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Date: Thu, 3 Dec 2015 23:52:21 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: fork issue when lauching cygwin64 process from 32bit native app on Windows 10 TH2
Message-ID: <20151203225221.GR18447@calimero.vinschen.de>
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References: <565D762E DOT 4090109 AT gmail DOT com>
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On Dec  1 19:27, nu774 wrote:
> After upgrading to Windows 10 TH2 (ver 1511, build 10586), any attempt
> to launch a cygwin64 process from 32bit native app (for example,
> C:\windows\syswow64\cmd.exe) *always* results in a fork error.
>=20
> To be precise, I can execute 64bit bash.exe from 32bit cmd.exe.
> However, this bash process never succeeds in forking a child (ls or
> something).
> Also, I cannot launch 64bit mintty.exe from 32bit cmd.exe. It always
> fails in a error dialog saying that:
>=20
> mintty: could not detach from caller
> Try '--help' for more information.
>=20
> When launching from 64bit app, this issue doesn't happen.

I created a workaround for this issue and uploaded new developer
snapshots to https://cygwin.com/snapshots, as well as a new Cygwin
test release 2.4.0-0.7 with this change
(https://cygwin.com/ml/cygwin-announce/2015-12/msg00001.html)

Please give any of them a try.


Thanks,
Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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