diff --git a/clang/lib/CodeGen/CGRTTI.cpp b/clang/lib/CodeGen/CGRTTI.cpp
index b8d234f..c73b199 100644
--- a/clang/lib/CodeGen/CGRTTI.cpp
+++ b/clang/lib/CodeGen/CGRTTI.cpp
@@ -196,8 +196,9 @@
       
     case BuiltinType::Overload:
     case BuiltinType::Dependent:
+    case BuiltinType::BoundMember:
     case BuiltinType::UnknownAny:
-      assert(false && "Should not see this type here!");
+      llvm_unreachable("asking for RRTI for a placeholder type!");
       
     case BuiltinType::ObjCId:
     case BuiltinType::ObjCClass: