The "struct object" type implements basic object
polymorphism. Individual instances are allocated as
concrete types (or as a union type that can store any
object), and a "struct object *" can be cast into its real
type after examining its "type" enum. This means it is
dangerous to have a type field that does not match the
allocation (e.g., setting the type field of a "struct blob"
to "OBJ_COMMIT" would mean that a reader might read past the
allocated memory).
In most of the current code this is not a problem; the first
thing we do after allocating an object is usually to set its
type field by passing it to create_object. However, the
virtual commits we create in merge-recursive.c do not ever
get their type set. This does not seem to have caused
problems in practice, though (presumably because we always
pass around a "struct commit" pointer and never even look at
the type).
We can fix this oversight and also make it harder for future
code to get it wrong by setting the type directly in the
object allocation functions.
This will also make it easier to fix problems with commit
index allocation, as we know that any object allocated by
alloc_commit_node will meet the invariant that an object
with an OBJ_COMMIT type field will have a unique index
number.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Because the allocator functions for tree, blobs, etc are all
very similar, we originally used a macro to avoid repeating
ourselves. Since the prior commit, though, the heavy lifting
is done by an inline helper function. The macro does still
save us a few lines, but at some readability cost. It
obfuscates the function definitions (and makes them hard to
find via grep).
Much worse, though, is the fact that it isn't used
consistently for all allocators. Somebody coming later may
be tempted to modify DEFINE_ALLOCATOR, but they would miss
alloc_commit_node, which is treated specially.
Let's just drop the macro and write everything out
explicitly.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
alloc.c: remove the alloc_raw_commit_node() function
In order to encapsulate the setting of the unique commit index, commit 969eba63 ("commit: push commit_index update into alloc_commit_node",
10-06-2014) introduced a (logically private) intermediary allocator
function. However, this function (alloc_raw_commit_node()) was declared
as a public function, which undermines its entire purpose.
Introduce an inline function, alloc_node(), which implements the main
logic of the allocator used by DEFINE_ALLOCATOR, and redefine the macro
in terms of the new function. In addition, use the new function in the
implementation of the alloc_commit_node() allocator, rather than the
intermediary allocator, which can now be removed.
Noticed by sparse ("symbol 'alloc_raw_commit_node' was not declared.
Should it be static?").
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move "commit->buffer" out of the in-core commit object and keep
track of their lengths. Use this to optimize the code paths to
validate GPG signatures in commit objects.
* jk/commit-buffer-length:
reuse cached commit buffer when parsing signatures
commit: record buffer length in cache
commit: convert commit->buffer to a slab
commit-slab: provide a static initializer
use get_commit_buffer everywhere
convert logmsg_reencode to get_commit_buffer
use get_commit_buffer to avoid duplicate code
use get_cached_commit_buffer where appropriate
provide helpers to access the commit buffer
provide a helper to set the commit buffer
provide a helper to free commit buffer
sequencer: use logmsg_reencode in get_message
logmsg_reencode: return const buffer
do not create "struct commit" with xcalloc
commit: push commit_index update into alloc_commit_node
alloc: include any-object allocations in alloc_report
replace dangerous uses of strbuf_attach
commit_tree: take a pointer/len pair rather than a const strbuf
If the middle step fails but leaves the directory (e.g., the
bug is that clean does not notice the failure), this
pollutes the test repo with an unremovable directory. Not
only does this cause further tests to fail, but it means
that "rm -rf" fails on the whole trash directory, and the
user has to intervene manually to even re-run the test script.
We can bump the "chmod 755" recovery to a test_when_finished
block to be sure that it always runs.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
gitk: Add visiblerefs option, which lists always-shown branches
When many branches contain a commit, the branches used to be shown in
the form "A, B and many more", where A, B can be master of current
HEAD. But there are more which might be interesting to always know about.
For example, "origin/master".
The new option, visiblerefs, is stored in ~/.gitk. It contains a list
of references which are always shown before "and many more" if they
contain the commit. By default it is `{"master"}', which is compatible
with previous behavior.
Signed-off-by: Max Kirillov <max@max630.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
105b5d3f ("gitk: Use mktemp -d to avoid predictable temporary
directories") introduced a dependency on mkdtemp, which is not
available on Windows.
Use the original temporary directory behavior when mkdtemp fails.
