js185 package problem (was Re: Seg Fault in strftime)

[Corinna Vinschen <corinna-cygwin@cygwin.com>]

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On Aug 16 20:00, Michael Enright wrote:
> On Wed, Aug 5, 2015 at 1:02 AM, Corinna Vinschen  wrote:
> > On Aug  3 23:33, Michael Enright wrote:
> >> On Mon, Aug 3, 2015 at 9:52 AM, Michael Enright wrote:
> >> > I'm interested in a solution at the libmozjs level
> >>
> >> Is there anything I can do to advance a solution in libmozjs?
> >
> > You could report the problem upstream, ideally.  Since the behaviour
> > is not restricted to Cygwin (at least glibc and OpenBSD both use the
> > same way to handle tm_zone/tm_gmtoff in strftime), they should be
> > interested in a fix.
> 
> Looking at the upstream source it seems that they (mozilla.org) have
> done something to allow their configure script to detect tm_zone's
> presence. If the related configure variable HAVE_TM_ZONE_TM_GMTOFF is
> defined as a result of configure's testing, then some code is enabled
> that has the goal of getting those fields populated in the struct tm
> that is passed to strftime. The steps are to transfer values from the
> pseudo-tm struct they use to a temporary struct tm, call mktime with
> that to get a time_t, pass the time_t to localtime_r, and then use the
> resulting tm_zone and tm_gmtoffset values in the struct tm that they
> pass to strftime. To me this all means that mozilla.org has the proper
> code available and machinery to activate it.
> 
> I think the only reason there's a crash is because this mozilla.org
> code is not enabled in cygwin's libmozjs185 for some reason.
> 
> I cloned the git repo that mozilla.org makes available and ran the
> configure script. I was not able to build from the resulting setup,
> but I was able to confirm that the HAVE_TM_ZONE_TM_GMTOFF macro is
> defined. So the mozilla.org configure script does detect the members
> on current Cygwin headers. Since that is the case the next step is to
> look specifically at how libmozjs185 is built for distribution within
> Cygwin.
> 
> Is there a possibility that the maintainer of Cygwin's library uses
> hand-modified configure output to get around some problem, and that
> stuff needs to be tweaked?

Maybe the package just needs rebuilding.  Yaakov?


Corinna

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

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