Not set a class/module name into anonymous class/module
MODIFY
src/variable.c
src/variable.c
@@ -1069,8 +1069,10 @@ mrb_class_find_path(mrb_state *mrb, struct RClass *c)
str = mrb_sym2name_len(mrb, name, &len);
mrb_str_cat(mrb, path, str, len);
+ if (RSTRING_PTR(path)[0] != '#') {
iv_del(mrb, c->iv, mrb_intern_lit(mrb, "__outer__"), NULL);
iv_put(mrb, c->iv, mrb_intern_lit(mrb, "__classname__"), path);
mrb_field_write_barrier_value(mrb, (struct RBasic*)c, path);
+ }
return path;
}

Not set a class/module name into anonymous class/module