The tree is not open for new development yet, but let's mark the
beginning of the new cycle before we start merging down regression
fix topics.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In commits bc3ae46b42 ("rebase: do not attempt to remove
startup_info->original_cwd", 2021-12-09) and 0fce211ccc ("stash: do not
attempt to remove startup_info->original_cwd", 2021-12-09), we wanted to
allow the subprocess to know which directory the parent process was
running from, so that the subprocess could protect it. However...
When run from a non-main worktree, setup_git_directory() will note
that the discovered git directory
(/PATH/TO/.git/worktree/non-main-worktree) does not match
DEFAULT_GIT_DIR_ENVIRONMENT (see setup_discovered_git_dir()), and
decide to set GIT_DIR in the environment. This matters because...
Whenever git is run with the GIT_DIR environment variable set, and
GIT_WORK_TREE not set, it presumes that '.' is the working tree. So...
This combination results in the subcommand being very confused about
the working tree. Fix it by also setting the GIT_WORK_TREE environment
variable along with setting cmd.dir.
A possibly more involved fix we could consider for later would be to
make setup.c set GIT_WORK_TREE whenever (a) it discovers both the git
directory and the working tree and (b) it decides to set GIT_DIR in the
environment. I did not attempt that here as such would be too big of a
change for a 2.35.1 release.
Test-case-by: Glen Choo <chooglen@google.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When cloning a branchless and tagless but not refless remote using
protocol v0 or v1, Git calls transport_fetch_refs() with an empty ref
list. This makes the clone fail with the message "remote transport
reported error".
Git should have refrained from calling transport_fetch_refs(), just like
it does in the case that the remote is refless. Therefore, teach Git to
do this.
In protocol v2, this does not happen because the client passes
ref-prefix arguments that filter out non-branches and non-tags in the
ref advertisement, making the remote appear empty.
Note that this bug concerns logic in builtin/clone.c and only affects
cloning, not fetching.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
mem_pool_alloc uses sizeof(uintmax_t) as a proxy for what should be
_Alignof(max_align_t) in C11. On most architectures this is sufficient
(though on m68k it is in fact overly strict, since the de-facto ABI,
which differs from the specified System V ABI, has the maximum alignment
of all types as 2 bytes), but on CHERI, and thus Arm's Morello
prototype, it is insufficient for any type that stores a pointer, which
must be aligned to 128 bits (on 64-bit architectures extended with
CHERI), whilst uintmax_t is a 64-bit integer.
Fix this by introducing our own approximation for max_align_t and a
means to compute _Alignof it without relying on C11. Currently this
union only contains uintmax_t and void *, but more types can be added as
needed.
Signed-off-by: Jessica Clarke <jrtc27@jrtc27.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We added an unrelated sanity checking that leads to a BUG() while
plugging a leak, which triggered in a repository with symrefs in
the local branch namespace that point at a ref outside. Partially
revert the change to avoid triggering the BUG().
* ab/checkout-branch-info-leakfix:
checkout: avoid BUG() when hitting a broken repository
... at least for now. So let's error out if we are even trying to
initialize the split index when the index is sparse, or when trying to
write the split index extension for a sparse index.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 61feddcdf2 (tests: disable GIT_TEST_SPLIT_INDEX for sparse index
tests, 2021-08-26), it was already called out that the split index
feature is incompatible with the sparse index feature, and its commit
message wondered aloud whether more checks would be required to ensure
that the split index and sparse index features aren't enabled at the
same time.
We are about to introduce such additional checks, and indeed, t1091
would utterly fail with them. Therefore, let's preemptively disable the
split index for the entirety of t1091.
This partially reverts above-mentioned patch because it covered only one
test case whereas we want to cover the entire test script.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 6e773527b6 (sparse-index: convert from full to sparse, 2021-03-30),
we introduced initial support for a sparse index, and were careful to
avoid converting to a sparse index in the presence of a split index.
However, when we _just_ read a freshly-initialized index, it might not
contain a split index even if _writing_ it will add one by virtue of
being asked for via the `GIT_TEST_SPLIT_INDEX` variable.
We did not notice any problems with checking _only_ for `split_index`
(and not `GIT_TEST_SPLIT_INDEX`) right until both
`vd/sparse-sparsity-fix-on-read` _and_ `vd/sparse-reset` were merged.
