Michael J Gruber [Mon, 27 Mar 2017 16:50:05 +0000 (18:50 +0200)]
describe: localize debug output fully
git describe --debug localizes all debug messages but not the terms
head, lightweight, annotated that it outputs for the candidates.
Localize them, too.
Signed-off-by: Michael J Gruber <git@grubix.eu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Mon, 27 Mar 2017 17:59:27 +0000 (10:59 -0700)]
Merge branch 'sb/describe-broken'
"git describe --dirty" dies when it cannot be determined if the
state in the working tree matches that of HEAD (e.g. broken
repository or broken submodule). The command learned a new option
"git describe --broken" to give "$name-broken" (where $name is the
description of HEAD) in such a case.
* sb/describe-broken:
builtin/describe: introduce --broken flag
Junio C Hamano [Mon, 27 Mar 2017 17:59:27 +0000 (10:59 -0700)]
Merge branch 'sb/push-options-via-transport'
Recently we started passing the "--push-options" through the
external remote helper interface; now the "smart HTTP" remote
helper understands what to do with the passed information.
* sb/push-options-via-transport:
remote-curl: allow push options
send-pack: send push options correctly in stateless-rpc case
Junio C Hamano [Mon, 27 Mar 2017 17:59:26 +0000 (10:59 -0700)]
Merge branch 'km/t1400-modernization'
Code clean-up.
* km/t1400-modernization:
t1400: use test_when_finished for cleanup
t1400: remove a set of unused output files
t1400: use test_path_is_* helpers
t1400: set core.logAllRefUpdates in "logged by touch" tests
t1400: rename test descriptions to be unique
Junio C Hamano [Mon, 27 Mar 2017 17:59:26 +0000 (10:59 -0700)]
Merge branch 'jk/prefix-filename'
Code clean-up with minor bugfixes.
* jk/prefix-filename:
bundle: use prefix_filename with bundle path
prefix_filename: simplify windows #ifdef
prefix_filename: return newly allocated string
prefix_filename: drop length parameter
prefix_filename: move docstring to header file
hash-object: fix buffer reuse with --path in a subdirectory
Junio C Hamano [Fri, 24 Mar 2017 20:07:38 +0000 (13:07 -0700)]
Merge branch 'jk/sha1dc'
The "detect attempt to create collisions" variant of SHA-1
implementation by Marc Stevens (CWI) and Dan Shumow (Microsoft)
has been integrated and made the default.
* jk/sha1dc:
Makefile: make DC_SHA1 the default
t0013: add a basic sha1 collision detection test
Makefile: add DC_SHA1 knob
sha1dc: disable safe_hash feature
sha1dc: adjust header includes for git
sha1dc: add collision-detecting sha1 implementation
The default location "~/.git-credential-cache/socket" for the
socket used to communicate with the credential-cache daemon has
been moved to "~/.cache/git/credential/socket".
* dl/credential-cache-socket-in-xdg-cache:
credential-cache: add tests for XDG functionality
credential-cache: use XDG_CACHE_HOME for socket
path.c: add xdg_cache_home
Junio C Hamano [Fri, 24 Mar 2017 19:57:54 +0000 (12:57 -0700)]
Merge branch 'jc/config-case-cmdline-take-2' into maint
The code to parse "git -c VAR=VAL cmd" and set configuration
variable for the duration of cmd had two small bugs, which have
been fixed.
This supersedes jc/config-case-cmdline topic that has been discarded.
* jc/config-case-cmdline-take-2:
config: use git_config_parse_key() in git_config_parse_parameter()
config: move a few helper functions up
Junio C Hamano [Fri, 24 Mar 2017 19:57:53 +0000 (12:57 -0700)]
Merge branch 'jk/grep-no-index-fix' into maint
The code to parse the command line "git grep <patterns>... <rev>
[[--] <pathspec>...]" has been cleaned up, and a handful of bugs
have been fixed (e.g. we used to check "--" if it is a rev).
