20120523: bug in fork/exec

Corinna Vinschen corinna-cygwin@cygwin.com
Tue May 29 12:18:00 GMT 2012

On May 25 15:10, Yaakov (Cygwin/X) wrote:
> On 2012-05-25 04:40, Corinna Vinschen wrote:
> >On May 25 03:26, Yaakov (Cygwin/X) wrote:
> >>With the 20120523 snapshot, if a process attempts to fork/exec
> >
> >Which snapshot shows this effect first?
> Ouch, it starts with 20120309.

Thanks.  That would mean a single change is the culprit, but I need
a way to reproduce the problem to be able to fix it (other than just
reverting the patch).

> FWIW, here is the fork() code I discovered this with:
> http://git.gnome.org/browse/glib/tree/glib/gspawn.c?id=2.32.3

That's a bit heavy as far as testcases go.  Thing is, I can't reproduce
it.  If that's a generic problem, shouldn't this also occur when trying
to start a program from bash or tcsh?  I deliberately removed a DLL from
my system, but there is no hang at all when trying to start an affected

Can you please provide a simple testcase?  If you can reproduce it with
given binaries from the distro, I don't need source code, just the steps
and the names of the binaries to reproduce.


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

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