thanks to ven++ for spotting this missing argument

MoarVM · Mar 29, 2017 · f39f605 · f39f605
1 parent a93f1ba
commit f39f605
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/6model/reprs/P6opaque.c b/src/6model/reprs/P6opaque.c
@@ -1147,7 +1147,7 @@ static void change_type(MVMThreadContext *tc, MVMObject *obj, MVMObject *new_typ
     /* Ensure we don't have a type object. */
     if (!IS_CONCRETE(obj))
         MVM_exception_throw_adhoc(tc,
-            "Cannot change the type of a %s type object");
+            "Cannot change the type of a %s type object", STABLE(obj)->debug_name);
 
     /* Ensure that the REPR of the new type is also P6opaque. */
     if (REPR(new_type)->ID != REPR(obj)->ID)