[PATCH] D41316: [libcxx] Allow random_device to be built optionally

[Marshall Clow via Phabricator via cfe-commits]

mclow.lists added a comment.

[rand.device]/2 seems to be the authoritative word here:

  If implementation limitations prevent generating nondeterministic random numbers, the implementation may employ a random number engine.


https://reviews.llvm.org/D41316