| Commit message (Collapse) | Author | Age | Files | Lines |
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The "ort" merge backend saw one bugfix for a crash that happens
when inner merge gets killed, and assorted code clean-ups.
* en/ort-inner-merge-error-fix:
merge-ort: fix missing early return
merge-ort: convert more error() cases to path_msg()
merge-ort: upon merge abort, only show messages causing the abort
merge-ort: loosen commented requirements
merge-ort: clearer propagation of failure-to-function from merge_submodule
merge-ort: fix type of local 'clean' var in handle_content_merge ()
merge-ort: maintain expected invariant for priv member
merge-ort: extract handling of priv member into reusable function
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One of the conversions in f19b9165 (merge-ort: convert more error()
cases to path_msg(), 2024-06-19) accidentally lost the early return.
Restore it.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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merge_submodule() stores errors using path_msg(), whereas other call
sites make use of the error() function. This is inconsistent, and
moving towards path_msg() seems more friendly for libification efforts
since it will allow the caller to determine whether the error messages
need to be printed.
Note that this deferred handling of error messages changes the error
message in a recursive merge from
error: failed to execute internal merge
to
From inner merge: error: failed to execute internal merge
which provides a little more information about the error which may be
useful. Since the recursive merge strategy still only shows the older
error, we had to adjust the new testcase introduced a few commits ago to
just search for the older message somewhere in the output.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When something goes wrong enough that we need to abort early and not
even attempt merging the remaining files, it probably does not make
sense to report conflicts messages for the subset of files we processed
before hitting the fatal error. Instead, only show the messages
associated with paths where we hit the fatal error. Also, print these
messages to stderr rather than stdout.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The comment above type_short_descriptions claimed that the order had to
match what was found in the conflict_info_and_types enum. Since
type_short_descriptions uses designated initializers, the order should
not actually matter; I am guessing that positional initializers may have
been under consideration when that comment was added, but the comment
was not updated when designated initializers were chosen.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The 'clean' member variable is somewhat of a tri-state (1 = clean, 0 =
conflicted, -1 = failure-to-determine), but we often like to think of
it as binary (ignoring the possibility of a negative value) and use
constructs like '!clean' to reflect this. However, these constructs
can make codepaths more difficult to understand, unless we handle the
negative case early and return pre-emptively; do that in
handle_content_merge() to make the code a bit easier to read.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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handle_content_merge() returns an int. Every caller of
handle_content_merge() expects an int. However, we declare a local
variable 'clean' that we use for the return value to be unsigned. To
make matters worse, we also assign 'clean' the return value of
merge_submodule() in one codepath, which is defined to return an int.
It seems that the only reason to have 'clean' be unsigned was to allow a
cutesy bit manipulation operation to be well-defined. Fix the type of
the 'clean' local in handle_content_merge().
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The calling convention for the merge machinery is
One call to init_merge_options()
One or more calls to merge_incore_[non]recursive()
One call to merge_finalize()
(possibly indirectly via merge_switch_to_result())
Both merge_switch_to_result() and merge_finalize() expect
opt->priv == NULL && result->priv != NULL
which is supposed to be set up by our move_opt_priv_to_result_priv()
function. However, two codepaths dealing with error cases did not
execute this necessary logic, which could result in assertion failures
(or, if assertions were compiled out, could result in segfaults). Fix
the oversight and add a test that would have caught one of these
problems.
While at it, also tighten an existing test for a non-recursive merge
to verify that it fails with appropriate status. Most merge tests in
the testsuite check either for success or conflicts; those testing for
neither are rare and it is good to ensure they support the invariant
assumed by builtin/merge.c in this comment:
/*
* The backend exits with 1 when conflicts are
* left to be resolved, with 2 when it does not
* handle the given merge at all.
*/
So, explicitly check for the exit status of 2 in these cases.
Reported-by: Matt Cree <matt.cree@gearset.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In preparation for a subsequent commit which will ensure we do not
forget to maintain our invariants for the priv member in error
codepaths, extract the necessary functionality out into a separate
function. This change is cosmetic at this point, and introduces no
changes beyond an extra assertion sanity check.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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More memory leaks have been plugged.
