static thread_local uintptr_t worker_id_;
+#if HAVE_SANITIZER_ADDRESS_FIBER_SUPPORT
+ const void* asan_stack_ = nullptr;
+ size_t asan_stack_size_ = 0;
+ SwappedContext* asan_ctx_ = nullptr;
+ bool asan_stop_ = false;
+#endif
+
private:
void* stack_ = nullptr; /* the thread stack */
SwappedContextFactory* const factory_; // for sequential and parallel run_all()