Package: emacs;
Reported by: Michael Welsh Duggan <md5i <at> md5i.com>
Date: Mon, 30 Nov 2009 04:35:03 UTC
Severity: normal
Done: nickrob <at> snap.net.nz (Nick Roberts)
Bug is archived. No further changes may be made.
View this message in rfc822 format
From: Michael Welsh Duggan <md5i <at> md5i.com> To: emacs-pretest-bug <at> gnu.org Subject: bug#5077: 23.1.50; gdb-mi prompt weirdness Date: Sun, 29 Nov 2009 23:25:01 -0500
[Message part 1 (text/plain, inline)]
Please describe exactly what actions triggered the bug and the precise symptoms of the bug. If you can, give a recipe starting from `emacs -Q': Compile the following program using: g++ -g -o foo foo.cpp
[foo.cpp (text/x-c++src, inline)]
class A {
protected:
int c(void) const { return 1;}
int d(void) const { return 2;}
};
class B : private A {
public:
using A::c;
};
int main()
{
B b;
int x;
x = b.c();
// x = b.d();
// A &a = b;
// x = a.d();
return 0;
}
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In an emacs, start gdb using something similar to: M-x gdb RET gdb -i=mi bar RET Then use the following gdb session: start b run In my output, I end up in a state without a (gdb) prompt. Here is an example of my output:
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Current directory is /usr/local/home/md5i/ GNU gdb (GDB) 7.0-debian Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i486-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /usr/local/home/md5i/bar...done. (gdb) start Temporary breakpoint 1 at 0x80483a5: file bar.c, line 2. Starting program: /usr/local/home/md5i/bar (gdb) b Breakpoint 2 at 0x80483a5: file bar.c, line 2. (gdb) run Starting program: /usr/local/home/md5i/bar
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At this point I can type in gdb commands, but there is no visible prompt. I have been able to trigger this occurance in a number of debugging situations, and it can often be confusing, as no prompt to me generally means that the program is still running. In GNU Emacs 23.1.50.1 (i686-pc-linux-gnu, GTK+ Version 2.18.3) of 2009-11-27 on maru Windowing system distributor `The X.Org Foundation', version 11.0.10605000 configured using `configure '--without-toolkit-scroll-bars'' 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.utf8 value of $XMODIFIERS: nil locale-coding-system: utf-8-unix default enable-multibyte-characters: t Major mode: Summary Minor modes in effect: display-time-mode: t diff-auto-refine-mode: t shell-dirtrack-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 global-auto-composition-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t Recent input: C-n C-n C-n C-p < # / p a r t > M-v C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n <return> H e r e SPC i s SPC t h e SPC g d b - d e b u g - l o g SPC f o r SPC t h i s SPC s e s s i o n : <return> <return> < # p a r t <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> C-y <return> < # / p a r t > M-v M-v M-v M-v M-v M-v M-v M-v C-p C-p C-p C-p C-p C-p C-p C-p C-p C-a C-n C-SPC C-n M-w C-v C-v M-v C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-n C-n C-n C-n C-n C-n C-n C-n C-y M-v C-v C-v C-v C-v M-v M-v M-v C-v C-v C-v C-v C-v C-v C-v C-v M-v M-v C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-SPC C-n C-n C-n C-n C-n C-n C-n C-n C-w C-v C-v C-v M-v M-v M-v M-v M-v M-v M-v M-v <escape> < C-n C-n C-n C-n C-n C-n C-n C-n C-n <return> C-_ C-c C-c <help-echo> M-x r e p o r t - e m <tab> <retur n> Recent messages: Reading active file from localimap via nnimap... nnimap: Checking mailboxes...done Reading active file from archive via nnfolder...done Checking new news...done Undo! Sending... Sending via mail... nnimap: Updating info for nnimap+localimap:archive.mail...done Sending...done Deleting article /home/md5i/News/drafts/drafts/3 in drafts... Load-path shadows: /usr/local/share/emacs/site-lisp/lilypond-words hides /usr/share/emacs/site-lisp/lilypond-words /usr/local/share/emacs/site-lisp/lilypond-indent hides /usr/share/emacs/site-lisp/lilypond-indent /usr/local/share/emacs/site-lisp/lilypond-mode hides /usr/share/emacs/site-lisp/lilypond-mode /home/md5i/src/elisp/psvn hides /usr/share/emacs/site-lisp/psvn /usr/local/share/emacs/site-lisp/lilypond-song hides /usr/share/emacs/site-lisp/lilypond-song /usr/local/share/emacs/site-lisp/lilypond-what-beat hides /usr/share/emacs/site-lisp/lilypond-what-beat /usr/local/share/emacs/site-lisp/lilypond-font-lock hides /usr/share/emacs/site-lisp/lilypond-font-lock /usr/local/share/emacs/site-lisp/lilypond-init hides /usr/share/emacs/site-lisp/lilypond-init Features: (shadow ispell emacsbug newcomment speedbar sb-image ezimage dframe gdb-mi warnings bindat json gud dabbrev jka-compr find-func grep lilypond-mode scheme etags vc-git cc-mode cc-fonts cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs multi-isearch mule-util vc-dispatcher vc-svn gnus-cite ansi-color flow-fill gnus-async gnus-bcklg parse-time sort byte-opt bytecomp byte-compile gnus-ml disp-table gnus-topic nnfolder utf-7 utf7 rfc2104 nnimap nndraft nnmh bbdb-gnus bbdb-snarf mail-extr bbdb-com nnml gnus-agent gnus-srvr gnus-score score-mode nnvirtual gnus-msg gnus-art mm-uu mml2015 mm-view smime dig gnus-cache edmacro kmacro gnus-demon nntp nnir gnus-sum gnus-group gnus-undo nnmail mail-source nnoo gnus-start gnus-spec gnus-int gnus-range gnus-win gnus gnus-ems server uptimes pp uniquify descr-text help-mode view tramp-imap epa epg epg-config imap-hash imap assoc tramp-gw tramp-fish tramp-smb tramp-cache tramp-ftp tramp-cmds tramp auth-source format-spec tramp-compat trampver time rng-loc rng-uri rng-parse rng-match rng-dt rng-util rng-pttrn nxml-parse nxml-ns nxml-enc xmltok nxml-util sgml-mode psvn log-edit pcvs-util add-log diff-mode easy-mmode inf-caml camldebug thingatpt derived shell caml-types caml-emacs caml-font caml advice help-fns advice-preload compile imenu message sendmail ecomplete rfc822 mml easymenu mml-sec password-cache mm-decode mm-bodies mm-encode mailcap mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader gnus-util netrc time-date mm-util mail-prsvr gmm-utils wid-edit mailheader canlock sha1 hex-util hashcash mail-utils generic-x debian-el debian-el-loaddefs dired-x dired-aux dired bbdb-autoloads bbdb timezone ange-ftp regexp-opt comint ring cl cl-19 tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd font-setting 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 text-properties overlay md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process dbusbind system-font-setting font-render-setting gtk x-toolkit x multi-tty emacs) -- Michael Welsh Duggan (md5i <at> md5i.com)
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