* ps/leakfixes-more: (29 commits)
builtin/blame: fix leaking ignore revs files
builtin/blame: fix leaking prefixed paths
blame: fix leaking data for blame scoreboards
line-range: plug leaking find functions
merge: fix leaking merge bases
builtin/merge: fix leaking `struct cmdnames` in `get_strategy()`
sequencer: fix memory leaks in `make_script_with_merges()`
builtin/clone: plug leaking HEAD ref in `wanted_peer_refs()`
apply: fix leaking string in `match_fragment()`
sequencer: fix leaking string buffer in `commit_staged_changes()`
commit: fix leaking parents when calling `commit_tree_extended()`
config: fix leaking "core.notesref" variable
rerere: fix various trivial leaks
builtin/stash: fix leak in `show_stash()`
revision: free diff options
builtin/log: fix leaking commit list in git-cherry(1)
merge-recursive: fix memory leak when finalizing merge
builtin/merge-recursive: fix leaking object ID bases
builtin/difftool: plug memory leaks in `run_dir_diff()`
object-name: free leaking object contexts
...
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When calling either the recursive or the ORT merge machineries we need
to provide a list of merge bases. The ownership of that parameter is
then implicitly transferred to the callee, which is somewhat fishy.
Furthermore, that list may leak in some cases where the merge machinery
runs into an error, thus causing a memory leak.
Refactor the code such that we stop transferring ownership. Instead, the
merge machinery will now create its own local copies of the passed in
list as required if they need to modify the list. Free the list at the
callsites as required.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Use of the `the_repository` variable is deprecated nowadays, and we
slowly but steadily convert the codebase to not use it anymore. Instead,
callers should be passing down the repository to work on via parameters.
It is hard though to prove that a given code unit does not use this
variable anymore. The most trivial case, merely demonstrating that there
is no direct use of `the_repository`, is already a bit of a pain during
code reviews as the reviewer needs to manually verify claims made by the
patch author. The bigger problem though is that we have many interfaces
that implicitly rely on `the_repository`.
Introduce a new `USE_THE_REPOSITORY_VARIABLE` macro that allows code
units to opt into usage of `the_repository`. The intent of this macro is
to demonstrate that a certain code unit does not use this variable
anymore, and to keep it from new dependencies on it in future changes,
be it explicit or implicit
For now, the macro only guards `the_repository` itself as well as
`the_hash_algo`. There are many more known interfaces where we have an
implicit dependency on `the_repository`, but those are not guarded at
the current point in time. Over time though, we should start to add
guards as required (or even better, just remove them).
Define the macro as required in our code units. As expected, most of our
code still relies on the global variable. Nearly all of our builtins
rely on the variable as there is no way yet to pass `the_repository` to
their entry point. For now, declare the macro in "biultin.h" to keep the
required changes at least a little bit more contained.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git checkout --conflict=bad" reported a bad conflictStyle as if it
were given to a configuration variable; it has been corrected to
report that the command line option is bad.
* pw/checkout-conflict-errorfix:
checkout: fix interaction between --conflict and --merge
checkout: cleanup --conflict=<style> parsing
merge options: add a conflict style member
merge-ll: introduce LL_MERGE_OPTIONS_INIT
xdiff-interface: refactor parsing of merge.conflictstyle
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Add a conflict_style member to `struct merge_options` and `struct
ll_merge_options` to allow callers to override the default conflict
style. This will be used in the next commit.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Introduce a macro to initialize `struct ll_merge_options` in preparation
for the next commit that will add a new member that needs to be
initialized to a non-zero value.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Work to support a repository that work with both SHA-1 and SHA-256
hash algorithms has started.
* eb/hash-transition: (30 commits)
t1016-compatObjectFormat: add tests to verify the conversion between objects
t1006: test oid compatibility with cat-file
t1006: rename sha1 to oid
test-lib: compute the compatibility hash so tests may use it
builtin/ls-tree: let the oid determine the output algorithm
object-file: handle compat objects in check_object_signature
tree-walk: init_tree_desc take an oid to get the hash algorithm
builtin/cat-file: let the oid determine the output algorithm
rev-parse: add an --output-object-format parameter
repository: implement extensions.compatObjectFormat
object-file: update object_info_extended to reencode objects
object-file-convert: convert commits that embed signed tags
object-file-convert: convert commit objects when writing
object-file-convert: don't leak when converting tag objects
object-file-convert: convert tag objects when writing
object-file-convert: add a function to convert trees between algorithms
object: factor out parse_mode out of fast-import and tree-walk into in object.h
cache: add a function to read an OID of a specific algorithm
tag: sign both hashes
commit: export add_header_signature to support handling signatures on tags
...
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To make it possible for git ls-tree to display the tree encoded
in the hash algorithm of the oid specified to git ls-tree, update
init_tree_desc to take as a parameter the oid of the tree object.
Update all callers of init_tree_desc and init_tree_desc_gently
to pass the oid of the tree object.
Use the oid of the tree object to discover the hash algorithm
of the oid and store that hash algorithm in struct tree_desc.
