PATCH: Use __asm__("rsp") to get URRENT_STACK_FRAME

[Roland McGrath]

> On Mon, Mar 19, 2012 at 3:39 PM, Roland McGrath <roland@hack.frob.com> wrote:
> >> Thanks for the pointer. Â Here is the updated patch. Â OK to install?
> >
> > You need to say what kind of testing you've done when posting a patch.
> 
> I tested on Linux/32 and Linux/x86-64.  There are no new failures in
> glibc tests.  OK to install?

Ok if there are also no new compile-time warnings with GCC 4.4 or later.