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random: revert change from boost::optional to std::optional #21567

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merged 1 commit into from Apr 21, 2018
Merged

random: revert change from boost::optional to std::optional #21567

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4 changes: 2 additions & 2 deletions src/include/random.h
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Expand Up @@ -17,8 +17,8 @@

#include <mutex>
#include <random>
#include <optional>
#include <type_traits>
#include <boost/optional.hpp>

// Basic random number facility, adapted from N3551:
namespace ceph::util {
Expand Down Expand Up @@ -114,7 +114,7 @@ void randomize_rng()
template <typename EngineT>
EngineT& engine()
{
thread_local std::optional<EngineT> rng_engine;
thread_local boost::optional<EngineT> rng_engine;

if (!rng_engine) {
rng_engine.emplace(EngineT());
Expand Down