diff --git a/clang/lib/AST/ODRHash.cpp b/clang/lib/AST/ODRHash.cpp
index 364fd04..ee69506 100644
--- a/clang/lib/AST/ODRHash.cpp
+++ b/clang/lib/AST/ODRHash.cpp
@@ -148,6 +148,8 @@
       AddQualType(TA.getAsType());
       break;
     case TemplateArgument::Declaration:
+      AddDecl(TA.getAsDecl());
+      break;
     case TemplateArgument::NullPtr:
     case TemplateArgument::Integral:
       break;
@@ -330,6 +332,15 @@
 
     AddQualType(D->getReturnType());
 
+    const auto* SpecializationArgs = D->getTemplateSpecializationArgs();
+    Hash.AddBoolean(SpecializationArgs);
+    if (SpecializationArgs) {
+      ID.AddInteger(SpecializationArgs->size());
+      for (const TemplateArgument &TA : SpecializationArgs->asArray()) {
+        Hash.AddTemplateArgument(TA);
+      }
+    }
+
     Inherited::VisitFunctionDecl(D);
   }