From 4fe2bd4f66d1ae82c0d2842837edafe9e6febfc9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20H=C3=B6gberg?= <john@erlang.org>
Date: Thu, 28 Feb 2019 11:44:36 +0100
Subject: erts: Fix erl_printf on Solaris

flockfile(3c) and friends are hidden behind the __EXTENSIONS__
feature macro.
---
 erts/lib_src/common/erl_printf.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'erts/lib_src/common')

diff --git a/erts/lib_src/common/erl_printf.c b/erts/lib_src/common/erl_printf.c
index 259ba8c81d..86f5da1c40 100644
--- a/erts/lib_src/common/erl_printf.c
+++ b/erts/lib_src/common/erl_printf.c
@@ -27,6 +27,11 @@
 #include "config.h"
 #endif
 
+#if defined(__sun) || defined(__sun__)
+    /* For flockfile(3c), putc_unlocked(3c), etc */
+    #define __EXTENSIONS__
+#endif
+
 #include <string.h>
 #include "erl_errno.h"
 #ifdef __WIN32__
-- 
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