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The "libify sequencer" topic stopped passing the die_on_error option
to hold_locked_index(), and this lost an error message from "git
merge --ff-only $commit" when there are competing updates in
progress.
The command still exits with a non-zero status, but that is not of
much help for an interactive user. The last thing the command says
is "Updating $from..$to". We used to follow it with a big error
message that makes it clear that "merge --ff-only" did not succeed.
What is sad is that we should have noticed this regression while
reviewing the change. It was clear that the update to the
checkout_fast_forward() function made a failing hold_locked_index()
silent, but the only caller of the checkout_fast_forward() function
had this comment:
if (checkout_fast_forward(from, to, 1))
- exit(128); /* the callee should have complained already */
+ return -1; /* the callee should have complained already */
which clearly contradicted the assumption X-<.
Add a new option LOCK_REPORT_ON_ERROR that can be passed instead of
LOCK_DIE_ON_ERROR to the hold_lock*() family of functions and teach
checkout_fast_forward() to use it to fix this regression.
After going thourgh all calls to hold_lock*() family of functions
that used to pass LOCK_DIE_ON_ERROR but were modified to pass 0 in
the "libify sequencer" topic "git show --first-parent 2a4062a4a8",
it appears that this is the only one that has become silent. Many
others used to give detailed report that talked about "there may be
competing Git process running" but with the series merged they now
only give a single liner "Unable to lock ...", some of which may
have to be tweaked further, but at least they say something, unlike
the one this patch fixes.
Reported-by: Robbie Iannucci <iannucci@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Instead of dying there, let the caller high up in the callchain
notice the error and handle it (by dying, still).
The only callers of checkout_fast_forward(), cmd_merge(),
pull_into_void(), cmd_pull() and sequencer's fast_forward_to(),
already check the return value and handle it appropriately. With this
step, we make it notice an error return from this function.
So this is a safe conversion to make checkout_fast_forward()
callable from new callers that want it not to die, without changing
the external behaviour of anything existing.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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struct object is one of the major data structures dealing with object
IDs. Convert it to use struct object_id instead of an unsigned char
array. Convert get_object_hash to refer to the new member as well.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Jeff King <peff@peff.net>
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Move the interface declaration for the functions in lockfile.c from
cache.h to a new file, lockfile.h. Add #includes where necessary (and
remove some redundant includes of cache.h by files that already
include builtin.h).
Move the documentation of the lock_file state diagram from lockfile.c
to the new header file.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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An experiment to use two files (the base file and incremental
changes relative to it) to represent the index to reduce I/O cost
of rewriting a large index when only small part of the working tree
changes.
* nd/split-index: (32 commits)
t1700: new tests for split-index mode
t2104: make sure split index mode is off for the version test
read-cache: force split index mode with GIT_TEST_SPLIT_INDEX
read-tree: note about dropping split-index mode or index version
read-tree: force split-index mode off on --index-output
rev-parse: add --shared-index-path to get shared index path
update-index --split-index: do not split if $GIT_DIR is read only
update-index: new options to enable/disable split index mode
split-index: strip pathname of on-disk replaced entries
split-index: do not invalidate cache-tree at read time
split-index: the reading part
split-index: the writing part
read-cache: mark updated entries for split index
read-cache: save deleted entries in split index
read-cache: mark new entries for split index
read-cache: split-index mode
read-cache: save index SHA-1 after reading
entry.c: update cache_changed if refresh_cache is set in checkout_entry()
cache-tree: mark istate->cache_changed on prime_cache_tree()
cache-tree: mark istate->cache_changed on cache tree update
...
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This is shorter, and avoids a rather complicated set of
allocation and free steps.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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These functions are called in sequencer.c, which is part of
libgit.a. This makes libgit.a potentially require builtin/merge.c for
external git commands.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
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