Ucontext stuff was being deprecated in Leopard was my understanding and that 
support for it would be shoddy.

Time to roll our own?  Didn't you already do this?

Thanks also to David!

Sent from my iPhone

On Sep 26, 2011, at 9:34 AM, Russ Cox <r...@swtch.com> wrote:

> Thanks to heroic effort by David Jeannot,
> there is a new Cocoa-based OS X devdraw that
> seems to work well enough that I made it the
> default even on Snow Leopard.
> 
> If you do the usual hg pull -u; ./INSTALL you'll get it.
> 
> I think the only pending Lion issue now is that
> people using Xcode 4.1 don't have working threads.
> I haven't tracked that down yet.  I suspect the
> getcontext/setcontext routines in that Xcode are
> just broken.
> 
> Russ

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