GNU bug report logs - #4251
23.1.50; Error byte-compiling big conditional

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: aemoncannon <at> gmail.com
Subject: bug#4251: closed (Re: bug#4251: Another failure case..)
Date: Sat, 17 Sep 2011 09:40:03 +0000

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Your bug report

#4251: 23.1.50; Error byte-compiling big conditional

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 4251 <at> debbugs.gnu.org.

-- 
4251: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=4251
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Andreas Schwab <schwab <at> linux-m68k.org>
To: Lars Magne Ingebrigtsen <larsi <at> gnus.org>
Cc: aemoncannon <at> gmail.com, 4251-done <at> debbugs.gnu.org
Subject: Re: bug#4251: Another failure case..
Date: Sat, 17 Sep 2011 11:34:51 +0200

Overflow check fixed.

Andreas.

-- 
Andreas Schwab, schwab <at> linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

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From: Aemon Cannon <aemoncannon <at> gmail.com>
To: emacs-pretest-bug <at> gnu.org
Subject: 23.1.50; Error byte-compiling big conditional
Date: Mon, 24 Aug 2009 20:35:13 -0400

Received the following error:
bytecomp-bug.el:9:4:Error: Args out of range: 312, 0, 255

When byte-compiling a file with the following elisp:

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(defmacro many-forms ()
  (let ((body '()))
    (dotimes (i 20000)
      (setq body (cons '(message "more") body)))
    `(progn ,@body)))

(if (eq 1 a)
    (many-forms)
  (message "else"))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Suspect a byte overflow at line 856 in bytecomp.el
The argument of a goto is bigger than 16 bits.



In GNU Emacs 23.1.50.1 (i486-pc-linux-gnu, GTK+ Version 2.16.1)
 of 2009-07-31 on lansones, modified by Debian
 (emacs-snapshot package, version 1:20090730-1~jaunty1)
Windowing system distributor `The X.Org Foundation', version 11.0.10600000
configured using `configure  '--build' 'i486-linux-gnu' '--host'
'i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib'
'--libexecdir=/usr/lib' '--localstatedir=/var'
'--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes'
'--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/23.1.50/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.1.50/site-lisp:/usr/share/emacs/site-lisp'
'--with-x=yes' '--with-x-toolkit=gtk' 'build_alias=i486-linux-gnu'
'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN
-DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'LDFLAGS=-g -Wl,--as-needed'
'CPPFLAGS=''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  shell-dirtrack-mode: t
  diff-auto-refine-mode: t
  show-paren-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

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