This makes the code use mkdtemp when available and gracefully
fallback to the existing behavior when it is not available.
Helped-by: Junio C Hamano <gitster@pobox.com> Helped-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Merge early parts from git://ozlabs.org/~paulus/gitk.git
* master~2:
gitk: Show staged submodules regardless of ignore config
gitk: Allow displaying time zones from author and commit dates timestamps
gitk: Switch to patch mode when searching for line origin
gitk: Replace SHA1 entry field on keyboard paste
l10n: Init Vietnamese translation
* git://repo.or.cz/git-gui:
git-gui: tolerate major version changes when comparing the git version
git-gui: show staged submodules regardless of ignore config
Some subcommands do not want to be aliased because of the side
effects that happens while the definitions of the aliases are looked
up from configuration system.
* nd/init-restore-env:
git potty: restore environments after alias expansion
Recent updates to "git repack" started to duplicate objects that
are in packfiles marked with .keep flag into the new packfile by
mistake.
* jk/repack-pack-keep-objects:
repack: s/write_bitmap/&s/ in code
repack: respect pack.writebitmaps
repack: do not accidentally pack kept objects by default
Merge branch 'jl/status-added-submodule-is-never-ignored' into maint
"git status" (and "git commit") behaved as if changes in a modified
submodule are not there if submodule.*.ignore configuration is set,
which was misleading. The configuration is only to unclutter diff
output during the course of development, and should not to hide
changes in the "status" output to cause the users forget to commit
them.
* jl/status-added-submodule-is-never-ignored:
commit -m: commit staged submodules regardless of ignore config
status/commit: show staged submodules regardless of ignore config
Merge branch 'ym/fix-opportunistic-index-update-race' into maint
"git status", even though it is a read-only operation, tries to
update the index with refreshed lstat(2) info to optimize future
accesses to the working tree opportunistically, but this could
race with a "read-write" operation that modify the index while it
is running. Detect such a race and avoid overwriting the index.
* ym/fix-opportunistic-index-update-race:
read-cache.c: verify index file before we opportunistically update it
wrapper.c: add xpread() similar to xread()
The autostash mode of "git rebase -i" did not restore the dirty
working tree state if the user aborted the interactive rebase by
emptying the insn sheet.
* rr/rebase-autostash-fix:
rebase -i: test "Nothing to do" case with autostash
rebase -i: handle "Nothing to do" case with autostash
"git log --exclude=<glob> --all | git shortlog" worked as expected,
but "git shortlog --exclude=<glob> --all", which is supposed to be
identical to the above pipeline, was not accepted at the command
line argument parser level.
* jc/shortlog-ref-exclude:
shortlog: allow --exclude=<glob> to be passed
"git remote rm" and "git remote prune" can involve removing many
refs at once, which is not a very efficient thing to do when very
many refs exist in the packed-refs file.
* jl/remote-rm-prune:
remote prune: optimize "dangling symref" check/warning
remote: repack packed-refs once when deleting multiple refs
remote rm: delete remote configuration as the last
Merge branch 'rs/pack-objects-no-unnecessary-realloc' into maint
"git pack-objects" unnecessarily copied the previous contents when
extending the hashtable, even though it will populate the table
from scratch anyway.
* rs/pack-objects-no-unnecessary-realloc:
pack-objects: use free()+xcalloc() instead of xrealloc()+memset()
Merge branch 'dt/merge-recursive-case-insensitive' into maint
On a case insensitive filesystem, merge-recursive incorrectly
deleted the file that is to be renamed to a name that is the same
except for case differences.
* dt/merge-recursive-case-insensitive:
mv: allow renaming to fix case on case insensitive filesystems
merge-recursive.c: fix case-changing merge bug
Merge branch 'nd/index-pack-one-fd-per-thread' into maint
We used to disable threaded "git index-pack" on platforms without
thread-safe pread(); use a different workaround for such
platforms to allow threaded "git index-pack".
* nd/index-pack-one-fd-per-thread:
index-pack: work around thread-unsafe pread()
Merge branch 'sk/spawn-less-case-insensitively-from-grep-O-i' into maint
"git grep -O" to show the lines that hit in the pager did not work
well with case insensitive search. We now spawn "less" with its
"-I" option when it is used as the pager (which is the default).
