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Full Discussion: Odd behavior from GDB while trying to cross-debug an embedded Linux application.
Top Forums Programming Odd behavior from GDB while trying to cross-debug an embedded Linux application. Post 303031458 by Corona688 on Thursday 28th of February 2019 02:02:01 PM
Old 02-28-2019
I really doubt the crash is erroneous.

Quote:
So why do I think the gdbserver error is erroneous? Well because both applications are using the same exact version of glibc.
Crashes inside libc are almost always programmer-caused. This one is easy to cause:

Code:
#include <stdlib.h>

int main(void) {
        void *p=malloc(1000);
        free(p);
        free(p); // crash
}

Quote:
In fact, the only differences between the two applications is the changes I made to the code and that code works, I know because I tested it.
Never call code good because it "just works", especially when it crashes. What exact changes did you make to what exact code?

It could be the debugger that's crashing, I suppose. Unlikely but plausible.
 

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LEARN ABOUT CENTOS

gdbinit

GDBINIT(5)						       GNU Development Tools							GDBINIT(5)

NAME

       gdbinit - GDB initialization scripts

SYNOPSIS

       /etc/gdbinit

       ~/.gdbinit

       ./.gdbinit

DESCRIPTION

       These files contain GDB commands to automatically execute during GDB startup.  The lines of contents are canned sequences of commands,
       described in the GDB manual in node "Sequences" -- shell command "info -f gdb -n Sequences".

       Please read more in the GDB manual in node "Startup" -- shell command "info -f gdb -n Startup".

       /etc/gdbinit
	   System-wide initialization file.  It is executed unless user specified GDB option "-nx" or "-n".  See more in the GDB manual in node
	   "System-wide configuration" -- shell command "info -f gdb -n 'System-wide configuration'".

       ~/.gdbinit
	   User initialization file.  It is executed unless user specified GDB options "-nx", "-n" or "-nh".

       ./.gdbinit
	   Initialization file for current directory.  It may need to be enabled with GDB security command "set auto-load local-gdbinit".  See
	   more in the GDB manual in node "Init File in the Current Directory" -- shell command "info -f gdb -n 'Init File in the Current
	   Directory'".

OPTIONS

SEE ALSO

       gdb(1), "info -f gdb -n Startup"

       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) 1988-2013 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."

gdb-Red Hat Enterprise Linux 7.6.1-51.el7			    2014-06-10								GDBINIT(5)
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