diff --git a/lib/Frontend/PCHReaderDecl.cpp b/lib/Frontend/PCHReaderDecl.cpp
index adf0d11..6856623 100644
--- a/lib/Frontend/PCHReaderDecl.cpp
+++ b/lib/Frontend/PCHReaderDecl.cpp
@@ -120,6 +120,7 @@
 void PCHDeclReader::VisitEnumDecl(EnumDecl *ED) {
   VisitTagDecl(ED);
   ED->setIntegerType(Reader.GetType(Record[Idx++]));
+  // FIXME: C++ InstantiatedFrom
 }
 
 void PCHDeclReader::VisitRecordDecl(RecordDecl *RD) {
diff --git a/lib/Frontend/PCHWriterDecl.cpp b/lib/Frontend/PCHWriterDecl.cpp
index 5d08334..ef04104 100644
--- a/lib/Frontend/PCHWriterDecl.cpp
+++ b/lib/Frontend/PCHWriterDecl.cpp
@@ -116,6 +116,7 @@
 void PCHDeclWriter::VisitEnumDecl(EnumDecl *D) {
   VisitTagDecl(D);
   Writer.AddTypeRef(D->getIntegerType(), Record);
+  // FIXME: C++ InstantiatedFrom
   Code = pch::DECL_ENUM;
 }