Re: IPC::Run test hang under 5.8.5 and 5.8.6

Yitzchak Scott-Thoennes wrote:

> On Wed, Dec 01, 2004 at 07:45:56PM +0100, "Gerrit P. Haase" <[email protected]> wrote:
> 
>>Yitzchak Scott-Thoennes wrote:
>>
>>
>>>Upgrading from my 5.8.4 to 5.8.6, I found this.  cygwin dll is 1.5.12.
>>>
>>>IPC::Run is hanging in t/run after test 62.  The hang happens in this:
>>>
>>>$ perl5.8.6 -MIPC::Run=run -we'$in="-"x 20000 ."end\n";$out="REPLACE ME"; run([
>>>$^X, ("-e", qq!print"="x20000;<STDIN>;!)],\$in,\$out)'
> 
> 
> I should have clarified that IPC::Run is a CPAN module, not in the perl core,
> and that despite this one test failure, it seems to be working fine.
> 
> I'm going to try to reduce the problem to a C equivalent and see if that
> sheds any light.
> 
> 
>>>but not under my 5.8.4 build.  The cygwin release of 5.8.5 also hangs.
>>>Not sure what to make of this; there have been some pipe changes in cygwin
>>>recently, but I'd expect 5.8.4 to fail also if it were due to those.
>>>
>>>Anyone have any ideas or advice?
>>>
>>
>>Remove 5.8.5 from the distribtion and release 5.8.4 as stable and don't
>>update until perl is fixed.
> 
> 
> Yikes, don't do that.  At least not without further investigation.  I
> now see that 5.8.1 through 5.8.3 are also having the IPC::Run failure;
> I suspect that my 5.8.4 build works is either just chance or some
> configure option I set differently, and that the true fault lies with
> something about my system or with cygwin.
> 
> 
>>I have not investigated much about the recent perl problems, there are 
>>lots of threads tests failing too so in this state no update can be
>>released.  If I build without threads then the IPC issues are remaining.
>>BTW I saw more than just one error with IPC tests but no hangs.
> 
> 
> 1.5.11 had thread problems; 1.5.12 does not for me.  What are you
> seeing?
> 
> WRT IPC tests, are these core tests that are failing?  Do you have
> cygserver running and "server" in the CYGWIN variable?  If not, some
> tests can be expected to fail.

This was bleadperl at 22511:

Failed 5/930 test scripts, 99.46% okay. 29/97870 subtests failed, 99.97% 
okay.
Failed Test                      Stat Wstat Total Fail  Failed  List of 
Failed
--------------------------------------------------------------------------------------------------------------
../ext/Cwd/t/cwd.t                  1   256    27    1   3.70%  21
../ext/IPC/SysV/t/ipcsysv.t        22  5632    16   22 137.50%  3-4 7-16
../ext/IPC/SysV/t/msg.t                         9    5  55.56%  3-4 7-9
../ext/IPC/SysV/t/sem.t            28  7168    10   10 100.00%  1-10
../lib/Net/Ping/t/510_ping_udp.t                2    1  50.00%  2
  (1 subtest UNEXPECTEDLY SUCCEEDED), 53 tests and 525 subtests skipped.

IIRC it looks the same with 5.8.6.


> I don't have any core tests failing on 5.8.6 except io/tell.t test 28
> (which patches 23491 and 23492 quieten) and a Cwd test of
> Cwd::_perl_abs_path on a symlink, where _perl_abs_path is a pure perl
> function used by some platforms (but not cygwin) as Cwd::abs_path.
> Neither of these tests are of any real significance.
> 
> 
>>5.8.5 was compiled without IPC support.
> 
> 
> What do you mean IPC support?  IPC::SysV appears to be there,
> and there's no reason to disable IPC support that I know of.

Oops.  Probably it was enabled automatically by Configure, fine.


>>So I would remove it until it is fixed, but removing threads support
>>would break binary compatibility once again.  However I tend to
>>remove it for now and try to get it fixed for perl 5.10.
> 
> 
> Again, I don't see any thread problems except on 1.5.11.

Hmmm, my build machine has still 1.5.11, I'll upgrade and try again.
Maybe the IPC related error are resolved then too.


Gerrit
-- 
=^..^=


------------------------ Yahoo! Groups Sponsor --------------------~--> 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/ndFolB/TM
--------------------------------------------------------------------~-> 

 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/cygwin-perl/

<*> To unsubscribe from this group, send an email to:
    [email protected]

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/