Note that the `values' variable is now obsolete

* src/lread.c (syms_of_lread): Note that it's obsolete in the doc
string (because we can't mark it as obsolete "properly" yet,
because that leads to compilation warnings when somebody
(let (values) ... values).

etc/NEWS

@@ -2217,6 +2217,8 @@ back in Emacs 23.1.  The affected functions are: 'make-obsolete',
 
 * Lisp Changes in Emacs 28.1
 
+** The 'values' variable is now obsolete.
+
 ---
 ** New variable 'indent-line-ignored-functions'.
 This allows modes to cycle through a set of indentation functions

src/lread.c

@@ -4833,7 +4833,8 @@ to find all the symbols in an obarray, use `mapatoms'.  */);
 
   DEFVAR_LISP ("values", Vvalues,
 	       doc: /* List of values of all expressions which were read, evaluated and printed.
-Order is reverse chronological.  */);
+Order is reverse chronological.
+This variable is obsolete as of Emacs 28.1 and should not be used.  */);
   XSYMBOL (intern ("values"))->u.s.declared_special = false;
 
   DEFVAR_LISP ("standard-input", Vstandard_input,