Many tests need to store data in a file, and repeat the same pattern to
refer to that path:
"$TEST_DIRECTORY"/t5100/
Create a variable that contains this path, and use that instead.
While we're making this change, make sure the quotes are not just around
the variable, but around the entire string to not give the impression
we want shell splitting to affect the other variables.
Signed-off-by: Kevin Daudt <me@ikke.info>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Users often wonder if the oldest or the newest n commits are shown
by `log -n --reverse`. Clarify that --reverse kicks in only after
deciding which commits are to be shown to unconfuse them.
Reported-by: Ruediger Meier <sweet_f_a@gmx.de>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Call strbuf_add_unique_abbrev() to add abbreviated hashes to strbufs
instead of taking detours through find_unique_abbrev() and its static
buffer. This is shorter and a bit more efficient.
1eb47f167d already converted six cases,
this patch covers three more.
A semantic patch for Coccinelle is included for easier checking for
new cases that might be introduced in the future.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Replace uses of strbuf_addf() for adding strings with more lightweight
strbuf_addstr() calls. This is shorter and makes the intent clearer.
bc57b9c0cc already converted three cases,
this patch covers two more.
A semantic patch for Coccinelle is included for easier checking for
new cases that might be introduced in the future.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The command accesses default_abbrev (defined in environment.c and is
updated via core.abbrev configuration), but never makes any call to
git_config(). The output from "worktree list" ignores the abbrev
setting for this reason.
Make a call to git_config() to read the default set of configuration
variables at the beginning of the command.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When opening a loose object file, we often do this sequence:
- prepare a short buffer for the object header (on stack)
- call unpack_sha1_header() and have early part of the object data
inflated, enough to fill the buffer
- parse that data in the short buffer, assuming that the first part
of the object is <typename> SP <length> NUL
Because the parsing function parse_sha1_header_extended() is not
given the number of bytes inflated into the header buffer, it you
craft a file whose early part inflates a garbage sequence without SP
or NUL, and replace a loose object with it, it will end up reading
past the end of the inflated data.
To correct this, do the following four things:
- rename unpack_sha1_header() to unpack_sha1_short_header() and
have unpack_sha1_header_to_strbuf() keep calling that as its
helper function. This will detect and report zlib errors, but is
not aware of the format of a loose object (as before).
- introduce unpack_sha1_header() that calls the same helper
function, and when zlib reports it inflated OK into the buffer,
check if the inflated data has NUL. This would ensure that
parsing function will terminate within the buffer that holds the
inflated header.
- update unpack_sha1_header_to_strbuf() to check if the resulting
buffer has NUL for the same effect.
- update parse_sha1_header_extended() to make sure that its loop to
find the SP that terminates the <typename> stops at NUL.
Essentially, this makes unpack_*() functions that are asked to
unpack a loose object header to be a bit more strict and detect an
input that cannot possibly be a valid object header, even before the
parsing function kicks in.
Reported-by: Gustavo Grieco <gustavo.grieco@imag.fr>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The streaming read interface from a loose object called
parse_sha1_header() but discarded its return value, without noticing
a potential error.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Starting with v2.5.0 git merge can handle FETCH_HEAD internally and
warns when it's called like 'git merge <message> HEAD <commit>' because
that syntax is deprecated. Use this feature in git-gui and get rid of
that warning.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Tested-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a semantic patch for converting certain calls of memcpy(3) to
COPY_ARRAY() and apply that transformation to the code base. The result
is
shorter and safer code. For now only consider calls where source and
destination have the same type, or in other words: easy cases.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add COPY_ARRAY, a safe and convenient helper for copying arrays,
complementing ALLOC_ARRAY and REALLOC_ARRAY. Users just specify source,
destination and the number of elements; the size of an element is
inferred automatically.
It checks if the multiplication of size and element count overflows.
The inferred size is passed first to st_mult, which allows the division
there to be done at compilation time.
As a basic type safety check it makes sure the sizes of source and
destination elements are the same. That's evaluated at compilation time
as well.