* sk/spawn-less-case-insensitively-from-grep-O-i:
git grep -O -i: if the pager is 'less', pass the '-I' option
"git gc --auto" was recently changed to run in the background to
give control back early to the end-user sitting in front of the
terminal, but it forgot that housekeeping involving reflogs should
be done without other processes competing for accesses to the refs.
* nd/daemonize-gc:
gc --auto: do not lock refs in the background
Merge branch 'jx/blame-align-relative-time' into maint
"git blame" miscounted number of columns needed to show localized
timestamps, resulting in jaggy left-side-edge of the source code
lines in its output.
* jx/blame-align-relative-time:
blame: dynamic blame_date_width for different locales
blame: fix broken time_buf paddings in relative timestamp
Merge branch 'jc/apply-ignore-whitespace' into maint
"--ignore-space-change" option of "git apply" ignored the spaces
at the beginning of line too aggressively, which is inconsistent
with the option of the same name "diff" and "git diff" have.
* jc/apply-ignore-whitespace:
apply --ignore-space-change: lines with and without leading whitespaces do not match
The completion scripts (in contrib/) did not know about quite a few
options that are common between "git merge" and "git pull", and a
couple of options unique to "git merge".
* jk/complete-merge-pull:
completion: add missing options for git-merge
completion: add a note that merge options are shared
The "%<(10,trunc)%s" pretty format specifier in the log family of
commands is used to truncate the string to a given length (e.g. 10
in the example) with padding to column-align the output, but did
not take into account that number of bytes and number of display
columns are different.
* as/pretty-truncate:
pretty.c: format string with truncate respects logOutputEncoding
t4205, t6006: add tests that fail with i18n.logOutputEncoding set
t4205 (log-pretty-format): use `tformat` rather than `format`
t4041, t4205, t6006, t7102: don't hardcode tested encoding value
t4205 (log-pretty-formats): don't hardcode SHA-1 in expected outputs
Merge branch 'jc/revision-dash-count-parsing' into maint
"git log -2master" is a common typo that shows two commits starting
from whichever random branch that is not 'master' that happens to
be checked out currently.
* jc/revision-dash-count-parsing:
revision: parse "git log -<count>" more carefully
Merge branch 'jk/report-fail-to-read-objects-better' into maint
Reworded the error message given upon a failure to open an existing
loose object file due to e.g. permission issues; it was reported as
the object being corrupt, but that is not quite true.
Tools that read diagnostic output in our standard error stream do
not want to see terminal control sequence (e.g. erase-to-eol).
Detect them by checking if the standard error stream is connected
to a tty.
* mn/sideband-no-ansi:
sideband.c: do not use ANSI control sequence on non-terminal
We used to unconditionally disable the pager in the pager process
we spawn to feed out output, but that prevented people who want to
run "less" within "less" from doing so.
* je/pager-do-not-recurse:
pager: do allow spawning pager recursively
* 'jc/test-lazy-prereq' (early part):
t3419: drop unnecessary NOT_EXPENSIVE pseudo-prerequisite
t3302: drop unnecessary NOT_EXPENSIVE pseudo-prerequisite
t3302: do not chdir around in the primary test process
t3302: coding style updates
test: turn USR_BIN_TIME into a lazy prerequisite
test: turn EXPENSIVE into a lazy prerequisite
* jc/fetch-pull-refmap:
docs: Explain the purpose of fetch's and pull's <refspec> parameter.
fetch: allow explicit --refmap to override configuration
fetch doc: add a section on configured remote-tracking branches
fetch doc: remove "short-cut" section
fetch doc: update refspec format description
fetch doc: on pulling multiple refspecs
fetch doc: remove notes on outdated "mixed layout"
fetch doc: update note on '+' in front of the refspec
fetch doc: move FETCH_HEAD material lower and add an example
fetch doc: update introductory part for clarity
* mt/send-email-cover-to-cc:
t9001: avoid non-portable '\n' with sed
test/send-email: to-cover, cc-cover tests
git-send-email: two new options: to-cover, cc-cover
"git log -2master" is a common typo that shows two commits starting
from whichever random branch that is not 'master' that happens to
be checked out currently.
* jc/revision-dash-count-parsing:
revision: parse "git log -<count>" more carefully
We often represent our strings as a counted string, i.e. a pair of
the pointer to the beginning of the string and its length, and the
string may not be NUL terminated to that length.
