From 098223cf6d7214ba49815e06babd20dbbe85a79e Mon Sep 17 00:00:00 2001
From: Howard Hinnant <howard.hinnant@gmail.com>
Date: Tue, 7 Feb 2017 17:28:06 -0500
Subject: [PATCH] Second try at silencing "unused" warning for strerror_r

---
 tz.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tz.cpp b/tz.cpp
index 1f887c9..29486d9 100644
--- a/tz.cpp
+++ b/tz.cpp
@@ -3083,6 +3083,12 @@ current_zone()
 
 #else // !WIN32
 
+#ifdef __GNUC__
+// GCC complains about unused return from strerror_r
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-result"
+#endif
+
 const time_zone*
 current_zone()
 {
@@ -3160,6 +3166,10 @@ current_zone()
     throw std::runtime_error("Could not get current timezone");
 }
 
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+
 #endif // !WIN32
 
 #if defined(TZ_TEST) && defined(TIMEZONE_MAPPING)