X-Recipient: archive-cygwin@delorie.com X-SWARE-Spam-Status: No, hits=-1.8 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE X-Spam-Check-By: sourceware.org X-Mail-Handler: MailHop Outbound by DynDNS X-Report-Abuse-To: abuse@dyndns.com (see http://www.dyndns.com/services/mailhop/outbound_abuse.html for abuse reporting information) X-MHO-User: U2FsdGVkX1+pF4XwVeRIqLJHNqCQlOgL Date: Sat, 10 Mar 2012 20:33:39 -0500 From: Christopher Faylor To: cygwin@cygwin.com Subject: Re: Can't reliably redirect standard output from C# program in recent Cygwin Message-ID: <20120311013339.GA32518@ednor.casa.cgf.cx> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <004e01ccfd70$c69af3f0$53d0dbd0$@motionview3d.com> <005c01ccfd79$6341f980$29c5ec80$@motionview3d.com> <007201ccfe25$130065e0$390131a0$@motionview3d.com> <20120309195247.GB18960@calimero.vinschen.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120309195247.GB18960@calimero.vinschen.de> User-Agent: Mutt/1.5.20 (2009-06-14) Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com On Fri, Mar 09, 2012 at 08:52:47PM +0100, Corinna Vinschen wrote: >On Mar 9 18:47, James Johnston wrote: >> I can reproduce this: >> >> C:\cygwin\bin>perl -e 'print "abc";' >> abc >> C:\cygwin\bin>perl -e 'print "abc";' | more >> abc >> >> C:\cygwin\bin>perl -e 'print "abc";' | more >> abc >> >> C:\cygwin\bin>perl -e 'print "abc";' | more >> >> C:\cygwin\bin>perl -e 'print "abc";' | more >> >> C:\cygwin\bin>perl -e 'print "abc";' | more >> >> I also noticed that the failures took 1 or 2 seconds to run - a significant >> delay. The successful runs completed "instantly". > >The delay comes from writing a stackdump. > >I don't quite grok the stackdump, though. It seems to imply that the >fh->init call dtable::init_std_file_from_handle failed, but I didn't >manage to catch the problem in GDB so far. Corinna did manage to find where it was failing and I managed to fix this particular problem. It should be ok in the latest snapshot. I am dubious that this has anything to do with redirecting output from a C# program though. cgf -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple