Code cleanup around struct_type_init() functions.
* ab/struct-init:
string-list.h users: change to use *_{nodup,dup}()
string-list.[ch]: add a string_list_init_{nodup,dup}()
dir.[ch]: replace dir_init() with DIR_INIT
*.c *_init(): define in terms of corresponding *_INIT macro
*.h: move some *_INIT to designated initializers
Code clean-up and leak plugging in "git bundle".
* ab/bundle-updates:
bundle: remove "ref_list" in favor of string-list.c API
bundle.c: use a temporary variable for OIDs and names
bundle cmd: stop leaking memory from parse_options_cmd_bundle()
Fill test gaps.
* ab/show-branch-tests:
show-branch tests: add missing tests
show-branch: don't <COLOR></RESET> for space characters
show-branch tests: modernize test code
show-branch tests: rename the one "show-branch" test file
Code recently added to support common ancestry negotiation during
"git push" did not sanity check its arguments carefully enough.
* ab/fetch-negotiate-segv-fix:
fetch: fix segfault in --negotiate-only without --negotiation-tip=*
fetch: document the --negotiate-only option
send-pack.c: move "no refs in common" abort earlier
Rewrite the backend for "diff -G/-S" to use pcre2 engine when
available.
* ab/pickaxe-pcre2: (22 commits)
xdiff-interface: replace discard_hunk_line() with a flag
xdiff users: use designated initializers for out_line
pickaxe -G: don't special-case create/delete
pickaxe -G: terminate early on matching lines
xdiff-interface: allow early return from xdiff_emit_line_fn
xdiff-interface: prepare for allowing early return
pickaxe -S: slightly optimize contains()
pickaxe: rename variables in has_changes() for brevity
pickaxe -S: support content with NULs under --pickaxe-regex
pickaxe: assert that we must have a needle under -G or -S
pickaxe: refactor function selection in diffcore-pickaxe()
perf: add performance test for pickaxe
pickaxe/style: consolidate declarations and assignments
diff.h: move pickaxe fields together again
pickaxe: die when --find-object and --pickaxe-all are combined
pickaxe: die when -G and --pickaxe-regex are combined
pickaxe tests: add missing test for --no-pickaxe-regex being an error
pickaxe tests: test for -G, -S and --find-object incompatibility
pickaxe tests: add test for "log -S" not being a regex
pickaxe tests: add test for diffgrep_consume() internals
...
Some more code and doc clarification around "git push".
* fc/push-simple-updates-cleanup:
push: don't get a full remote object
push: only check same_remote when needed
push: remove trivial function
push: remove redundant check
push: factor out the typical case
push: get rid of all the setup_push_* functions
push: trivial simplifications
push: make setup_push_* return the dst
push: only get the branch when needed
push: factor out null branch check
push: split switch cases
push: return immediately in trivial switch case
push: create new get_upstream_ref() helper
"git cat-file --batch-all-objects"" misbehaved when "--batch" is in
use and did not ask for certain object traits.
* zh/cat-file-batch-fix:
cat-file: merge two block into one
cat-file: handle trivial --batch format with --batch-all-objects
Make the codebase MSAN clean.
* ah/uninitialized-reads-fix:
builtin/checkout--worker: zero-initialise struct to avoid MSAN complaints
split-index: use oideq instead of memcmp to compare object_id's
bulk-checkin: make buffer reuse more obvious and safer
The recent --negotiate-only option would segfault in the call to
oid_array_for_each() in negotiate_using_fetch() unless one or more
--negotiation-tip=* options were provided.
All of the other tests for the feature combine both, but nothing was
checking this assumption, let's do that and add a test for it. Fixes a
bug in 9c1e657a8f (fetch: teach independent negotiation (no
packfile), 2021-05-04).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"dir.h" should have been included only once.
Signed-off-by: Atharva Raykar <raykar.ath@gmail.com>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Shourya Shukla <periperidip@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Depending on the chosen format of help pages, git-help uses function
show_man_page, show_info_page, or show_html_page. The first thing all
three functions do is to convert given `git_cmd` to a `page` using
function cmd_to_page.
Move the common part of these three functions to function cmd_help to
avoid code duplication.
Signed-off-by: Andrei Rybak <rybak.a.v@gmail.com>
Reviewed-by: Felipe Contreras <felipe.contreras@gmail.com>
Acked-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move away from the "struct ref_list" in bundle.c in favor of the
almost identical string-list.c API.
