Combination of thread_local, inline, and std::t19937 causes thead_number to sporadically become 0

thread_local_bug.cpp

#include <random>

inline auto &prng_engine() {
  thread_local std::random_device rd{};
  thread_local std::mt19937 engine{rd()};
  return engine;
}

int main() {
  thread_local int32_t thead_number = 1;
  while (thead_number > 0) {
    std::uniform_int_distribution<int> dist{0, 1};
    dist(prng_engine());
  }
}