Avoid returning an invalid end source loc

llvm-svn: 338301
diff --git a/clang/include/clang/AST/DeclarationName.h b/clang/include/clang/AST/DeclarationName.h
index c9adcbb..856f3ab 100644
--- a/clang/include/clang/AST/DeclarationName.h
+++ b/clang/include/clang/AST/DeclarationName.h
@@ -558,7 +558,7 @@
   SourceLocation getBeginLoc() const { return NameLoc; }
 
   /// getEndLoc - Retrieve the location of the last token.
-  SourceLocation getEndLoc() const;
+  SourceLocation getEndLoc() const { return getLocEnd(); }
 
   /// getSourceRange - The range of the declaration name.
   SourceRange getSourceRange() const LLVM_READONLY {
@@ -570,9 +570,11 @@
   }
 
   SourceLocation getLocEnd() const LLVM_READONLY {
-    SourceLocation EndLoc = getEndLoc();
+    SourceLocation EndLoc = getEndLocPrivate();
     return EndLoc.isValid() ? EndLoc : getLocStart();
   }
+private:
+  SourceLocation getEndLocPrivate() const;
 };
 
 /// Insertion operator for diagnostics.  This allows sending DeclarationName's
diff --git a/clang/lib/AST/DeclarationName.cpp b/clang/lib/AST/DeclarationName.cpp
index 78c4b97..9866d92 100644
--- a/clang/lib/AST/DeclarationName.cpp
+++ b/clang/lib/AST/DeclarationName.cpp
@@ -689,7 +689,7 @@
   llvm_unreachable("Unexpected declaration name kind");
 }
 
-SourceLocation DeclarationNameInfo::getEndLoc() const {
+SourceLocation DeclarationNameInfo::getEndLocPrivate() const {
   switch (Name.getNameKind()) {
   case DeclarationName::Identifier:
   case DeclarationName::CXXDeductionGuideName: