Index: lib/Sema/SemaDeclCXX.cpp
===================================================================
--- lib/Sema/SemaDeclCXX.cpp
+++ lib/Sema/SemaDeclCXX.cpp
@@ -13870,6 +13870,9 @@
   if (Fn->isMain())
     Diag(DelLoc, diag::err_deleted_main);
 
+  // C++11 [dcl.fct.def.delete]p4:
+  //  A deleted function is implicitly inline.
+  Fn->setImplicitlyInline();
   Fn->setDeletedAsWritten();
 }
 
Index: test/Modules/Inputs/merge-decl-context/a.h
===================================================================
--- test/Modules/Inputs/merge-decl-context/a.h
+++ test/Modules/Inputs/merge-decl-context/a.h
@@ -24,5 +24,6 @@
 struct Aggregate {
   int member;
 };
+bool operator==(Aggregate, Aggregate) = delete;
 
 #endif