Package: cc-mode;
Reported by: Michael Welsh Duggan <md5i <at> md5i.com>
Date: Fri, 5 Mar 2021 21:16:02 UTC
Severity: normal
Done: Alan Mackenzie <acm <at> muc.de>
Bug is archived. No further changes may be made.
Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: Michael Welsh Duggan <md5i <at> md5i.com> To: submit <at> debbugs.gnu.org Subject: CC Mode 5.35.1 (C++/l); c-state-cache inconsistency Date: Fri, 05 Mar 2021 16:15:20 -0500
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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
[test.h (text/x-chdr, attachment)]
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Emacs : GNU Emacs 28.0.50 (build 2, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0) of 2021-03-05 Package: CC Mode 5.35.1 (C++//l) Buffer Style: gnu c-emacs-features: (pps-extended-state col-0-paren posix-char-classes gen-string-delim gen-comment-delim syntax-properties 1-bit) current state: ============== (setq c-basic-offset 2 c-comment-only-line-offset '(0 . 0) c-indent-comment-alist '((anchored-comment column . 0) (end-block space . 1) (cpp-end-block space . 2)) c-indent-comments-syntactically-p nil c-block-comment-prefix "" c-comment-prefix-regexp '((pike-mode . "//+!?\\|\\**") (awk-mode . "#+") (other . "//+\\|\\**")) c-doc-comment-style '((java-mode . javadoc) (pike-mode . autodoc) (c-mode . gtkdoc) (c++-mode . gtkdoc)) c-cleanup-list '(scope-operator) c-hanging-braces-alist '((substatement-open before after) (arglist-cont-nonempty)) c-hanging-colons-alist nil c-hanging-semi&comma-criteria '(c-semi&comma-inside-parenlist) c-backslash-column 48 c-backslash-max-column 72 c-special-indent-hook '(t c-gnu-impose-minimum) c-label-minimum-indentation 1 c-offsets-alist '((inexpr-class . +) (inexpr-statement . +) (lambda-intro-cont . +) (inlambda . 0) (template-args-cont c-lineup-template-args +) (incomposition . +) (inmodule . +) (innamespace . +) (inextern-lang . +) (composition-close . 0) (module-close . 0) (namespace-close . 0) (extern-lang-close . 0) (composition-open . 0) (module-open . 0) (namespace-open . 0) (extern-lang-open . 0) (objc-method-call-cont c-lineup-ObjC-method-call-colons c-lineup-ObjC-method-call + ) (objc-method-args-cont . c-lineup-ObjC-method-args) (objc-method-intro . [0]) (friend . 0) (cpp-define-intro c-lineup-cpp-define +) (cpp-macro-cont . +) (cpp-macro . [0]) (inclass . +) (stream-op . c-lineup-streamop) (arglist-cont-nonempty c-lineup-gcc-asm-reg c-lineup-arglist ) (arglist-cont c-lineup-gcc-asm-reg 0) (comment-intro c-lineup-knr-region-comment c-lineup-comment ) (catch-clause . 0) (else-clause . 0) (do-while-closure . 0) (access-label . -) (case-label . 0) (substatement . +) (statement-case-intro . +) (statement . 0) (brace-entry-open . 0) (brace-list-entry . 0) (brace-list-close . 0) (block-close . 0) (block-open . 0) (inher-cont . c-lineup-multi-inher) (inher-intro . +) (member-init-cont . c-lineup-multi-inher) (member-init-intro . +) (annotation-var-cont . +) (annotation-top-cont . 0) (topmost-intro . 0) (knr-argdecl . 0) (func-decl-cont . +) (inline-close . 0) (class-close . 0) (class-open . 0) (defun-block-intro . +) (defun-close . 0) (defun-open . 0) (c . c-lineup-C-comments) (string . c-lineup-dont-change) (topmost-intro-cont first c-lineup-topmost-intro-cont c-lineup-gnu-DEFUN-intro-cont ) (brace-list-intro first c-lineup-2nd-brace-entry-in-arglist c-lineup-class-decl-init-+ + ) (brace-list-open . +) (inline-open . 0) (arglist-close . c-lineup-arglist) (arglist-intro . c-lineup-arglist-intro-after-paren) (statement-cont . +) (statement-case-open . +) (label . 0) (substatement-label . 0) (substatement-open . +) (knr-argdecl-intro . 5) (statement-block-intro . +) ) c-buffer-is-cc-mode 'c++-mode c-tab-always-indent t c-syntactic-indentation t c-syntactic-indentation-in-macros t c-ignore-auto-fill '(string cpp code) c-auto-align-backslashes t c-backspace-function 'backward-delete-char-untabify c-delete-function 'delete-char c-electric-pound-behavior nil c-default-style '((java-mode . "java") (awk-mode . "awk") (other . "gnu")) c-enable-xemacs-performance-kludge-p nil c-old-style-variable-behavior nil defun-prompt-regexp nil tab-width 8 comment-column 32 parse-sexp-ignore-comments t parse-sexp-lookup-properties t auto-fill-function nil comment-multi-line t comment-start-skip "\\(?://+\\|/\\*+\\)\\s *" fill-prefix nil fill-column 70 paragraph-start "[ ]*\\(//+\\|\\**\\)[ ]*$\\|^\f" adaptive-fill-mode t adaptive-fill-regexp "[ ]*\\(//+\\|\\**\\)[ ]*\\([ ]*\\([-–!|#%;>*·•‣⁃◦]+[ ]*\\)*\\)" ) -- Michael Welsh Duggan (md5i <at> md5i.com)
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