Fix a coding error in c-forward-<>-arglist-recur. Fixes bug#22156

* lisp/progmodes/cc-engine.el (c-forward-<>-arglist-recur): Remove unused
variable `tmp'.
After a failed search for a matching ">", restore point before continuing.

diff --git a/lisp/progmodes/cc-engine.el b/lisp/progmodes/cc-engine.el
index acc2eddff735b93e357bf0d8f20145d34f2410d8..dbc55f5e0ef53f1fcdbd07d0e7c5bcee607ea683 100644 (file)
--- a/lisp/progmodes/cc-engine.el
+++ b/lisp/progmodes/cc-engine.el
@@ -5964,7 +5964,7 @@ comment at the start of cc-engine.el for more info."
   ;; Recursive part of `c-forward-<>-arglist'.
   ;;
   ;; This function might do hidden buffer changes.
-  (let ((start (point)) res pos tmp
+  (let ((start (point)) res pos
        ;; Cover this so that any recorded found type ranges are
        ;; automatically lost if it turns out to not be an angle
        ;; bracket arglist.  It's propagated through the return value
@@ -6059,15 +6059,13 @@ comment at the start of cc-engine.el for more info."
                  ;; Either an operator starting with '<' or a nested arglist.
                  (setq pos (point))
                  (let (id-start id-end subres keyword-match)
-                  (cond
+                   (cond
                     ;; The '<' begins a multi-char operator.
                     ((looking-at c-<-op-cont-regexp)
-                     (setq tmp (match-end 0))
                      (goto-char (match-end 0)))
                     ;; We're at a nested <.....>
                     ((progn
-                       (setq tmp pos)
-                       (backward-char) ; to the '<'
+                       (backward-char) ; to the '<'
                        (and
                         (save-excursion
                           ;; There's always an identifier before an angle
@@ -6087,7 +6085,9 @@ comment at the start of cc-engine.el for more info."
                                  (and keyword-match
                                       (c-keyword-member
                                        (c-keyword-sym (match-string 1))
-                                       'c-<>-type-kwds)))))))
+                                       'c-<>-type-kwds))))))
+                       (or subres (goto-char pos))
+                       subres)
                      ;; It was an angle bracket arglist.
                      (setq c-record-found-types subres)
 
@@ -6103,11 +6103,11 @@ comment at the start of cc-engine.el for more info."
                            (c-record-ref-id (cons id-start id-end))
                         (c-record-type-id (cons id-start id-end)))))
 
-                   ;; At a "less than" operator.
-                   (t
-                    (forward-char)
-                    )))
-                t)                    ; carry on looping.
+                    ;; At a "less than" operator.
+                    (t
+                     ;; (forward-char) ; NO!  We've already gone over the <.
+                     )))
+                 t)                    ; carry on looping.
 
                 ((and (not c-restricted-<>-arglists)
                       (or (and (eq (char-before) ?&)