Suppress docstring control char warning in macro-generated function

* lisp/progmodes/cc-defs.el (c-lang-defconst):
Make sure that `val` won't be treated as a docstring.

(cherry picked from commit eeb89a5cb292bffe40ba7d0b0cf81f82f8452bf8)

diff --git a/lisp/progmodes/cc-defs.el b/lisp/progmodes/cc-defs.el
index e45ab76ec07ce3ebba6af2a2deaaf1ae4fbac348..2c793c8a99d8003c7790d10b6a1ac8397023fcd5 100644 (file)
--- a/lisp/progmodes/cc-defs.el
+++ b/lisp/progmodes/cc-defs.el
@@ -2579,7 +2579,8 @@ constant.  A file is identified by its base name."
        ;; dependencies on the `c-lang-const's in VAL.)
        (setq val (c--macroexpand-all val))
 
-       (setq bindings `(cons (cons ',assigned-mode (lambda () ,val)) ,bindings)
+       (setq bindings `(cons (cons ',assigned-mode (lambda () nil ,val))
+                             ,bindings)
              args (cdr args))))
 
     ;; Compile in the other files that have provided source