Hi Jon, Thanks for the reply.
On Tue, 16 Dec 2025 13:11:15 +0000 Jon Turney wrote: > On 14/12/2025 07:39, Takashi Yano via Cygwin wrote: > > On Sun, 14 Dec 2025 16:26:37 +0900 > > Takashi Yano via Cygwin <[email protected]> wrote: > > > >> Recently, I have concerned that testsuite winsup.api/pthread/cancel2 fails > >> consistently. > >> > >> https://github.com/cygwin/cygwin/actions/runs/19926408142/job/57127200619 > > Thanks very much for looking into this! > > I have the vague idea that this problem started showing up (more?) when > the CI VM was upgraded from Windows Server 2022 to Windows Server 2025, > but I guess that's maybe just timings... IIRC, this did not happen when I uses Win10. Now, I'm using Win11. > >> I'm not sure why this happens, but it also falis in my local environment. > >> I looked into this issue a bit, and found that access violation happnes > >> in CloseHandle() in _cygtls::remove(). > >> > >> And I am also not sure why at all, cancel2 works if CloseHandle()'s are > >> replaced with NtClose() as follows. > > I think this is just the difference between the two calls: CloseHandle > generates an exception whereas NtClose returns an error code if the > handle is invalid. > > Doesn't really explain whats wrong with the handle, though. I checked the return code of NtClose() and found the it is STATUS_SUCCESS. If the handle is invalid, NtClose() returns error code, I think... -- Takashi Yano <[email protected]> -- 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
