[ANNOUNCEMENT] Updated: Cygwin 1.7.31-1

[ANNOUNCEMENT] Updated: Cygwin 1.7.31-1

[Corinna Vinschen]

[Now with correct subject, sorry]


Hi Cygwin friends and users,


I just released Cygwin 1.7.31-1.  This is mostely a bugfix release.

Please note that the new passwd/group handling still isn't in this
version of Cygwin.  The changes are still work in progress.


What changed:
-------------

- Improve performance of send(2), sendto(2), sendmsg(2) when using small
  input buffers.
  Addresses: https://cygwin.com/ml/cygwin/2014-07/msg00069.html

- The default pthread_mutex type is now PTHREAD_MUTEX_NORMAL, rather than
  PTHREAD_MUTEX_ERRORCHECK, just as on Linux.

- Align pthread_attr stack functions more closely to Linux.

- Mark pthread_attr_getstackaddr and pthread_attr_setstackaddr as deprecated,
  as on Linux.


Bug Fixes
---------

- Fix various assorted bugs (potential buffer overruns, resource leaks, you
  name it) caught by Coverity.

- Fix return value of getgrouplist if the number of groups is bigger than the
  application-provided buffer can hold.
  See https://cygwin.com/ml/cygwin/2014-05/msg00469.html

- Fix a spurious error condition in calls to getaddrinfo on x86_64.
  Addresses: https://cygwin.com/ml/cygwin/2014-06/msg00350.html

- Workaround a problem following native NTFS symlinks.  This patch has been
  not applied to 1.7.30, accidentally.
  Addresses: https://cygwin.com/ml/cygwin/2014-04/msg00384.html

- Fix an off-by-one bug in res_querydomain.
  Addresses: https://cygwin.com/ml/cygwin/2014-07/msg00052.html

- Don't catch STATUS_STACK_OVERFLOW preliminary on 64 bit.
  Fixes: https://cygwin.com/ml/cygwin/2014-07/msg00046.html

- Make sure that signals are properly delivered when sending lots of signals
  in succession.
  Fixes: https://cygwin.com/ml/cygwin/2014-07/threads.html#00149


To install 32-bit Cygwin use http://cygwin.com/setup-x86.exe
To install 64 bit Cygwin use http://cygwin.com/setup-x86_64.exe

The 64 bit Cygwin distribution doesn't yet come with as many packages
as the 32 bit version, but more packages will be available over time.

If you're already running a 32 bit version of Cygwin on 64 bit Windows
machines, you can continue to do so.  If you're planning a new install
of Cygwin on a 64 bit Windows machine, consider to use the new 64 bit
Cygwin version, unless you need certain packages not yet available in
the 64 bit release.


Have fun,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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Re: [ANNOUNCEMENT] Updated: Cygwin 1.7.31-1

[D. Boland]

Hi Corinna,

Corinna Vinschen wrote:
> 
> [Now with correct subject, sorry]
> 
> Hi Cygwin friends and users,
> 
> I just released Cygwin 1.7.31-1.  This is mostely a bugfix release.
> 

$ uname -a
CYGWIN_NT-5.1 dimension 1.7.31s(0.272/5/3) 20140716 11:15:29 i686 Cygwin

With the snapshot in place, the ftp client hangs indefinitely after entering the
password. Switching back to my old Cygwin DLL, it works again.

Greetings,
Daniel


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Re: [ANNOUNCEMENT] Updated: Cygwin 1.7.31-1

[Warren Young]

On 7/21/2014 06:19, D. Boland wrote:
>
> With the snapshot in place, the ftp client hangs indefinitely after entering the
> password. Switching back to my old Cygwin DLL, it works again.

Which FTP client is that?  The ftp.exe that comes with Windows, the 
ftp.exe from Cygwin's inetutils (?) package, or some other FTP client?

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Re: [ANNOUNCEMENT] Updated: Cygwin 1.7.31-1

[D. Boland]

Hi Warren,

Warren Young wrote:
> 
> On 7/21/2014 06:19, D. Boland wrote:
> >
> > With the snapshot in place, the ftp client hangs indefinitely after entering the
> > password. Switching back to my old Cygwin DLL, it works again.
> 
> Which FTP client is that?  The ftp.exe that comes with Windows, the
> ftp.exe from Cygwin's inetutils (?) package, or some other FTP client?

I used the ftp program from the inetutils package. 

D.


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Re: [ANNOUNCEMENT] Updated: Cygwin 1.7.31-1

[Matt D.]

Cannot replicate on Windows XP SP3 with latest Cygwin DLL by launching 
Cygwin's ftp from Windows command prompt or from a bash prompt. 
Everything connects fine.


Matt D.

On 7/21/2014 10:52 AM, D. Boland wrote:
> Hi Warren,
>
> Warren Young wrote:
>>
>> On 7/21/2014 06:19, D. Boland wrote:
>>>
>>> With the snapshot in place, the ftp client hangs indefinitely after entering the
>>> password. Switching back to my old Cygwin DLL, it works again.
>>
>> Which FTP client is that?  The ftp.exe that comes with Windows, the
>> ftp.exe from Cygwin's inetutils (?) package, or some other FTP client?
>
> I used the ftp program from the inetutils package.
>
> D.
>
>
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>
>
>

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Re: [ANNOUNCEMENT] Updated: Cygwin 1.7.31-1

[Corinna Vinschen]

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On Jul 21 14:19, D. Boland wrote:
> Hi Corinna,
> 
> Corinna Vinschen wrote:
> > 
> > [Now with correct subject, sorry]
> > 
> > Hi Cygwin friends and users,
> > 
> > I just released Cygwin 1.7.31-1.  This is mostely a bugfix release.
> > 
> 
> $ uname -a
> CYGWIN_NT-5.1 dimension 1.7.31s(0.272/5/3) 20140716 11:15:29 i686 Cygwin
> 
> With the snapshot in place, the ftp client hangs indefinitely after entering the
> password. Switching back to my old Cygwin DLL, it works again.

I could easily reproduce it.  The cause is our switch from defaulting to
PTHREAD_MUTEX_ERRORCHECK to PTHREAD_MUTEX_NORMAL to align the behaviour
more closely to Linux.

The problem is a mutex which is part of every (p)thread.  This mutex is
set to PTHREAD_MUTEX_RECURSIVE for all threads... except for the main
thread.

This is actually a long-standing bug.  By defaulting to
PTHREAD_MUTEX_ERRORCHECK the bug was just not visible.  Only by
switching to PTHREAD_MUTEX_NORMAL as default it became apparent,
so I'm rather glad this has been catched now.  This could have
subtil side-effects in multi-threaded applications.

I'm going to release a fixed 1.7.31-2 in a few minutes.


Thanks for the report,
Corinna

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

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