(lldb) h th b Show thread call stacks. Defaults to the current thread, thread indexes can be specified as arguments. Use the thread-index "all" to see all threads. Use the thread-index "unique" to see threads grouped by unique call stacks. Syntax: Command Options Usage: thread backtrace [-c <count>] [-s <frame-index>] [-e <boolean>] -c <count> ( --count <count> ) How many frames to display (-1 for all) -e <boolean> ( --extended <boolean> ) Show the extended backtrace, if available -s <frame-index> ( --start <frame-index> ) Frame in which to start the backtrace