* jk/grep-no-index-fix:
grep: treat revs the same for --untracked as for --no-index
grep: do not diagnose misspelt revs with --no-index
grep: avoid resolving revision names in --no-index case
grep: fix "--" rev/pathspec disambiguation
grep: re-order rev-parsing loop
grep: do not unnecessarily query repo for "--"
grep: move thread initialization a little lower
Junio C Hamano [Fri, 24 Mar 2017 19:57:53 +0000 (12:57 -0700)]
Merge branch 'jn/remote-helpers-with-git-dir' into maint
"git ls-remote" and "git archive --remote" are designed to work
without being in a directory under Git's control. However, recent
updates revealed that we randomly look into a directory called
.git/ without actually doing necessary set-up when working in a
repository. Stop doing so.
* jn/remote-helpers-with-git-dir:
remote helpers: avoid blind fall-back to ".git" when setting GIT_DIR
remote: avoid reading $GIT_DIR config in non-repo
Junio C Hamano [Fri, 24 Mar 2017 19:57:52 +0000 (12:57 -0700)]
Merge branch 'jk/push-deadlock-regression-fix' into maint
"git push" had a handful of codepaths that could lead to a deadlock
when unexpected error happened, which has been fixed.
* jk/push-deadlock-regression-fix:
send-pack: report signal death of pack-objects
send-pack: read "unpack" status even on pack-objects failure
send-pack: improve unpack-status error messages
send-pack: use skip_prefix for parsing unpack status
send-pack: extract parsing of "unpack" response
receive-pack: fix deadlock when we cannot create tmpdir
Michael J Gruber [Fri, 24 Mar 2017 14:01:36 +0000 (15:01 +0100)]
mailmap: use Michael J Gruber's new address
Map both old addresses to the new, hopefully more permanent one.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Michael J Gruber <git@grubix.eu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Santiago Torres [Thu, 23 Mar 2017 22:28:47 +0000 (18:28 -0400)]
t7004, t7030: fix here-doc syntax errors
Jan Palus noticed that some here-doc are spelled incorrectly,
resulting the entire remainder of the test snippet being slurped
into the "expect" file as if it were data, e.g. in this sequence
the last command of the test is "cat" that sends everything to
'expect' and succeeds.
Fixing these issues in t7004 and t7030 reveals that "git tag -v"
and "git verify-tag" with their --format option do not work as the
test was expecting originally. Instead of showing both valid tags
and tags with incorrect signatures on their output, tags that do not
pass verification are omitted from the output. Another breakage that
is uncovered is that these tests must be restricted to environment
where gpg is available.
Arguably, that is a safer behaviour, and because the format
specifiers like %(tag) do not have a way to show if the signature
verifies correctly, the command with the --format option cannot be
used to get a list of tags annotated with their signature validity
anyway.
For now, let's fix the here-doc syntax, update the expectation to
match the reality, and update the test prerequisite.
Maybe later when we extend the --format language available to "git
tag -v" and "git verify-tag" to include things like "%(gpg:status)",
we may want to change the behaviour so that piping a list of tag
names into
becomes a good way to produce such a list, but that is a separate
topic.
Noticed-by: Jan Palus <jan.palus@gmail.com> Helped-by: Jeff King <peff@peff.net> Signed-off-by: Santiago Torres <santiago@nyu.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Thu, 23 Mar 2017 05:43:18 +0000 (22:43 -0700)]
tests: lint for run-away here-doc
We found a few run-away here documents that are started with an
end-of-here-doc marker that is incorrectly spelled, e.g.
git some command >actual &&
cat <<EOF >expect
...
EOF &&
test_cmp expect actual
which ends up slurping the entire remainder of the script as if it
were the data. Often the command that gets misused like this exits
without failure (e.g. "cat" in the above example), which makes the
command appear to work, without ever executing the remainder of the
test.
Piggy-back on the test that catches &&-chain breakage to detect this
case as well.
