[Bug target/94087] std::random_device often fails when used from multiple threads

[a...@cloudius-systems.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94087

--- Comment #25 from Avi Kivity <a...@cloudius-systems.com> ---
Requesting a backport to gcc 10. We're hitting this even when not called in a
loop.