Fix coding error in c-forward-decl-or-cast-1. This fixes bug #36492.

* lisp/progmodes/cc-engine.el (c-forward-decl-or-cast-1): While testing for,
e.g., foo(), check we've found the ( before trying to go to its position.

1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/progmodes/cc-engine.el b/lisp/progmodes/cc-engine.el
index 2d4046d5326..40a3b72f6a2 100644
--- a/lisp/progmodes/cc-engine.el
+++ b/lisp/progmodes/cc-engine.el
@@ -9472,6 +9472,7 @@ This function might do hidden buffer changes."
                            (not got-prefix)
                            (or (eq context 'top) make-top)
                            (eq (char-after) ?\))
+                           after-paren-pos
                            (or (memq at-type '(nil maybe))
                                (not got-identifier)
                                (save-excursion
@@ -9508,7 +9509,7 @@ This function might do hidden buffer changes."
             ;; (con|de)structors in C++ and `c-typeless-decl-kwds'
             ;; style declarations.  That isn't applicable in an
             ;; arglist context, though.
-            (when (and (> paren-depth 0)
+            (when (and (> paren-depth 0) ; ensures `after-paren-pos' is non-nil
                        (not got-prefix-before-parens)
                        (not (eq at-type t))
                        (or backup-at-type