Make printf warnings refer to wint_t and wchar_t by name
in addition to underlying type.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146254 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/FormatString.cpp b/lib/Analysis/FormatString.cpp
index fe30847..2d56c23 100644
--- a/lib/Analysis/FormatString.cpp
+++ b/lib/Analysis/FormatString.cpp
@@ -228,7 +228,6 @@
       return false;
     }
       
-    case TypedefTy:
     case SpecificTy: {
       argTy = C.getCanonicalType(argTy).getUnqualifiedType();
       if (T == argTy)
@@ -332,7 +331,6 @@
     case AnyCharTy:
       return C.CharTy;
     case SpecificTy:
-    case TypedefTy:
       return T;
     case CStrTy:
       return C.getPointerType(C.CharTy);
@@ -354,9 +352,10 @@
 }
 
 std::string ArgTypeResult::getRepresentativeTypeName(ASTContext &C) const {
-  if (K != TypedefTy)
-    return std::string("'") + getRepresentativeType(C).getAsString() + "'";
-  return std::string("'") + Name + "' (aka '" + T.getAsString() + "')";
+  std::string S = getRepresentativeType(C).getAsString();
+  if (Name)
+    return std::string("'") + Name + "' (aka '" + S + "')";
+  return std::string("'") + S + "'";
 }