[PATCH] x86: Add __sigsetjmp_cancel and __setjmp_cancel

[Joseph Myers]

On Thu, 15 Mar 2018, H.J. Lu wrote:

> +extern int __sigsetjmp_cancel (struct __jmp_buf_tag *__env, int __savemask)
> +  __THROWNL __attribute__((__returns_twice__));

I think you should define __attribute_returns_twice__ in misc/sys/cdefs.h 
(defined to empty if !__GNUC_PREREQ (4, 1)), then use it here.

Missing space before '(' after __attribute__.

-- 
Joseph S. Myers
joseph@codesourcery.com