consider that a problem and report the error to
stderr. However, we don't say _which_ signal; knowing that
can make debugging easier. Let's share as much as we know.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the other side feeds us a bogus pack, index-pack (or
unpack-objects) may die early, before consuming all of its
input. As a result, the sideband demuxer may get SIGPIPE
(racily, depending on whether our data made it into the pipe
buffer or not). If this happens and we are compiled with
pthread support, it will take down the main thread, too.
This isn't the end of the world, as the main process will
just die() anyway when it sees index-pack failed. But it
does mean we don't get a chance to say "fatal: index-pack
failed" or similar. And it also means that we racily fail
t5504, as we sometimes die() and sometimes are killed by
SIGPIPE.
So let's ignore SIGPIPE while demuxing the sideband. We are
already careful to check the return value of write(), so we
won't waste time writing to a broken pipe. The caller will
notice the error return from the async thread, though in
practice we don't even get that far, as we die() as soon as
we see that index-pack failed.
The non-sideband case is already fine; we let index-pack
read straight from the socket, so there is no SIGPIPE at
all. Technically the non-threaded async case is also OK
without this (the forked async process gets SIGPIPE), but
it's not worth distinguishing from the threaded case here.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When write_or_die() sees EPIPE, it treats it specially by
converting it into a SIGPIPE death. We obviously cannot
ignore it, as the write has failed and the caller expects us
to die. But likewise, we cannot just call die(), because
printing any message at all would be a nuisance during
normal operations.
However, this is a problem if write_or_die() is called from
a thread. Our raised signal ends up killing the whole
process, when logically we just need to kill the thread
(after all, if we are ignoring SIGPIPE, there is good reason
to think that the main thread is expecting to handle it).
Inside an async thread, the die() code already does the
right thing, because we use our custom die_async() routine,
which calls pthread_join(). So ideally we would piggy-back
on that, and simply call:
die_quietly_with_code(141);
or similar. But refactoring the die code to do this is
surprisingly non-trivial. The die_routines themselves handle
both printing and the decision of the exit code. Every one
of them would have to be modified to take new parameters for
the code, and to tell us to be quiet.
Instead, we can just teach write_or_die() to check for the
async case and handle it specially. We do have to build an
interface to abstract the async exit, but it's simple and
self-contained. If we had many call-sites that wanted to do
this die_quietly_with_code(), this approach wouldn't scale
as well, but we don't. This is the only place where do this
weird exit trick.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Paths that have been told the index about with "add -N" are not
quite yet in the index, but a few commands behaved as if they
already are in a harmful way.
* nd/ita-cleanup:
grep: make it clear i-t-a entries are ignored
add and use a convenience macro ce_intent_to_add()
blame: remove obsolete comment
The documentation for "git clean" has been corrected; it mentioned
that .git/modules/* are removed by giving two "-f", which has never
been the case.
* mm/clean-doc-fix:
Documentation/git-clean.txt: don't mention deletion of .git/modules/*
The vimdiff backend for "git mergetool" has been tweaked to arrange
and number buffers in the order that would match the expectation of
majority of people who read left to right, then top down and assign
buffers 1 2 3 4 "mentally" to local base remote merge windows based
on that order.
* dw/mergetool-vim-window-shuffle:
mergetool: reorder vim/gvim buffers in three-way diffs
The emulated "yes" command used in our test scripts has been
tweaked not to spend too much time generating unnecessary output
that is not used, to help those who test on Windows where it would
not stop until it fills the pipe buffer due to lack of SIGPIPE.
* js/test-lib-windows-emulated-yes:
test-lib: limit the output of the yes utility
"git push --force-with-lease" has been taught to report if the push
needed to force (or fast-forwarded).
* aw/push-force-with-lease-reporting:
push: fix ref status reporting for --force-with-lease
"git worktree" had a broken code that attempted to auto-fix
possible inconsistency that results from end-users moving a
worktree to different places without telling Git (the original
repository needs to maintain backpointers to its worktrees, but
"mv" run by end-users who are not familiar with that fact will
obviously not adjust them), which actually made things worse
when triggered.
