From 93328bc707ef145566991118265744dc7ed7eee8 Mon Sep 17 00:00:00 2001
From: He Wei <hewei@huawei.com>
Date: Thu, 10 Feb 2022 21:09:48 +0800
Subject: [PATCH] Fix a logging api bug in MindAPI

---
 mindspore/core/mindapi/base/logging.h | 4 ++--
 tests/ut/cpp/mindapi/mindapi_test.cc  | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/mindspore/core/mindapi/base/logging.h b/mindspore/core/mindapi/base/logging.h
index 79b82afd083..614c541b9ae 100644
--- a/mindspore/core/mindapi/base/logging.h
+++ b/mindspore/core/mindapi/base/logging.h
@@ -1,5 +1,5 @@
 /**
- * Copyright 2021 Huawei Technologies Co., Ltd
+ * Copyright 2021-2022 Huawei Technologies Co., Ltd
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ class LogStream {
   /// \param[in] value The object to be written.
   template <typename T>
   LogStream &operator<<(T &&value) noexcept {
-    (void)stream_.operator<<(std::forward<T>(value));
+    stream_ << (std::forward<T>(value));
     return *this;
   }
 
diff --git a/tests/ut/cpp/mindapi/mindapi_test.cc b/tests/ut/cpp/mindapi/mindapi_test.cc
index 24ba636bffb..a92339852d6 100644
--- a/tests/ut/cpp/mindapi/mindapi_test.cc
+++ b/tests/ut/cpp/mindapi/mindapi_test.cc
@@ -407,10 +407,14 @@ TEST_F(TestMindApi, test_api_utils) {
 /// Description: test logging API.
 /// Expectation: logging work as expected.
 TEST_F(TestMindApi, test_api_logging) {
+  std::string name = "mindspore";
   MS_LOG(DEBUG) << "hello debug";
   MS_LOG(INFO) << "hello info";
   MS_LOG(WARNING) << "hello warning";
   MS_LOG(ERROR) << "hello error";
+  MS_LOG(ERROR) << name;
+  MS_LOG(ERROR) << "hello " << name;
+  MS_LOG(ERROR) << name << " hello";
   try {
     MS_LOG(EXCEPTION) << "hello exception";
     ASSERT_TRUE(false);