From 2da832e5dbe4a80acafac6a421a0b3e26633ce07 Mon Sep 17 00:00:00 2001
From: wanghengbing <wanghengbing@momenta.ai>
Date: Mon, 9 Aug 2021 18:05:23 +0800
Subject: [PATCH] add assert for null sink

---
 include/spdlog/logger-inl.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/spdlog/logger-inl.h b/include/spdlog/logger-inl.h
index fd841657..92cb27ff 100644
--- a/include/spdlog/logger-inl.h
+++ b/include/spdlog/logger-inl.h
@@ -178,7 +178,8 @@ SPDLOG_INLINE void logger::log_it_(const spdlog::details::log_msg &log_msg, bool
 SPDLOG_INLINE void logger::sink_it_(const details::log_msg &msg)
 {
     for (auto &sink : sinks_)
-    {
+    {   
+        assert(sink != nullptr);
         if (sink->should_log(msg.level))
         {
             SPDLOG_TRY
@@ -199,6 +200,7 @@ SPDLOG_INLINE void logger::flush_()
 {
     for (auto &sink : sinks_)
     {
+        assert(sink != nullptr);
         SPDLOG_TRY
         {
             sink->flush();