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2014-04-03Merge branch 'rr/doc-merge-strategies' into maintLibravatar Junio C Hamano1-2/+2
* rr/doc-merge-strategies: Documentation/merge-strategies: avoid hyphenated commands
2014-04-03Merge branch 'jk/shallow-update-fix' into maintLibravatar Junio C Hamano5-56/+49
* jk/shallow-update-fix: shallow: verify shallow file after taking lock shallow: automatically clean up shallow tempfiles shallow: use stat_validity to check for up-to-date file
2014-04-03Merge branch 'jc/stash-pop-not-popped' into maintLibravatar Junio C Hamano1-2/+8
* jc/stash-pop-not-popped: stash pop: mention we did not drop the stash upon failing to apply
2014-04-03Merge branch 'jn/wt-status' into maintLibravatar Junio C Hamano3-55/+88
* jn/wt-status: wt-status: lift the artificual "at least 20 columns" floor wt-status: i18n of section labels wt-status: extract the code to compute width for labels wt-status: make full label string to be subject to l10n
2014-03-18Git 1.9.1Libravatar Junio C Hamano4-3/+63
The version numbering scheme has changed since Git 1.9 and we dropped the third dewey-decimal from the traditional numbering (e.g. both 1.8.4 and 1.8.5 were major feature releases). This release 1.9.1 is the first maintenance relase for Git 1.9. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-18Merge branch 'jk/clean-d-pathspec' into maintLibravatar Junio C Hamano2-11/+25
"git clean -d pathspec" did not use the given pathspec correctly and ended up cleaning too much. * jk/clean-d-pathspec: clean: simplify dir/not-dir logic clean: respect pathspecs with "-d"
2014-03-18Merge branch 'da/difftool-git-files' into maintLibravatar Junio C Hamano2-16/+16
"git difftool" misbehaved when the repository is bound to the working tree with the ".git file" mechanism, where a textual file ".git" tells us where it is. * da/difftool-git-files: t7800: add a difftool test for .git-files difftool: support repositories with .git-files
2014-03-18Merge branch 'jk/remote-pushremote-config-reading' into maintLibravatar Junio C Hamano2-1/+19
"git push" did not pay attention to branch.*.pushremote if it is defined earlier than remote.pushdefault; the order of these two variables in the configuration file should not matter, but it did by mistake. * jk/remote-pushremote-config-reading: remote: handle pushremote config in any order
2014-03-18Merge branch 'jk/commit-dates-parsing-fix' into maintLibravatar Junio C Hamano6-11/+96
Codepaths that parse timestamps in commit objects have been tightened. * jk/commit-dates-parsing-fix: show_ident_date: fix tz range check log: do not segfault on gmtime errors log: handle integer overflow in timestamps date: check date overflow against time_t fsck: report integer overflow in author timestamps t4212: test bogus timestamps with git-log
2014-03-18Merge branch 'tr/diff-submodule-no-reuse-worktree' into maintLibravatar Junio C Hamano2-3/+32
"git diff --external-diff" incorrectly fed the submodule directory in the working tree to the external diff driver when it knew it is the same as one of the versions being compared. * tr/diff-submodule-no-reuse-worktree: diff: do not reuse_worktree_file for submodules
2014-03-18Merge branch 'nd/reset-setup-worktree' into maintLibravatar Junio C Hamano2-3/+15
"git reset" needs to refresh the index when working in a working tree (it can also be used to match the index to the HEAD in an otherwise bare repository), but it failed to set up the working tree properly, causing GIT_WORK_TREE to be ignored. * nd/reset-setup-worktree: reset: optionally setup worktree and refresh index on --mixed
2014-03-18Merge branch 'jc/check-attr-honor-working-tree' into maintLibravatar Junio C Hamano2-22/+43
"git check-attr" when working on a repository with a working tree did not work well when the working tree was specified via the --work-tree (and obviously with --git-dir) option. * jc/check-attr-honor-working-tree: check-attr: move to the top of working tree when in non-bare repository t0003: do not chdir the whole test process
2014-03-18Merge branch 'bk/refresh-missing-ok-in-merge-recursive' into maintLibravatar Junio C Hamano4-14/+70
"merge-recursive" was broken in 1.7.7 era and stopped working in an empty (temporary) working tree, when there are renames involved. This has been corrected. * bk/refresh-missing-ok-in-merge-recursive: merge-recursive.c: tolerate missing files while refreshing index read-cache.c: extend make_cache_entry refresh flag with options read-cache.c: refactor --ignore-missing implementation t3030-merge-recursive: test known breakage with empty work tree
2014-03-18Merge branch 'ds/rev-parse-required-args' into maintLibravatar Junio C Hamano1-6/+11
"git rev-parse" was loose in rejecting command line arguments that do not make sense, e.g. "--default" without the required value for that option. * ds/rev-parse-required-args: rev-parse: check i before using argv[i] against argc
2014-03-18Merge branch 'jk/config-path-include-fix' into maintLibravatar Junio C Hamano2-2/+6
