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bug#43664: 28.0.50; Crush of X after choosing F10 -> Tutorial


From: Jean Louis
Subject: bug#43664: 28.0.50; Crush of X after choosing F10 -> Tutorial
Date: Wed, 30 Sep 2020 18:04:16 +0300
User-agent: Mutt/1.14.0 (2020-05-02)

* Eli Zaretskii <eliz@gnu.org> [2020-09-30 17:58]:
> > Date: Wed, 30 Sep 2020 17:46:52 +0300
> > From: Jean Louis <bugs@gnu.support>
> > Cc: 43664@debbugs.gnu.org
> > 
> > #!/bin/bash
> > gdb -ex run emacs
> > 
> > But do you know how can I pass command line arguments like "$@"?
> 
> "gdb --help" to the rescue:
> 
>   gdb --args emacs $@

Thank you.

I was looking into manual, and did not find the option --args in the
manual so that is bug in the manual, at least on my side.



GDB(1) -- 2017-04-04 -- gdb-7.12.1 -- GNU Development Tools

NAME
        gdb - The GNU Debugger

SYNOPSIS
        gdb [-help] [-nh] [-nx] [-q] [-batch] [-cd=dir] [-f]
        [-b bps]
            [-tty=dev] [-s symfile] [-e prog] [-se prog] [-c core]
        [-p procID]
            [-x cmds] [-d dir] [prog|prog procID|prog core]

DESCRIPTION
        The purpose of a debugger such as GDB is to allow you to see
        what is going on "inside" another program while it executes
        - or what another program was doing at the moment it
        crashed.

        GDB can do four main kinds of things (plus other things in
        support of these) to help you catch bugs in the act:

        *   Start your program, specifying anything that might
            affect its behavior.

        *   Make your program stop on specified conditions.

        *   Examine what has happened, when your program has
            stopped.

        *   Change things in your program, so you can experiment
            with correcting the effects of one bug and go on to
            learn about another.

        You can use GDB to debug programs written in C, C@t{++},
        Fortran and Modula-2.

        GDB is invoked with the shell command "gdb".  Once started,
        it reads commands from the terminal until you tell it to
        exit with the GDB command "quit".  You can get online help
        from GDB itself by using the command "help".

        You can run "gdb" with no arguments or options; but the most
        usual way to start GDB is with one argument or two,
        specifying an executable program as the argument:

                   gdb program

        You can also start with both an executable program and a
        core file specified:

                   gdb program core

        You can, instead, specify a process ID as a second argument,
        if you want to debug a running process:

                   gdb program 1234
                   gdb -p 1234

        would attach GDB to process 1234 (unless you also have a
        file named 1234; GDB does check for a core file first).
        With option -p you can omit the program filename.

        Here are some of the most frequently needed GDB commands:

        break [file:]function
            Set a breakpoint at function (in file).

        run [arglist]
            Start your program (with arglist, if specified).

        bt  Backtrace: display the program stack.

        print expr
            Display the value of an expression.

        c   Continue running your program (after stopping, e.g. at a
            breakpoint).

        next
            Execute next program line (after stopping); step over
            any function calls in the line.

        edit [file:]function
            look at the program line where it is presently stopped.

        list [file:]function
            type the text of the program in the vicinity of where it
            is presently stopped.

        step
            Execute next program line (after stopping); step into
            any function calls in the line.

        help [name]
            Show information about GDB command name, or general
            information about using GDB.

        quit
            Exit from GDB.

        For full details on GDB, see Using GDB: A Guide to the GNU
        Source-Level Debugger, by Richard M. Stallman and Roland
        H. Pesch.  The same text is available online as the "gdb"
        entry in the "info" program.

OPTIONS
        Any arguments other than options specify an executable file
        and core file (or process ID); that is, the first argument
        encountered with no associated option flag is equivalent to
        a -se option, and the second, if any, is equivalent to a -c
        option if it's the name of a file.  Many options have both
        long and short forms; both are shown here.  The long forms
        are also recognized if you truncate them, so long as enough
        of the option is present to be unambiguous.  (If you prefer,
        you can flag option arguments with + rather than -, though
        we illustrate the more usual convention.)

        All the options and command line arguments you give are
        processed in sequential order.  The order makes a difference
        when the -x option is used.

        -help
        -h  List all options, with brief explanations.

        -symbols=file
        -s file
            Read symbol table from file file.

        -write
            Enable writing into executable and core files.

        -exec=file
        -e file
            Use file file as the executable file to execute when
            appropriate, and for examining pure data in conjunction
            with a core dump.

        -se=file
            Read symbol table from file file and use it as the
            executable file.

        -core=file
        -c file
            Use file file as a core dump to examine.

        -command=file
        -x file
            Execute GDB commands from file file.

        -ex command
            Execute given GDB command.

        -directory=directory
        -d directory
            Add directory to the path to search for source files.

        -nh Do not execute commands from ~/.gdbinit.

        -nx
        -n  Do not execute commands from any .gdbinit initialization
            files.

        -quiet
        -q  "Quiet".  Do not print the introductory and copyright
            messages.  These messages are also suppressed in batch
            mode.

        -batch
            Run in batch mode.  Exit with status 0 after processing
            all the command files specified with -x (and .gdbinit,
            if not inhibited).  Exit with nonzero status if an error
            occurs in executing the GDB commands in the command
            files.

            Batch mode may be useful for running GDB as a filter,
            for example to download and run a program on another
            computer; in order to make this more useful, the message

                          Program exited normally.

            (which is ordinarily issued whenever a program running
            under GDB control terminates) is not issued when running
            in batch mode.

        -cd=directory
            Run GDB using directory as its working directory,
            instead of the current directory.

        -fullname
        -f  Emacs sets this option when it runs GDB as a subprocess.
            It tells GDB to output the full file name and line
            number in a standard, recognizable fashion each time a
            stack frame is displayed (which includes each time the
            program stops).  This recognizable format looks like two
            \032 characters, followed by the file name, line number
            and character position separated by colons, and a
            newline.  The Emacs-to-GDB interface program uses the
            two \032 characters as a signal to display the source
            code for the frame.

        -b bps
            Set the line speed (baud rate or bits per second) of any
            serial interface used by GDB for remote debugging.

        -tty=device
            Run using device for your program's standard input and
            output.

SEE ALSO
        The full documentation for GDB is maintained as a Texinfo
        manual.  If the "info" and "gdb" programs and GDB's Texinfo
        documentation are properly installed at your site, the
        command

                   info gdb

        should give you access to the complete manual.

        Using GDB: A Guide to the GNU Source-Level Debugger, Richard
        M. Stallman and Roland H. Pesch, July 1991.

COPYRIGHT
        Copyright (c) 1988-2017 Free Software Foundation, Inc.

        Permission is granted to copy, distribute and/or modify this
        document under the terms of the GNU Free Documentation
        License, Version 1.3 or any later version published by the
        Free Software Foundation; with the Invariant Sections being
        "Free Software" and "Free Software Needs Free
        Documentation", with the Front-Cover Texts being "A GNU
        Manual," and with the Back-Cover Texts as in (a) below.

        (a) The FSF's Back-Cover Text is: "You are free to copy and
        modify this GNU Manual.  Buying copies from GNU Press
        supports the FSF in developing GNU and promoting software
        freedom."






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