Package: cc-mode;
Reported by: Mohammed Sadiq <sadiq <at> sadiqpk.org>
Date: Sat, 25 Feb 2017 10:58:01 UTC
Severity: normal
Done: Alan Mackenzie <acm <at> muc.de>
Bug is archived. No further changes may be made.
View this message in rfc822 format
From: Mohammed Sadiq <sadiq <at> sadiqpk.org> To: 25869 <at> debbugs.gnu.org Subject: bug#25869: CC Mode 5.32.99 (C/l); Sometimes Emacs use 100% CPU on comment-dwim for a long time Date: Sat, 25 Feb 2017 16:26:58 +0530
When writing code, I encountered a bug in comment-dwim, which takes 100%
CPU for a long time, and then failing to comment the line.
How to reproduce using the following code:
1. Mark some line in the first function.
Eg: g_type_ensure (CC_TYPE_INFO_OVERVIEW);
do C-a C-SPC C-e
2. Do comment-dwim
ie, M-;
The code that produced the issue is the following:
Note: if I remove the array at the bottom of code, M-; begins to work
fine. The code follows is an excerpt from gnome-control-center.
============ Code starts =================
static void
cc_info_panel_class_init (CcInfoPanelClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (CcInfoPanelPrivate));
object_class->dispose = cc_info_panel_dispose;
object_class->finalize = cc_info_panel_finalize;
g_type_ensure (CC_TYPE_INFO_OVERVIEW);
}
static void
info_panel_setup_default_app (CcInfoPanel *self,
DefaultAppData *data,
guint left_attach,
guint top_attach)
{
GtkWidget *button;
GtkWidget *grid;
GtkWidget *label;
grid = WID ("default_apps_grid");
button = gtk_app_chooser_button_new (data->content_type);
g_object_set_data (G_OBJECT (button), "cc-default-app-data", data);
gtk_app_chooser_button_set_show_default_item (GTK_APP_CHOOSER_BUTTON (button), TRUE);
gtk_grid_attach (GTK_GRID (grid), button, left_attach, top_attach,
1, 1);
g_signal_connect (G_OBJECT (button), "changed",
G_CALLBACK (default_app_changed), self);
gtk_widget_show (button);
label = WID(data->label);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), button);
}
static DefaultAppData preferred_app_infos[] = {
/* for web, we need to support text/html,
application/xhtml+xml and x-scheme-handler/https,
hence the "*" pattern
*/
{ "x-scheme-handler/http", "web-label", "*" },
{ "x-scheme-handler/mailto", "mail-label", NULL },
{ "text/calendar", "calendar-label", NULL },
{ "audio/x-vorbis+ogg", "music-label", "audio/*" },
{ "video/x-ogm+ogg", "video-label", "video/*" },
{ "image/jpeg", "photos-label", "image/*" }
};
============ Code Ends ===========
Thanks
Emacs : GNU Emacs 26.0.50.3 (x86_64-pc-linux-gnu, GTK+ Version 3.22.6)
of 2017-02-05
Package: CC Mode 5.32.99 (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-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 '(c-gnu-impose-minimum)
c-label-minimum-indentation 1
c-offsets-alist '((inexpr-class . +)
(inexpr-statement . +)
(lambda-intro-cont . +)
(inlambda . c-lineup-inexpr-block)
(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 . c-lineup-under-anchor)
(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 . c-lineup-arglist-intro-after-paren)
(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 "[ ]*\\(//+\\|\\**\\)[ ]*\\([ ]*\\([-–!|#%;>*·•‣⁃◦]+[ ]*\\)*\\)"
)
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