--- old/src/hotspot/share/jvmci/jvmciCodeInstaller.cpp	2018-01-02 17:23:08.000000000 -0800
+++ new/src/hotspot/share/jvmci/jvmciCodeInstaller.cpp	2018-01-02 17:23:07.000000000 -0800
@@ -600,6 +600,9 @@
 
   if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) {
     oop stubName = HotSpotCompiledCode::name(compiled_code_obj);
+    if (oopDesc::is_null(stubName)) {
+      JVMCI_ERROR_OK("stub should have a name");
+    }
     char* name = strdup(java_lang_String::as_utf8_string(stubName));
     cb = RuntimeStub::new_runtime_stub(name,
                                        &buffer,