--- Begin Message ---
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Subject: |
25.1; byte-compile warning indicates wrong line |
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Date: |
Mon, 03 Oct 2016 10:18:25 +0900 |
Let the contents of the file "tmp.el" be:
(defun test (files)
(and t (string-match 1))
(and t (string-match 1 2)))
Then input M-x byte-compile-file RET tmp.el RET
*Compile-Log* buffer shows:
In test:
tmp.el:3:11:Warning: string-match called with 1 argument, but requires 2-3
The warning must indicate the line 2.
In GNU Emacs 25.1.1 (i686-w64-mingw32)
of 2016-09-18 built on LAPHROAIG
Windowing system distributor 'Microsoft Corp.', version 6.0.6002
Configured using:
'configure --host=i686-w64-mingw32 --without-dbus
--without-compress-install CFLAGS=-static'
Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB
TOOLKIT_SCROLL_BARS
Important settings:
value of $LANG: JPN
locale-coding-system: cp932
Major mode: Emacs-Lisp
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Recent messages:
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message dired format-spec rfc822 mml
mml-sec password-cache epg epg-config gnus-util mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mm-util help-fns mail-prsvr mail-utils advice
warnings byte-opt compile comint ansi-color ring bytecomp byte-compile
cl-extra help-mode easymenu cl-loaddefs pcase cl-lib cconv time-date
mule-util japan-util tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel dos-w32 ls-lisp disp-table w32-win w32-vars
term/common-win tool-bar dnd fontset image regexp-opt fringe
tabulated-list newcomment elisp-mode lisp-mode prog-mode register page
menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core frame cl-generic cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms
cp51932 hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese charscript case-table epa-hook jka-cmpr-hook help
simple abbrev minibuffer cl-preloaded nadvice loaddefs button faces
cus-face macroexp files text-properties overlay sha1 md5 base64 format
env code-pages mule custom widget hashtable-print-readable backquote
w32notify w32 multi-tty make-network-process emacs)
Memory information:
((conses 8 103501 6163)
(symbols 32 20830 0)
(miscs 32 72 238)
(strings 16 19286 4465)
(string-bytes 1 554956)
(vectors 8 14798)
(vector-slots 4 535204 5216)
(floats 8 173 246)
(intervals 28 315 13)
(buffers 520 22))
--- End Message ---
--- Begin Message ---
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Subject: |
Re: bug#22288: 25.0.50; Incorrect line and column number in byte-compilation warning |
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Date: |
Sat, 22 Jan 2022 18:16:58 +0000 |
Hello Everybody.
This bug has just been fixed in master by merging in branch
scratch/correct-warning-pos.
--
Alan Mackenzie (Nuremberg, Germany).
On Fri, Jan 01, 2016 at 10:54:24 -0500, Clément Pit--Claudel wrote:
> Hi all,
> The byte-compiler doesn't always report the right line and column numbers.
> For example for the following program in test.el:
> (defun test ()
> (let (a))
> a)
> Running M-x byte-compile-file RET test.el RET yields:
> > Compiling file /home/clement/test.el at Fri Jan 1 10:48:41 2016
> > In test:
> > test.el:2:9:Warning: reference to free variable ‘a’
> The correct warning would be
> > test.el:3:2:Warning: reference to free variable ‘a’
> Note that the following program gives the right error:
> (defun test ()
> (let (b))
> a)
> > test.el:3:3:Warning: reference to free variable ‘a’
> Although one might argue that it should be
> > test.el:3:2:Warning: reference to free variable ‘a’
> (that is, column 2, not 3) given that Emacs starts counting columns at 0.
> Cheers,
> Clément.
> In GNU Emacs 25.0.50.8 (x86_64-unknown-linux-gnu, GTK+ Version 3.10.8)
> of 2015-12-29 built on clem-w50-mint
> Repository revision: a21bb238ce7bcc9c13a9cf66db77918304daa2fc
> Windowing system distributor 'The X.Org Foundation', version 11.0.11501000
> System Description: Linux Mint 17.2 Rafaela
--- End Message ---