To compare a pair of such counted strings, unpack-trees.c and
read-cache.c implement their own name_compare() functions
identically. In addition, the cache_name_compare() function in
read-cache.c is nearly identical. The only difference is when one
string is the prefix of the other string, in which case
name_compare() returns -1/+1 to show which one is longer, and
cache_name_compare() returns the difference of the lengths to show
the same information.
Unify these three functions by using the implementation from
cache_name_compare(). This does not make any difference to the
existing and future callers, as they must be paying attention only
to the sign of the returned value (and not the magnitude) because
the original implementations of these two functions return values
returned by memcmp(3) when the one string is not a prefix of the
other string, and the only thing memcmp(3) guarantees its callers is
the sign of the returned value, not the magnitude.
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
name-hash.c: replace cache_name_compare() with memcmp(3)
The same_name() private function wants a quick-and-exact check to
see if they two names are byte-for-byte identical first and then
fall back to the slow path. Use memcmp(3) for the former to make it
clear that we do not want any "name" specific comparison.
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
SysV-derived implementation of "echo" interprets some backslash
sequences as special instruction, e.g. "echo 'ab\c'" shows an
incomplete line with 'a' and 'b' on it. Avoid using it when showing
a path-like values in the script.
The construct is error-prone; "test" being built-in in most modern
shells, the reason to avoid "test <cond> && test <cond>" spawning
one extra process by using a single "test <cond> -a <cond>" no
longer exists.
Signed-off-by: Elia Pinto <gitter.spiros@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Unicode Version 7.0 was released yesterday.
Run ./update_unicode.sh to update the zero_width table.
Note: the double_width is unchanged.
Signed-off-by: Torsten Bögershausen <tboegi@web.de> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow specifying only certain individual test pieces to be run
using a range notation (e.g. "t1234-test.sh --run='1-4 6 8 9-'").
* ib/test-selectively-run:
t0000-*.sh: fix the GIT_SKIP_TESTS sub-tests
test-lib: '--run' to run only specific tests
test-lib: tests skipped by GIT_SKIP_TESTS say so
test-lib: document short options in t/README
Allow remote-helper/fast-import based transport to rename the refs
while transferring the history.
* fc/remote-helper-refmap:
transport-helper: remove unnecessary strbuf resets
transport-helper: add support to delete branches
fast-export: add support to delete refs
fast-import: add support to delete refs
transport-helper: add support to push symbolic refs
transport-helper: add support for old:new refspec
fast-export: add new --refspec option
fast-export: improve argument parsing
"git gc --auto" was recently changed to run in the background to
give control back early to the end-user sitting in front of the
terminal, but it forgot that housekeeping involving reflogs should
be done without other processes competing for accesses to the refs.
* nd/daemonize-gc:
gc --auto: do not lock refs in the background
"git remote rm" and "git remote prune" can involve removing many
refs at once, which is not a very efficient thing to do when very
many refs exist in the packed-refs file.
* jl/remote-rm-prune:
remote prune: optimize "dangling symref" check/warning
remote: repack packed-refs once when deleting multiple refs
remote rm: delete remote configuration as the last
The completion code did not know about quite a few options that are
common between "git merge" and "git pull", and a couple of options
unique to "git merge".
* jk/complete-merge-pull:
completion: add missing options for git-merge
completion: add a note that merge options are shared
submodule.*.ignore and diff.ignoresubmodules are used to ignore all
submodule changes in "diff" output, but it can be confusing to
apply these configuration values to status and commit.
This is a backward-incompatible change, but should be so in a good
way (aka bugfix).
* jl/status-added-submodule-is-never-ignored:
commit -m: commit staged submodules regardless of ignore config
status/commit: show staged submodules regardless of ignore config
* cb/byte-order:
compat/bswap.h: fix endianness detection
compat/bswap.h: restore preference __BIG_ENDIAN over BIG_ENDIAN
compat/bswap.h: detect endianness on more platforms that don't use BYTE_ORDER
* as/pretty-truncate:
pretty.c: format string with truncate respects logOutputEncoding
t4205, t6006: add tests that fail with i18n.logOutputEncoding set
t4205 (log-pretty-format): use `tformat` rather than `format`
t4041, t4205, t6006, t7102: don't hardcode tested encoding value
t4205 (log-pretty-formats): don't hardcode SHA-1 in expected outputs