include.path variable (or any variable that expects a path that can use ~username expansion) in the configuration file is not a boolean, but the code failed to check it. * jk/config-path-include-fix: handle_path_include: don't look at NULL value expand_user_path: do not look at NULL path
2014-03-18Merge branch 'nd/diff-quiet-stat-dirty' into maintLibravatar Junio C Hamano3-24/+51
"git diff --quiet -- pathspec1 pathspec2" sometimes did not return correct status value. * nd/diff-quiet-stat-dirty: diff: do not quit early on stat-dirty files diff.c: move diffcore_skip_stat_unmatch core logic out for reuse later
2014-03-18Merge branch 'nd/http-fetch-shallow-fix' into maintLibravatar Junio C Hamano12-37/+105
Attempting to deepen a shallow repository by fetching over smart HTTP transport failed in the protocol exchange, when no-done extension was used. The fetching side waited for the list of shallow boundary commits after the sending end stopped talking to it. * nd/http-fetch-shallow-fix: t5537: move http tests out to t5539 fetch-pack: fix deepen shallow over smart http with no-done cap protocol-capabilities.txt: document no-done protocol-capabilities.txt: refer multi_ack_detailed back to pack-protocol.txt pack-protocol.txt: clarify 'obj-id' in the last ACK after 'done' test: rename http fetch and push test files tests: auto-set LIB_HTTPD_PORT from test name
2014-03-18Merge branch 'nd/submodule-pathspec-ending-with-slash' into maintLibravatar Junio C Hamano22-76/+89
Allow "git cmd path/", when the 'path' is where a submodule is bound to the top-level working tree, to match 'path', despite the extra and unnecessary trailing slash (such a slash is often given by command line completion). * nd/submodule-pathspec-ending-with-slash: clean: use cache_name_is_other() clean: replace match_pathspec() with dir_path_match() pathspec: pass directory indicator to match_pathspec_item() match_pathspec: match pathspec "foo/" against directory "foo" dir.c: prepare match_pathspec_item for taking more flags pathspec: rename match_pathspec_depth() to match_pathspec() pathspec: convert some match_pathspec_depth() to dir_path_match() pathspec: convert some match_pathspec_depth() to ce_path_match()
2014-03-17Documentation/merge-strategies: avoid hyphenated commandsLibravatar Ramkumar Ramachandra1-2/+2
Replace git-pull and git-merge with the corresponding un-hyphenated versions. While at it, use ` to mark it up instead of '. Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-17shallow: verify shallow file after taking lockLibravatar Jeff King1-2/+2
Before writing the shallow file, we stat() the existing file to make sure it has not been updated since our operation began. However, we do not do so under a lock, so there is a possible race: 1. Process A takes the lock. 2. Process B calls check_shallow_file_for_update and finds no update. 3. Process A commits the lockfile. 4. Process B takes the lock, then overwrite's process A's changes. We can fix this by doing our check while we hold the lock. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-12wt-status: lift the artificual "at least 20 columns" floorLibravatar Junio C Hamano3-15/+13
When we show unmerged paths, we had an artificial 20 columns floor for the width of labels (e.g. "both deleted:") shown next to the pathnames. Depending on the locale, this may result in a label that is too wide when all the label strings are way shorter than 20 columns, or no-op when a label string is longer than 20 columns. Just drop the artificial floor. The screen real estate is better utilized this way when all the strings are shorter. Adjust the tests to this change. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-12wt-status: i18n of section labelsLibravatar Jonathan Nieder1-19/+47
The original code assumes that: (1) the number of bytes written is the width of a string, so they can line up; (2) the "how" string is always <= 19 bytes. Neither of which we should assume. Using the same approach as the earlier 3651e45c (wt-status: take the alignment burden off translators, 2013-11-05), compute the necessary column width to hold the longest label and use that for alignment. cf. http://bugs.debian.org/725777 Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Helped-by: Sandy Carter Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-12wt-status: extract the code to compute width for labelsLibravatar Jonathan Nieder1-7/+15
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-12wt-status: make full label string to be subject to l10nLibravatar Junio C Hamano1-18/+17
Earlier in 3651e45c (wt-status: take the alignment burden off translators, 2013-11-05), we assumed that it is OK to make the string before the colon in a label string we give as the section header of various kinds of changes (e.g. "new file:") translatable. This assumption apparently does not hold for some languages, e.g. ones that want to have spaces around the colon. Also introduce a static label_width to avoid having to run strlen(padding) over and over. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-11clean: simplify dir/not-dir logicLibravatar Jeff King1-9/+6
