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, 2 insertions, 2 deletions

diff --git a/src/sim/process.hh b/src/sim/process.hh
index b3a33bcd9..df007c9f2 100644
--- a/src/sim/process.hh
+++ b/src/sim/process.hh
@@ -120,7 +120,7 @@ class Process : public SimObject
     // constructor
     Process(ProcessParams *params);
 
-    virtual void initState();
+    void initState() override;
 
     DrainState drain() override;
 
@@ -156,7 +156,7 @@ class Process : public SimObject
     void inheritFDArray(Process *p);
 
     // override of virtual SimObject method: register statistics
-    virtual void regStats();
+    void regStats() override;
 
     // After getting registered with system object, tell process which
     // system-wide context id it is assigned.