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To: Dan Shelton , cygwin@cygwin.com References: Content-Language: en-GB Cc: cygwin@cygwin.com In-Reply-To: X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.30 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Jon Turney via Cygwin Reply-To: Jon Turney Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: cygwin-bounces~archive-cygwin=delorie.com@cygwin.com Sender: "Cygwin" On 31/01/2026 18:42, Dan Shelton via Cygwin wrote: > Hello, on Cygwin 3.6.6-1.x86_64 on CYGWIN_NT-10.0-19045/Win10 I get > these errors from git fsck when working on a clean clone of the > gcc.git repro: > > git fsck > error: refs/tags/.cyg000000000559e25517156b51cf219f51/libgcj-2.95.1: > badRefName: invalid refname format > error: refs/tags/.cyg000000000559e25517156b51cf219f51/libgcj-2.95.0: > badRefName: invalid refname format > error: refs/tags/.cyg000000000559e25817156b51cf219f51/libf2c-0.5.22: > badRefName: invalid refname format > error: refs/tags/.cyg000000000559e25817156b51cf219f51/libf2c-0.5.21: > badRefName: invalid refname format > > git fsck then exits with error code 8, breaking our scripts. > > Is this a Cygwin bug or feature running wild? Yes. These .cygXXX files are made by the cygwin DLL (I think it's something like a hardlink to the running executable so we can fork even if it's deleted, but I might well be misremembering the details) and are supposed to get automatically removed. Obviously, 'git fsck' objects to their presence, but it is safe to remove them. -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple