1 files changed, 19 insertions, 1 deletions
diff --git a/clang/lib/AST/ODRHash.cpp b/clang/lib/AST/ODRHash.cpp
index 08593da89bb..b260bad9d37 100644
--- a/clang/lib/AST/ODRHash.cpp
+++ b/clang/lib/AST/ODRHash.cpp
@@ -140,7 +140,25 @@ void ODRHash::AddTemplateName(TemplateName Name) {
   }
 }
 
-void ODRHash::AddTemplateArgument(TemplateArgument TA) {}
+void ODRHash::AddTemplateArgument(TemplateArgument TA) {
+  auto Kind = TA.getKind();
+  ID.AddInteger(Kind);
+
+  switch (Kind) {
+  case TemplateArgument::Null:
+  case TemplateArgument::Declaration:
+  case TemplateArgument::NullPtr:
+  case TemplateArgument::Integral:
+  case TemplateArgument::Template:
+  case TemplateArgument::TemplateExpansion:
+  case TemplateArgument::Expression:
+  case TemplateArgument::Pack:
+    break;
+  case TemplateArgument::Type:
+    AddQualType(TA.getAsType());
+    break;
+  }
+}
 void ODRHash::AddTemplateParameterList(const TemplateParameterList *TPL) {}
 
 void ODRHash::clear() {