misc: Add explicit overrides and fix other clang >= 3.5 issues

This patch adds explicit overrides as this is now required when using
"-Wall" with clang >= 3.5, the latter now part of the most recent
XCode. The patch consequently removes "virtual" for those methods
where "override" is added. The latter should be enough of an
indication.

As part of this patch, a few minor issues that clang >= 3.5 complains
about are also resolved (unused methods and variables).

1 files changed, 3 insertions, 3 deletions

diff --git a/src/mem/ruby/system/RubyPort.hh b/src/mem/ruby/system/RubyPort.hh
index 98fab8c4e..58d2558dd 100644
--- a/src/mem/ruby/system/RubyPort.hh
+++ b/src/mem/ruby/system/RubyPort.hh
@@ -143,12 +143,12 @@ class RubyPort : public MemObject
     RubyPort(const Params *p);
     virtual ~RubyPort() {}
 
-    void init();
+    void init() override;
 
     BaseMasterPort &getMasterPort(const std::string &if_name,
-                                  PortID idx = InvalidPortID);
+                                  PortID idx = InvalidPortID) override;
     BaseSlavePort &getSlavePort(const std::string &if_name,
-                                PortID idx = InvalidPortID);
+                                PortID idx = InvalidPortID) override;
 
     virtual RequestStatus makeRequest(PacketPtr pkt) = 0;
     virtual int outstandingCount() const = 0;