From 688f3ec67db55e8b7e063175672e8ac64b011ed7 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 14 Dec 2012 18:59:12 +0000
Subject: [PATCH] vm_trace.c: suppress warning

* vm_trace.c (exec_hooks): suppress unused-variable warning by
  RB_UNUSED_VAR().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38384 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 vm_trace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/vm_trace.c b/vm_trace.c
index f5260149b3..9b8ec40b33 100644
--- a/vm_trace.c
+++ b/vm_trace.c
@@ -276,7 +276,8 @@ exec_hooks(rb_thread_t *th, rb_hook_list_t *list, const rb_trace_arg_t *trace_ar
 	rb_threadptr_set_raised(th);
     }
     {
-	rb_thread_t volatile *tmp = th;
+	/* maybe rb_thread_t *volatile? */
+	rb_thread_t volatile *RB_UNUSED_VAR(tmp) = th;
     }
 
     return state;