Brandon Williams [Thu, 23 Mar 2017 17:02:33 +0000 (10:02 -0700)]
sequencer: fix missing newline
When using rebase --interactive where one of the lines is marked as
'edit' this is the resulting output:
Stopped at ec3b9c4... stuffYou can amend the commit now, with
git commit --amend
Once you are satisfied with your changes, run
git rebase --continue
A newline character is missing at the end of the "Stopped at ..." line and
before the "You can amend ..." line. This patch fixes the malformed output by
adding the missing newline character to the end of the "Stopped at ..." line.
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Brandon Williams [Wed, 22 Mar 2017 22:22:00 +0000 (15:22 -0700)]
remote-curl: allow push options
Teach remote-curl to understand push options and to be able to convey
them across HTTP.
Signed-off-by: Brandon Williams <bmwill@google.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Brandon Williams [Wed, 22 Mar 2017 22:21:59 +0000 (15:21 -0700)]
send-pack: send push options correctly in stateless-rpc case
"git send-pack --stateless-rpc" puts each request in a sequence of pkt-lines
followed by a flush-pkt. The push option code forgot about this and sends push
options and their terminating delimiter as ordinary pkt-lines that get their
length header stripped off by remote-curl before being sent to the server.
The result is multiple malformed requests, which the server rejects.
Fortunately send-pack --stateless-rpc already is aware of this "pkt-line within
pkt-line" framing for the update commands that precede push options. Handle
push options the same way.
Helped-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Brandon Williams <bmwill@google.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Wed, 22 Mar 2017 22:12:07 +0000 (15:12 -0700)]
t7406: correct test case for submodule-update initial population
There are three issues with the test:
* The syntax of the here-doc was wrong, such that the entire test was
sucked into the here-doc, which is why the test succeeded.
* The variable $submodulesha1 was not expanded as it was inside a quoted
here text. We do not want to quote EOF marker for this.
* The redirection from the git command to the output file for comparison
was wrong as the -C operator from git doesn't apply to the redirect path.
Also we're interested in stderr of that command.
Noticed-by: Jan Palus <jan.palus@gmail.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Stefan Beller [Tue, 21 Mar 2017 22:57:18 +0000 (15:57 -0700)]
builtin/describe: introduce --broken flag
git-describe tells you the version number you're at, or errors out, e.g.
when you run it outside of a repository, which may happen when downloading
a tar ball instead of using git to obtain the source code.
To keep this property of only erroring out, when not in a repository,
severe (submodule) errors must be downgraded to reporting them gently
instead of having git-describe error out completely.
To achieve that a flag '--broken' is introduced, which is in the same
vein as '--dirty' but uses an actual child process to check for dirtiness.
When that child dies unexpectedly, we'll append '-broken' instead of
'-dirty'.
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Stefan Beller [Tue, 21 Mar 2017 21:08:02 +0000 (14:08 -0700)]
t3600: rename test to describe its functionality
This was an oversight in 55856a35b2 (rm: absorb a submodules git dir
before deletion, 2016-12-27), as the body of the test changed without
adapting the test subject.
Signed-off-by: Stefan Beller <sbeller@google.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Tue, 21 Mar 2017 22:07:18 +0000 (15:07 -0700)]
Merge branch 'nd/conditional-config-include'
The configuration file learned a new "includeIf.<condition>.path"
that includes the contents of the given path only when the
condition holds. This allows you to say "include this work-related
bit only in the repositories under my ~/work/ directory".
* nd/conditional-config-include:
config: add conditional include
config.txt: reflow the second include.path paragraph
config.txt: clarify multiple key values in include.path
Junio C Hamano [Tue, 21 Mar 2017 22:07:17 +0000 (15:07 -0700)]
Merge branch 'jk/pack-name-cleanups'
Code clean-up.
* jk/pack-name-cleanups:
index-pack: make pointer-alias fallbacks safer
replace snprintf with odb_pack_name()
odb_pack_keep(): stop generating keepfile name
sha1_file.c: make pack-name helper globally accessible
move odb_* declarations out of git-compat-util.h
Junio C Hamano [Tue, 21 Mar 2017 22:07:17 +0000 (15:07 -0700)]
Merge branch 'mg/prompt-describe-tags'
The command line prompt (in contrib/) learned a new 'tag' style
that can be specified with GIT_PS1_DESCRIBE_STYLE, to describe a
detached HEAD with "git describe --tags".
* mg/prompt-describe-tags:
git-prompt: add a describe style for any tags
Junio C Hamano [Tue, 21 Mar 2017 22:07:16 +0000 (15:07 -0700)]
Merge branch 'jk/rev-parse-cleanup'
Code clean-up.
* jk/rev-parse-cleanup:
rev-parse: simplify parsing of ref options
rev-parse: add helper for parsing "--foo/--foo="
rev-parse: use skip_prefix when parsing options
Junio C Hamano [Tue, 21 Mar 2017 22:03:30 +0000 (15:03 -0700)]
Merge branch 'jh/send-email-one-cc' into maint
"Cc:" on the trailer part does not have to conform to RFC strictly,
unlike in the e-mail header. "git send-email" has been updated to
ignore anything after '>' when picking addresses, to allow non-address
cruft like " # stable 4.4" after the address.
* jh/send-email-one-cc:
send-email: only allow one address per body tag
Junio C Hamano [Tue, 21 Mar 2017 22:03:29 +0000 (15:03 -0700)]
Merge branch 'jk/show-branch-lift-name-len-limit' into maint
"git show-branch" expected there were only very short branch names
in the repository and used a fixed-length buffer to hold them
without checking for overflow.
* jk/show-branch-lift-name-len-limit:
show-branch: use skip_prefix to drop magic numbers
show-branch: store resolved head in heap buffer
show-branch: drop head_len variable
Junio C Hamano [Tue, 21 Mar 2017 22:03:28 +0000 (15:03 -0700)]
Merge branch 'jk/tempfile-ferror-fclose-confusion' into maint
A caller of tempfile API that uses stdio interface to write to
files may ignore errors while writing, which is detected when
tempfile is closed (with a call to ferror()). By that time, the
original errno that may have told us what went wrong is likely to
be long gone and was overwritten by an irrelevant value.
close_tempfile() now resets errno to EIO to make errno at least
predictable.
* jk/tempfile-ferror-fclose-confusion:
tempfile: set errno to a known value before calling ferror()
Junio C Hamano [Tue, 21 Mar 2017 22:03:28 +0000 (15:03 -0700)]
Merge branch 'rl/remote-allow-missing-branch-name-merge' into maint
"git remote rm X", when a branch has remote X configured as the
value of its branch.*.remote, tried to remove branch.*.remote and
branch.*.merge and failed if either is unset.
* rl/remote-allow-missing-branch-name-merge:
remote: ignore failure to remove missing branch.<name>.merge
Junio C Hamano [Tue, 21 Mar 2017 22:03:28 +0000 (15:03 -0700)]
Merge branch 'dt/gc-ignore-old-gc-logs' into maint
A "gc.log" file left by a backgrounded "gc --auto" disables further
automatic gc; it has been taught to run at least once a day (by
default) by ignoring a stale "gc.log" file that is too old.
* dt/gc-ignore-old-gc-logs:
gc: ignore old gc.log files
Junio C Hamano [Tue, 21 Mar 2017 22:03:27 +0000 (15:03 -0700)]
Merge branch 'jt/upload-pack-error-report' into maint
"git upload-pack", which is a counter-part of "git fetch", did not
report a request for a ref that was not advertised as invalid.
This is generally not a problem (because "git fetch" will stop
before making such a request), but is the right thing to do.
* jt/upload-pack-error-report:
upload-pack: report "not our ref" to client
Junio C Hamano [Tue, 21 Mar 2017 22:03:26 +0000 (15:03 -0700)]
Merge branch 'jc/diff-populate-filespec-size-only-fix' into maint
"git diff --quiet" relies on the size field in diff_filespec to be
correctly populated, but diff_populate_filespec() helper function
made an incorrect short-cut when asked only to populate the size
field for paths that need to go through convert_to_git() (e.g. CRLF
conversion).
