CC Mode: Fix bug #39972, by fixing c-display-defun-name for nested defuns

* lisp/progmodes/cc-mode.el (c-common-init): Build
add-log-current-defun-function out of c-defun-name-and-limits instead of the
former c-defun-name.

1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/progmodes/cc-mode.el b/lisp/progmodes/cc-mode.el
index d822788bee2..b3b2374805d 100644
--- a/lisp/progmodes/cc-mode.el
+++ b/lisp/progmodes/cc-mode.el
@@ -795,7 +795,7 @@ compatible with old code; callers should always specify it."
   (set (make-local-variable 'outline-level) 'c-outline-level)
   (set (make-local-variable 'add-log-current-defun-function)
        (lambda ()
-         (or (c-cpp-define-name) (c-defun-name))))
+         (or (c-cpp-define-name) (car (c-defun-name-and-limits nil)))))
   (let ((rfn (assq mode c-require-final-newline)))
     (when rfn
       (if (boundp 'mode-require-final-newline)