Introduce the canonical type smart pointers, and use them in a few places to
tighten up the static type system.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@78164 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index 76bd71c..0e42a71 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -1259,8 +1259,8 @@
 /// [special]p1).  This routine can only be executed just before the
 /// definition of the class is complete.
 void Sema::AddImplicitlyDeclaredMembersToClass(CXXRecordDecl *ClassDecl) {
-  QualType ClassType = Context.getTypeDeclType(ClassDecl);
-  ClassType = Context.getCanonicalType(ClassType);
+  CanQualType ClassType 
+    = Context.getCanonicalType(Context.getTypeDeclType(ClassDecl));
 
   // FIXME: Implicit declarations have exception specifications, which are
   // the union of the specifications of the implicitly called functions.