* jc/diff-populate-filespec-size-only-fix:
diff: do not short-cut CHECK_SIZE_ONLY check in diff_populate_filespec()
Jeff King [Tue, 21 Mar 2017 01:31:27 +0000 (21:31 -0400)]
bundle: use prefix_filename with bundle path
We may take the path to a bundle file as an argument, and
need to adjust the filename based on the prefix we
discovered while setting up the git directory. We do so
manually into a fixed-size buffer, but using
prefix_filename() is the normal way.
Besides being more concise, there are two subtle
improvements:
1. The original inserted a "/" between the two paths, even
though the "prefix" argument always has the "/"
appended. That means that:
cd subdir && git bundle verify ../foo.bundle
was looking at (and reporting) subdir//../foo.bundle.
Harmless, but ugly. Using prefix_filename() gets this
right.
2. The original checked for an absolute path by looking
for a leading '/'. It should have been using
is_absolute_path(), which also covers more cases on
Windows (backslashes and dos drive prefixes).
But it's easier still to just pass the name to
prefix_filename(), which handles this case
automatically.
Note that we'll just leak the resulting buffer in the name
of simplicity, since it needs to last through the duration
of the program anyway.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jeff King [Tue, 21 Mar 2017 01:30:41 +0000 (21:30 -0400)]
prefix_filename: simplify windows #ifdef
The prefix_filename function used to do an early return when
there was no prefix on non-Windows platforms, but always
allocated on Windows so that it could call convert_slashes().
Now that the function always allocates, we can unify the
logic and make convert_slashes() the only conditional part.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jeff King [Tue, 21 Mar 2017 01:28:49 +0000 (21:28 -0400)]
prefix_filename: return newly allocated string
The prefix_filename() function returns a pointer to static
storage, which makes it easy to use dangerously. We already
fixed one buggy caller in hash-object recently, and the
calls in apply.c are suspicious (I didn't dig in enough to
confirm that there is a bug, but we call the function once
in apply_all_patches() and then again indirectly from
parse_chunk()).
Let's make it harder to get wrong by allocating the return
value. For simplicity, we'll do this even when the prefix is
empty (and we could just return the original file pointer).
That will cause us to allocate sometimes when we wouldn't
otherwise need to, but this function isn't called in
performance critical code-paths (and it already _might_
allocate on any given call, so a caller that cares about
performance is questionable anyway).
The downside is that the callers need to remember to free()
the result to avoid leaking. Most of them already used
xstrdup() on the result, so we know they are OK. The
remainder have been converted to use free() as appropriate.
I considered retaining a prefix_filename_unsafe() for cases
where we know the static lifetime is OK (and handling the
cleanup is awkward). This is only a handful of cases,
though, and it's not worth the mental energy in worrying
about whether the "unsafe" variant is OK to use in any
situation.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jeff King [Tue, 21 Mar 2017 01:22:28 +0000 (21:22 -0400)]
prefix_filename: drop length parameter
This function takes the prefix as a ptr/len pair, but in
every caller the length is exactly strlen(ptr). Let's
simplify the interface and just take the string. This saves
callers specifying it (and in some cases handling a NULL
prefix).
In a handful of cases we had the length already without
calling strlen, so this is technically slower. But it's not
likely to matter (after all, if the prefix is non-empty
we'll allocate and copy it into a buffer anyway).
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jeff King [Tue, 21 Mar 2017 01:20:42 +0000 (21:20 -0400)]
hash-object: fix buffer reuse with --path in a subdirectory
The hash-object command uses prefix_filename() without
duplicating its return value. Since that function returns a
static buffer, the value is overwritten by subsequent calls.
This can cause incorrect results when we use --path along
with hashing a file by its relative path, both of which need
to call prefix_filename(). We overwrite the filename
computed for --path, effectively ignoring it.
