Removed error counter from default error handler

include/spdlog/logger-inl.h

@@ -174,16 +174,15 @@ SPDLOG_INLINE void logger::err_handler_(const std::string &msg) {
     }  else {
         using std::chrono::system_clock;
         auto now = system_clock::now();
-        auto err_counter_val = err_counter.fetch_add(1, std::memory_order_relaxed)+1;
         auto tm_time = details::os::localtime(system_clock::to_time_t(now));
         char date_buf[64];
         std::strftime(date_buf, sizeof(date_buf), "%Y-%m-%d %H:%M:%S", &tm_time);
         #if defined(USING_R) && defined(R_R_H)  // if in R environment
-            REprintf("[*** LOG ERROR #%04zu ***] [%s] [%s] %s\n",
+            REprintf("[*** LOG ERROR ***] [%s] [%s] %s\n",
-                err_counter_val, date_buf, name().c_str(), msg.c_str());
+                date_buf, name().c_str(), msg.c_str());
         #else
-            std::fprintf(stderr, "[*** LOG ERROR #%04zu ***] [%s] [%s] %s\n", err_counter_val, date_buf,
+            std::fprintf(stderr, "[*** LOG ERROR ***] [%s] [%s] %s\n",
-                name().c_str(), msg.c_str());
+                date_buf, name().c_str(), msg.c_str());
         #endif
     }
 }

include/spdlog/logger.h

@@ -311,7 +311,6 @@ protected:
     spdlog::level_t flush_level_{level::off};
     err_handler custom_err_handler_{nullptr};
     details::backtracer tracer_;
-    std::atomic<size_t> err_counter{0};
 
     // common implementation for after templated public api has been resolved
     template <typename... Args>