git/compat, branch gitk-resize-error

getcwd(mingw): handle the case when there is no cwd

2022-01-19T19:27:31Z

A recent upstream topic introduced checks for certain Git commands that prevent them from deleting the current working directory, introducing also a regression test that ensures that commands such as `git version` _can_ run without a current working directory. While technically not possible on Windows via the regular Win32 API, we do run the regression tests in an MSYS2 Bash which uses a POSIX emulation layer (the MSYS2/Cygwin runtime) where a really evil hack _does_ allow to delete a directory even if it is the current working directory. Therefore, Git needs to be prepared for a missing working directory, even on Windows. This issue was not noticed in upstream Git because there was no caller that tried to discover a Git directory with a deleted current working directory in the test suite. But in the microsoft/git fork, we do want to run `pre-command`/`post-command` hooks for every command, even for `git version`, which means that we make precisely such a call. The bug is not in that `pre-command`/`post-command` feature, though, but in `mingw_getcwd()` and needs to be addressed there. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano

Merge branch 'ma/windows-dynload-fix'

2022-01-12T23:11:41Z

Fix calling dynamically loaded functions on Windows. * ma/windows-dynload-fix: lazyload: use correct calling conventions

lazyload: use correct calling conventions

2022-01-09T18:34:53Z

Christoph Reiter reported on the Git for Windows issue tracker[1], that mingw_strftime() imports strftime() from ucrtbase.dll with the wrong calling convention. It should be __cdecl instead of WINAPI, which we always use in DECLARE_PROC_ADDR(). The MSYS2 project encountered cmake sefaults on x86 Windows caused by the same issue in the cmake source. [2] There are no known git crashes that where caused by this, yet, but we should try to prevent them. We import two other non-WINAPI functions via DECLARE_PROC_ADDR(), too. * NtSetSystemInformation() (NTAPI) * GetUserNameExW() (SEC_ENTRY) NTAPI, SEC_ENTRY and WINAPI are all ususally defined as __stdcall, but there are circumstances where they're defined differently. Teach DECLARE_PROC_ADDR() about calling conventions and be explicit about when we want to use which calling convention. Import winnt.h for the definition of NTAPI and sspi.h for SEC_ENTRY near their respective only users. [1] https://github.com/git-for-windows/git/issues/3560 [2] https://github.com/msys2/MINGW-packages/issues/10152 Reported-By: Christoph Reiter Signed-off-by: Matthias Aßhauer Signed-off-by: Junio C Hamano

Merge branch 'hn/reftable'

2021-12-15T17:39:45Z

The "reftable" backend for the refs API, without integrating into the refs subsystem, has been added. * hn/reftable: Add "test-tool dump-reftable" command. reftable: add dump utility reftable: implement stack, a mutable database of reftable files. reftable: implement refname validation reftable: add merged table view reftable: add a heap-based priority queue for reftable records reftable: reftable file level tests reftable: read reftable files reftable: generic interface to tables reftable: write reftable files reftable: a generic binary tree implementation reftable: reading/writing blocks Provide zlib's uncompress2 from compat/zlib-compat.c reftable: (de)serialization for the polymorphic record type. reftable: add blocksource, an abstraction for random access reads reftable: utility functions reftable: add error related functionality reftable: add LICENSE hash.h: provide constants for the hash IDs

Merge branch 'cb/mingw-gmtime-r'

2021-12-10T22:35:15Z

Build fix on Windows. * cb/mingw-gmtime-r: mingw: avoid fallback for {local,gm}time_r()

Merge branch 'jc/unsetenv-returns-an-int'

2021-11-29T23:41:48Z

The compatibility implementation for unsetenv(3) were written to mimic ancient, non-POSIX, variant seen in an old glibc; it has been changed to return an integer to match the more modern era. * jc/unsetenv-returns-an-int: unsetenv(3) returns int, not void

mingw: avoid fallback for {local,gm}time_r()

2021-11-28T07:49:20Z

mingw-w64's pthread_unistd.h had a bug that mistakenly (because there is no support for the *lockfile() functions required[1]) defined _POSIX_THREAD_SAFE_FUNCTIONS and that was being worked around since 3ecd153a3b (compat/mingw: support MSys2-based MinGW build, 2016-01-14). The bug was fixed in winphtreads, but as a side effect, leaves the reentrant functions from time.h no longer visible and therefore breaks the build. Since the intention all along was to avoid using the fallback functions, formalize the use of POSIX by setting the corresponding feature flag and compile out the implementation for the fallback functions. [1] https://unix.org/whitepapers/reentrant.html Signed-off-by: Carlo Marcelo Arenas Belón Acked-by: Johannes Schindelin Signed-off-by: Junio C Hamano

simple-ipc: work around issues with Cygwin's Unix socket emulation

2021-11-10T17:12:19Z

Cygwin emulates Unix sockets by writing files with custom contents and then marking them as system files. The tricky problem is that while the file is written and its `system` bit is set, it is still identified as a file. This caused test failures when Git is too fast looking for the Unix sockets and then complains that there is a plain file in the way. Let's work around this by adding a delayed retry loop, specifically for Cygwin. Signed-off-by: Johannes Schindelin Tested-by: Ramsay Jones Signed-off-by: Junio C Hamano

unsetenv(3) returns int, not void

2021-10-29T22:00:58Z

This compatilibity implementation has been returning a wrong type, ever since 731043fd (Add compat/unsetenv.c ., 2006-01-25) added to the system, yet nobody noticed it in the past 16 years, presumably because no code checks failures in their unsetenv() calls. Sigh. For now, make it always succeed. Signed-off-by: Junio C Hamano

Merge branch 'cm/save-restore-terminal'

2021-10-18T22:47:57Z

An editor session launched during a Git operation (e.g. during 'git commit') can leave the terminal in a funny state. The code path has updated to save the terminal state before, and restore it after, it spawns an editor. * cm/save-restore-terminal: editor: save and reset terminal after calling EDITOR terminal: teach git how to save/restore its terminal settings