[Bug libstdc++/65142] std::random_device Ignores Read Return Code (CVE-2015-5276)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65142

--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can you please backport if the solution is the final one?