Those two topics' interplay triggers a bug in conjunction with running
t1091.15 when `GIT_TEST_SPLIT_INDEX=true` in the following way:
`vd/sparse-sparsity-fix-on-read` ensures that the index is made sparse
right after reading, and `vd/sparse-reset` ensures that the index is
made non-sparse again unless running in the `--soft` mode. Since the
split index feature is incompatible with the sparse index feature, we
see a symptom like this:
fatal: position for replacement 4 exceeds base index size 4
Let's fix this by avoiding the conversion to a sparse index when
`GIT_TEST_SPLIT_INDEX=true`.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When 9081a421 (checkout: fix "branch info" memory leaks, 2021-11-16)
cleaned up existing memory leaks, we added an unrelated sanity check
to ensure that a local branch is truly local and not a symref to
elsewhere that dies with BUG() otherwise. This was misguided in two
ways. First of all, such a tightening did not belong to a leak-fix
patch. And the condition it detected was *not* a bug in our program
but a problem in user data, where warning() or die() would have been
more appropriate.
As the condition is not fatal (the result of computing the local
branch name in the code that is involved in the faulty check is only
used as a textual label for the commit), let's revert the code to
the original state, i.e. strip "refs/heads/" to compute the local
branch name if possible, and otherwise leave it NULL. The consumer
of the information in merge_working_tree() is prepared to see NULL
in there and act accordingly.
cf. https://bugzilla.redhat.com/show_bug.cgi?id=2042920
Reported-by: Petr Šplíchal <psplicha@redhat.com>
Reported-by: Todd Zullinger <tmz@pobox.com>
Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There were two commit_lists created in cmd_merge() that were only
conditionally free()'d. Add a quick conditional call to
free_commit_list() for each of them at the end of the function.
Testing this commit against t6404 under valgrind shows that this patch
fixes the following two leaks:
16 bytes in 1 blocks are definitely lost in loss record 16 of 126
at 0x484086F: malloc (vg_replace_malloc.c:380)
by 0x69FFEB: do_xmalloc (wrapper.c:41)
by 0x6A0073: xmalloc (wrapper.c:62)
by 0x52A72D: commit_list_insert (commit.c:556)
by 0x47FC93: reduce_parents (merge.c:1114)
by 0x4801EE: collect_parents (merge.c:1214)
by 0x480B56: cmd_merge (merge.c:1465)
by 0x40686E: run_builtin (git.c:464)
by 0x406C51: handle_builtin (git.c:716)
by 0x406E96: run_argv (git.c:783)
by 0x40730A: cmd_main (git.c:914)
by 0x4E7DFA: main (common-main.c:56)
8 (16 direct, 32 indirect) bytes in 1 blocks are definitely lost in \
loss record 61 of 126
at 0x484086F: malloc (vg_replace_malloc.c:380)
by 0x69FFEB: do_xmalloc (wrapper.c:41)
by 0x6A0073: xmalloc (wrapper.c:62)
by 0x52A72D: commit_list_insert (commit.c:556)
by 0x52A8F2: commit_list_insert_by_date (commit.c:620)
by 0x5270AC: get_merge_bases_many_0 (commit-reach.c:413)
by 0x52716C: repo_get_merge_bases (commit-reach.c:438)
by 0x480E5A: cmd_merge (merge.c:1520)
by 0x40686E: run_builtin (git.c:464)
by 0x406C51: handle_builtin (git.c:716)
by 0x406E96: run_argv (git.c:783)
by 0x40730A: cmd_main (git.c:914)
There are still 3 leaks in chdir_notify_register() after this, but
chdir_notify_register() has been brought up on the list before and folks
were not a fan of fixing those, so I'm not touching them.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The documentation for merge_incore_recursive(), modelled after
merge_recursive(), notes that
merge_bases will be consumed (emptied) so make a copy if you need it
However, in merge_ort_internal() (which merge_incore_recursive() calls),
it runs
merged_merge_bases = pop_commit(&merge_bases);
...
for (iter = merge_bases; iter; iter = iter->next) {
...
}
In other words, it only consumes the *first* entry of merge_bases, and
the rest it iterates through. If it iterated through all of them, the
caller could be responsible for free'ing the memory. If it consumed all
of them, the current documentation would be correct and the callers
would need to do nothing. The current middle ground makes it impossible
for callers to avoid memory leaks, since any attempt to use the
merge_bases it passes in would result in a use-after-free.
It turns out this part of the code was copied from merge-recursive.c,
which has had the same bug for 15.5 years. However, since we are trying
to keep merge-recursive.c stable as we sunset it, let's just fix the
leak in in merge_ort_internal() by having it actually consume all the
elements of the merge_bases commit_list.
