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The error messages shown when the branch command is misused
by supplying it wrong number of parameters wasn't meaningful.
That's because it used the the phrase "too many branches"
assuming all parameters to be "valid" branch names. It's not
always the case as exemplified below,
$ git branch
foo
* master
$ git branch -m foo foo old
fatal: too many branches for a rename operation
Change the messages to be more general thus making no assumptions
about the "parameters".
Signed-off-by: Kaartic Sivaraam <kaarticsivaraam91196@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix regression of "git add -p" for users with "color.ui = always"
in their configuration, by merging the topic below and adjusting it
for the 'master' front.
* jk/ui-color-always-to-auto:
t7301: use test_terminal to check color
t4015: use --color with --color-moved
color: make "always" the same as "auto" in config
provide --color option for all ref-filter users
t3205: use --color instead of color.branch=always
t3203: drop "always" color test
t6006: drop "always" color config tests
t7502: use diff.noprefix for --verbose test
t7508: use test_terminal for color output
t3701: use test-terminal to collect color output
t4015: prefer --color to -c color.diff=always
test-terminal: set TERM=vt100
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* jk/ui-color-always-to-auto-maint:
color: make "always" the same as "auto" in config
provide --color option for all ref-filter users
t3205: use --color instead of color.branch=always
t3203: drop "always" color test
t6006: drop "always" color config tests
t7502: use diff.noprefix for --verbose test
t7508: use test_terminal for color output
t3701: use test-terminal to collect color output
t4015: prefer --color to -c color.diff=always
test-terminal: set TERM=vt100
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It can be handy to use `--color=always` (or it's synonym
`--color`) on the command-line to convince a command to
produce color even if it's stdout isn't going to the
terminal or a pager.
What's less clear is whether it makes sense to set config
variables like color.ui to `always`. For a one-shot like:
git -c color.ui=always ...
it's potentially useful (especially if the command doesn't
directly support the `--color` option). But setting `always`
in your on-disk config is much muddier, as you may be
surprised when piped commands generate colors (and send them
to whatever is consuming the pipe downstream).
Some people have done this anyway, because:
1. The documentation for color.ui makes it sound like
using `always` is a good idea, when you almost
certainly want `auto`.
2. Traditionally not every command (and especially not
plumbing) respected color.ui in the first place. So
the confusion came up less frequently than it might
have.
The situation changed in 136c8c8b8f (color: check color.ui
in git_default_config(), 2017-07-13), which negated point
(2): now scripts using only plumbing commands (like
add-interactive) are broken by this setting.
That commit was fixing real issues (e.g., by making
`color.ui=never` work, since `auto` is the default), so we
don't want to just revert it. We could turn `always` into a
noop in plumbing commands, but that creates a hard-to-explain
inconsistency between the plumbing and other commands.
Instead, let's just turn `always` into `auto` for all config.
This does break the "one-shot" config shown above, but again,
we're probably better to have simple and consistent rules than
to try to special-case command-line config.
There is one place where `always` should retain its meaning:
on the command line, `--color=always` should continue to be
the same as `--color`, overriding any isatty checks. Since the
command-line parser also depends on git_config_colorbool(), we
can use the existence of the "var" string to deterine whether
we are serving the command-line or the config.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When ref-filter learned about want_color() in 11b087adfd
(ref-filter: consult want_color() before emitting colors,
2017-07-13), it became useful to be able to turn colors off
and on for specific commands. For git-branch, you can do so
with --color/--no-color.
But for git-for-each-ref and git-tag, the other users of
ref-filter, you have no option except to tweak the
"color.ui" config setting. Let's give both of these commands
the usual color command-line options.
This is a bit more obvious as a method for overriding the
config. And it also prepares us for the behavior of "always"
changing (so that we are still left with a way of forcing
color when our output goes to a non-terminal).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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To test the color output, we must convince "git branch" to
write colors to a non-terminal. We do that now by setting
the color config to "always". In preparation for the
behavior of "always" changing, let's switch to using the
"--color" command-line option, which is more direct.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In preparation for the behavior of "always" changing to
match "auto", we can simply drop this test. We already check
other forms (like "--color") independently.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We test the %C() format placeholders with a variety of
color-inducing options, including "--color" and
"-c color.ui=always". In preparation for the behavior of
"always" changing, we need to do something with those
"always" tests.
