[ANNOUNCEMENT] TEST RELEASE: Cygwin 2.1.0-0.1
Corinna Vinschen
corinna-cygwin@cygwin.com
Sat Jun 27 14:53:00 GMT 2015
On Jun 26 18:28, Ken Brown wrote:
> On 6/26/2015 4:05 PM, Corinna Vinschen wrote:
> >As for getrlimit(RLIMIT_STACK), I changed that as outlined in my former
> >mail in git. On second thought, I also changed the values of
> >MINSIGSTKSZ and SIGSTKSZ. Instead of 2K and 8K, they are now defined
> >as 32K and 64K. The reason is that we then have enough space on the
> >alternate stack to install a _cygtls area, should the need arise.
> >
> >I created new developer snapshots on https://cygwin.com/snapshots/
> >Please give them a try.
> >
> >Remember to tweak STACK_DANGER_ZONE. You'll have to rebuild emacs
> >anyway due to the change to [MIN]SIGSTKSZ.
>
> Hi Corinna and Ben,
>
> It works now, in the sense that emacs doesn't crash, and it produces the
> message "Re-entering top level after C stack overflow". I tested both
> 32-bit and 64-bit Cygwin. My test consisted of evaluating the following in
> the emacs *scratch* buffer:
>
> (setq max-specpdl-size 83200000
> max-lisp-eval-depth 640000)
> (defun foo () (foo))
> (foo)
>
> (The 'setq' is to override emacs's built-in protection against too-deeply
> nested lisp function calls.)
>
> On the other hand, emacs doesn't really make a full recovery. For example,
> if I try to call a subprocess (e.g., 'C-x d' to list a directory), I get a
> fork error:
>
> Debugger entered--Lisp error: (file-error "Doing vfork" "Resource
> temporarily unavailable")
The problem is probably that there are still resources in use which
didn't get free'd. I'll check next week if I can do anything about it.
Ideally with a simple testcase than emacs :}
> In view of what Ben said, I don't really care about this from the emacs
> point of view. I mention it only in case it's useful to you for testing the
> alternate stack.
Thanks,
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/20150627/1aa9b6ed/attachment.sig>
More information about the Cygwin
mailing list