pthread_cleanup_push_defer_np.3: missing functions in glibc

[Alejandro Colomar (man-pages)]

Hi Michael, Florian,

While adding 'restrict' to the prototypes, I found that the functions 
defined in this page don't exist on glibc (or I couldn't find them).
I tried removing _np, and still no luck, and 'git log --grep' didn't 
help either.  Where these functions removed at some point?

Thanks,

Alex

-- 
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/