Package: emacs;
Reported by: David Reitter <reitter <at> cmu.edu>
Date: Fri, 30 Apr 2010 23:09:01 UTC
Severity: normal
Tags: notabug
Found in version 23.1.96
Done: Lars Magne Ingebrigtsen <larsi <at> gnus.org>
Bug is archived. No further changes may be made.
Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: David Reitter <reitter <at> cmu.edu> To: Bug-Gnu-Emacs <bug-gnu-emacs <at> gnu.org> Subject: 23.1.96; sxhash, big uints and overflow-error in custom-file Date: Fri, 30 Apr 2010 19:02:53 -0400
Not sure if this is an error of Emacs, or if the fault is mine: - `sxhash' of some object produced a 32-bit unsigned integer, which was represented just fine in Lisp. - I stored it in a customization variable, which was subsequently saved to my custom-file. - When reading back the file, I got an overflow error, as in (read-from-string "2475893479") --> overflow error Due to the nature of hashes, it appears unreasonable hard for me to make a test case. But looking at the code, sxhash is designed to produce an unsigned int and make a (signed?) Lisp integer from it. INTMASK is 0xffffffff at least on my system. Artihmetic operations, OTOH convert big ints to floats in arith_driver(): (let ((bigint (+ 1475893479 1000000000))) (floatp bigint)) (Would sxhash in that case produce a negative value if its result is printed? I don't know. Somewhere along the way to `custom-save-variables', some info about the meaning of bit #31 gets lost, and Emacs produces string representation that can't be read.) In GNU Emacs 23.1.96.1 (i386-apple-darwin9.8.0, NS apple-appkit-949.54) of 2010-04-30 on braeburn.aquamacs.org - Aquamacs Distribution 2.0preview6 Windowing system distributor `Apple', version 10.3.1038 configured using `configure '--with-ns' '--without-x' 'CFLAGS=-arch i386 -arch ppc' 'LDFLAGS=-arch i386 -arch ppc'' 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: Text Minor modes in effect: which-function-mode: t savehist-mode: t smart-frame-positioning-mode: t aquamacs-autoface-mode: t recentf-mode: t osx-key-mode: t tabbar-mwheel-mode: t tabbar-mode: t show-paren-mode: t delete-selection-mode: t pc-selection-mode: t cua-mode: t tooltip-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-encryption-mode: t auto-compression-mode: t smart-spacing-mode: t column-number-mode: t line-number-mode: t visual-line-mode: t transient-mark-mode: t Recent input: E G A T I V E SPC V B A L U <backspace> <backspace> <backspace> <backspace> A L U E ? <up> <return> <down-mouse-1> <mouse-movement> <mouse-1> <return> ⇧D O E SPC S <backspace> <backspace> S SPC T H E R SPC ` P 0 R I N <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> SPC <backspace> <backspace> <backspace> <backspace> <switch-frame> ^H V ^G ^H F C U S T O M I <backspace> - S A V E - V <tab> <return> <help-echo> <help-echo> <down-mouse-1> <mouse-2> <help-echo> <help-echo> <wheel-down> <double-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <wheel-down> <double-wheel-down> <triple-wheel-down> <triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <wheel-down> <double-wheel-down> <triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down> <triple-wheel-down> <triple-wheel-down> <wheel-down> <double-wheel-down> <down-mouse-1> <mouse-1> <double-down-mouse-1> <double-mouse-1> ⌘C <switch-frame> <down-mouse-1> <mouse-movement> <mouse-movement> <mouse-movement> <mouse-movement> <drag-mouse-1> ⇧S O M E W H E R E SPC A L O N M G <backspace> <backspace> G SPC T H E SPC W A Y SPC T O SPC ` ⌘V ' SPC S <backspace> <backspace> M <backspace> , SPC S O M E T <backspace> <backspace> <backspace> <backspace> <backspace> T H I S SPC G E T S SPC L O S T SPC <backspace> , SPC A N D SPC I T SPC P R O D U C E S SPC A SPC C U S T O <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> S T R I N G SPC R E P R E S E N T A T I O N SPC T H A T SPC C A N ' T SPC B E SPC R E A D SPC B <backspace> <backspace> . <return> <return> <ns-application-activated> ⌘A ⌘C <switch-frame> <ns-application-activated> <switch-frame> <menu-bar> <help-menu> <bug-diagnosis> <send-emacs-bug-report> Recent messages: Making completion list... Type "q" to quit. if: Search failed: "arith_d" Mark set Undo... Undo! Mark set Quit uncompressing