When we get a list of paths from read_directory, we further prune it to create the final list of items to remove. The code paths for directories and non-directories repeat the same "add to list" code. This patch restructures the code so that we don't repeat ourselves. Also, by following a "if (condition) continue" pattern like the pathspec check above, it makes it more obvious that the conditional is about excluding directories under certain circumstances. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-11clean: respect pathspecs with "-d"Libravatar Jeff King2-2/+19
git-clean uses read_directory to fill in a `struct dir` with potential hits. However, read_directory does not actually check against our pathspec. It uses a simplified version that may turn up false positives. As a result, we need to check that any hits match our pathspec. We do so reliably for non-directories. For directories, if "-d" is not given we check that the pathspec matched exactly (i.e., we are even stricter, and require an explicit "git clean foo" to clean "foo/"). But if "-d" is given, rather than relaxing the exact match to allow a recursive match, we do not check the pathspec at all. This regression was introduced in 113f10f (Make git-clean a builtin, 2007-11-11). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-07show_ident_date: fix tz range checkLibravatar Jeff King1-2/+2
Commit 1dca155fe3fa (log: handle integer overflow in timestamps, 2014-02-24) tried to catch integer overflow coming from strtol() on the timezone field by comparing against LONG_MIN/LONG_MAX. However, the intermediate "tz" variable is an "int", which means it can never be LONG_MAX on LP64 systems; we would truncate the output from strtol before the comparison. Clang's -Wtautological-constant-out-of-range-compare notices this and rightly complains. Let's instead store the result of strtol in a long, and then compare it against INT_MIN/INT_MAX. This will catch overflow from strtol, and also overflow when we pass the result as an int to show_date. Reported-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-05t7800: add a difftool test for .git-filesLibravatar Junio C Hamano1-0/+14
Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-05i18n: proposed command missing leading dashLibravatar Sandy Carter1-2/+2
Add missing leading dash to proposed commands in french output when using the command: git branch --set-upstream remotename/branchname and when upstream is gone Signed-off-by: Sandy Carter <sandy.carter@savoirfairelinux.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-27shallow: automatically clean up shallow tempfilesLibravatar Jeff King5-37/+40
We sometimes write tempfiles of the form "shallow_XXXXXX" during fetch/push operations with shallow repositories. Under normal circumstances, we clean up the result when we are done. However, we do no take steps to clean up after ourselves when we exit due to die() or signal death. This patch teaches the tempfile creation code to register handlers to clean up after ourselves. To handle this, we change the ownership semantics of the filename returned by setup_temporary_shallow. It now keeps a copy of the filename itself, and returns only a const pointer to it. We can also do away with explicit tempfile removal in the callers. They all exit not long after finishing with the file, so they can rely on the auto-cleanup, simplifying the code. Note that we keep things simple and maintain only a single filename to be cleaned. This is sufficient for the current caller, but we future-proof it with a die("BUG"). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-27shallow: use stat_validity to check for up-to-date fileLibravatar Jeff King1-17/+7
When we are about to write the shallow file, we check that it has not changed since we last read it. Instead of hand-rolling this, we can use stat_validity. This is built around the index stat-check, so it is more robust than just checking the mtime, as we do now (it uses the same check as we do for index files). The new code also handles the case of a shallow file appearing unexpectedly. With the current code, two simultaneous processes making us shallow (e.g., two "git fetch --depth=1" running at the same time in a non-shallow repository) can race to overwrite each other. As a bonus, we also remove a race in determining the stat information of what we read (we stat and then open, leaving a race window; instead we should open and then fstat the descriptor). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-26stash pop: mention we did not drop the stash upon failing to applyLibravatar Junio C Hamano1-2/+8
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24diff: do not quit early on stat-dirty filesLibravatar Nguyễn Thái Ngọc Duy3-5/+25
