From f7ff2d0ee34dc1d35b2f2fb9bafe1a5bae37a494 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Wed, 31 Jan 2018 12:09:06 +0900
Subject: Define compatibility only for `_MSC_VER`; ref #3923

Suggested by @mattn.
---
 mrbgems/mruby-socket/test/sockettest.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mrbgems/mruby-socket/test/sockettest.c b/mrbgems/mruby-socket/test/sockettest.c
index c6c2e494f..cad5cac6c 100644
--- a/mrbgems/mruby-socket/test/sockettest.c
+++ b/mrbgems/mruby-socket/test/sockettest.c
@@ -6,10 +6,11 @@
 
 #if defined(_WIN32) || defined(_WIN64)
 
+#ifdef _MSC_VER
+
 #define close _close
 #define unlink _unlink
 
-#ifdef _MSC_VER
 static int
 mkstemp(char *p)
 {
-- 
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