* nd/do-not-move-worktree-manually:
worktree: stop supporting moving worktrees manually
worktree.c: fix indentation
The low-level merge machinery has been taught to use CRLF line
termination when inserting conflict markers to merged contents that
are themselves CRLF line-terminated.
* js/xmerge-marker-eol:
merge-file: ensure that conflict sections match eol style
merge-file: let conflict markers match end-of-line style of the context
When invoking default (g)vimdiff three-way merge, the merged file is
loaded as the first buffer but moved to the bottom as the fourth window.
This causes a disconnect between vim commands that operate on window
positions (e.g. CTRL-W_w) and those that operate on buffer index (e.g.
do/dp).
This change reorders the buffers to have the same index as windows while
keeping the cursor default to the merged result as the bottom window.
Signed-off-by: Dickson Wong <dicksonwong@gmail.com>
Tested-by: Michael J Gruber <git@drmicha.warpmail.net>
Acked-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The latter half of this sentence, the removal of the submodules, was
never done with (or without) double -f back when it was written, and
we still do not do so.
Signed-off-by: Matt McCutchen <matt@mattmccutchen.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Documentation for "git fetch --depth" has been updated for clarity.
* ss/clone-depth-single-doc:
docs: clarify that --depth for git-fetch works with newly initialized repos
docs: say "commits" in the --depth option wording for git-clone
docs: clarify that passing --depth to git-clone implies --single-branch
Drop a few old "todo" items by deciding that the change one of them
suggests is not such a good idea, and doing the change the other
one suggested to do.
* ss/user-manual:
user-manual: add addition gitweb information
user-manual: add section documenting shallow clones
glossary: define the term shallow clone
user-manual: remove temporary branch entry from todo list
The underlying machinery used by "ls-files -o" and other commands
have been taught not to create empty submodule ref cache for a
directory that is not a submodule. This removes a ton of wasted
CPU cycles.
* jk/ref-cache-non-repository-optim:
resolve_gitlink_ref: ignore non-repository paths
clean: make is_git_repository a public function
dirname() emulation has been added, as Msys2 lacks it.
* js/dirname-basename:
mingw: avoid linking to the C library's isalpha()
t0060: loosen overly strict expectations
t0060: verify that basename() and dirname() work as expected
compat/basename.c: provide a dirname() compatibility function
compat/basename: make basename() conform to POSIX
Refactor skipping DOS drive prefixes
A few options of "git diff" did not work well when the command was
run from a subdirectory.
* nd/diff-with-path-params:
diff: make -O and --output work in subdirectory
diff-no-index: do not take a redundant prefix argument
The "split" subcommand of "git subtree" (in contrib/) incorrectly
skipped merges when it shouldn't, which was corrected.
* dw/subtree-split-do-not-drop-merge:
contrib/subtree: fix "subtree split" skipped-merge bug
"git tag" started listing a tag "foo" as "tags/foo" when a branch
named "foo" exists in the same repository; remove this unnecessary
disambiguation, which is a regression introduced in v2.7.0.
* jk/list-tag-2.7-regression:
tag: do not show ambiguous tag names as "tags/foo"
t6300: use test_atom for some un-modern tests
The description for SANITY prerequisite the test suite uses has
been clarified both in the comment and in the implementation.
* jk/sanity:
test-lib: clarify and tighten SANITY
A recent optimization to filter-branch in v2.7.0 introduced a
regression when --prune-empty filter is used, which has been
corrected.
* jk/filter-branch-no-index:
filter-branch: resolve $commit^{tree} in no-index case
Many codepaths that run "gc --auto" before exiting kept packfiles
mapped and left the file descriptors to them open, which was not
friendly to systems that cannot remove files that are open. They
now close the packs before doing so.