When QUICK is set (i.e. with --quiet) we try to do as little work as possible, stopping after seeing the first change. stat-dirty is considered a "change" but it may turn out not, if no actual content is changed. The actual content test is performed too late in the process and the shortcut may be taken prematurely, leading to incorrect return code. Assume we do "git diff --quiet". If we have a stat-dirty file "a" and a really dirty file "b". We break the loop in run_diff_files() and stop after "a" because we have got a "change". Later in diffcore_skip_stat_unmatch() we find out "a" is actually not changed. But there's nothing else in the diff queue, we incorrectly declare "no change", ignoring the fact that "b" is changed. This also happens to "git diff --quiet HEAD" when it hits diff_can_quit_early() in oneway_diff(). This patch does the content test earlier in order to keep going if "a" is unchanged. The test result is cached so that when diffcore_skip_stat_unmatch() is done in the end, we spend no cycles on re-testing "a". Reported-by: IWAMOTO Toshihiro <iwamoto@valinux.co.jp> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24diff.c: move diffcore_skip_stat_unmatch core logic out for reuse laterLibravatar Nguyễn Thái Ngọc Duy1-21/+28
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24clean: use cache_name_is_other()Libravatar Nguyễn Thái Ngọc Duy1-19/+2
cmd_clean() has the exact same code of index_name_is_other(). Reduce code duplication. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24clean: replace match_pathspec() with dir_path_match()Libravatar Nguyễn Thái Ngọc Duy1-2/+1
This instance was left out when many match_pathspec() call sites that take input from dir_entry were converted to dir_path_match() because it passed a path with the trailing slash stripped out to match_pathspec() while the others did not. Stripping for all call sites back then would be a regression because match_pathspec() did not know how to match pathspec foo/ against _directory_ foo (the stripped version of path "foo/"). match_pathspec() knows how to do it now. And dir_path_match() strips the trailing slash also. Use the new function, because the stripping code is removed in the next patch. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24pathspec: pass directory indicator to match_pathspec_item()Libravatar Nguyễn Thái Ngọc Duy6-9/+20
This patch activates the DO_MATCH_DIRECTORY code in m_p_i(), which makes "git diff HEAD submodule/" and "git diff HEAD submodule" produce the same output. Previously only the version without trailing slash returns the difference (if any). That's the effect of new ce_path_match(). dir_path_match() is not executed by the new tests. And it should not introduce regressions. Previously if path "dir/" is passed in with pathspec "dir/", they obviously match. With new dir_path_match(), the path becomes _directory_ "dir" vs pathspec "dir/", which is not executed by the old code path in m_p_i(). The new code path is executed and produces the same result. The other case is pathspec "dir" and path "dir/" is now turned to "dir" (with DO_MATCH_DIRECTORY). Still the same result before or after the patch. So why change? Because of the next patch about clean.c. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24match_pathspec: match pathspec "foo/" against directory "foo"Libravatar Nguyễn Thái Ngọc Duy1-1/+6
Currently we do support matching pathspec "foo/" against directory "foo". That is because match_pathspec() has no way to tell "foo" is a directory and matching "foo/" against _file_ "foo" is wrong. The callers can now tell match_pathspec if "foo" is a directory, we could make an exception for this case. Code is not executed though because no callers pass the flag yet. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24dir.c: prepare match_pathspec_item for taking more flagsLibravatar Nguyễn Thái Ngọc Duy1-6/+13
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24pathspec: rename match_pathspec_depth() to match_pathspec()Libravatar Nguyễn Thái Ngọc Duy7-25/+27
A long time ago, for some reason I was not happy with match_pathspec(). I created a better version, match_pathspec_depth() that was suppose to replace match_pathspec() eventually. match_pathspec() has finally been gone since 6 months ago. Use the shorter name for match_pathspec_depth(). Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24pathspec: convert some match_pathspec_depth() to dir_path_match()Libravatar Nguyễn Thái Ngọc Duy5-8/+12
This helps reduce the number of match_pathspec_depth() call sites and show how m_p_d() is used. And it usage is: - match against an index entry (ce_path_match or match_pathspec_depth in ls-files) - match against a dir_entry from read_directory (dir_path_match and match_pathspec_depth in clean.c, which will be converted later) - resolve-undo (rerere.c and ls-files.c) Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24pathspec: convert some match_pathspec_depth() to ce_path_match()Libravatar Nguyễn Thái Ngọc Duy14-22/+24
This helps reduce the number of match_pathspec_depth() call sites and show how match_pathspec_depth() is used. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24merge-recursive.c: tolerate missing files while refreshing indexLibravatar Brad King2-2/+3
Teach add_cacheinfo to tell make_cache_entry to skip refreshing stat information when a file is missing from the work tree. We do not want the index to be stat-dirty after the merge but also do not want to fail when a file happens to be missing. This fixes the 'merge-recursive w/ empty work tree - ours has rename' case in t3030-merge-recursive. Suggested-by: Elijah Newren <newren@gmail.com> Signed-off-by: Brad King <brad.king@kitware.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24read-cache.c: extend make_cache_entry refresh flag with optionsLibravatar Brad King3-12/+16
