getcwd(mingw): handle the case when there is no current working directory #1120
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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 <johannes.schindelin@gmx.de>
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/submit |
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Submitted as pull.1120.git.1642618562012.gitgitgadget@gmail.com To fetch this version into To fetch this version to local tag |
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On the Git mailing list, Junio C Hamano wrote (reply to this): |
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This patch series was integrated into seen via git@e2724c1. |
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This patch series was integrated into next via git@fed79ae. |
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This patch series was integrated into master via git@e2724c1. |
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Closed via e2724c1. |
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Applied directly to |
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On the Git mailing list, Johannes Schindelin wrote (reply to this): |
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The bug fixed by this topic was noticed due to test failures while rebasing Microsoft's fork of Git onto v2.35.0-rc1. It may not be desirable to take it into Git v2.35.0 this late in the -rc phase, even though I do plan on integrating it into Git for Windows v2.35.0.