From 3d20415871bc39509a4890d13a641ff31261059b Mon Sep 17 00:00:00 2001
From: raisinten <raisinten@gmail.com>
Date: Fri, 8 Jan 2021 18:27:10 +0530
Subject: [PATCH] test: fix warning in test_environment.cc
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```
warning log:
../test/cctest/test_environment.cc: In constructor   \
‘RedirectStdErr::RedirectStdErr(const char*)’:
../test/cctest/test_environment.cc:77:12: warning:   \
ignoring return value of ‘FILE* freopen(const char*, \
const char*, FILE*)’, declared with attribute
warn_unused_result [-Wunused-result]
     freopen(filename_, "w", stderr);
     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
```

PR-URL: https://github.com/nodejs/node/pull/36846
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
---
 test/cctest/test_environment.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/cctest/test_environment.cc b/test/cctest/test_environment.cc
index 862dfd5780868a..e9c81dc97ddbf1 100644
--- a/test/cctest/test_environment.cc
+++ b/test/cctest/test_environment.cc
@@ -1,6 +1,7 @@
 #include "node_buffer.h"
 #include "node_internals.h"
 #include "libplatform/libplatform.h"
+#include "util.h"
 
 #include <string>
 #include "gtest/gtest.h"
@@ -10,6 +11,7 @@
 
 using node::AtExit;
 using node::RunAtExit;
+using node::USE;
 
 static bool called_cb_1 = false;
 static bool called_cb_2 = false;
@@ -74,7 +76,7 @@ class RedirectStdErr {
     fflush(stderr);
     fgetpos(stderr, &pos_);
     fd_ = dup(fileno(stderr));
-    freopen(filename_, "w", stderr);
+    USE(freopen(filename_, "w", stderr));
   }
 
   ~RedirectStdErr() {