[Bug c/100005] undefined reference to `_rdrand64_step'

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100005

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Because it's declared as:

extern __inline int
__attribute__((__gnu_inline__, __always_inline__, __artificial__))
_rdrand64_step (unsigned long long *__P)


The artificial attribute prevents taking the address.