From 233c91d32adff3978931fbc78c27ef1d1560cf96 Mon Sep 17 00:00:00 2001
From: Alan Mackenzie <acm@muc.de>
Date: Fri, 26 Aug 2022 15:51:21 +0000
Subject: [PATCH] CC Mode: Fontify correctly a brace list element followed only
 by syntactic WS

This fixes a regression introduced in the fix for bug #56841 on 2022-08-24.

* lisp/progmodes/cc-engine (c-forward-declarator): Allow point to be at EOB
after the call to c-forward-name, rather than rejecting it as an invalid
declarator.  Also reindent a section of this function.
---
 lisp/progmodes/cc-engine.el | 82 +++++++++++++++++++------------------
 1 file changed, 42 insertions(+), 40 deletions(-)

diff --git a/lisp/progmodes/cc-engine.el b/lisp/progmodes/cc-engine.el
index 1139423a455..b2d1f15d398 100644
--- a/lisp/progmodes/cc-engine.el
+++ b/lisp/progmodes/cc-engine.el
@@ -9459,7 +9459,8 @@ point unchanged and return nil."
 
 (defun c-forward-declarator (&optional limit accept-anon)
   ;; Assuming point is at the start of a declarator, move forward over it,
-  ;; leaving point at the next token after it (e.g. a ) or a ; or a ,).
+  ;; leaving point at the next token after it (e.g. a ) or a ; or a ,), or at
+  ;; end of buffer if there is no such token.
   ;;
   ;; Return a list (ID-START ID-END BRACKETS-AFTER-ID GOT-INIT DECORATED),
   ;; where ID-START and ID-END are the bounds of the declarator's identifier,
@@ -9499,44 +9500,44 @@ point unchanged and return nil."
 	   ;; of the while.  These are, e.g. "*" in "int *foo" or "(" and
 	   ;; "*" in "int (*foo) (void)" (Note similar code in
 	   ;; `c-forward-decl-or-cast-1'.)
-	      (while
-		  (cond
-		   ((looking-at c-decl-hangon-key)
-		    (c-forward-keyword-clause 1))
-		   ((and c-opt-cpp-prefix
-			 (looking-at c-noise-macro-with-parens-name-re))
-		    (c-forward-noise-clause))
-		   ((and (looking-at c-type-decl-prefix-key)
-			 (if (and (c-major-mode-is 'c++-mode)
-				  (match-beginning 4)) ; Was 3 - 2021-01-01
-			     ;; If the third submatch matches in C++ then
-			     ;; we're looking at an identifier that's a
-			     ;; prefix only if it specifies a member pointer.
-			     (progn
-			       (setq id-start (point))
-			       (c-forward-name)
-			       (if (save-match-data
-				     (looking-at "\\(::\\)"))
-				   ;; We only check for a trailing "::" and
-				   ;; let the "*" that should follow be
-				   ;; matched in the next round.
-				   t
-				 ;; It turned out to be the real identifier,
-				 ;; so flag that and stop.
-				 (setq got-identifier t)
-				 nil))
-			   t))
-		    (if (save-match-data
-			  (looking-at c-type-decl-operator-prefix-key))
-			(setq decorated t))
-		    (if (eq (char-after) ?\()
-			(progn
-			  (setq paren-depth (1+ paren-depth))
-			  (forward-char))
-		      (goto-char (or (match-end 1)
-				     (match-end 2))))
-		    (c-forward-syntactic-ws)
-		    t)))
+	   (while
+	       (cond
+		((looking-at c-decl-hangon-key)
+		 (c-forward-keyword-clause 1))
+		((and c-opt-cpp-prefix
+		      (looking-at c-noise-macro-with-parens-name-re))
+		 (c-forward-noise-clause))
+		((and (looking-at c-type-decl-prefix-key)
+		      (if (and (c-major-mode-is 'c++-mode)
+			       (match-beginning 4)) ; Was 3 - 2021-01-01
+			  ;; If the third submatch matches in C++ then
+			  ;; we're looking at an identifier that's a
+			  ;; prefix only if it specifies a member pointer.
+			  (progn
+			    (setq id-start (point))
+			    (c-forward-name)
+			    (if (save-match-data
+				  (looking-at "\\(::\\)"))
+				;; We only check for a trailing "::" and
+				;; let the "*" that should follow be
+				;; matched in the next round.
+				t
+			      ;; It turned out to be the real identifier,
+			      ;; so flag that and stop.
+			      (setq got-identifier t)
+			      nil))
+			t))
+		 (if (save-match-data
+		       (looking-at c-type-decl-operator-prefix-key))
+		     (setq decorated t))
+		 (if (eq (char-after) ?\()
+		     (progn
+		       (setq paren-depth (1+ paren-depth))
+		       (forward-char))
+		   (goto-char (or (match-end 1)
+				  (match-end 2))))
+		 (c-forward-syntactic-ws)
+		 t)))
 
 	   ;; If we haven't passed the identifier already, do it now.
 	   (unless got-identifier
@@ -9557,7 +9558,8 @@ point unchanged and return nil."
 	 (or (= paren-depth 0)
 	     (c-safe (goto-char (scan-lists (point) 1 paren-depth))))
 
-	 (< (point) limit)
+	 (or (eq (point) (point-max))	; No token after identifier.
+	     (< (point) limit))
 
 	 ;; Skip over any trailing bit, such as "__attribute__".
 	 (progn
-- 
2.39.2