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jmelas opened this issue Mar 1, 2025 · 5 comments · Fixed by git-for-windows/msys2-runtime#86
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cygwin warning about FAST_CWD #5447

jmelas opened this issue Mar 1, 2025 · 5 comments · Fixed by git-for-windows/msys2-runtime#86
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v2.49.0

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@jmelas
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jmelas commented Mar 1, 2025 •
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On latest Windows Canary build 10.0.27802.1000
git producess warnings via cygwin:

Cygwin WARNING:
Couldn't compute FAST_CWD pointer. This typically occurs if you're using
an older Cygwin version on a newer Windows. Please update to the latest
available Cygwin version from https://cygwin.com/. If the problem persists,
please see https://cygwin.com/problems.html

seems related to this:
msys2/msys2-runtime#154
@jmelas jmelas changed the title cygwin cygwin warning about FAST_CWD Mar 1, 2025
@dscho
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dscho commented Mar 1, 2025

Hey @jmelas thank you for reporting this! Could you please download the install artifact from this workflow run, extract its usr\bin\msys-2.0.dll and (temporarily) replace that file in your existing Git for Windows installation, then try again? As you can see from the age of that build, I have been asking people for two weeks to test whether this fixes the problem they encounter.

@jmelas
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jmelas commented Mar 1, 2025

Hi Johannes! Thank you for your response! I confirm this works fine now! Thank you so much!

@dscho dscho mentioned this issue Mar 1, 2025
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@dscho dscho added this to the Next release milestone Mar 1, 2025
@dscho
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dscho commented Mar 1, 2025 •
edited by gitforwindowshelper bot
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/add relnote bug On a recent Insider Windows version, users experienced the message: "Cygwin WARNING: Couldn't compute FAST_CWD pointer", which has been fixed.

The workflow run was started

github-actions bot pushed a commit to git-for-windows/build-extra that referenced this issue Mar 1, 2025
Add a release note (bug)
5afa258 
On a recent Insider Windows version, [users experienced the message:
"Cygwin WARNING: Couldn't compute FAST_CWD
pointer"](git-for-windows/git#5447), which has
been fixed.

Signed-off-by: gitforwindowshelper[bot] <gitforwindowshelper-bot@users.noreply.github.com>
@davidldennison
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Can confirm that updating to 2.49-rc1 has fixed the issue on Windows Canary build 27802.rs_prerelease.250222-1646

Was driving my crazy because I was sure I hadn't touched Cygwin in months. haha Thanks for releasing such a quick fix!

@dscho
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dscho commented Mar 6, 2025

@davidldennison thank you for testing!

@dscho dscho mentioned this issue Mar 11, 2025
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@rimrul rimrul mentioned this issue Mar 14, 2025
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Cygwin: Adjust CWD magic to accommodate for the latest Windows previews dscho/msys2-runtime
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@dscho @jmelas @davidldennison