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.

1 files changed, 1 insertions, 1 deletions

diff --git a/kern/log.c b/kern/log.c
index a48afc5a..10131d12 100644
--- a/kern/log.c
+++ b/kern/log.c
@@ -459,7 +459,7 @@ INIT_OP_DEFINE(log_start,
 static void
 log_write(const void *s, size_t size)
 {
-    int error;
+    __unused int error;
 
     error = cbuf_push(&log_cbuf, s, size, true);
     assert(!error);