We can fix this by calling xstrdup on the return value. Note
that we don't bother freeing the "vpath" instance, as it
remains valid until the program exit.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Kyle Meyer [Tue, 21 Mar 2017 00:56:16 +0000 (20:56 -0400)]
t1400: use test_when_finished for cleanup
Move cleanup lines that occur after test blocks into
test_when_finished calls within the test bodies. Don't move cleanup
lines that seem to be related to mutiple tests rather than a single
test.
Signed-off-by: Kyle Meyer <kyle@kyleam.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Kyle Meyer [Tue, 21 Mar 2017 00:56:15 +0000 (20:56 -0400)]
t1400: remove a set of unused output files
This test case redirects stdout and stderr to output files, but,
unlike the other cases of redirection in the t1400 tests, these files
are not examined downstream. Remove the redirection so that the
output is visible when running the tests verbosely.
Signed-off-by: Kyle Meyer <kyle@kyleam.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Kyle Meyer [Tue, 21 Mar 2017 00:56:13 +0000 (20:56 -0400)]
t1400: set core.logAllRefUpdates in "logged by touch" tests
A group of update-ref tests verifies that logs are created when either
the log file for the ref already exists or core.logAllRefUpdates is
"true". However, when the default for core.logAllRefUpdates was
changed in 0bee59186 (Enable reflogs by default in any repository with
a working directory., 2006-12-14), the setup for the tests was not
updated. As a result, the "logged by touch" tests would pass even if
the log file did not exist (i.e., if "--create-reflog" was removed
from the first "git update-ref" call).
Update the "logged by touch" tests to disable core.logAllRefUpdates
explicitly so that the behavior does not depend on the default value.
While we're here, update the "logged by config" tests to use
test_config() rather than setting core.logAllRefUpdates to "true"
outside of the tests.
Signed-off-by: Kyle Meyer <kyle@kyleam.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano [Mon, 20 Mar 2017 20:56:00 +0000 (13:56 -0700)]
Merge branch 'js/difftool-builtin'
"git difftool --dir-diff" used to die a controlled death giving a
"fatal" message when encountering a locally modified symbolic link,
but it started segfaulting since v2.12. This has been fixed.
* js/difftool-builtin:
difftool: handle modified symlinks in dir-diff mode
t7800: cleanup cruft left behind by tests
t7800: remove whitespace before redirect
push: mention "push.default=tracking" in the documentation
Change the documentation for push.tracking=* to re-include a mention
of what "tracking" does.
The "tracking" option was renamed to "upstream" back in 53c4031 ("push.default: Rename 'tracking' to 'upstream'", 2011-02-16),
this section was then subsequently rewritten in 87a70e4 ("config doc:
rewrite push.default section", 2013-06-19) to remove any mention of
"tracking".
Maybe we should just warn or die nowadays if this option is in the
config, but I had some old config of mine use this option, I'd
forgotten that it was a synonym, and nothing in git's documentation
mentioned that.
That's bad, either we shouldn't support it at all, or we should
document what it does. This patch does the latter.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-commit.txt: list post-rewrite in HOOKS section
The hook was added in a86ed83cce (Merge branch 'tr/notes-display' -
2010-03-24), which updated githooks.txt but not git-commit.txt.
git-commit.txt was later updated in e858af6d50 (commit: document a
couple of options - 2012-06-08). Since this commit focused on command
line options, this section was probably forgotten.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
SZEDER Gábor [Sat, 18 Mar 2017 18:24:08 +0000 (19:24 +0100)]
pickaxe: fix segfault with '-S<...> --pickaxe-regex'
'git {log,diff,...} -S<...> --pickaxe-regex' can segfault as a result
of out-of-bounds memory reads.
diffcore-pickaxe.c:contains() looks for all matches of the given regex
in a buffer in a loop, advancing the buffer pointer to the end of the
last match in each iteration. When we switched to REG_STARTEND in b7d36ffca (regex: use regexec_buf(), 2016-09-21), we started passing
the size of that buffer to the regexp engine, too. Unfortunately,
this buffer size is never updated on subsequent iterations, and as the
buffer pointer advances on each iteration, this "bufptr+bufsize"
points past the end of the buffer. This results in segmentation
fault, if that memory can't be accessed. In case of 'git log' it can
also result in erroneously listed commits, if the memory past the end
of buffer is accessible and happens to contain data matching the
regex.
