On 29/04/2021 01:39, Takashi Yano wrote:
On Wed, 28 Apr 2021 22:17:44 +0200
M2 via Cygwin <cygwin@cygwin.com> wrote:
On 28/04/2021 16:36, Takashi Yano wrote:
On Wed, 28 Apr 2021 15:38:13 +0200
M2 via Cygwin <cygwin@cygwin.com> wrote:
Hi,
I found a possible regression issue between cygwin 3.1.7-1 and 3.2.0-1.
The issue happens with "short" output in multiple piping, such as the following
example:
dir | grep c | sed "s/^/foo/" | sed "s/oo/OO/"
(the case I run is different, but the bug is exposed by something silly/simple
as this)
In 3.1.7, all is fine and you get what you expect.
In 3.2.0, 3 out of 4 executions hang: the last command on the pipeline (i.e. `sed
"s/oo/OO/"`)
hangs forever, while all preceding commands (i.e. both `grep c` and `sed
"s/^/foo/"`) terminate correctly.
Attached, cygcheck outputs for both 3.1.7 and 3.2.0
I cannot reproduce your problem.
In 64 bit cygwin:
...
In 32 bit cygwin:
...
Some clarification: I run a mixed configuration with Cygwin commands
mostly ran in CMD.EXE shell.
In my installation it seems that output from a WINDOWS console program
causes trouble when piped to a CYGWIN process.
Close repetition such as loops tend to cause the bug.
...
I got it. Could you please try the latest cygwin snapshot?
https://cygwin.com/snapshots/
Thanks.
Good news! Seems to work again/fixed in snapshot
https://cygwin.com/snapshots/x86_64/cygwin1-20210426.dll.xz
3533k 2021/04/30 c:\cygwin\bin\cygwin1.dll
Cygwin DLL version info:
DLL version: 3.2.1
DLL epoch: 19
DLL old termios: 5
DLL malloc env: 28
Cygwin conv: 181
API major: 0
API minor: 340
Shared data: 5
DLL identifier: cygwin1
Mount registry: 3
Cygwin registry name: Cygwin
Installations name: Installations
Cygdrive default prefix:
Build date:
Snapshot date: 20210426-14:41:00
Shared id: cygwin1S5
Thanks!
Mauro
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