nested popen()'s lead to fgets() failure on 64-bit only
Corinna Vinschen
corinna-cygwin@cygwin.com
Mon Jan 13 17:19:00 GMT 2014
On Jan 13 11:38, David Levine wrote:
> Corinna wrote:
>
> > Not really. I have no idea why this fails for you. Does an strace
> > show anything suspicious?
>
> Yes, there's an exception, it looks like in WFMO. It's
> happens when closing handles after forking sh.exe for the
> second popen(). strace excerpt is below.
>
> The exception didn't happen after the first popen(). And I
> tried running with a minimal environment (env -i PATH=/usr/bin),
> which didn't help.
>
> David
>
>
> 1 1 [main] sh (426948) **********************************************
^^^^^^^^
Your PID values are pretty suspicious. Even on a busy machine they
should seldomly have more than 4 digits, let alone 6. The PIDs are only
getting high if process and other handles are hold and not closed by
another process. This looks a lot like a BLODA problem. Did you
check against http://cygwin.com/faq/faq.html#faq.using.bloda?
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Maintainer cygwin AT cygwin DOT com
Red Hat
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 819 bytes
Desc: not available
URL: <http://cygwin.com/pipermail/cygwin/attachments/20140113/ecc1aa0c/attachment.sig>
More information about the Cygwin
mailing list