From 88b7523e13100629f86de7afc099b53dd672d1e4 Mon Sep 17 00:00:00 2001
From: "Evgeny Grin (Karlson2k)" <k2k@narod.ru>
Date: Thu, 6 Jan 2022 18:36:28 +0300
Subject: [PATCH] Fixed compiler warning in examples

---
 doc/examples/sessions.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/doc/examples/sessions.c b/doc/examples/sessions.c
index 6d6cf5ba..db311bd4 100644
--- a/doc/examples/sessions.c
+++ b/doc/examples/sessions.c
@@ -2,7 +2,9 @@
    you see fit (Public Domain) */
 
 /* needed for asprintf */
-#define _GNU_SOURCE
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
 
 #include <stdlib.h>
 #include <string.h>