Testing this commit against t6404 (the first testcase specifically
about recursive merges) under valgrind shows that this patch fixes
the following leak:
32 (16 direct, 16 indirect) bytes in 1 blocks are definitely lost \
in loss record 49 of 126
at 0x484086F: malloc (vg_replace_malloc.c:380)
by 0x69FFEB: do_xmalloc (wrapper.c:41)
by 0x6A0073: xmalloc (wrapper.c:62)
by 0x52A72D: commit_list_insert (commit.c:556)
by 0x47EC86: try_merge_strategy (merge.c:751)
by 0x48143B: cmd_merge (merge.c:1679)
by 0x40686E: run_builtin (git.c:464)
by 0x406C51: handle_builtin (git.c:716)
by 0x406E96: run_argv (git.c:783)
by 0x40730A: cmd_main (git.c:914)
by 0x4E7DFA: main (common-main.c:56)
Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When creating the sparse-checkout file, Git does not create the leading
directory, "$GIT_DIR/info", if it does not exist. This causes problems
if the repository does not have that directory. Therefore, ensure that
the leading directory is created.
This is the only "open" in builtin/sparse-checkout.c that does not have
a leading directory check. (The other one in write_patterns_and_update()
does.)
Note that the test needs to explicitly specify a template when running
"git init" because the default template used in the tests has the
"info/" directory included.
Helped-by: Jose Lopes <jabolopes@google.com>
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git branch -h" incorrectly said "--track[=direct|inherit]",
implying that "--trackinherit" is a valid option, which has been
corrected.
source: <3de40324bea6a1dd9bca2654721471e3809e87d8.1642538935.git.steadmon@google.com>
source: <c3c26192-aee9-185a-e559-b8735139e49c@web.de>
* js/branch-track-inherit:
branch,checkout: fix --track documentation
Follow the example set by 12909b6b (i18n: turn "options are
incompatible" into "cannot be used together", 2022-01-05) and use
the same message string to reduce the need for translation.
Reported-by: Jiang Xin <worldhello.net@gmail.com>
Helped-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Document that the accepted variants of the --track option are --track,
--track=direct, and --track=inherit. The equal sign in the latter two
cannot be replaced with whitespace; in general optional arguments need
to be attached firmly to their option.
Put "direct" consistently before "inherit", if only for the reasons
that the former is the default, explained first in the documentation,
and comes before the latter alphabetically.
Mention both modes in the short help so that readers don't have to look
them up in the full documentation. They are literal strings and thus
untranslatable. PARSE_OPT_LITERAL_ARGHELP is inferred due to the pipe
and parenthesis characters, so we don't have to provide that flag
explicitly.
Mention that -t has the same effect as --track and --track=direct.
There is no way to specify inherit mode using the short option, because
short options generally don't accept optional arguments.
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The trace2 subsystem can inherit certain information from parent
processes via environment variables; e.g., the parent command name and
session ID. This allows trace2 to note when a command is the child
process of another Git process, and to adjust various pieces of output
accordingly.
This behavior breaks certain tests that examine trace2 output when the
tests run as a child of another git process, such as in `git rebase -x
"make test"`.
While we could fix this by unsetting the relevant variables in the
affected tests (currently t0210, t0211, t0212, and t6421), this would
leave other tests vulnerable to similar breakage if new test cases are
added which inspect trace2 output. So fix this in general by unsetting
GIT_TRACE2_PARENT_NAME and GIT_TRACE2_PARENT_SID in test-lib.sh.
Reported-by: Emily Shaffer <emilyshaffer@google.com>
Helped-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The German translation for "'%s' is aliased to '%s'" is incorrect. It
switches the order of alias name and alias definition.
A better translation would be "'%s' ist ein Alias für '%s'". (Full stop
removed intentionally, because the original does not use one either.)
Signed-off-by: Matthias Rüster <matthias.ruester@gmail.com>
A recent upstream topic introduced checks for certain Git commands that
prevent them from deleting the current working directory, introducing
also a regression test that ensures that commands such as `git version`
_can_ run without a current working directory.
While technically not possible on Windows via the regular Win32 API, we
do run the regression tests in an MSYS2 Bash which uses a POSIX
emulation layer (the MSYS2/Cygwin runtime) where a really evil hack
_does_ allow to delete a directory even if it is the current working
directory.
