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To: cygwin AT cygwin DOT com
From: nu774 <honeycomb77 AT gmail DOT com>
Subject: fork issue when lauching cygwin64 process from 32bit native app on Windows 10 TH2
Message-ID: <565D762E.4090109@gmail.com>
Date: Tue, 1 Dec 2015 19:27:58 +0900
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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.

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:

mintty: could not detach from caller
Try '--help' for more information.

When launching from 64bit app, this issue doesn't happen.

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