* js/close-packs-before-gc:
receive-pack: release pack files before garbage-collecting
merge: release pack files before garbage-collecting
am: release pack files before garbage-collecting
fetch: release pack files before garbage-collecting
"git rebase", unlike all other callers of "gc --auto", did not
ignore the exit code from "gc --auto".
* jk/ok-to-fail-gc-auto-in-rebase:
rebase: ignore failures from "gc --auto"
Asking gitweb for a nonexistent commit left a warning in the server
log.
Somebody may want to follow this up with a new test, perhaps?
IIRC, we do test that no Perl warnings are given to the server log,
so this should have been caught if our test coverage were good.
* ho/gitweb-squelch-undef-warning:
gitweb: squelch "uninitialized value" warning
Some codepaths used fopen(3) when opening a fixed path in $GIT_DIR
(e.g. COMMIT_EDITMSG) that is meant to be left after the command is
done. This however did not work well if the repository is set to
be shared with core.sharedRepository and the umask of the previous
user is tighter. They have been made to work better by calling
unlink(2) and retrying after fopen(3) fails with EPERM.
* js/fopen-harder:
Handle more file writes correctly in shared repos
commit: allow editing the commit message even in shared repos
The ignore mechanism saw a few regressions around untracked file
listing and sparse checkout selection areas in 2.7.0; the change
that is responsible for the regression has been reverted.
* nd/exclusion-regression-fix:
Revert "dir.c: don't exclude whole dir prematurely if neg pattern may match"
"git reflog" incorrectly assumed that all objects that used to be
at the tip of a ref must be commits, which caused it to segfault.
* dk/reflog-walk-with-non-commit:
reflog-walk: don't segfault on non-commit sha1's in the reflog
The documentation has been updated to hint the connection between
the '--signoff' option and DCO.
* dw/signoff-doc:
Expand documentation describing --signoff
A few unportable C construct have been spotted by clang compiler
and have been fixed.
* jk/clang-pedantic:
bswap: add NO_UNALIGNED_LOADS define
avoid shifting signed integers 31 bits
"git send-email" was confused by escaped quotes stored in the alias
files saved by "mutt", which has been corrected.
* ew/send-email-mutt-alias-fix:
git-send-email: do not double-escape quotes from mutt
The "exclude_list" structure has the usual "alloc, nr" pair of
fields to be used by ALLOC_GROW(), but clear_exclude_list() forgot
to reset 'alloc' to 0 when it cleared 'nr' to discard the managed
array.
* nd/dir-exclude-cleanup:
dir.c: clean the entire struct in clear_exclude_list()
An earlier change in 2.5.x-era broke users' hooks and aliases by
exporting GIT_WORK_TREE to point at the root of the working tree,
interfering when they tried to use a different working tree without
setting GIT_WORK_TREE environment themselves.
* nd/stop-setenv-work-tree:
Revert "setup: set env $GIT_WORK_TREE when work tree is set, like $GIT_DIR"
On Windows, there is no SIGPIPE. A consequence of this is that the
upstream process of a pipe does not notice the death of the downstream
process until the pipe buffer is full and writing more data returns an
error. This behavior is the reason for an annoying delay during the
execution of t7610-mergetool.sh: There are a number of test cases where
'yes' is invoked upstream. Since the utility is basically an endless
loop it runs, on Windows, until the pipe buffer is full. This does take
a few seconds.
The test suite has its own implementation of 'yes'. Modify it to produce
only a limited amount of output that is sufficient for the test suite.
The amount chosen should be sufficiently high for any test case, assuming
that future test cases will not exaggerate their demands of input from
an upstream 'yes' invocation.
[j6t: commit message]
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The --force--with-lease push option leads to less
detailed status information than --force. In particular,
the output indicates that a reference was fast-forwarded,
even when it was force-updated.
Modify the --force-with-lease ref status logic to leverage
the --force ref status logic when the "lease" conditions
are met.
Also, enhance tests to validate output status reporting.
Signed-off-by: Andrew Wheeler <awheeler@motorola.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
I couldn't find any other examples of people referring to this
character as a "blank".
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
