Package: cc-mode

I run cc-mode with c parse state debugging turned on.  In the course of
normal usage, I found a file that reliably triggers a cache state
inconsistency.  (This is a courtesy report.  I'm not actually
encountering any bad cc-mode behavior right now.)

Reproducer:

emacs -Q
C-x C-f test.h RET
M-x c-toggle-parse-state-cache RET
M-x what-line
C-v
M-x what-line


The resulting log in *Messages*:

c-debug-parse-state enabled
Line 1
c-parse-state inconsistency at 2465: using cache: (2462 (1208 . 1674)), from scratch: (2462 (1863 . 2060)).  POINT-MIN: 1
Old state:
(setq c-state-cache '(2233 2219 2150 (1863 . 2060))  c-state-cache-good-pos 2151  c-state-nonlit-pos-cache nil  c-state-nonlit-pos-cache-limit 1  c-state-brace-pair-desert '(1 . 1208)  c-state-point-min 1  c-state-point-min-lit-type nil  c-state-point-min-lit-start nil  c-state-min-scan-pos 1  c-state-old-cpp-beg (copy-marker 1769)  c-state-old-cpp-end (copy-marker 2432)  c-parse-state-point 2244)
c-parse-state inconsistency at 2524: using cache: (2509 (1208 . 1674)), from scratch: (2509 (1863 . 2060)).  POINT-MIN: 1
Old state:
(setq c-state-cache '(2462 (1208 . 1674))  c-state-cache-good-pos 2433  c-state-nonlit-pos-cache nil  c-state-nonlit-pos-cache-limit 1  c-state-brace-pair-desert '(1 . 1208)  c-state-point-min 1  c-state-point-min-lit-type nil  c-state-point-min-lit-start nil  c-state-min-scan-pos 1  c-state-old-cpp-beg (copy-marker 2434)  c-state-old-cpp-end (copy-marker 2482)  c-parse-state-point 2465)
c-parse-state inconsistency at 2600: using cache: (2592 (1208 . 1674)), from scratch: (2592 (1863 . 2060)).  POINT-MIN: 1
Old state:
(setq c-state-cache '(2509 (1208 . 1674))  c-state-cache-good-pos 2483  c-state-nonlit-pos-cache nil  c-state-nonlit-pos-cache-limit 1  c-state-brace-pair-desert '(1 . 1208)  c-state-point-min 1  c-state-point-min-lit-type nil  c-state-point-min-lit-start nil  c-state-min-scan-pos 1  c-state-old-cpp-beg (copy-marker 2483)  c-state-old-cpp-end (copy-marker 2541)  c-parse-state-point 2524)
c-parse-state inconsistency at 2610: using cache: (2592 (1208 . 1674)), from scratch: (2592 (1863 . 2060)).  POINT-MIN: 1
Old state:
(setq c-state-cache '(2592 (1208 . 1674))  c-state-cache-good-pos 2566  c-state-nonlit-pos-cache nil  c-state-nonlit-pos-cache-limit 1  c-state-brace-pair-desert '(1 . 1208)  c-state-point-min 1  c-state-point-min-lit-type nil  c-state-point-min-lit-start nil  c-state-min-scan-pos 1  c-state-old-cpp-beg (copy-marker 2543)  c-state-old-cpp-end (copy-marker 2634)  c-parse-state-point 2600)
Line 32