Pipes bug when spawning non-cygwin processes

Edward Lam triplequadsupport@gmail.com
Tue Feb 18 19:24:00 GMT 2020

Hi Folks,

I'm noticing a different problem with pipes that isn't fixed even in the
latest 2020-02-12 cygwin1.dll snapshot. When a native graphical Windows
process is launched (in the foreground without & in the command line) from
mintty/bash, the STARTUPINFO structure for the child Windows process
correctly has the STARTF_USESTDHANDLES bit set into info.dwFlags BUT both
info.hStdInput and info.hStdOutput handles are 0, only info.hStdError is
assigned to a handle. So in the older cygwin versions, this application's
printf() calls go out to the shell as desired but not anymore.

Any ideas?


On Fri, Jan 31, 2020 at 1:25 AM Edward Lam <triplequadsupport@gmail.com>

> On Thu, Jan 30, 2020 at 5:25 PM Takashi Yano <takashi.yano@nifty.ne.jp>
> wrote:
>> Probably, this is the same issue as
>> https://www.cygwin.com/ml/cygwin/2020-01/msg00093.html.
>> Please try latest cygwin snapshot.
>> https://cygwin.com/snapshots/
> Indeed, this works again after  20202401 snapshot!
> Thanks,
> -Edward

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