--- Begin Message ---
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Subject: |
CC Mode 5.35.1 (Profiler-Report); Objective C support extremely slow |
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Date: |
Sun, 28 Nov 2021 16:11:15 +0800 |
Package: cc-mode
Emacs : GNU Emacs 29.0.50 (build 358, x86_64-pc-linux-gnu, GTK+ Version
3.24.30, cairo version 1.17.4)
of 2021-11-28
Package: CC Mode 5.35.1 (Profiler-Report)
Buffer Style: nil
c-emacs-features: (pps-extended-state col-0-paren posix-char-classes
gen-string-delim gen-comment-delim syntax-properties 1-bit)
Open src/nsterm.m from Emacs master, and immediately go to line 603.
Once you try to move around after going to line 603, Emacs will lock up
and later become extremely slow.
current state:
==============
(setq
c-basic-offset 'set-from-style
c-comment-only-line-offset 'set-from-style
c-indent-comment-alist 'set-from-style
c-indent-comments-syntactically-p 'set-from-style
c-block-comment-prefix 'set-from-style
c-comment-prefix-regexp 'set-from-style
c-doc-comment-style 'set-from-style
c-cleanup-list 'set-from-style
c-hanging-braces-alist 'set-from-style
c-hanging-colons-alist 'set-from-style
c-hanging-semi&comma-criteria 'set-from-style
c-backslash-column 'set-from-style
c-backslash-max-column 'set-from-style
c-special-indent-hook nil
c-label-minimum-indentation 'set-from-style
c-offsets-alist nil
c-buffer-is-cc-mode nil
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 nil
parse-sexp-lookup-properties nil
auto-fill-function nil
comment-multi-line nil
comment-start-skip nil
fill-prefix nil
fill-column 70
paragraph-start "\f\\|[ ]*$"
adaptive-fill-mode t
adaptive-fill-regexp "[ ]*\\([-–!|#%;>*·•‣⁃◦]+[ ]*\\)*"
)
--- End Message ---
--- Begin Message ---
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Subject: |
Re: bug#52157: CC Mode 5.35.1 (Profiler-Report); Objective C support extremely slow |
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Date: |
Wed, 1 Dec 2021 15:49:20 +0000 |
Hello again, Po.
On Sun, Nov 28, 2021 at 16:11:15 +0800, Po Lu via CC-Mode-help wrote:
> Package: cc-mode
> Emacs : GNU Emacs 29.0.50 (build 358, x86_64-pc-linux-gnu, GTK+ Version
> 3.24.30, cairo version 1.17.4)
> of 2021-11-28
> Package: CC Mode 5.35.1 (Profiler-Report)
> Buffer Style: nil
> c-emacs-features: (pps-extended-state col-0-paren posix-char-classes
> gen-string-delim gen-comment-delim syntax-properties 1-bit)
> Open src/nsterm.m from Emacs master, and immediately go to line 603.
> Once you try to move around after going to line 603, Emacs will lock up
> and later become extremely slow.
I've committed a patch to the emacs-28 branch which I'm pretty sure has
fixed it.
The problem was in the code analysis, where a "struct foo {" wasn't
being properly recognised as a type. A fight ensued between two bits of
code, one of which marked it as a type, the other then unmarking it, in
a fairly tight loop.
Anyhow, I'm closing the bug with this post. If there're still problems
in the area, we can open it again.
[ .... ].
--
Alan Mackenzie (Nuremberg, Germany).
--- End Message ---