diff --git a/bad_efun.list b/bad_efun.list
new file mode 100644
index 0000000..a2651d7
--- /dev/null
+++ b/bad_efun.list
@@ -0,0 +1,23 @@
+allocate_mapping
+copy_mapping
+creator
+efun308
+file_name
+extract
+filter_array
+filter_mapping
+is_clone
+m_sizeof
+m_width
+map_array
+map_mapping
+mapping_contains
+member_array
+slice_array
+strlen
+file_date
+exclude_array
+@@.*@@
+enable_commands
+disable_commands
+efun:::*