That API fits this use-case perfectly, but did not exist in its
current form when this code was added in 2e0afafebd (Add git-bundle:
move objects and references by archive, 2007-02-22), with hindsight we
could have used the path-list API, which later got renamed to
string-list. See 8fd2cb4069 (Extract helper bits from
c-merge-recursive work, 2006-07-25)
We need to change "name" to "string" and "oid" to "util" to make this
conversion, but other than that the APIs are pretty much identical for
what bundle.c made use of.
Let's also replace the memset(..,0,...) pattern with a more idiomatic
"INIT" macro, and finally add a *_release() function so to free the
allocated memory.
Before this the add_to_ref_list() would leak memory, now e.g. "bundle
list-heads" reports no memory leaks at all under valgrind.
In the bundle_header_init() function we're using a clever trick to
memcpy() what we'd get from the corresponding
BUNDLE_HEADER_INIT. There is a concurrent series to make use of that
pattern more generally, see [1].
1. https://lore.kernel.org/git/cover-0.5-00000000000-20210701T104855Z-avarab@gmail.com/
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix a memory leak from the prefix_filename() function introduced with
its use in 3b754eedd5 (bundle: use prefix_filename with bundle path,
2017-03-20).
As noted in that commit the leak was intentional as a part of being
sloppy about freeing resources just before we exit, I'm changing this
because I'll be fixing other memory leaks in the bundle API (including
the library version) in subsequent commits. It's easier to reason
about those fixes if valgrind runs cleanly at the end without any
leaks whatsoever.
An earlier version of this change[1] went out of its way to not leak
memory on the die() codepaths here, but doing so will only avoid
reports of potential leaks under heap-only leak trackers such as
valgrind, not the SANITIZE=leak mode.
Avoiding those leaks as well might be useful to enable us to run
cleanly under the likes of valgrind in the future. But for now the
relative verbosity of the resulting code, and the fact that we don't
have some valgrind or SANITIZE=leak mode as part of our CI (it's only
run ad-hoc, see [2]), means we're not worrying about that for now.
1. https://lore.kernel.org/git/87v95vdxrc.fsf@evledraar.gmail.com/
2. https://lore.kernel.org/git/87czsv2idy.fsf@evledraar.gmail.com/
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove the dir_init() function and replace it with a DIR_INIT
macro. In many cases in the codebase we need to initialize things with
a function for good reasons, e.g. needing to call another function on
initialization. The "dir_init()" function was not one such case, and
could trivially be replaced with a more idiomatic macro initialization
pattern.
The only place where we made use of its use of memset() was in
dir_clear() itself, which resets the contents of an an existing struct
pointer. Let's use the new "memcpy() a 'blank' struct on the stack"
idiom to do that reset.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change the colored output introduced in ab07ba2a24 (show-branch: color
the commit status signs, 2009-04-22) to not color and reset each
individual space character we use for padding. The intent is to color
just the "!", "+" etc. characters.
This makes the output easier to test, so let's do that now. The test
would be much more verbose without a color/reset for each space
character. Since the coloring cycles through colors we previously had
a "rainbow of space characters".
In theory this breaks things for anyone who's relying on the exact
colored output of show-branch, in practice I'd think anyone parsing it
isn't actively turning on the colored output.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Two spaces unaligned to anything is not part of the coding-style. A
single tab is.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There's no need to store ran_ff. Now it's obvious from the conditionals.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently "git pull --rebase" takes a shortcut in the case a
fast-forward merge is possible; run_merge() is called with --ff-only.
However, "git merge" didn't have an --autostash option, so, when "git
pull --rebase --autostash" was called *and* the fast-forward merge
shortcut was taken, then the pull failed.
This was fixed in commit f15e7cf5cc (pull: ff --rebase --autostash
works in dirty repo, 2017-06-01) by simply skipping the fast-forward
merge shortcut.
Later on "git merge" learned the --autostash option [a03b55530a
(merge: teach --autostash option, 2020-04-07)], and so did "git pull"
[d9f15d37f1 (pull: pass --autostash to merge, 2020-04-07)].
Therefore it's not necessary to skip the fast-forward merge shortcut
anymore when called with --rebase --autostash.
Let's always take the fast-forward merge shortcut by essentially
reverting f15e7cf5cc.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
report_result() sends a struct to the parent process, but that struct
would contain uninitialised padding bytes. Running this code under MSAN
rightly triggers a warning - but we don't particularly care about this
warning because we control the receiving code, and we therefore know
that those padding bytes won't be read on the receiving end.