COPY_ARRAY is safe to use with NULL as source pointer iff 0 elements are
to be copied. That convention is used in some cases for initializing
arrays. Raw memcpy(3) does not support it -- compilers are allowed to
assume that only valid pointers are passed to it and can optimize away
NULL checks after such a call.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The MAX_IN_VAIN mechanism was introduced in commit f061e5f ("fetch-pack:
give up after getting too many "ack continue"", 2006-05-24) to stop ref
negotiation if a number of consecutive "have"s have been sent with no
corresponding new acks. This is to stop the client from digging too deep
in an irrelevant side branch in vain without ever finding a common
ancestor. A use case (as described in that commit) is the scenario in
which the local repository has more roots than the remote repository.
However, during a negotiation in which stateless RPCs are used,
MAX_IN_VAIN will (almost) never trigger (in the more-roots scenario
above and others) because in each new request, the client has to inform
the server of objects it already has and knows the server has (to remind
the server of the state), which the server then acks.
Make fetch-pack only consider, as new acks for the purpose of
MAX_IN_VAIN, acks for objects for which the client has never received an
ack before in this session.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We call getaddrinfo() to try to convert a short hostname
into a fully-qualified one (to use it as an email domain).
If there isn't a canonical name, getaddrinfo() will
generally return either a NULL addrinfo list, or one in
which ai->ai_canonname is a copy of the original name.
However, if the result of gethostname() looks like an IP
address, then getaddrinfo() behaves differently on some
systems. On OS X, it will return a "struct addrinfo" with a
NULL ai_canonname, and we segfault feeding it to strchr().
This is hard to test reliably because it involves not only a
system where we we have to fallback to gethostname() to come
up with an ident, but also where the hostname is a number
with no dots. But I was able to replicate the bug by faking
a hostname, like:
diff --git a/ident.c b/ident.c
index e20a772..b790d28 100644
--- a/ident.c
+++ b/ident.c
@@ -128,6 +128,7 @@ static void add_domainname(struct strbuf *out, int *is_bogus)
*is_bogus = 1;
return;
}
+ xsnprintf(buf, sizeof(buf), "1");
if (strchr(buf, '.'))
strbuf_addstr(out, buf);
else if (canonical_name(buf, out) < 0) {
and running "git var GIT_AUTHOR_IDENT" on an OS X system.
Before this patch it segfaults, and after we correctly
complain of the bogus "user@1.(none)" address (though this
bogus address would be suitable for non-object uses like
writing reflogs).
Reported-by: Jonas Thiel <jonas.lierschied@gmx.de>
Diagnosed-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Back when this guide was written, cvsimport was the only
game in town. These days it is probably not the best option.
Rather than go into details, let's point people to the note
at the top of cvsimport which gives other options.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The old page gives a 404 now. Searching for "cvsps" via
Google returns a GitHub project page as the top hit.
Reported-by: Dan Pritts
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
parsecvs maintenance was taken over by ESR, and the name
changed to cvs-fast-export as it learned to support that
output format. Let's point to cvs-fast-export, as it should
have additional bug-fixes and be more convenient to use.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The verify_packfile() does not explicitly open the packfile;
instead, it starts with a sha1 checksum over the whole pack,
and relies on use_pack() to open the packfile as a side
effect.
If the pack cannot be opened for whatever reason (either
because its header information is corrupted, or perhaps
because a simultaneous repack deleted it), then use_pack()
will die(), as it has no way to return an error. This is not
ideal, as verify_packfile() otherwise tries to gently return
an error (this lets programs like git-fsck go on to check
other packs).
Instead, let's check is_pack_valid() up front, and return an
error if it fails. This will open the pack as a side effect,
and then use_pack() will later rely on our cached
descriptor, and avoid calling die().
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The TravisCI macOS build is broken because homebrew (a macOS dependency
manager) changed its internal directory structure [1]. This is a problem
because we modify the Perforce dependencies in the homebrew repository
before installing them.
Fix it by asking homebrew for its path instead of hardcoding it.
[1] 0a09ae30f8
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A recently introduced test checks the result of 'git status' after
setting the executable bit on a file. This check does not yield the
expected result when the filesystem does not support the executable
bit.
What we care about is that a file added with "--chmod=+x" has
executable bit in the index and that "--chmod=+x" (or any other
options for that matter) does not muck with working tree files.
