"Couldn't compute FAST_CWD pointer"
Sam Adams
samad@microsoft.com
Fri Jun 16 19:07:13 GMT 2023
I started seeing this error with more recent builds of Windows, so I went to the Cygwin site and ran the latest installer to get the most recent binaries. I've had to do this periodically in the past 15 years, and fresh binaries have resolved my issues in the past. This time, the error persisted. A quick search seems to point to different versions of GCC used to compile Cygwin might have compatibility issues with different versions of Windows. I'd like to help get this resolved if I can.
Thanks,
Sam
Error:
g:\os2\src\onecore\base\devices\association>ls
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
Mbs SourcesCop_nonfatal.err buildchk.metadata buildfre.exec.json client samples
So, I have a recent build of Windows. It seems like this issue popped up like a week or two ago, so it probably started 5-10 build numbers ago.
0:000> vertarget
Windows 10 Version 25888 MP (28 procs) Free x64
Product: WinNt, suite: SingleUserTS
Edition build lab: 25888.1000.amd64fre.rs_dplat.230614-1400
Build layer: DesktopEditions -> 25888.1000.amd64fre.rs_dplat.230614-1400
Build layer: OnecoreUAP -> 25888.1000.amd64fre.rs_dplat.230614-1400
Build layer: ShellCommon -> 25888.1000.amd64fre.rs_dplat.230614-1400
Build layer: OSClient -> 25888.1000.amd64fre.rs_dplat.230614-1400
Debug session time: Fri Jun 16 12:02:33.676 2023 (UTC - 7:00)
System Uptime: 0 days 8:43:16.926
Process Uptime: 0 days 0:13:15.247
Kernel time: 0 days 0:00:00.015
User time: 0 days 0:00:00.000
This is after I got the most recent version of Cygwin from the installer, it looks like version 3.4.6 built on Feb 14 2023.
0:000> lmDvmcygwin1
Browse full module list
start end module name
00007ff9`03810000 00007ff9`03b12000 cygwin1 (deferred)
Image path: g:\bin\cygwin1.dll
Image name: cygwin1.dll
Browse all global symbols functions data
Timestamp: Tue Feb 14 05:25:13 2023 (63EB8BB9)
CheckSum: 002D984A
ImageSize: 00302000
File version: 3003.3.0.0
Product version: 3003.3.0.0
File flags: 0 (Mask 3F)
File OS: 4 Unknown Win32
File type: 2.0 Dll
File date: 00000000.00000000
Translations: 0409.04b0
Information from resource tables:
CompanyName: Red Hat
ProductName: Cygwin
InternalName: cygwin1.dll
OriginalFilename: cygwin1.dll
ProductVersion: 3.4.6
FileVersion: 3.4.6
FileDescription: Cygwin POSIX Emulation DLL
LegalCopyright: Copyright (c) Cygwin Authors 1996-2023
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