LLDB

A debugger! It has some cool features that GDB probably doesn’t have. Like in gui mode you can use arrows to expand/collapse nested structures! But gui in LLDB is mostly a hacked around thing. You can’t even run commands within it.

• lldb -- prog arg1 arg2 - passing arguments (or even without --, dunno)
• b to set breakpoints; use help b for more info
• run or r - run!
• n, s - next, step into
• c for continue
• frame variable or fr v - print variables visible in the current frame
• frame select or fr s - print last selected frame
• frame select 2 or f 2 - select frames (0 is current frame, 1 is next in the call stack and so on)
• bt for backtrace
• gui or gu or ui for gui

Prints the variable when it’s accessed or changed.

• watchpoint set variable globalVar
• watchpoint set variable -w read | write | read_write globalVar
• w s v d.memberVar - for local variables. Also shorter commands

• kill - kill the process
• quit or q or CTRLD + D - quit

• Debugging C/C++ with LLDB Tutorial - YouTube
• GDB to LLDB command map — The LLDB Debugger
• PDR: LLDB Tutorial