We can drop ones that expect "always" to turn on color even
to a file, as that will become a synonym for "auto", which
is already tested.
For the "--no-color" test, we need to make sure that color
would otherwise be shown. To do this, we can use
test_terminal, which enables colors in the default setup.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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To check that "status -v" respects diff config, we set
"color.diff" and look at the output of "status". We could
equally well use any diff config. Since color output depends
on a lot of other factors (like whether stdout is a tty, and
how we interpret "always"), let's use a more mundane option.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This script tests the output of status with various formats
when color is enabled. It uses the "always" setting so that
the output is valid even though we capture it in a file.
Using test_terminal gives us a more realistic environment,
and prepares us for the behavior of "always" changing.
Arguably we are testing less than before, since "auto" is
already the default, and we can no longer tell if the config
is actually doing anything.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When testing whether "add -p" can generate colors, we set
color.ui to "always". This isn't a very good test, as in the
real-world a user typically has "auto" coupled with stdout
going to a terminal (and it's plausible that this could mask
a real bug in add--interactive if we depend on plumbing's
isatty check).
Let's switch to test_terminal, which gives us a more
realistic environment. This also prepare us for future
changes to the "always" color option.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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t4015 contains many color-related tests which need to
override the "is stdout a tty" check. They do so by setting
the color.diff config, but we can accomplish the same with
the --color option. Besides being shorter to type, switching
will prepare us for upcoming changes to "always" when see it
in config.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The point of the test-terminal script is to simulate in the
test scripts an environment where output is going to a real
terminal.
But since test-lib.sh also sets TERM=dumb, the simulation
isn't very realistic. The color code will skip auto-coloring
for TERM=dumb, leading to us liberally sprinkling
test_terminal env TERM=vt100 git ...
through the test suite to convince the tests to actually
generate colors. Let's set TERM for programs run under
test_terminal, which is one less thing for test-writers to
remember.
In most cases the callers can be simplified, but note there
is one interesting case in t4202. It uses test_terminal to
check the auto-enabling of --decorate, but the expected
output _doesn't_ contain colors (because TERM=dumb
suppresses them). Using TERM=vt100 is closer to what the
real world looks like; adjust the expected output to match.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This test wants to confirm that "clean -i" shows color
output. Using test_terminal gives us a more realistic
environment than "color.ui=always", and prepares us for the
behavior of "always" changing in a future patch.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The tests for --color-moved write their output to a file,
but doing so suppresses color output under "auto". Right now
this is solved by running the whole script under
"color.diff=always". In preparation for the behavior of
"always" changing, let's explicitly enable color.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Many variables that points at a region of memory that will live
throughout the life of the program have been marked with UNLEAK
marker to help the leak checkers concentrate on real leaks..
* ma/builtin-unleak:
builtin/: add UNLEAKs
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Add some UNLEAKs where we are about to return from `cmd_*`. UNLEAK the
variables in the same order as we've declared them. While addressing
`msg` in builtin/tag.c, convert the existing `strbuf_release()` calls as
well.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Backports a moral equivalent of 2015 fix to the poll emulation from
the upstream gnulib to fix occasional breakages on HPE NonStop.
* rb/compat-poll-fix:
poll.c: always set revents, even if to zero
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Match what is done to pfd[i].revents when compute_revents() returns
0 to the upstream gnulib's commit d42461c3 ("poll: fixes for large
fds", 2015-02-20). The revents field is set to 0, without
incrementing the value rc to be returned from the function. The
original code left the field to whatever random value the field was
initialized to.
This fixes occasional hangs in git-upload-pack on HPE NonStop.
Signed-off-by: Randall S. Becker <randall.becker@nexbridge.ca>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fixes for a handful memory access issues identified by valgrind.
