deleted copy op and a little format

include/spdlog/async_logger.h

@@ -78,5 +78,4 @@ private:
 };
 }
 
-
 #include "details/async_logger_impl.h"

include/spdlog/details/async_log_helper.h

@@ -136,6 +136,9 @@ public:
     // stop logging and join the back thread
     ~async_log_helper();
 
+    async_log_helper(const async_log_helper&) = delete;
+    async_log_helper& operator=(const async_log_helper&) = delete;
+
     void set_formatter(formatter_ptr);
 
     void flush(bool wait_for_q);
@@ -155,7 +158,6 @@ private:
 
     bool _terminate_requested;
 
-
     // overflow policy
     const async_overflow_policy _overflow_policy;
 

include/spdlog/details/registry.h

@@ -214,9 +214,9 @@ private:
     bool _async_mode = false;
     size_t _async_q_size = 0;
     async_overflow_policy _overflow_policy = async_overflow_policy::block_retry;
-    std::function<void()> _worker_warmup_cb = nullptr;
-    std::chrono::milliseconds _flush_interval_ms{ 0 };
-    std::function<void()> _worker_teardown_cb = nullptr;
+    std::function<void()> _worker_warmup_cb;
+    std::chrono::milliseconds _flush_interval_ms;
+    std::function<void()> _worker_teardown_cb;
 };
 
 #ifdef SPDLOG_NO_REGISTRY_MUTEX

include/spdlog/sinks/base_sink.h

@@ -25,7 +25,7 @@ template<class Mutex>
 class base_sink : public sink
 {
 public:
-    base_sink():_mutex() {}
+    base_sink() = default;
 
     base_sink(const base_sink&) = delete;
     base_sink& operator=(const base_sink&) = delete;

include/spdlog/sinks/sink.h

@@ -15,6 +15,7 @@ class sink
 {
 public:
     virtual ~sink() = default;
+
     virtual void log(const details::log_msg& msg) = 0;
     virtual void flush() = 0;