Convert the make_cache_entry boolean 'refresh' argument to a more general 'refresh_options' argument. Pass the value through to the underlying refresh_cache_ent call. Add option CE_MATCH_REFRESH to enable stat refresh. Update call sites to use the new signature. Signed-off-by: Brad King <brad.king@kitware.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24read-cache.c: refactor --ignore-missing implementationLibravatar Brad King2-3/+7
Move lstat ENOENT handling from refresh_index to refresh_cache_ent and activate it with a new CE_MATCH_IGNORE_MISSING option. This will allow other call paths into refresh_cache_ent to use the feature. Signed-off-by: Brad King <brad.king@kitware.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24t3030-merge-recursive: test known breakage with empty work treeLibravatar Brad King1-0/+47
Sometimes when working with a large repository it can be useful to try out a merge and only check out conflicting files to disk (for example as a speed optimization on a server). Until v1.7.7-rc1~28^2~20 (merge-recursive: When we detect we can skip an update, actually skip it, 2011-08-11), it was possible to do so with the following idiom: # Prepare a temporary index and empty work tree. GIT_INDEX_FILE="$PWD/tmp-$$-index" && export GIT_INDEX_FILE && GIT_WORK_TREE="$PWD/tmp-$$-work" && export GIT_WORK_TREE && mkdir "$GIT_WORK_TREE" && # Convince the index that our side is on disk. git read-tree -i -m $ours && git update-index --ignore-missing --refresh && # Merge their side into our side. bases=$(git merge-base --all $ours $theirs) && git merge-recursive $bases -- $ours $theirs && tree=$(git write-tree) Nowadays, that still works and the exit status is the same, but merge-recursive produces a diagnostic if "our" side renamed a file: error: addinfo_cache failed for path 'dst' Add a test to document this regression. Signed-off-by: Brad King <brad.king@kitware.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24remote: handle pushremote config in any orderLibravatar Jeff King2-1/+19
The remote we push can be defined either by remote.pushdefault or by branch.*.pushremote for the current branch. The order in which they appear in the config file should not matter to precedence (which should be to prefer the branch-specific config). The current code parses the config linearly and uses a single string to store both values, overwriting any previous value. Thus, config like: [branch "master"] pushremote = foo [remote] pushdefault = bar erroneously ends up pushing to "bar" from the master branch. We can fix this by storing both values and resolving the correct value after all config is read. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24log: do not segfault on gmtime errorsLibravatar Jeff King2-2/+12
Many code paths assume that show_date and show_ident_date cannot return NULL. For the most part, we handle missing or corrupt timestamps by showing the epoch time t=0. However, we might still return NULL if gmtime rejects the time_t we feed it, resulting in a segfault. Let's catch this case and just format t=0. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24log: handle integer overflow in timestampsLibravatar Jeff King2-2/+24
If an ident line has a ridiculous date value like (2^64)+1, we currently just pass ULONG_MAX along to the date code, which can produce nonsensical dates. On systems with a signed long time_t (e.g., 64-bit glibc systems), this actually doesn't end up too bad. The ULONG_MAX is converted to -1, we apply the timezone field to that, and the result ends up somewhere between Dec 31, 1969 and Jan 1, 1970. However, there is still a few good reasons to detect the overflow explicitly: 1. On systems where "unsigned long" is smaller than time_t, we get a nonsensical date in the future. 2. Even where it would produce "Dec 31, 1969", it's easier to recognize "midnight Jan 1" as a consistent sentinel value for "we could not parse this". 3. Values which do not overflow strtoul but do overflow a signed time_t produce nonsensical values in the past. For example, on a 64-bit system with a signed long time_t, a timestamp of 18446744073000000000 produces a date in 1947. We also recognize overflow in the timezone field, which could produce nonsensical results. In this case we show the parsed date, but in UTC. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-02-24date: check date overflow against time_tLibravatar Jeff King3-1/+19
When we check whether a timestamp has overflowed, we check only against ULONG_MAX, meaning that strtoul has overflowed. However, we also feed these timestamps to system functions like gmtime, which expect a time_t. On many systems, time_t is actually smaller than "unsigned long" (e.g., because it is signed), and we would overflow when using these functions. We don't know the actual size or signedness of time_t, but we can easily check for truncation with a simple assignment. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>