--- Begin Message ---
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Subject: |
CC Mode 5.34.2 (C/*l); Incorrect result of successive (c-literal-limits) calls |
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Date: |
Tue, 19 Jan 2021 18:23:11 +0000 |
Package: cc-mode
Given the following program (test.c):
---
const char *x = "ab";
const char *y = "cd";
---
Place point between "a" and "b" in the first string literal, and evaluate
(c-literal-limits). (The result will be (17 . 21), which is correct.)
Now, place point between "c" and "d" in the second string literal, and
evaluate (c-literal-limits) again. The result will be (39 . 21), which is
not only incorrect, but malformed (the end is before the start).
This seems to be a regression, occurring between Emacs 26.3 and 27.1.
The fallout is a broken test in d-mode, which is built on cc-mode.
Emacs : GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo
version 1.17.4, Xaw3d scroll bars)
of 2020-12-06
Package: CC Mode 5.34.2 (C/*l)
Buffer Style: java
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 4
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 '((brace-list-open) (brace-entry-open) (statement-cont)
(substatement-open after) (block-close . c-snug-do-while) (extern-lang-open
after) (namespace-open after) (module-open after) (composition-open after)
(inexpr-class-open after)
(inexpr-class-close before) (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 nil
c-label-minimum-indentation 1
c-offsets-alist '((label . 0)
(access-label . -)
(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)
(case-label . 0)
(substatement . +)
(statement-case-intro . +)
(statement . 0)
(brace-entry-open . 0)
(brace-list-entry . 0)
(brace-list-close . 0)
(brace-list-open . 0)
(block-close . 0)
(block-open . 0)
(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)
(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)
(func-decl-cont . c-lineup-java-throws)
(inher-cont . c-lineup-java-inher)
(access-label . 0)
(brace-list-intro first c-lineup-2nd-brace-entry-in-arglist
c-lineup-class-decl-init-+ +)
(arglist-close . c-lineup-arglist)
(arglist-intro . c-lineup-arglist-intro-after-paren)
(statement-cont . +)
(statement-case-open . +)
(label . +)
(substatement-label . +)
(substatement-open . +)
(knr-argdecl-intro . 5)
(statement-block-intro . +)
(topmost-intro-cont . +)
(inline-open . 0)
)
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
c-delete-function 'delete-char
c-electric-pound-behavior nil
c-default-style '((java-mode . "java") (awk-mode . "awk") (other . "java"))
c-enable-xemacs-performance-kludge-p nil
c-old-style-variable-behavior nil
defun-prompt-regexp nil
tab-width 4
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 "[ ]*\\(//+\\|\\**\\)[ ]*\\([
]*\\([-–!|#%;>*·•‣⁃◦]+[ ]*\\)*\\)"
)
--- End Message ---
--- Begin Message ---
|
Subject: |
Re: bug#45988: CC Mode 5.34.2 (C/*l); Incorrect result of successive (c-literal-limits) calls |
|
Date: |
Sun, 31 Jan 2021 12:02:16 +0000 |
Hello, Vladimir.
On Wed, Jan 27, 2021 at 08:44:45 +0000, Vladimir Panteleev wrote:
> Hi Alan,
> I can confirm that the bug is indeed fixed on the master branch, and
> the d-mode test I mentioned now passes again.
Many thanks for the confirmation. I am closing the bug with this
message.
> Thanks!
--
Alan Mackenzie (Nuremberg, Germany).
--- End Message ---