Use the hash algorithm in decode_tree_entry and
update_tree_entry_internal to handle reading a tree object encoded in
a hash algorithm that differs from the repositories hash algorithm.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Make sure failure return from merge_bases_many() is properly caught.
* js/merge-base-with-missing-commit:
merge-ort/merge-recursive: do report errors in `merge_submodule()`
merge-recursive: prepare for `merge_submodule()` to report errors
commit-reach(repo_get_merge_bases_many_dirty): pass on errors
commit-reach(repo_get_merge_bases_many): pass on "missing commits" errors
commit-reach(get_octopus_merge_bases): pass on "missing commits" errors
commit-reach(repo_get_merge_bases): pass on "missing commits" errors
commit-reach(get_merge_bases_many_0): pass on "missing commits" errors
commit-reach(merge_bases_many): pass on "missing commits" errors
commit-reach(paint_down_to_common): start reporting errors
commit-reach(paint_down_to_common): prepare for handling shallow commits
commit-reach(repo_in_merge_bases_many): report missing commits
commit-reach(repo_in_merge_bases_many): optionally expect missing commits
commit-reach(paint_down_to_common): plug two memory leaks
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In 24876ebf68b (commit-reach(repo_in_merge_bases_many): report missing
commits, 2024-02-28), I taught `merge_submodule()` to handle errors
reported by `repo_in_merge_bases_many()`.
However, those errors were not passed through to the callers. That was
unintentional, and this commit remedies that.
Note that `find_first_merges()` can now also return -1 (because it
passes through that return value from `repo_in_merge_bases()`), and this
commit also adds the forgotten handling for that scenario.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Acked-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The `merge_bases_many()` function was just taught to indicate parsing
errors, and now the `repo_get_merge_bases()` function (which is also
surfaced via the `repo_get_merge_bases()` macro) is aware of that, too.
Naturally, there are a lot of callers that need to be adjusted now, too.
Next step: adjust the callers of `get_octopus_merge_bases()`.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some functions in Git's source code follow the convention that returning
a negative value indicates a fatal error, e.g. repository corruption.
Let's use this convention in `repo_in_merge_bases()` to report when one
of the specified commits is missing (i.e. when `repo_parse_commit()`
reports an error).
Also adjust the callers of `repo_in_merge_bases()` to handle such
negative return values.
Note: As of this patch, errors are returned only if any of the specified
merge heads is missing. Over the course of the next patches, missing
commits will also be reported by the `paint_down_to_common()` function,
which is called by `repo_in_merge_bases_many()`, and those errors will
be properly propagated back to the caller at that stage.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git merge-tree" has learned that the three trees involved in the
3-way merge only need to be trees, not necessarily commits.
* js/merge-tree-3-trees:
fill_tree_descriptor(): mark error message for translation
cache-tree: avoid an unnecessary check
Always check `parse_tree*()`'s return value
t4301: verify that merge-tree fails on missing blob objects
merge-ort: do check `parse_tree()`'s return value
merge-tree: fail with a non-zero exit code on missing tree objects
merge-tree: accept 3 trees as arguments
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Otherwise we may easily run into serious crashes: For example, if we run
`init_tree_desc()` directly after a failed `parse_tree()`, we are
accessing uninitialized data or trying to dereference `NULL`.
Note that the `parse_tree()` function already takes care of showing an
error message. The `parse_tree_indirectly()` and
`repo_get_commit_tree()` functions do not, therefore those latter call
sites need to show a useful error message while the former do not.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The previous commit fixed a bug where a missing tree was reported, but
not treated as an error.
This patch addresses the same issue for the remaining two callers of
`parse_tree()`.
This change is not accompanied by a regression test because the code in
question is only reached at the `checkout` stage, i.e. after the merge
has happened (and therefore the tree objects could only be missing if
the disk had gone bad in that short time window, or something similarly
tricky to recreate in the test suite).
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When `git merge-tree` encounters a missing tree object, it should error
out and not continue quietly as if nothing had happened.
However, as of time of writing, `git merge-tree` _does_ continue, and
then offers the empty tree as result.
Let's fix this.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add a new advice type 'submoduleMergeConflict' for the error message
shown when a non-trivial submodule conflict is encountered, which
was added in 4057523a40 (submodule merge: update conflict error
message, 2022-08-04). That commit mentions making this message an
advice as possible future work. The message can now be disabled
with the advice mechanism.
Update the tests as the expected message now appears on stderr instead
of stdout.
Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Rewrite //-comments to /* comments */ in files whose comments
prevalently use the latter.
