fix ia64 longjmp() to work from alternate signal-stack

[Ulrich Drepper]

David Mosberger wrote:

> Were you able to get clarification on this issue already?

Getting a formal answer will take a while.  One reply I got indicated
that indeed the altstack is not switched.  So, the public siglongjmp
interface need not handle this, just the exception handling stuff.  If
it turns out that we want the siglongjmp code to handle this as well
some day, we still can enable it.  For now, changing your patch to just
implement the cancellation appropriately should go in.

-- 
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