The former is tested by other existing tests, so let's check the
latter more explicitly and only under POSIXPERM prerequisite.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The new regexec_buf() function operates on buffers with an explicitly
specified length, rather than NUL-terminated strings.
We need to use this function whenever the buffer we want to pass to
regexec(3) may have been mmap(2)ed (and is hence not NUL-terminated).
Note: the original motivation for this patch was to fix a bug where
`git diff -G <regex>` would crash. This patch converts more callers,
though, some of which allocated to construct NUL-terminated strings,
or worse, modified buffers to temporarily insert NULs while calling
regexec(3). By converting them to use regexec_buf(), the code has
become much cleaner.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We just introduced a test that demonstrates that our sloppy use of
regexec() on a mmap()ed area can result in incorrect results or even
hard crashes.
So what we need to fix this is a function that calls regexec() on a
length-delimited, rather than a NUL-terminated, string.
Happily, there is an extension to regexec() introduced by the NetBSD
project and present in all major regex implementation including
Linux', MacOSX' and the one Git includes in compat/regex/: by using
the (non-POSIX) REG_STARTEND flag, it is possible to tell the
regexec() function that it should only look at the offsets between
pmatch[0].rm_so and pmatch[0].rm_eo.
That is exactly what we need.
Since support for REG_STARTEND is so widespread by now, let's just
introduce a helper function that always uses it, and tell people
on a platform whose regex library does not support it to use the
one from our compat/regex/ directory.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When our pickaxe code feeds file contents to regexec(), it implicitly
assumes that the file contents are read into implicitly NUL-terminated
buffers (i.e. that we overallocate by 1, appending a single '\0').
This is not so.
In particular when the file contents are simply mmap()ed, we can be
virtually certain that the buffer is preceding uninitialized bytes, or
invalid pages.
Note that the test we add here is known to be flakey: we simply cannot
know whether the byte following the mmap()ed ones is a NUL or not.
Typically, on Linux the test passes. On Windows, it fails virtually
every time due to an access violation (that's a segmentation fault for
you Unix-y people out there). And Windows would be correct: the
regexec() call wants to operate on a regular, NUL-terminated string,
there is no NUL in the mmap()ed memory range, and it is undefined
whether the next byte is even legal to access.
When run with --valgrind it demonstrates quite clearly the breakage, of
course.
Being marked with `test_expect_failure`, this test will sometimes be
declare "TODO fixed", even if it only passes by mistake.
This test case represents a Minimal, Complete and Verifiable Example of
a breakage reported by Chris Sidi.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
die is not a standard shell function. Use
a different shell code for the example.
Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The subdirectory 'sub' is created early in the test file. Later, a test
case removes it during its clean-up actions. However, this test case is
protected by POSIXPERM. Consequently, 'sub' remains when the POSIXPERM
prerequisite is not satisfied. Later, a recently introduced test case
creates 'sub' again. Use -p with mkdir so that it does not fail if 'sub'
already exists.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The two functions in parse_branchname_arg(), verify_non_filename and
check_filename, need correct prefix in order to reconstruct the paths
and check for their existence. With NULL prefix, they just check paths
at top dir instead.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Normally we err on the safe side: if something can be seen as both an
SHA1 and a pathspec, we stop and scream. In checkout, there is one
exception added in 859fdab (git-checkout: improve error messages, detect
ambiguities. - 2008-07-23), to allow the common case "git checkout
branch". Let's document this exception.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Message cleanup.
* ah/misc-message-fixes:
unpack-trees: do not capitalize "working"
git-merge-octopus: do not capitalize "octopus"
git-rebase--interactive: fix English grammar
cat-file: put spaces around pipes in usage string
am: put spaces around pipe in usage string
Update a few tests that used to use GIT_CURL_VERBOSE to use the
newer GIT_TRACE_CURL.
* ep/use-git-trace-curl-in-tests:
t5551-http-fetch-smart.sh: use the GIT_TRACE_CURL environment var
t5550-http-fetch-dumb.sh: use the GIT_TRACE_CURL environment var
test-lib.sh: preserve GIT_TRACE_CURL from the environment
t5541-http-push-smart.sh: use the GIT_TRACE_CURL environment var
A test spawned a short-lived background process, which sometimes
prevented the test directory from getting removed at the end of the
script on some platforms.