* jc/comment-style-fixes:
reftable/pq_test: comment style fix
merge-ort.c: comment style fix
builtin/worktree: comment style fixes
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In 70c70de616 (refs: complete list of special refs, 2023-12-14) we have
inrtoduced a new `is_special_ref()` function that classifies some refs
as being special. The rule is that special refs are exclusively read and
written via the filesystem directly, whereas normal refs exclucsively go
via the refs API.
The intent of that commit was to record the status quo so that we know
to route reads of such special refs consistently. Eventually, the list
should be reduced to its bare minimum of refs which really are special,
namely FETCH_HEAD and MERGE_HEAD.
Follow up on this promise and convert the AUTO_MERGE ref to become a
normal pseudo-ref by using the refs API to both read and write it
instead of accessing the filesystem directly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Each of these were checked with
gcc -E -I. ${SOURCE_FILE} | grep ${HEADER_FILE}
to ensure that removing the direct inclusion of the header actually
resulted in that header no longer being included at all (i.e. that
no other header pulled it in transitively).
...except for a few cases where we verified that although the header
was brought in transitively, nothing from it was directly used in
that source file. These cases were:
* builtin/credential-cache.c
* builtin/pull.c
* builtin/send-pack.c
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Typofix.
* wx/merge-ort-comment-typofix:
merge-ort.c: fix typo 'neeed' to 'needed'
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Signed-off-by: 王常新 <wchangxin824@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix "git merge-tree" to stop segfaulting when the --attr-source
option is used.
* jc/merge-ort-attr-index-fix:
merge-ort: initialize repo in index state
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initialize_attr_index() does not initialize the repo member of
attr_index. Starting in 44451a2e5e (attr: teach "--attr-source=<tree>"
global option to "git", 2023-05-06), this became a problem because
istate->repo gets passed down the call chain starting in
git_check_attr(). This gets passed all the way down to
replace_refs_enabled(), which segfaults when accessing r->gitdir.
Fix this by initializing the repository in the index state.
Signed-off-by: John Cai <johncai86@gmail.com>
Helped-by: Christian Couder <christian.couder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As noted in CodingGuidelines, error messages should not be capitalized.
Fix up a few of these that were copied verbatim from merge-recursive to
match our modern style.
We'll likewise fix up the matching ones from merge-recursive. We care a
bit less there, since the hope is that it will eventually go away. But
besides being the right thing to do in the meantime, it is necessary for
t6406 to pass both with and without GIT_TEST_MERGE_ALGORITHM set (one of
our CI jobs sets it to "recursive", which will use the merge-recursive.c
code). An alternative would be to use "grep -i" in the test to check
the message, but it's nice for the test suite to be be more exact (we'd
notice if the capitalization fix regressed).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The merge_options parameter has never been used since the function was
introduced in 64aceb6d73 (merge-ort: add code to check for whether
cached renames can be reused, 2021-05-20). In theory some merge options
might impact our decisions here, but that has never been the case so
far.
Let's drop it to appease -Wunused-parameter; it would be easy to add
back later if we need to (there is only one caller).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This function takes three trees representing the merge base and both
sides of the merge, but never looks at any of them. This is due to
f78cf97617 (merge-ort: call diffcore_rename() directly, 2021-02-14).
Prior to that commit, we passed pairs of trees to diff_tree_oid(). But
after that commit, we collect a custom diff_queue for each pair in the
merge_options struct, and just run diffcore_rename() on the result. So
the function does not need to know about the original trees at all
anymore.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This function doesn't look at its merge_options parameter. It used to
pass it down to err(), but that function no longer exists (and didn't
look at "opt" anyway). We can drop it here.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The merge-ort code has an err() function, but it's really just error()
in disguise. It differs in two ways:
1. It takes a "struct merge_options" argument. But the function
completely ignores it! We can simply remove it.
2. It formats the error string into a strbuf, prepending "error: ",
and then feeds the result into error(). But this is wrong! The
error() function already adds the prefix, so we end up with:
error: error: Failed to execute internal merge
So let's just drop this function entirely and call error() directly, as
the functions are otherwise identical (note that they both always return
-1).
Presumably nobody noticed the bogus messages because they are quite hard
to trigger (they are mostly internal errors reading and writing
objects). However, one easy trigger is a custom merge driver which dies
by signal; we have a test already here, but we were not checking the
contents of stderr.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The vast majority of files including object-store.h did not need dir.h
nor khash.h. Split the header into two files, and let most just depend
upon object-store-ll.h, while letting the two callers that need it
depend on the full object-store.h.
