diff --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td b/clang/include/clang/Basic/DiagnosticSemaKinds.td
index bdcccac34c34..7bbd25b9342e 100644
--- a/clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -3422,7 +3422,7 @@ def err_redefinition : Error<"redefinition of %0">;
 def err_definition_of_implicitly_declared_member : Error<
   "definition of implicitly declared %select{default constructor|copy "
   "constructor|move constructor|copy assignment operator|move assignment "
-  "operator|destructor}1">;
+  "operator|destructor|function}1">;
 def err_definition_of_explicitly_defaulted_member : Error<
   "definition of explicitly defaulted %select{default constructor|copy "
   "constructor|move constructor|copy assignment operator|move assignment "
diff --git a/clang/test/CXX/special/class.inhctor/p8.cpp b/clang/test/CXX/special/class.inhctor/p8.cpp
index 0c857382e38c..effc2c3bca24 100644
--- a/clang/test/CXX/special/class.inhctor/p8.cpp
+++ b/clang/test/CXX/special/class.inhctor/p8.cpp
@@ -1,6 +1,5 @@
 // RUN: %clang_cc1 -std=c++11 -verify %s
 
-// expected-no-diagnostics
 struct A {
   constexpr A(const int&) : rval(false) {}
   constexpr A(const int&&) : rval(true) {}
@@ -28,3 +27,6 @@ struct D : C {
   using C::C;
 };
 static_assert(D(123).v == 123, "");
+
+// FIXME: This diagnostic sucks.
+template<typename T> constexpr D::D(T t) : C(t) {} // expected-error {{definition of implicitly declared function}}