diff --git a/lib/Sema/SemaInit.cpp b/lib/Sema/SemaInit.cpp
index 78328ab..be48c7e 100644
--- a/lib/Sema/SemaInit.cpp
+++ b/lib/Sema/SemaInit.cpp
@@ -4807,7 +4807,8 @@
                                   move(Args));
     }
     assert(Kind.getKind() == InitializationKind::IK_Copy ||
-           Kind.isExplicitCast());
+           Kind.isExplicitCast() || 
+           Kind.getKind() == InitializationKind::IK_DirectList);
     return ExprResult(Args.release()[0]);
   }
 
diff --git a/test/CXX/dcl.decl/dcl.init/dcl.init.list/basic.cpp b/test/CXX/dcl.decl/dcl.init/dcl.init.list/basic.cpp
index 5ebc22f..b30e0ec 100644
--- a/test/CXX/dcl.decl/dcl.init/dcl.init.list/basic.cpp
+++ b/test/CXX/dcl.decl/dcl.init/dcl.init.list/basic.cpp
@@ -1,5 +1,17 @@
-// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
 
 void f0() {
   int &ir = { 17 }; // expected-error{{reference to type 'int' cannot bind to an initializer list}}
 }
+
+namespace PR12453 {
+  template<typename T>
+  void f(int i) {
+    T x{i}; // expected-error{{non-constant-expression cannot be narrowed from type 'int' to 'float' in initializer list}} \
+    // expected-note{{override this message by inserting an explicit cast}}
+    T y{i}; // expected-error{{non-constant-expression cannot be narrowed from type 'int' to 'float' in initializer list}} \
+    // expected-note{{override this message by inserting an explicit cast}}
+  }
+
+  template void f<float>(int); // expected-note{{in instantiation of function template specialization 'PR12453::f<float>' requested here}}
+}