We could simply suppress this warning under MSAN with the approporiate
ifdef'd attributes, but a less intrusive solution is to 0-initialise the
struct, which guarantees that the padding will also be initialised.
Interestingly, in the error-case branch, we only try to copy the first
two members of pc_item_result, by copying only PC_ITEM_RESULT_BASE_SIZE
bytes. However PC_ITEM_RESULT_BASE_SIZE is defined as
'offsetof(the_last_member)', which means that we're copying padding bytes
after the end of the second last member. We could avoid doing this by
redefining PC_ITEM_RESULT_BASE_SIZE as
'offsetof(second_last_member) + sizeof(second_last_member)', but there's
no huge benefit to doing so (and this patch silences the MSAN warning in
this scenario either way).
MSAN output from t2080 (partially interleaved due to the
parallel work :) ):
Uninitialized bytes in __interceptor_write at offset 12 inside [0x7fff37d83408, 160)
==23279==WARNING: MemorySanitizer: use-of-uninitialized-value
Uninitialized bytes in __interceptor_write at offset 12 inside [0x7ffdb8a07ec8, 160)
==23280==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0xd5ac28 in xwrite /home/ahunt/git/git/wrapper.c:256:8
#1 0xd5b327 in write_in_full /home/ahunt/git/git/wrapper.c:311:21
#2 0xb0a8c4 in do_packet_write /home/ahunt/git/git/pkt-line.c:221:6
#3 0xb0a5fd in packet_write /home/ahunt/git/git/pkt-line.c:242:6
#4 0x4f7441 in report_result /home/ahunt/git/git/builtin/checkout--worker.c:69:2
#5 0x4f6be6 in worker_loop /home/ahunt/git/git/builtin/checkout--worker.c💯3
#6 0x4f68d3 in cmd_checkout__worker /home/ahunt/git/git/builtin/checkout--worker.c:143:2
#7 0x4a1e76 in run_builtin /home/ahunt/git/git/git.c:461:11
#8 0x49e1e7 in handle_builtin /home/ahunt/git/git/git.c:714:3
#9 0x4a0c08 in run_argv /home/ahunt/git/git/git.c:781:4
#10 0x49d5a8 in cmd_main /home/ahunt/git/git/git.c:912:19
#11 0x7974da in main /home/ahunt/git/git/common-main.c:52:11
#12 0x7f8778114349 in __libc_start_main (/lib64/libc.so.6+0x24349)
#13 0x421bd9 in _start /home/abuild/rpmbuild/BUILD/glibc-2.26/csu/../sysdeps/x86_64/start.S:120
Uninitialized value was created by an allocation of 'res' in the stack frame of function 'report_result'
#0 0x4f72c0 in report_result /home/ahunt/git/git/builtin/checkout--worker.c:55
SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/ahunt/git/git/wrapper.c:256:8 in xwrite
Exiting
#0 0xd5ac28 in xwrite /home/ahunt/git/git/wrapper.c:256:8
#1 0xd5b327 in write_in_full /home/ahunt/git/git/wrapper.c:311:21
#2 0xb0a8c4 in do_packet_write /home/ahunt/git/git/pkt-line.c:221:6
#3 0xb0a5fd in packet_write /home/ahunt/git/git/pkt-line.c:242:6
#4 0x4f7441 in report_result /home/ahunt/git/git/builtin/checkout--worker.c:69:2
#5 0x4f6be6 in worker_loop /home/ahunt/git/git/builtin/checkout--worker.c💯3
#6 0x4f68d3 in cmd_checkout__worker /home/ahunt/git/git/builtin/checkout--worker.c:143:2
#7 0x4a1e76 in run_builtin /home/ahunt/git/git/git.c:461:11
#8 0x49e1e7 in handle_builtin /home/ahunt/git/git/git.c:714:3
#9 0x4a0c08 in run_argv /home/ahunt/git/git/git.c:781:4
#10 0x49d5a8 in cmd_main /home/ahunt/git/git/git.c:912:19
#11 0x7974da in main /home/ahunt/git/git/common-main.c:52:11
#12 0x7f2749a0e349 in __libc_start_main (/lib64/libc.so.6+0x24349)
#13 0x421bd9 in _start /home/abuild/rpmbuild/BUILD/glibc-2.26/csu/../sysdeps/x86_64/start.S:120
Uninitialized value was created by an allocation of 'res' in the stack frame of function 'report_result'
#0 0x4f72c0 in report_result /home/ahunt/git/git/builtin/checkout--worker.c:55
SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/ahunt/git/git/wrapper.c:256:8 in xwrite
Signed-off-by: Andrzej Hunt <andrzej@ahunt.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "-m" option in "git log -m" that does not specify which format,
if any, of diff is desired did not have any visible effect; it now
implies some form of diff (by default "--patch") is produced.