Therefore, Git needs to be prepared for a missing working directory,
even on Windows.
This issue was not noticed in upstream Git because there was no caller
that tried to discover a Git directory with a deleted current working
directory in the test suite. But in the microsoft/git fork, we do want
to run `pre-command`/`post-command` hooks for every command, even for
`git version`, which means that we make precisely such a call. The bug
is not in that `pre-command`/`post-command` feature, though, but in
`mingw_getcwd()` and needs to be addressed there.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
`git fetch --negotiate-only` is an implementation detail of push
negotiation and, unlike most `git fetch` invocations, does not actually
update the main repository. Thus it should not update submodules even
if submodule recursion is enabled.
This is not just slow, it is wrong e.g. push negotiation with
"submodule.recurse=true" will cause submodules to be updated because it
invokes `git fetch --negotiate-only`.
Fix this by disabling submodule recursion if --negotiate-only was given.
Since this makes --negotiate-only and --recurse-submodules incompatible,
check for this invalid combination and die.
This does not use the "goto cleanup" introduced in the previous commit
because we want to recurse through submodules whenever a ref is fetched,
and this can happen without introducing new objects.
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
cmd_fetch() does the following with the assumption that objects are
fetched:
* Run gc
* Write commit graphs (if enabled by fetch.writeCommitGraph=true)
However, neither of these tasks makes sense if objects are not fetched
e.g. `git fetch --negotiate-only` never fetches objects.
Speed up cmd_fetch() by bailing out early if we know for certain that
objects will not be fetched. cmd_fetch() can bail out early whenever
objects are not fetched, but for now this only considers
--negotiate-only.
The same optimization does not apply to `git fetch --dry-run` because
that actually fetches objects; the dry run refers to not updating refs.
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Replace an early return with 'goto cleanup' in cmd_fetch() so that the
string_list is always cleared (the string_list_clear() call is purely
cleanup; the string_list is not reused). This makes cleanup consistent
so that a subsequent commit can use 'goto cleanup' to bail out early.
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git branch -h" incorrectly said "--track[=direct|inherit]",
implying that "--trackinherit" is a valid option, which has been
corrected.
* js/branch-track-inherit:
branch,checkout: fix --track usage strings
FreeBSD 13.0 headers have unconditional dependency on C11 language
features, and adding -std=gnu99 to DEVELOPER_CFLAGS would just
break the developer build.
* jc/freebsd-without-c99-only-build:
Makefile: FreeBSD cannot do C99-or-below build
As Ævar pointed out in [1], the use of PARSE_OPT_LITERAL_ARGHELP with a
list of allowed parameters is not recommended. Both git-branch and
git-checkout were changed in d311566 (branch: add flags and config to
inherit tracking, 2021-12-20) to use this discouraged combination for
their --track flags.
Fix this by removing PARSE_OPT_LITERAL_ARGHELP, and changing the arghelp
to simply be "mode". Users may discover allowed values in the manual
pages.
[1]: https://lore.kernel.org/git/220111.86a6g3yqf9.gmgdl@evledraar.gmail.com/
Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is a feature that supports config file inclusion conditional on
whether the repo has a remote with a URL that matches a glob.
Similar to my previous work on remote-suggested hooks [1], the main
motivation is to allow remote repo administrators to provide recommended
configs in a way that can be consumed more easily (e.g. through a
package installable by a package manager - it could, for example,
contain a file to be included conditionally and a post-install script
that adds the include directive to the system-wide config file).
In order to do this, Git reruns the config parsing mechanism upon
noticing the first URL-conditional include in order to find all remote
URLs, and these remote URLs are then used to determine if that first and
all subsequent includes are executed. Remote URLs are not allowed to be
configued in any URL-conditionally-included file.
[1] https://lore.kernel.org/git/cover.1623881977.git.jonathantanmy@google.com/
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Acked-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It is not used from outside the file in which it is declared.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Acked-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In "make DEVELOPER=YesPlease" builds, we try to help developers to
catch as many potential issues as they can by using -Wall and
turning compilation warnings into errors. In the same spirit, we
recently started adding -std=gnu99 to their CFLAGS, so that they can
notice when they accidentally used language features beyond C99.
It however turns out that FreeBSD 13.0 mistakenly uses C11 extension
in its system header files regardless of what __STDC_VERSION__ says,
which means that the platform (unless we tweak their system headers)
cannot be used for this purpose.
It seems that -std=gnu99 is only added conditionally even in today's
config.mak.dev, so it is fine if we dropped -std=gnu99 from there.
