From 06bb6a473157a204bb7e77ea28e618aa08d2d811 Mon Sep 17 00:00:00 2001
From: Steve Reinhardt <steve.reinhardt@amd.com>
Date: Sat, 19 Jul 2014 02:06:22 -0700
Subject: [PATCH] syscall emulation: fix fast build issue

Surprisingly gcc will complain about unused variables even
inside an 'if (false)' block.

I thought I had tested this previously, but apparently not.
---
 src/sim/syscall_emul.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc
index ff22aea54..fa18b910f 100644
--- a/src/sim/syscall_emul.cc
+++ b/src/sim/syscall_emul.cc
@@ -57,7 +57,7 @@ SyscallDesc::doSyscall(int callnum, LiveProcess *process, ThreadContext *tc)
 {
     if (DTRACE(SyscallVerbose)) {
         int index = 0;
-        IntReg arg[4];
+        IntReg arg[4] M5_VAR_USED;
 
         // we can't just put the calls to getSyscallArg() in the
         // DPRINTF arg list, because C++ doesn't guarantee their order
-- 
2.30.2