Reduce the buffer size on each iteration as the buffer pointer is
advanced, thus maintaining the correct end of buffer location.
Furthermore, make sure that the buffer pointer is not dereferenced in
the control flow statements when we already reached the end of the
buffer.
The new test is flaky, I've never seen it fail on my Linux box even
without the fix, but this is expected according to db5dfa3 (regex:
-G<pattern> feeds a non NUL-terminated string to regexec() and fails,
2016-09-21). However, it did fail on Travis CI with the first (and
incomplete) version of the fix, and based on that commit message I
would expect the new test without the fix to fail most of the time on
Windows.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jeff King [Fri, 17 Mar 2017 23:20:04 +0000 (19:20 -0400)]
run-command: fix segfault when cleaning forked async process
Callers of the run-command API may mark a child as
"clean_on_exit"; it gets added to a list and killed when the
main process dies. Since commit 46df6906f
(execv_dashed_external: wait for child on signal death,
2017-01-06), we respect an extra "wait_after_clean" flag,
which we expect to find in the child_process struct.
When Git is built with NO_PTHREADS, we start "struct
async" processes by forking rather than spawning a thread.
The resulting processes get added to the cleanup list but
they don't have a child_process struct, and the cleanup
function ends up dereferencing NULL.
We should notice this case and assume that the processes do
not need to be waited for (i.e., the same behavior they had
before 46df6906f).
Reported-by: Brandon Williams <bmwill@google.com> Signed-off-by: Jeff King <peff@peff.net> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
René Scharfe [Fri, 17 Mar 2017 23:52:28 +0000 (00:52 +0100)]
shortlog: don't set after_subject to an empty string
The string after_subject is added to a strbuf by pp_title_line() if
it's not NULL. Adding an empty string has the same effect as not
adding anything, but the latter is easier, so don't bother changing
the context member from NULL to "".
Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
SZEDER Gábor [Sat, 18 Mar 2017 16:14:00 +0000 (17:14 +0100)]
tests: make the 'test_pause' helper work in non-verbose mode
When the 'test_pause' helper function invokes the shell mid-test, it
explicitly redirects the shell's stdout and stderr to file descriptors
3 and 4, which are the stdout and stderr of the tests (i.e. where they
would be connected anyway without those redirections). These file
descriptors are only attached to the terminal in verbose mode, hence
the restriction of 'test_pause' to work only with '-v'.
Redirect the shell's stdout and stderr to the test environment's
original stdout and stderr, allowing it to work properly even in
non-verbose mode, and the restriction can be lifted.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
SZEDER Gábor [Sat, 18 Mar 2017 16:13:59 +0000 (17:13 +0100)]
tests: create an interactive gdb session with the 'debug' helper
The 'debug' test helper is supposed to facilitate debugging by running
a command of the test suite under gdb. Unfortunately, its usefulness
is severely limited, because that gdb session is not interactive,
since the test's, and thus gdb's standard input is redirected from
/dev/null (for a good reason, see 781f76b15 (test-lib: redirect stdin
of tests, 2011-12-15)).
Redirect gdb's standard file descriptors from/to the test
environment's stdin, stdout and stderr in the 'debug' helper, thus
creating an interactive gdb session (even in non-verbose mode), which
is much, much more useful.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
René Scharfe [Fri, 17 Mar 2017 22:02:13 +0000 (23:02 +0100)]
receive-pack: simplify run_update_post_hook()
Instead of counting the arguments to see if there are any and then
building the full command use a single loop and add the hook command
just before the first argument. This reduces duplication and overall
code size.
Signed-off-by: Rene Scharfe <l.s.r@web.de> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
projects / thirdparty / git.git / log
