On Sat, Dec 14, 2002 at 12:27:44AM -0500, Christopher Faylor wrote: >On Fri, Dec 13, 2002 at 03:48:28PM +0100, Pavel Holejsovsky wrote: >>[EMAIL PROTECTED] wrote: >>>Christopher Faylor wrote: >>>>On Thu, Dec 12, 2002 at 07:32:16AM -0500, Norman Vine wrote: >>>>>Any 'tips' as to how to best debug this appreciated >>>> >>>>- Attach to the hung process with gdb and see where it is hung. >>>> >>>>- Provide cygcheck output. >>>> >>>>- Run under strace and see if you can infer where hangs or problems >>>> are occurring. >> >>The hung process (sed) is actually not hung, but connected to stdin >>instead of file. The root cause is that when config.status is processed >>by bash, then sometimes `` construct forgets all output, causing >>different generated file names to be empty, thus connecting sed to stdin >>instead of some file. Following command line reproduces the bug for me: >> >>while true; do test "`echo foo`" = "foo" || echo failed; done >> >>When this command is run inside bash, then "failed" lines appear quite >>regularly. The bug is reproducible only with /bin/bash, /bin/sh works >>reliably. > >I meant to test the above before I made some more changes to cygwin >to attempt to avoid data loss but I didn't get around to it. > >So, there is a snapshot up there which may or may not solve the problem. >The above command doesn't die for me now, so I guess that's something. > >I'll check the prevous snapshot tomorrow to see if it actually fails for >me. I've been a little sick for a couple of weeks now and attempting to >stay with my "work on real job in the day and cygwin at night" scenario >is not working too well. > >In the meantime, please try the current snapshot. It is probably >slightly (but possibly unoticeably) slower but it should be very much >less likely to lose data in a pipe. > >The latest snapshot also has some new inline assembly functions courtesy >of some cygwin-developers (Gary R. Van Sickle and Thomas Pfaff) which >might cause a little bit of a boost, too.
Nevermind. I just tried the current snapshot on my NT4 machien and it puked all over the place. I'll fix it tomorrow. Please avoid this snapshot until then. cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
