scons: Enable -Wextra by default

Make best use of the compiler, and enable -Wextra as well as
-Wall. There are a few issues that had to be resolved, but they are
all trivial.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/cpu/base_dyn_inst.hh b/src/cpu/base_dyn_inst.hh
index 77117b892..ebe882a88 100644
--- a/src/cpu/base_dyn_inst.hh
+++ b/src/cpu/base_dyn_inst.hh
@@ -793,13 +793,13 @@ class BaseDynInst : public ExecContext, public RefCounted
     void pcState(const TheISA::PCState &val) { pc = val; }
 
     /** Read the PC of this instruction. */
-    const Addr instAddr() const { return pc.instAddr(); }
+    Addr instAddr() const { return pc.instAddr(); }
 
     /** Read the PC of the next instruction. */
-    const Addr nextInstAddr() const { return pc.nextInstAddr(); }
+    Addr nextInstAddr() const { return pc.nextInstAddr(); }
 
     /**Read the micro PC of this instruction. */
-    const Addr microPC() const { return pc.microPC(); }
+    Addr microPC() const { return pc.microPC(); }
 
     bool readPredicate()
     {