Variable: cwarn-mode-hook
cwarn-mode-hook is a customizable variable defined in cwarn.el.gz.
Value
(cwarn-mode--set-explicitly(var)/cwarn-mode--set-explicitly(fun))
Documentation
Hook run after entering or leaving cwarn-mode(var)/cwarn-mode(fun).
No problems result if this variable is not bound.
add-hook automatically binds it. (This is true for all hook variables.)
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/cwarn.el.gz