* tg/memfixes:
sub-process: use child_process.args instead of child_process.argv
http-push: fix construction of hex value from path
path.c: fix uninitialized memory access
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Currently the argv is only allocated on the stack, and then assigned to
process->argv. When the start_subprocess function goes out of scope,
the local argv variable is eliminated from the stack, but the pointer is
still kept around in process->argv.
Much later when we try to access the same process->argv in
finish_command, this leads us to access a memory location that no longer
contains what we want. As argv0 is only used for printing errors, this
is not easily noticed in normal git operations. However when running
t0021-conversion.sh through valgrind, valgrind rightfully complains:
==21024== Invalid read of size 8
==21024== at 0x2ACF64: finish_command (run-command.c:869)
==21024== by 0x2D6B18: subprocess_exit_handler (sub-process.c:72)
==21024== by 0x2AB41E: cleanup_children (run-command.c:45)
==21024== by 0x2AB526: cleanup_children_on_exit (run-command.c:81)
==21024== by 0x54AD487: __run_exit_handlers (in /usr/lib/libc-2.26.so)
==21024== by 0x54AD4D9: exit (in /usr/lib/libc-2.26.so)
==21024== by 0x11A9EF: handle_builtin (git.c:550)
==21024== by 0x11ABCC: run_argv (git.c:602)
==21024== by 0x11AD8E: cmd_main (git.c:679)
==21024== by 0x1BF125: main (common-main.c:43)
==21024== Address 0x1ffeffec00 is on thread 1's stack
==21024== 1504 bytes below stack pointer
==21024==
These days, the child_process structure has its own args array, and
the standard way to set up its argv[] is to use that one, instead of
assigning to process->argv to point at an array that is outside.
Use that facility automatically fixes this issue.
Reported-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The get_oid_hex_from_objpath takes care of creating a oid from a
pathname. It does this by memcpy'ing the first two bytes of the path to
the "hex" string, then skipping the '/', and then copying the rest of the
path to the "hex" string. Currently it fails to increase the pointer to
the hex string, so the second memcpy invocation just mashes over what
was copied in the first one, and leaves the last two bytes in the string
uninitialized.
This breaks valgrind in t5540, although the test passes without
valgrind:
==5490== Use of uninitialised value of size 8
==5490== at 0x13C6B5: hexval (cache.h:1238)
==5490== by 0x13C6DB: hex2chr (cache.h:1247)
==5490== by 0x13C734: get_sha1_hex (hex.c:42)
==5490== by 0x13C78E: get_oid_hex (hex.c:53)
==5490== by 0x118BDA: get_oid_hex_from_objpath (http-push.c:1023)
==5490== by 0x118C92: process_ls_object (http-push.c:1038)
==5490== by 0x118E5B: handle_remote_ls_ctx (http-push.c:1077)
==5490== by 0x118227: xml_end_tag (http-push.c:815)
==5490== by 0x50C1448: ??? (in /usr/lib/libexpat.so.1.6.6)
==5490== by 0x50C221B: ??? (in /usr/lib/libexpat.so.1.6.6)
==5490== by 0x50BFBF2: ??? (in /usr/lib/libexpat.so.1.6.6)
==5490== by 0x50C0B24: ??? (in /usr/lib/libexpat.so.1.6.6)
==5490== Uninitialised value was created by a stack allocation
==5490== at 0x118B63: get_oid_hex_from_objpath (http-push.c:1012)
==5490==
Fix this by correctly incrementing the pointer to the "hex" variable, so
the first two bytes are left untouched by the memcpy call, and the last
two bytes are correctly initialized.
