From d18d0e85596f90e0bd597b33d58209d0b3973c95 Mon Sep 17 00:00:00 2001
From: Richard Braun <rbraun@sceen.net>
Date: Fri, 1 Sep 2017 23:58:41 +0200
Subject: Make assert have no side effects

This makes sure symbols referenced by assert uses may not be generated
if unused. The recently introduced __unused macro is used to suppress
compiler warnings resulting from this change.
---
 kern/mutex/mutex_plain.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'kern/mutex/mutex_plain.c')

diff --git a/kern/mutex/mutex_plain.c b/kern/mutex/mutex_plain.c
index 2c655940..abfa3396 100644
--- a/kern/mutex/mutex_plain.c
+++ b/kern/mutex/mutex_plain.c
@@ -22,6 +22,7 @@
 
 #include <kern/atomic.h>
 #include <kern/init.h>
+#include <kern/macros.h>
 #include <kern/mutex.h>
 #include <kern/mutex_types.h>
 #include <kern/sleepq.h>
@@ -133,7 +134,7 @@ out:
 void
 mutex_plain_lock_slow(struct mutex *mutex)
 {
-    int error;
+    __unused int error;
 
     error = mutex_plain_lock_slow_common(mutex, false, 0);
     assert(!error);
-- 
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