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GDB and LLDB Debugger Snippets

Source: GDB to LLDB command map, Debugging Rust apps with GDB - LogRocket Blog, Debugging with GDB (GDB manual)

Note commands/aliases like run (r), step (s), and breakpoint (b) are similar or same with GDB and LLDB

Commands below are confirmed to work with rust-gdb

Terminal window
# Debug specific binary
rust-gdb target/debug/examples/basic


# Help information
help


# Quit
q


# Run
r


# Set breakpoint (break) on a function
b get_chip


# Set breakpoint on file and line number
b main.rs:22


# Breakpoint information
b info


# Breakpoint disable it
disable 1


# Breakpoint in temporary place, breakpoint will only occur once
tbreak 6


# Step - next, go to next line
n


# Step - step into like a function, run next line of code
s


# Step N - run next N lines of code
s Number


# Step - finish function
finish


# Step - continue execution until new breakpoint or end
c


# Repeat previous command
Enter


# Check incoming arguments
info args


# Print information on variable, function
print myvariable
p variable_name
p code_element


# Frame - check current code execution line
f
# Set - change state of variables
set var_name = my_value


# List - print source lines, print lines centered around line number
l 2
list 6
# List - print source around beginnning of function
list function_name

GDB

Section titled “GDB”
Terminal window
# Layout - See debugging location in source code
layout src
layout split


# Layout - remove layout
Ctrl + x a