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In cleanup_path we're passing in a char array, run a memcmp on it, and
run through it without ever checking if something is in the array in the
first place. This can lead us to access uninitialized memory, for
example in t5541-http-push-smart.sh test 7, when run under valgrind:
==4423== Conditional jump or move depends on uninitialised value(s)
==4423== at 0x242FA9: cleanup_path (path.c:35)
==4423== by 0x242FA9: mkpath (path.c:456)
==4423== by 0x256CC7: refname_match (refs.c:364)
==4423== by 0x26C181: count_refspec_match (remote.c:1015)
==4423== by 0x26C181: match_explicit_lhs (remote.c:1126)
==4423== by 0x26C181: check_push_refs (remote.c:1409)
==4423== by 0x2ABB4D: transport_push (transport.c:870)
==4423== by 0x186703: push_with_options (push.c:332)
==4423== by 0x18746D: do_push (push.c:409)
==4423== by 0x18746D: cmd_push (push.c:566)
==4423== by 0x1183E0: run_builtin (git.c:352)
==4423== by 0x11973E: handle_builtin (git.c:539)
==4423== by 0x11973E: run_argv (git.c:593)
==4423== by 0x11973E: main (git.c:698)
==4423== Uninitialised value was created by a heap allocation
==4423== at 0x4C2CD8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==4423== by 0x4C2F195: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==4423== by 0x2C196B: xrealloc (wrapper.c:137)
==4423== by 0x29A30B: strbuf_grow (strbuf.c:66)
==4423== by 0x29A30B: strbuf_vaddf (strbuf.c:277)
==4423== by 0x242F9F: mkpath (path.c:454)
==4423== by 0x256CC7: refname_match (refs.c:364)
==4423== by 0x26C181: count_refspec_match (remote.c:1015)
==4423== by 0x26C181: match_explicit_lhs (remote.c:1126)
==4423== by 0x26C181: check_push_refs (remote.c:1409)
==4423== by 0x2ABB4D: transport_push (transport.c:870)
==4423== by 0x186703: push_with_options (push.c:332)
==4423== by 0x18746D: do_push (push.c:409)
==4423== by 0x18746D: cmd_push (push.c:566)
==4423== by 0x1183E0: run_builtin (git.c:352)
==4423== by 0x11973E: handle_builtin (git.c:539)
==4423== by 0x11973E: run_argv (git.c:593)
==4423== by 0x11973E: main (git.c:698)
==4423==
Avoid this by using skip_prefix(), which knows not to go beyond the
end of the string.
Reported-by: Thomas Gummerer <t.gummerer@gmail.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>
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* sb/branch-avoid-repeated-strbuf-release:
branch: reset instead of release a strbuf
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Our documentation advises to not re-use a strbuf, after strbuf_release
has been called on it. Use the proper reset instead.
Currently 'strbuf_release' releases and re-initializes the strbuf, so it
is safe, but slow. 'strbuf_reset' only resets the internal length variable,
such that this could also be accounted for as a micro-optimization.
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* rs/qsort-s:
test-stringlist: avoid buffer underrun when sorting nothing
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Check if the strbuf containing data to sort is empty before attempting
to trim a trailing newline character.
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>
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* jn/strbuf-doc-re-reuse:
strbuf doc: reuse after strbuf_release is fine
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strbuf_release leaves the strbuf in a valid, initialized state, so
there is no need to call strbuf_init after it.
Moreover, this is not likely to change in the future: strbuf_release
leaving the strbuf in a valid state has been easy to maintain and has
been very helpful for Git's robustness and simplicity (e.g.,
preventing use-after-free vulnerabilities).
Document the semantics so the next generation of Git developers can
become familiar with them without reading the implementation. It is
still not advisable to call strbuf_release too often because it is
wasteful, so add a note pointing to strbuf_reset for that.
The same semantics apply to strbuf_detach. Add a similar note to its
docstring to make that clear.
Improved-by: Jeff King <peff@peff.net>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The feature that allows --pretty='%(trailers)' to take modifiers
like "fold" and "only" used to separate these modifiers with a
comma, i.e. "%(trailers:fold:only)", but we changed our mind and
use a comma, i.e. "%(trailers:fold,only)". Fast track this change
before this new feature becomes part of any official release.
* tb/delimit-pretty-trailers-args-with-comma:
pretty.c: delimit "%(trailers)" arguments with ","
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In preparation for adding consistent "%(trailers)" atom options to
`git-for-each-ref(1)`'s "--format" argument, change "%(trailers)" in
pretty.c to separate sub-arguments with a ",", instead of a ":".
Multiple sub-arguments are given either as "%(trailers:unfold,only)" or
"%(trailers:only,unfold)".
