[Bug libstdc++/80977] uniform_int_distribution downscaling throws away perfectly good entropy

[g...@christoph-conrads.name]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80977

--- Comment #3 from Christoph Conrads <g...@christoph-conrads.name> ---
With GCC bug 80977, half of all values from the random bit generator may be
ignored by std::uniform_int_distribution.