Fix warnings

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@53133 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/AST/Expr.h b/include/clang/AST/Expr.h
index e821cc3..afe1c4b 100644
--- a/include/clang/AST/Expr.h
+++ b/include/clang/AST/Expr.h
@@ -177,10 +177,10 @@
   ConstExprIterator& operator++() { ++I; return *this; }
   ConstExprIterator operator+(size_t i) { return I+i; }
   ConstExprIterator operator-(size_t i) { return I-i; }
-  Expr * const operator[](size_t idx) { return cast<Expr>(I[idx]); }
+  Expr * operator[](size_t idx) const { return cast<Expr>(I[idx]); }
   signed operator-(const ConstExprIterator& R) const { return I - R.I; }
-  Expr * const operator*() const { return cast<Expr>(*I); }
-  Expr * const operator->() const { return cast<Expr>(*I); }
+  Expr * operator*() const { return cast<Expr>(*I); }
+  Expr * operator->() const { return cast<Expr>(*I); }
   bool operator==(const ConstExprIterator& R) const { return I == R.I; }
   bool operator!=(const ConstExprIterator& R) const { return I != R.I; }
   bool operator>(const ConstExprIterator& R) const { return I > R.I; }
diff --git a/include/clang/Parse/DeclSpec.h b/include/clang/Parse/DeclSpec.h
index dc76995..efe726d 100644
--- a/include/clang/Parse/DeclSpec.h
+++ b/include/clang/Parse/DeclSpec.h
@@ -337,7 +337,7 @@
   void setObjCDeclQualifier(ObjCDeclQualifier DQVal) 
     { objcDeclQualifier = (ObjCDeclQualifier) (objcDeclQualifier | DQVal); }
   
-  const ObjCPropertyAttributeKind getPropertyAttributes() const 
+  ObjCPropertyAttributeKind getPropertyAttributes() const 
     { return ObjCPropertyAttributeKind(PropertyAttributes); }
   void setPropertyAttributes(ObjCPropertyAttributeKind PRVal) { 
     PropertyAttributes =