Which means that developers on FreeBSD cannot participate in vetting
use of features beyond C99, but there are developers on other
platforms who will, so it's not too bad.
We might want a more "fundamental" fix to make the platform capable
of taking -std=gnu99, like working around the use of unconditional
C11 extension in its system header files by supplying a set of
"replacement" definitions in our header files. We chose not to
pursue such an approach for two reasons at this point:
(1) The fix belongs to the FreeBSD project, not this project, and
such an upstream fix may happen hopefully in a not-too-distant
future.
(2) Fixing such a bug in system header files and working it around
can lead to unexpected breakages (other parts of their system
header files may not be expecting to see and do not work well
with our "replacement" definitions). This close to the final
release of this cycle, we have no time for that.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Adjust build on RHEL 7 to explicitly ask C99 support and use
the fallback implementation of uncompress2 we ship.
* da/rhel7-lacks-uncompress2-and-c99:
build: centos/RHEL 7 ships with an older gcc and zlib
In commit 8b09a900a1 ("merge-ort: restart merge with cached renames to
reduce process entry cost", 2021-07-16), we noted that in the merge-ort
steps of
collect_merge_info()
detect_and_process_renames()
process_entries()
that process_entries() was expensive, and we could often make it cheaper
by changing this to
collect_merge_info()
detect_and_process_renames()
<cache all the renames, and restart>
collect_merge_info()
detect_and_process_renames()
process_entries()
because the second collect_merge_info() would be cheaper (we could avoid
traversing into some directories), the second
detect_and_process_renames() would be free since we had already detected
all renames, and then process_entries() has far fewer entries to handle.
However, this was built on the assumption that the first
detect_and_process_renames() actually detected all potential renames.
If someone has merge.renameLimit set to some small value, that
assumption is violated which manifests later with the following message:
$ git -c merge.renameLimit=1 rebase upstream
...
git: merge-ort.c:546: clear_or_reinit_internal_opts: Assertion
`renames->cached_pairs_valid_side == 0' failed.
Turn off this cache-renames-and-restart whenever we cannot detect all
renames, and add a testcase that would have caught this problem.
Reported-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Tested-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are some commands permit the user whether to provide options
first before args, or the reverse order. For example:
git push --dry-run <remote> <ref>
And:
git push <remote> <ref> --dry-run
Both of them is supported, but some commands do not, for instance:
git ls-remote --heads <remote>
And:
git ls-remote <remote> --heads
If <remote> only has one ref and it's name is "refs/heads/--heads", you
will get the same result, otherwise will not.This is because the former
in the second example will parse "--heads" as an "option" which means
to limit to only "refs/heads" when listing the remote references, the
latter treat "--heads" as an argument which means to filter the result
list with the given pattern.
Therefore, we want to specify a bit more in "gitcli.txt" about the way
we recommend and help to resolve the ambiguity around some git command
usage. The related disscussions locate at [1].
By the way, there are some issues with lowercase letters in the document,
which have been modified together.
[1] https://public-inbox.org/git/cover.1642129840.git.dyroneteng@gmail.com/
Signed-off-by: Teng Long <dyroneteng@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In git 2.35 l10n round 1, a space between two words was missing in the
message from "branch.c", and it was fixed by commit 68d924e1de (branch:
missing space fix at line 313, 2022-01-11).
Do a batch update for teams (bg, fr, id, sv, tr and zh_CN) that have
already completed their works on l10n round 1.
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
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Merge tag 'v2.35.0-rc1'
Git 2.35-rc1
* tag 'v2.35.0-rc1':
Git 2.35-rc1
reftable tests: avoid "int" overflow, use "uint64_t"
reftable: avoid initializing structs from structs
t1450-fsck: exec-bit is not needed to make loose object writable
refs API: use "failure_errno", not "errno"
Last minute fixes before -rc1
build: NonStop ships with an older zlib
packfile: fix off-by-one error in decoding logic
t/gpg: simplify test for unknown key
branch: missing space fix at line 313
fmt-merge-msg: prevent use-after-free with signed tags
cache.h: drop duplicate `ensure_full_index()` declaration
lazyload: use correct calling conventions
fetch: fix deadlock when cleaning up lockfiles in async signals
GCC 4.8.5 is the default system compiler on centos7/RHEL7.
This version requires -std=c99 to enable c99 support.
zlib 1.2.7 on centos7/rhel7 lacks uncompress2().
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
