| Index: src/ast/ast-types.cc | 
| diff --git a/src/ast/ast-types.cc b/src/ast/ast-types.cc | 
| index a075e8e78735f57a78268aac4d50e40f91004f55..3f85f479e9e78cfeafd23522f085c6c6e1a8106f 100644 | 
| --- a/src/ast/ast-types.cc | 
| +++ b/src/ast/ast-types.cc | 
| @@ -208,6 +208,7 @@ AstType::bitset AstBitsetType::Lub(i::Map* map) { | 
| case JS_DATE_TYPE: | 
| case JS_CONTEXT_EXTENSION_OBJECT_TYPE: | 
| case JS_GENERATOR_OBJECT_TYPE: | 
| +    case JS_MODULE_NAMESPACE_TYPE: | 
| case JS_ARRAY_BUFFER_TYPE: | 
| case JS_ARRAY_TYPE: | 
| case JS_REGEXP_TYPE:  // TODO(rossberg): there should be a RegExp type. | 
|  |