GNU bug report logs - #28309
gud mode fails with docker gdb

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Package: emacs;

Reported by: Robert Mecklenburg <rmecklenburg <at> control4.com>

Date: Thu, 31 Aug 2017 18:58:01 UTC

Severity: normal

Tags: moreinfo

Merged with 40279

Found in version 26.3

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#28309; Package emacs. (Thu, 31 Aug 2017 18:58:02 GMT) Full text and rfc822 format available.

Acknowledgement sent to Robert Mecklenburg <rmecklenburg <at> control4.com>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Thu, 31 Aug 2017 18:58:02 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Robert Mecklenburg <rmecklenburg <at> control4.com>
To: bug-gnu-emacs <at> gnu.org
Cc: Robert Mecklenburg <rmecklenburg <at> control4.com>
Subject: gud mode fails with docker gdb
Date: Thu, 31 Aug 2017 12:54:48 -0600
I'm using "GNU Emacs 25.1.1 (x86_64-pc-linux-gnu, GTK+ Version

3.22.11) of 2017-03-29, modified by Debian" on Ubuntu zesty on an

Intel Xeon.



I have a docker image (with Ubuntu xenial), "Docker version

17.06.1-ce, build 874a737", in which I'm trying to run gdb.  The emacs

is running outside the docker while gdb is running inside the docker.

The docker container is called "xenial-3.0.0".  I start gdb with M-x

gdb and a command line of:



    docker exec -it xenial-3.0.0 gdb -i=mi -cd=$PWD agentgtest



The bug is that I'm getting the message:



    Error: you did not specify -i=mi on GDB's command line!



I've set (setq gdbmi-debug-mode t) and *Messages* contains:



    ...

    gdb-input: 1-inferior-tty-set /dev/pts/6

    gdb-input: 2-gdb-set height 0

    gdb-input: 3-gdb-set non-stop 1

    gdb-input: 4-enable-pretty-printing

    gdb-input: 5-file-list-exec-source-files

    gdb-input: 6-file-list-exec-source-file

    gdb-input: 7-gdb-show prompt

    gdb-input: 8-stack-info-frame

    gdb-input: 9-thread-info

    gdb-input: 10-break-list

    gdb-input: 11-thread-info

    gdb-input: 12-break-list

    Error: you did not specify -i=mi on GDB’s command line!

    C-h C-g is undefined

    Updating buffer list...done

    Commands: m, u, t, RET, g, k, S, D, Q; q to quit; h for help

    ...



The *gud-exec* buffer contains:



    Current directory is /home/mecklen/c4software/3.0.0/control4/zwave
/agent/gtest/

    Error: you did not specify -i=mi on GDB's command line!

    1-inferior-tty-set /dev/pts/6

    2-gdb-set height 0

    3-gdb-set non-stop 1

    4-enable-pretty-printing

    5-file-list-exec-source-files

    6-file-list-exec-source-file

    7-gdb-show prompt

    8-stack-info-frame

    9-thread-info

    10-break-list

    11-thread-info

    12-break-list

    =thread-group-added,id="i1"

    ~"GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1\n"

    ~"Copyright (C) 2016 Free Software Foundation, Inc.\n"

    ~"License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licen
ses/gpl.html>\nThis is free software: you are free to change and redis
tribute it.\nThere is NO WARRANTY, to the extent permitted by law.  Ty
pe \"show copying\"\nand \"show warranty\" for details.\n"

    ~"This GDB was configured as \"x86_64-linux-gnu\".\nType \"show co
nfiguration\" for configuration details."

    ~"\nFor bug reporting instructions, please see:\n"

    ~"<http://www.gnu.org/software/gdb/bugs/>.\n"

    ~"Find the GDB manual and other documentation resources online at:
\n<http://www.gnu.org/software/gdb/documentation/>.\n"

    ~"For help, type \"help\".\n"

    ~"Type \"apropos word\" to search for commands related to \"word\"
...\n"

    =cmd-param-changed,param="demangle-style",value="gnu-v3"

    =cmd-param-changed,param="print array",value="on"

    =cmd-param-changed,param="print elements",value="20000"

    =cmd-param-changed,param="print object",value="on"

    =cmd-param-changed,param="print pretty",value="on"

    =cmd-param-changed,param="print static-members",value="off"

    =cmd-param-changed,param="print vtbl",value="on"

    =cmd-param-changed,param="mi-async",value="on"

    =cmd-param-changed,param="pagination",value="off"

    ~"TERM = xterm-256color\n"

    &"$PWD: No such file or directory.\n"

    &"agentgtest: No such file or directory.\n"

    (gdb) 

    1^done

    (gdb) 

    2^done

    (gdb) 

    3^done

    (gdb) 

    4^done

    (gdb) 

    5^done,files=[]

    (gdb) 

    6^error,msg="No symbol table is loaded.  Use the \"file\" comman
d."

    (gdb) 

    7^done,value="(gdb) "

    (gdb) 

    8^error,msg="No registers."

    (gdb) 

    9^done,threads=[]

    (gdb) 

    10^done,BreakpointTable={nr_rows="0",nr_cols="6",hdr=[{wid
th="7",alignment="-1",col_name="number",colhdr="Num"},{width
="14",alignment="-1",col_name="type",colhdr="Type"},{width="
4",alignment="-1",col_name="disp",colhdr="Disp"},{width="3",al
ignment="-1",col_name="enabled",colhdr="Enb"},{width="10",alig
nment="-1",col_name="addr",colhdr="Address"},{width="40",align
ment="2",col_name="what",colhdr="What"}],body=[]}

    (gdb) 

    11^done,threads=[]

    (gdb) 

    12^done,BreakpointTable={nr_rows="0",nr_cols="6",hdr=[{wid
th="7",alignment="-1",col_name="number",colhdr="Num"},{width
="14",alignment="-1",col_name="type",colhdr="Type"},{width="
4",alignment="-1",col_name="disp",colhdr="Disp"},{width="3",al
ignment="-1",col_name="enabled",colhdr="Enb"},{width="10",alig
nment="-1",col_name="addr",colhdr="Address"},{width="40",align
ment="2",col_name="what",colhdr="What"}],body=[]}

    (gdb)



The original docker image was run with:



    docker run --interactive --tty \

	--volume /home/mecklen:/home/mecklen \

	--hostname xenial-3.0.0 \

	--name xenial-3.0.0 \

	--security-opt seccomp:unconfined \

	xenial-3.0.0-builder /bin/bash



It seems as if the initial sequence of mi control commands is somehow

being echoed back to emacs and processed as input.  That makes no

sense to me, any suggestions are welcome.



BTW, I'm familiar with accessing a docker from TRAMP and using M-x gdb

that way.  I works a little better but has a different set of issues

and I'd prefer to use this approach, if possible.



Thanks in advance,

-- 

Robert Mecklenburg

rmecklenburg <at> control4.com





Forcibly Merged 28309 40279. Request was from Lars Ingebrigtsen <larsi <at> gnus.org> to control <at> debbugs.gnu.org. (Mon, 26 Oct 2020 20:36:02 GMT) Full text and rfc822 format available.

bug closed, send any further explanations to 40279 <at> debbugs.gnu.org and Roland Coeurjoly <rolandcoeurjoly <at> gmail.com> Request was from Lars Ingebrigtsen <larsi <at> gnus.org> to control <at> debbugs.gnu.org. (Fri, 30 Oct 2020 12:20:02 GMT) Full text and rfc822 format available.

bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Wed, 02 Dec 2020 12:24:05 GMT) Full text and rfc822 format available.

This bug report was last modified 3 years and 118 days ago.

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