export DEBUGINFOD_URLS="https://debuginfod.debian.net"

echo 'print __libc_dlopen_mode("/path/to/library.so", 2)' | gdb -p <PID>

GDB server stub for the ESP8266 that allows you to get a full symbolic C stack trace and do limited source level debugging.

Modular visual interface for GDB in Python.

This comes as a standalone single-file .gdbinit which, among the other things, enables a configurable dashboard showing the most relevant information during the program execution. Its main goal is to reduce the number of GDB commands issued to inspect the current program status allowing the programmer to focus on the control flow instead.

rr is a lightweight tool for recording and replaying execution of applications (trees of processes and threads). More information about the project, including instructions on how to install, run, and build rr, is at http://rr-project.org.

valgrind can run a gdb server so that a gdb can interact with it. valgrind has 2 options to trigger that:

--vgdb=yes,
--vgdb-error=0.

This second option tells valgrind it needs to wait for that many errors before freezing and wait for a gdb to connect. Setting it to 0 will make valgrind to wait for gdb to connect before executing the program.

valgrind --vgdb=yes --vgdb-error=0 ./foo
gdb ./foo
(gdb) target remote | vgdb

This is a very quick-and-dirty guide meant to get you started with the GNU Debugger, gdb, from the command line in a terminal. Often times gdb is run via an IDE, but many people out there shun IDEs for a variety of reasons, and this tutorial is for you!

A quick reminder on valgrind and gdb

Un débogueur graphique ultra cool pour linux