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1.3.2, 1.1.8: Pipelines losing data? (Windows 2000)
- To: <cygwin at cygwin dot com>
- Subject: 1.3.2, 1.1.8: Pipelines losing data? (Windows 2000)
- From: russell christian sears <sears at cis dot ohio-state dot edu>
- Date: Mon, 2 Jul 2001 09:21:22 -0400 (EDT)
I have found a problem using less and grep to search a file. The file is
available at: http://www.cis.ohio-state.edu/~sears/file.txt (It is over 1
megabyte, so I did not include it in this message.)
I am using bash, and a complete, current installation of cygwin.
When I run the command `less file.txt | grep cygwin` it sometimes fails to
find a match in the file, even though the file does contain the string.
It seems to be sporadic, but I have been able to reproduce the problem on
three machines, each of which ran at about 700mhz. Other commands that
seem to work as expected follow:
less file.txt | cat | grep cygwin
cat file.txt | grep cygwin
grep cygwin file.txt
If you have difficulty reproducing the bug, try running the command
multiple times (eg: by repeating <up-arrow>, <enter> rapidly). Some
installations will only rarely have a problem, others will rarely yield
the correct result. On systems that usually produce the correct result,
re-running the command rapidly seems to increase the likelihood of the
problem
ocurring.
Also, the string "cygwin" always appears at the end of a line in the file,
which may be related to this bug.
I have tried both version 1.1.8 and the current cygwin distribution.
(1.3.2) Both seem to suffer from this problem.
As a control, I've checked this against a Linux system, and the bug did
not exist there.
Below, the mount mode is listed as textmode. The bug exists under binmode
as well.
Here is the output of cygcheck -s -v -r > cygcheck.out:
Cygnus Win95/NT Configuration Diagnostics
Current System Time: Thu Jun 28 15:48:34 2001
WinNT Ver 5.0 build 2195
Path: /usr/local/bin
/usr/bin
/bin
/cygdrive/c/Perl/bin/
/cygdrive/c/WINNT/system32
/cygdrive/c/WINNT
/cygdrive/c/WINNT/System32/Wbem
SysDir: C:\WINNT\System32
WinDir: C:\WINNT
PWD = `/home/Administrator'
USER = `Administrator'
MAKE_MODE = `unix'
HOME = `/home/Administrator'
NUMBER_OF_PROCESSORS = `1'
PROMPT = `$P$G'
LOGONSERVER = `\\SERVER-2'
OS2LIBPATH = `C:\WINNT\system32\os2\dll;'
COMSPEC = `C:\WINNT\system32\cmd.exe'
!C: = `C:\cygwin\bin'
SYSTEMDRIVE = `C:'
HOSTNAME = `RSEARS'
PROCESSOR_REVISION = `0803'
PATHEXT = `.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH'
COMPUTERNAME = `RSEARS'
WINDIR = `C:\WINNT'
USERPROFILE = `C:\Documents and Settings\rsears'
PS1 = `\[\033]0;\w\007
\033[32m\]\u@\h \[\033[33m\w\033[0m\]
$ '
HOMESHARE = `\\file1\users\rsears'
PROGRAMFILES = `C:\Program Files'
USERDNSDOMAIN = `colmol.com'
MACHTYPE = `i686-pc-cygwin'
PROCESSOR_IDENTIFIER = `x86 Family 6 Model 8 Stepping 3, GenuineIntel'
OS = `Windows_NT'
OLDPWD = `/usr/bin'
PROCESSOR_ARCHITECTURE = `x86'
TEMP = `/cygdrive/c/DOCUME~1/rsears/LOCALS~1/Temp'
PROCESSOR_LEVEL = `6'
SYSTEMROOT = `C:\WINNT'
HOMEDRIVE = `M:'
ALLUSERSPROFILE = `C:\Documents and Settings\All Users'
SHLVL = `1'
APPDATA = `C:\Documents and Settings\rsears\Application Data'
COMMONPROGRAMFILES = `C:\Program Files\Common Files'
HOMEPATH = `\'
USERDOMAIN = `CMS'
USERNAME = `rsears'
SHELL = `/bin/bash'
HOSTTYPE = `i686'
OSTYPE = `cygwin'
TERM = `cygwin'
_ = `/usr/bin/cygcheck'
TZ = `EST5EDT4,M4.1.0/2,M10.5.0/2'
HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
(default) = `/cygdrive'
cygdrive flags = 0x00000020
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\S
tart Menu\Programs\Cygnus Solutions
(default) = (unsupported type)
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/
(default) = `C:\cygwin'
flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
(default) = `C:/cygwin/bin'
flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
(default) = `C:/cygwin/lib'
flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options
a: fd N/A N/A
c: hd NTFS 28615Mb 19% CP CS UN PA FC
d: cd N/A N/A
m: net NTFS 131798Mb 26% CP CS UN PA FC Data Disk
C:\cygwin\bin /usr/bin system textmode
C:\cygwin\lib /usr/lib system textmode
C:\cygwin / system textmode
c: /cygdrive/c user textmode,noumount
m: /cygdrive/m user textmode,noumount
Found: C:\cygwin\bin\bash.exe
Found: C:\cygwin\bin\cat.exe
Found: C:\cygwin\bin\cpp.exe
Found: C:\cygwin\bin\find.exe
Found: C:\cygwin\bin\gcc.exe
Found: C:\cygwin\bin\gdb.exe
Found: C:\cygwin\bin\ld.exe
Found: C:\cygwin\bin\ls.exe
Found: C:\cygwin\bin\make.exe
Found: C:\cygwin\bin\sh.exe
56k 2000/12/03 C:\cygwin\bin\cygbz21.0.dll - os=4.0 img=1.0 sys=4.0
"cygbz21.0.dll" v0.0 ts=2000/11/20 18:53
45k 2001/04/25 C:\cygwin\bin\cygform5.dll - os=4.0 img=1.0 sys=4.0
"cygform5.dll" v0.0 ts=2001/4/25 1:28
18k 2000/10/23 C:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm.dll" v0.0 ts=2000/10/22 22:26
17k 2001/01/07 C:\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0
"cyghistory4.dll" v0.0 ts=2001/1/6 23:34
14k 2000/10/23 C:\cygwin\bin\cygintl.dll - os=4.0 img=1.0 sys=4.0
"cygintl.dll" v0.0 ts=2000/10/23 15:02
81k 2000/12/05 C:\cygwin\bin\cygitcl30.dll - os=4.0 img=1.0 sys=4.0
"cygitcl30.dll" v0.0 ts=2000/11/25 20:43
35k 2000/12/05 C:\cygwin\bin\cygitk30.dll - os=4.0 img=1.0 sys=4.0
"cygitk30.dll" v0.0 ts=2000/11/25 20:43
45k 2000/10/22 C:\cygwin\bin\cygjbig1.dll - os=4.0 img=1.0 sys=4.0
"cygjbig1.dll" v0.0 ts=2000/10/22 19:06
119k 2001/06/06 C:\cygwin\bin\cygjpeg6b.dll - os=4.0 img=1.0 sys=4.0
"cygjpeg6b.dll" v0.0 ts=2001/6/6 0:27
26k 2001/04/25 C:\cygwin\bin\cygmenu5.dll - os=4.0 img=1.0 sys=4.0
"cygmenu5.dll" v0.0 ts=2001/4/25 1:27
156k 2001/04/25 C:\cygwin\bin\cygncurses++5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++5.dll" v0.0 ts=2001/4/25 1:29
226k 2001/04/25 C:\cygwin\bin\cygncurses5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses5.dll" v0.0 ts=2001/4/25 1:17
15k 2001/04/25 C:\cygwin\bin\cygpanel5.dll - os=4.0 img=1.0 sys=4.0
"cygpanel5.dll" v0.0 ts=2001/4/25 1:27
163k 2001/05/06 C:\cygwin\bin\cygpng2.dll - os=4.0 img=1.0 sys=4.0
"cygpng2.dll" v0.0 ts=2001/5/6 0:05
108k 2001/01/07 C:\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0
"cygreadline4.dll" v0.0 ts=2001/1/6 23:34
390k 2000/12/05 C:\cygwin\bin\cygtcl80.dll - os=4.0 img=1.0 sys=4.0
"cygtcl80.dll" v0.0 ts=2000/11/25 20:39
5k 2000/12/05 C:\cygwin\bin\cygtclpip80.dll - os=4.0 img=1.0 sys=4.0
10k 2000/12/05 C:\cygwin\bin\cygtclreg80.dll - os=4.0 img=1.0 sys=4.0
"cygtclreg80.dll" v0.0 ts=2000/11/25 20:39
245k 2001/06/12 C:\cygwin\bin\cygtiff3.dll - os=4.0 img=1.0 sys=4.0
"cygtiff3.dll" v0.0 ts=2001/6/12 13:25
623k 2000/12/05 C:\cygwin\bin\cygtk80.dll - os=4.0 img=1.0 sys=4.0
"cygtk80.dll" v0.0 ts=2000/11/25 20:43
41k 2001/05/28 C:\cygwin\bin\cygXpm-noX4.dll - os=4.0 img=1.0 sys=4.0
"cygXpm-noX4.dll" v0.0 ts=2001/5/28 13:57
49k 2001/02/03 C:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
"cygz.dll" v0.0 ts=2001/2/3 15:35
678k 2001/05/21 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2001/5/20 23:28
Cygwin DLL version info:
dll major: 1003
dll minor: 2
dll epoch: 19
dll bad signal mask: 19005
dll old termios: 5
dll malloc env: 28
api major: 0
api minor: 39
shared data: 3
dll identifier: cygwin1
mount registry: 2
cygnus registry name: Cygnus Solutions
cygwin registry name: Cygwin
program options name: Program Options
cygwin mount registry name: mounts v2
cygdrive flags: cygdrive flags
cygdrive prefix: cygdrive prefix
cygdrive default prefix:
build date: Sun May 20 23:28:17 EDT 2001
shared id: cygwin1S3
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