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/semaphore.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'kern/semaphore.c')

diff --git a/kern/semaphore.c b/kern/semaphore.c
index 72e843a9..003f053c 100644
--- a/kern/semaphore.c
+++ b/kern/semaphore.c
@@ -20,6 +20,7 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <kern/macros.h>
 #include <kern/semaphore.h>
 #include <kern/semaphore_i.h>
 #include <kern/sleepq.h>
@@ -63,7 +64,7 @@ semaphore_wait_slow_common(struct semaphore *semaphore,
 void
 semaphore_wait_slow(struct semaphore *semaphore)
 {
-    int error;
+    __unused int error;
 
     error = semaphore_wait_slow_common(semaphore, false, 0);
     assert(!error);
-- 
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