After this patch:
$ git grep -h include..object-store | sort | uniq -c
2 #include "object-store.h"
129 #include "object-store-ll.h"
Diff best viewed with `--color-moved`.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A long term (but rather minor) pet-peeve of mine was the name
ll-merge.[ch]. I thought it made it harder to realize what stuff was
related to merging when I was working on the merge machinery and trying
to improve it.
Further, back in d1cbe1e6d8a ("hash-ll.h: split out of hash.h to remove
dependency on repository.h", 2023-04-22), we have split the portions of
hash.h that do not depend upon repository.h into a "hash-ll.h" (due to
the recommendation to use "ll" for "low-level" in its name[1], but which
I used as a suffix precisely because of my distaste for "ll-merge").
When we discussed adding additional "*-ll.h" files, a request was made
that we use "ll" consistently as either a prefix or a suffix. Since it
is already in use as both a prefix and a suffix, the only way to do so
is to rename some files.
Besides my distaste for the ll-merge.[ch] name, let me also note that
the files
ll-fsmonitor.h, ll-hash.h, ll-merge.h, ll-object-store.h, ll-read-cache.h
would have essentially nothing to do with each other and make no sense
to group. But giving them the common "ll-" prefix would group them. Using
"-ll" as a suffix thus seems just much more logical to me. Rename
ll-merge.[ch] to merge-ll.[ch] to achieve this consistency, and to
ensure we get a more logical grouping of files.
[1] https://lore.kernel.org/git/kl6lsfcu1g8w.fsf@chooglen-macbookpro.roam.corp.google.com/
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This also made it clear that several .c files that depended upon path.h
were missing a #include for it; add the missing includes while at it.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Since this header showed up in some places besides just #include
statements, update/clean-up/remove those other places as well.
Note that compat/fsmonitor/fsm-path-utils-darwin.c previously got
away with violating the rule that all files must start with an include
of git-compat-util.h (or a short-list of alternate headers that happen
to include it first). This change exposed the violation and caused it
to stop building correctly; fix it by having it include
git-compat-util.h first, as per policy.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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For the functions defined in read-cache.c, move their declarations from
cache.h to a new header, read-cache-ll.h. Also move some related inline
functions from cache.h to read-cache.h. The purpose of the
read-cache-ll.h/read-cache.h split is that about 70% of the sites don't
need the inline functions and the extra headers they include.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Note in particular that this reverses the decision made in 118a2e8bde0
("cache: move ensure_full_index() to cache.h", 2021-04-01).
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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More header clean-up.
* en/header-split-cache-h-part-2: (22 commits)
reftable: ensure git-compat-util.h is the first (indirect) include
diff.h: reduce unnecessary includes
object-store.h: reduce unnecessary includes
commit.h: reduce unnecessary includes
fsmonitor: reduce includes of cache.h
cache.h: remove unnecessary headers
treewide: remove cache.h inclusion due to previous changes
cache,tree: move basic name compare functions from read-cache to tree
cache,tree: move cmp_cache_name_compare from tree.[ch] to read-cache.c
hash-ll.h: split out of hash.h to remove dependency on repository.h
tree-diff.c: move S_DIFFTREE_IFXMIN_NEQ define from cache.h
dir.h: move DTYPE defines from cache.h
versioncmp.h: move declarations for versioncmp.c functions from cache.h
ws.h: move declarations for ws.c functions from cache.h
match-trees.h: move declarations for match-trees.c functions from cache.h
pkt-line.h: move declarations for pkt-line.c functions from cache.h
base85.h: move declarations for base85.c functions from cache.h
copy.h: move declarations for copy.c functions from cache.h
server-info.h: move declarations for server-info.c functions from cache.h
packfile.h: move pack_window and pack_entry from cache.h
...
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Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A small API fix to the ort merge strategy backend.
* en/ort-finalize-after-0-merges-fix:
merge-ort: fix calling merge_finalize() with no intermediate merge
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If some code sets up the data structures for a merge, but then never
actually performs one before calling merge_finalize(), then
merge_finalize() wouldn't notice that result->priv was NULL and
return early, resulting in following that NULL pointer and getting
a segfault. There is currently no code in the git codebase that does
this, but this issue was found during testing of some proposed patches
that had the following structure:
struct merge_options merge_opt;
struct merge_result result;
init_merge_options(&merge_opt, the_repository);
memset(&result, 0, sizeof(result));
<do N merges, for some value of N>
merge_finalize(&merge_opt, &result);
where some flags could cause the code to have N=0, i.e. doing no merges.
Add a check for result->priv being NULL and return early to avoid a
segfault in these kinds of cases.
While at it, ensure the FREE_AND_NULL() in the function does something
useful with the nulling aspect, namely sets result->priv to NULL rather
than a mere temporary.
Reported-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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