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, 2 deletions

diff --git a/src/sim/process.cc b/src/sim/process.cc
index cbafb62fe..0107f63a2 100644
--- a/src/sim/process.cc
+++ b/src/sim/process.cc
@@ -290,7 +290,8 @@ Process::allocateMem(Addr vaddr, int64_t size, bool clobber)
 {
     int npages = divCeil(size, (int64_t)PageBytes);
     Addr paddr = system->allocPhysPages(npages);
-    pTable->map(vaddr, paddr, size, clobber ? PageTableBase::Clobber : 0);
+    pTable->map(vaddr, paddr, size,
+                clobber ? PageTableBase::Clobber : PageTableBase::Zero);
 }
 
 bool
@@ -454,7 +455,7 @@ bool
 Process::map(Addr vaddr, Addr paddr, int size, bool cacheable)
 {
     pTable->map(vaddr, paddr, size,
-                cacheable ? 0 : PageTableBase::Uncacheable);
+                cacheable ? PageTableBase::Zero : PageTableBase::Uncacheable);
     return true;
 }