From: Steve Reinhardt <steve.reinhardt@amd.com>
Date: Sat, 19 Jul 2014 09:06:22 +0000 (-0700)
Subject: syscall emulation: fix fast build issue
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=06bb6a473157a204bb7e77ea28e618aa08d2d811;p=gem5.git

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.
---

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