* so/log-m-implies-p:
diff-merges: let "-m" imply "-p"
diff-merges: rename "combined_imply_patch" to "merges_imply_patch"
stash list: stop passing "-m" to "git log"
git-svn: stop passing "-m" to "git rev-list"
diff-merges: move specific diff-index "-m" handling to diff-index
t4013: test "git diff-index -m"
t4013: test "git diff-tree -m"
t4013: test "git log -m --stat"
t4013: test "git log -m --raw"
t4013: test that "-m" alone has no effect in "git log"
Recent "git clone" left a temporary directory behind when the
transport layer returned an failure.
* jk/clone-clean-upon-transport-error:
clone: clean up directory after transport_fetch_refs() failure
Fix typos in documentation, code comments, and RelNotes which repeat
various words. In trivial cases, just delete the duplicated word and
rewrap text, if needed. Reword the affected sentence in
Documentation/RelNotes/1.8.4.txt for it to make sense.
Signed-off-by: Andrei Rybak <rybak.a.v@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change various cmd_* functions that claim to return an "int" to use
"return" instead of exit() to indicate an exit code. These were not
marked with NORETURN, and by directly exit()-ing we'll skip the
cleanup git.c would otherwise do (e.g. closing fd's, erroring if we
can't). See run_builtin() in git.c.
In the case of shell.c and sh-i18n--envsubst.c this was the result of
an incomplete migration to using a cmd_main() in 3f2e2297b9 (add an
extra level of indirection to main(), 2016-07-01).
This was spotted by SunCC 12.5 on Solaris 10 (gcc210 on the gccfarm).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are two "if (opt->all_objects)" blocks next
to each other, merge them into one to provide better
readability.
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: ZheNing Hu <adlternative@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The --batch code to print an object assumes we found out the type of
the object from calling oid_object_info_extended(). This is true for
the default format, but even in a custom format, we manually modify
the object_info struct to ask for the type.
This assumption was broken by 845de33a5b (cat-file: avoid noop calls
to sha1_object_info_extended, 2016-05-18). That commit skips the call
to oid_object_info_extended() entirely when --batch-all-objects is in
use, and the custom format does not include any placeholders that
require calling it.
Or when the custom format only include placeholders like %(objectname) or
%(rest), oid_object_info_extended() will not get the type of the object.
This results in an error when we try to confirm that the type didn't
change:
$ git cat-file --batch=batman --batch-all-objects
batman
fatal: object 000023961a changed type!?
and also has other subtle effects (e.g., we'd fail to stream a blob,
since we don't realize it's a blob in the first place).
We can fix this by flipping the order of the setup. The check for "do
we need to get the object info" must come _after_ we've decided
whether we need to look up the type.
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: ZheNing Hu <adlternative@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
All we need to know is that their names are the same.
Additionally this might be easier to parse for some since
remote_for_branch is more descriptive than remote_get(NULL).
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It's a single line that is used in a single place, and the variable has
the same name as the function.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If fetch_remote is NULL (i.e. the branch remote is invalid), then it
can't possibly be same as remote, which can't be NULL.
The check is redundant, and so is the extra variable.
Also, fix the Yoda condition: we want to check if remote is the same as
the branch remote, not the other way around.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Only override dst on the odd case.
This allows a preemptive break on the `simple` case.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Their code is much simpler now and can move into the parent function.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
All of the setup_push_* functions are appending a refspec. Do this only
once on the parent function.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
No need to do it in every single function.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We want all the cases that don't do anything with a branch first, and
then the rest. That way we will be able to get the branch and die if
there's a problem in the parent function, instead of inside the function
of each mode.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There's no need to break when nothing else will be executed.
Will help next patches.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This code is duplicated among multiple functions.
No functional changes.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano
Ævar Arnfjörð Bjarmason
Atharva Raykar
Andrei Rybak
Felipe Contreras
Andrzej Hunt
ZheNing Hu