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GDB

Note: make sure to compile with -g.

Commands

Command	Description
b <file>:<line>	Breakpoint at file / line
bt	Show callstack
fin	Step out
c	Continue
l	Show lines around
n	Next line
r	Start program
s	Step in
tbreak	One-time breakpoint

Breakpoint

Formats:

• b <file>:<line>

Adds a breakpoint. Use tbreak for a one-time only break.

Continue

c. Go to the next breakpoint.

Next line

n or next.

Run

r. Starts the binary.

Show call stack

bt or backtrace. Show the current call stack.

Show next lines

l or list. Shows 10 lines around the current position.

Skip functions

It’s possible to always skip certain functions, such as std::move().

skip function move

Step in

s or step. Enters the function.

Step out

fin or finish. Exits the current function and goes back to the immediate caller.