* js/t6026-clean-up:
t6026-merge-attr: clean up background process at end of test case
"git symbolic-ref -d HEAD" happily removes the symbolic ref, but
the resulting repository becomes an invalid one. Teach the command
to forbid removal of HEAD.
* jc/forbid-symbolic-ref-d-HEAD:
symbolic-ref -d: do not allow removal of HEAD
Having a submodule whose ".git" repository is somehow corrupt
caused a few commands that recurse into submodules loop forever.
* jc/submodule-anchor-git-dir:
submodule: avoid auto-discovery in prepare_submodule_repo_env()
The test framework left the number of tests and success/failure
count in the t/test-results directory, keyed by the name of the
test script plus the process ID. The latter however turned out not
to serve any useful purpose. The process ID part of the filename
has been removed.
* jk/test-lib-drop-pid-from-results:
test-lib: drop PID from test-results/*.count
"diff-highlight" script (in contrib/) learned to work better with
"git log -p --graph" output.
* bh/diff-highlight-graph:
diff-highlight: avoid highlighting combined diffs
diff-highlight: add multi-byte tests
diff-highlight: ignore test cruft
diff-highlight: add support for --graph output
diff-highlight: add failing test for handling --graph output
diff-highlight: add some tests
Clarify various ways to specify the "revision ranges" in the
documentation.
* po/range-doc:
doc: revisions: sort examples and fix alignment of the unchanged
doc: revisions: show revision expansion in examples
doc: revisions - clarify reachability examples
doc: revisions - define `reachable`
doc: gitrevisions - clarify 'latter case' is revision walk
doc: gitrevisions - use 'reachable' in page description
doc: revisions: single vs multi-parent notation comparison
doc: revisions: extra clarification of <rev>^! notation effects
doc: revisions: give headings for the two and three dot notations
doc: show the actual left, right, and boundary marks
doc: revisions - name the left and right sides
doc: use 'symmetric difference' consistently
Reset colors and attributes upon %C(auto) to enable full automatic
control over them; otherwise attributes like bold or reverse could
still be in effect from previous %C placeholders.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since 4c7f181 (make color.ui default to 'auto', 2013-06-10), the
default for color.* when nothing is set is 'auto' and we still claimed
that the default was 'false'. Be more precise by saying explicitly
that the default is to follow color.ui, and recall that the default is
'auto' to avoid one indirection for the reader.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Otherwise for people who use autotools-based configure in main worktree,
the performance testing results will be inconsistent as work and build
trees could be using e.g. different optimization levels.
See e.g.
http://public-inbox.org/git/20160818175222.bmm3ivjheokf2qzl@sigill.intra.peff.net/
for example.
NOTE config.status has to be copied because otherwise without it the build
would want to run reconfigure this way loosing just copied config.mak.autogen.
Signed-off-by: Kirill Smelkov <kirr@nexedi.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Replace uses of strbuf_addf() for adding strings with more lightweight
strbuf_addstr() calls. This makes the intent clearer and avoids
potential issues with printf format specifiers.
02962d3684 already converted six cases,
this patch covers eleven more.
A semantic patch for Coccinelle is included for easier checking for
new cases that might be introduced in the future.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Provide a simple way to run Coccinelle against all source files, in the
form of a Makefile target. Running "make coccicheck" applies each
.cocci file in contrib/coccinelle/ on all source files. It generates
a .patch file for each .cocci file, containing the actual changes for
effecting the transformations described by the semantic patches.
Non-empty .patch files are reported. They can be applied to the work
tree using "patch -p0", but should be checked to e.g. make sure they
don't screw up formatting or create circular references.
Coccinelle's diagnostic output (stderr) is piped into .log files.
Linux has a much more elaborate make target of the same name; let's
start nice and easy.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Both sha1_to_hex_r() and oid_to_hex_r() take two parameters, so use two
expressions in the semantic patch for transforming calls of the former
to the latter one.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
