LLDB debugger skill for C/C++/Swift/Objective-C programs. Use when debugging with LLDB on macOS, FreeBSD, or Linux-clang environments, mapping GDB mental models to LLDB commands, using LLDB in Xcode or VS Code, or debugging Swift/Objective-C. Activates on queries about LLDB commands, GDB to LLDB mig

LLDB Purpose Guide agents through LLDB sessions and map existing GDB knowledge to LLDB. Covers command differences, Apple specifics, Python scripting, and IDE integration. Triggers "I'm on macOS and need to debug a C++ program" "How does LLDB differ from GDB?" "How do I do [GDB command] in LLDB?" "LLDB shows <unavailable for variables" "How do I use LLDB in VS Code?" "How do I write an LLDB Python script?" Workflow 1. Start LLDB 2. GDB → LLDB command map Source: <https://lldb.llvm.org/use/map.html GDB LLDB Notes run [args] process launch [args] / r continue process continue / c next thread step over / n step thread step in / s nexti thread step inst over / ni stepi thread step inst / si finish thread step out / finish break main breakpoint set n main / b main break file.c:42 breakpoint set f file.c l 42 / b file.c:42 break 0x400abc breakpoint set a 0x400abc / b a 0x400abc watch x watchpoint set variable x / wa s v x print x frame variable x / p x print/x x p/x x info locals frame variable / fr v info args frame variable arguments backtrace thread backtrace / bt frame N frame select N / f N info threads thread list thread N thread select N thread apply all bt thread backtrace all x/10wx addr memory read s4 fx c10 addr / x/10xw addr set var = 42 expression var = 42 / expr var = 42 quit quit / q 3. Breakpoints 4. Inspect state 5. Watchpoints 6. Threads 7. macOS / Apple specifics 8. VS Code integration Install the CodeLLDB extension. .vscode/launch.json : 9. LLDB Python scripting Load: command script import /path/to/myscript.py For a full GDB↔LLDB command map, see [references/gdb lldb map.md](references/gdb lldb map.md). Related skills Use skills/debuggers/gdb for GDB workflows Use skills/debuggers/core dumps for core dump analysis Use skills/compilers/clang for building with debug info