* src/lisp.h: Tell developers to add new types to cl--typeof-types.

diff --git a/src/lisp.h b/src/lisp.h
index 616aea07805de8e90b07744e74fd2c888e628e92..d547c0c443058e478b28a21025048b1f6d320f8a 100644 (file)
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -583,7 +583,10 @@ enum Lisp_Fwd_Type
    resources allocated for it that are not Lisp objects.  You can even
    make a pointer to the function that frees the resources a slot in
    your object -- this way, the same object could be used to represent
-   several disparate C structures.  */
+   several disparate C structures.
+
+   You also need to add the new type to the constant
+   `cl--typeof-types' in lisp/emacs-lisp/cl-preloaded.el.  */
 
 
 /* A Lisp_Object is a tagged pointer or integer.  Ordinarily it is a