cus-edit.el.gz...done Unable to load color "dark cyan" Load-path shadows: /Users/dr/Library/Preferences/Aquamacs Emacs/Recent Files hides /Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/Recent Files /Users/dr/Library/Preferences/Aquamacs Emacs/Preferences hides /Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/Preferences /Users/dr/Library/Preferences/Aquamacs Emacs/places hides /Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/places /Users/dr/Library/Preferences/Aquamacs Emacs/minibuffer-history hides /Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/minibuffer-history /Users/dr/Library/Preferences/Aquamacs Emacs/frame-positions hides /Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/frame-positions /Users/dr/Library/Preferences/Aquamacs Emacs/customizations hides /Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/customizations /Users/dr/Library/Application Support/Aquamacs Emacs/JDEE/site-start hides /Library/Application Support/Aquamacs Emacs/SLIME/site-start /Users/dr/Library/Application Support/Aquamacs Emacs/JDEE/site-start hides /Users/dr/Downloads/Aquamacs 2.app/Contents/Resources/lisp/aquamacs/site-start Features: (shadow sort mail-extr message ecomplete rfc822 mml mml-sec password-cache mm-decode mm-bodies mm-encode mailcap mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader gnus-util netrc mm-util mail-prsvr gmm-utils mailheader canlock sha1 hex-util hashcash mail-utils emacsbug jka-compr multi-isearch vc-git cc-mode cc-fonts cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs find-func pp which-func imenu slime-autoloads load-emacs-plugins aquamacs-mode-defaults auctex-config server tex-site smart-dnd aquamacs-aux savehist mouse-sel one-buffer-one-frame smart-frame-positioning drews_init color-theme-autoloads saveplace visual-line aquamacs-bug aquamacs-autoface-mode aquamacs-editing sendmail recentf tree-widget cus-edit osxkeys emulate-mac-keyboard-mode frame-cmds strings misc-fns thingatpt+ thingatpt frame-fns avoid aquamacs-mac-fontsets fit-frame aquamacs-frame-setup aquamacs-tabbar tabbar-window cl cl-19 tabbar easy-mmode cus-start cus-load load-emacs-pre-plugins aquamacs-site-start cocoa-compatibility filladapt aquamacs-redo check-for-updates aquamacs-menu osx_defaults aquamacs-tool-bar aquamacs mac-extra-functions aquamacs-tools aquamacs-macros parse-time timezone time-date paren delsel pc-select cua-base wid-edit regexp-opt advice advice-preload byte-opt bytecomp byte-compile debug help-fns help-mode view image-file disp-table tooltip ediff-hook vc-hooks lisp-float-type mwheel ns-win easymenu tool-bar dnd fontset image fringe lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar mldrag mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button minibuffer faces cus-face files text-properties overlay md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process ns multi-tty emacs) Command line: (/Users/dr/Downloads/Aquamacs 2.app/Contents/MacOS/Aquamacs) PATH: /opt/local/bin:/opt/local/sbin:/opt/local/bin:/opt/local/sbin:/opt/local/bin:/opt/local/sbin:/Library/Frameworks/Python.framework/Versions/Current/bin:/opt/local/lib/postgresql82/bin:/opt/local/bin:/opt/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin:/usr/texbin:/usr/X11/bin:/Users/dr/Applications:/Users/dr/Applications/bin:/Users/dr/Projects/openccg/bin:/usr/texbin/powerpc-apple-darwin-current:/usr/local/git/bin:/Developer/Platforms/iPhoneFOSS.platform/Developer/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/texbin:/usr/local/texlive/2009/bin exec-path: (/opt/local/bin /opt/local/sbin /opt/local/bin /opt/local/sbin /opt/local/bin /opt/local/sbin /Library/Frameworks/Python.framework/Versions/Current/bin /opt/local/lib/postgresql82/bin /opt/local/bin /opt/local/sbin /usr/bin /bin /usr/sbin /sbin /usr/local/bin /usr/local/git/bin /usr/texbin /usr/X11/bin /Users/dr/Applications /Users/dr/Applications/bin /Users/dr/Projects/openccg/bin /usr/texbin/powerpc-apple-darwin-current /usr/local/git/bin /Developer/Platforms/iPhoneFOSS.platform/Developer/bin /usr/bin /bin /usr/sbin /sbin /Users/dr/Downloads/Aquamacs 2.app/Contents/MacOS/bin /usr/local/texlive/2009/bin)
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