This change disambiguates between "top-level" arguments, and arguments
given to the trailers atom itself. It is consistent with the behavior of
"%(upstream)" and "%(push)" atoms.
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Spell the name of our system as "Git" in the output from
request-pull script.
* ar/request-pull-phrasofix:
request-pull: capitalise "Git" to make it a proper noun
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Of the many ways to spell the three-letter word, the variant "Git"
should be used when referring to a repository in a description; or, in
general, when it is used as a proper noun.
We thus change the pull-request template message so that it reads
"...in the Git repository at:"
Besides, this brings us in line with the documentation, see
Documentation/howto/using-signed-tag-in-pull-request.txt
Signed-off-by: Ann T Ropea <bedhanger@gmx.de>
Acked-by: Jonathan Nieder <jrnieder@gmail.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* rs/run-command-use-alloc-array:
run-command: use ALLOC_ARRAY
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Use the macro ALLOC_ARRAY to allocate an array. This is shorter and
easier, as it automatically infers the size of elements.
Patch generated with Coccinelle and contrib/coccinelle/array.cocci.
Signeg-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add comment to clarify that the style file is meant to be used with
clang-5 and the rules are still work in progress.
* sb/git-clang-format:
clang-format: add a comment about the meaning/status of the
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Having a .clang-format file in a project can be understood in a way that
code has to be in the style defined by the .clang-format file, i.e., you
just have to run clang-format over all code and you are set.
This unfortunately is not yet the case in the Git project, as the
format file is still work in progress. Explain it with a comment in
the beginning of the file.
Additionally, the working clang-format version is mentioned because the
config directives change from time to time (in a compatibility-breaking way).
Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* rs/use-free-and-null:
repository: use FREE_AND_NULL
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Use the macro FREE_AND_NULL to release allocated objects and clear their
pointers. This is shorter and documents the intent better by combining
the two related operations into one.
Patch generated with Coccinelle and contrib/coccinelle/free.cocci.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* rs/tag-null-pointer-arith-fix:
tag: avoid NULL pointer arithmetic
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lookup_blob() etc. can return NULL if the referenced object isn't of the
expected type. In theory it's wrong to reference the object member in
that case. In practice it's OK because it's located at offset 0 for all
types, so the pointer arithmetic (NULL + 0) is optimized out by the
compiler. The issue is reported by Clang's AddressSanitizer, though.
Avoid the ASan error by casting the results of the lookup functions to
struct object pointers. That works fine with NULL pointers as well. We
already rely on the object member being first in all object types in
other places in the code.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* rs/cocci-de-paren-call-params:
coccinelle: remove parentheses that become unnecessary
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Transformations that hide multiplications can end up with an pair of
parentheses that is no longer needed. E.g. with a rule like this:
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expression E;
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- E * 2
+ double(E)
... we might get a patch like this:
- x = (a + b) * 2;
+ x = double((a + b));
Add a pair of parentheses to the preimage side of such rules.
Coccinelle will generate patches that remove them if they are present,
and it will still match expressions that lack them.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* rs/cleanup-strbuf-users:
graph: use strbuf_addchars() to add spaces
use strbuf_addstr() for adding strings to strbufs
path: use strbuf_add_real_path()
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strbuf_addf() can be used to add a specific number of space characters
by using the format "%*s" with an empty string and specifying the
desired width. Use strbuf_addchars() instead as it's shorter, makes the
intent clearer and is a bit more efficient.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Use strbuf_addstr() instead of strbuf_addf() for adding strings. That's
simpler and makes the intent clearer.
Patch generated by Coccinelle and contrib/coccinelle/strbuf.cocci;
adjusted indentation in refs/packed-backend.c manually.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Avoid a string copy to a static buffer by using strbuf_add_real_path()
instead of combining strbuf_addstr() and real_path().
Patch generated by Coccinelle and contrib/coccinelle/strbuf.cocci.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* rs/resolve-ref-optional-result:
refs: pass NULL to resolve_refdup() if hash is not needed
refs: pass NULL to refs_resolve_refdup() if hash is not needed
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This allows us to get rid of several write-only variables.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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