CC Mode: Fix error in cache handling. This fixes bug #43481

* lisp/progmodes/cc-engine.el (c-full-pp-to-literal): Handle correctly END
being before HERE by using parse-partial-sexp to get the end of the literal
containing HERE.

diff --git a/lisp/progmodes/cc-engine.el b/lisp/progmodes/cc-engine.el
index babe6e7476082adc333fe10a808b919ce0b36d4b..01ab253ceba9be8e3266749aef3cbea24500474c 100644 (file)
--- a/lisp/progmodes/cc-engine.el
+++ b/lisp/progmodes/cc-engine.el
@@ -3155,7 +3155,7 @@ comment at the start of cc-engine.el for more info."
                      ((nth 7 s) 'c++)
                      (t 'c)))
            (setq start (nth 8 s))
-           (unless end
+           (unless (and end (>= end here))
              (setq s1 (parse-partial-sexp here (point-max)
                                           nil            ; TARGETDEPTH
                                           nil            ; STOPBEFORE