From 1450e1e3199bb26fe6944bfb4474755523b0cc88 Mon Sep 17 00:00:00 2001
From: Jouni Malinen <j@w1.fi>
Date: Sun, 29 Dec 2013 13:37:17 +0200
Subject: [PATCH] Define __maybe_unused

This can be used to silence compiler warnings in cases where #ifdef
blocks can leave some variables or functions unused and there is no
cleaner way of avoiding the warnings.

Signed-hostap: Jouni Malinen <j@w1.fi>
---
 src/utils/common.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/utils/common.h b/src/utils/common.h
index 7997deb8f..a85cc159d 100644
--- a/src/utils/common.h
+++ b/src/utils/common.h
@@ -459,6 +459,14 @@ typedef u64 __bitwise le64;
 #endif /* __GNUC__ */
 #endif /* __must_check */
 
+#ifndef __maybe_unused
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+#define __maybe_unused __attribute__((unused))
+#else
+#define __maybe_unused
+#endif /* __GNUC__ */
+#endif /* __must_check */
+
 int hwaddr_aton(const char *txt, u8 *addr);
 int hwaddr_compact_aton(const char *txt, u8 *addr);
 int hwaddr_aton2(const char *txt, u8 *addr);