(lldb)     connect
(lldb)     run
success

Condition of type: SIMPLE-TYPE-ERROR
Not a valid function name 2
No restarts available.

Top level in: #<process TOP-LEVEL>.
> 
Process 663 stopped
* thread #12, stop reason = signal SIGUSR1
    frame #0: 0x00000001d801d0d4 libsystem_kernel.dylib`read + 8
libsystem_kernel.dylib`read:
->  0x1d801d0d4 <+8>:  b.lo   0x1d801d0ec               ; <+32>
    0x1d801d0d8 <+12>: stp    x29, x30, [sp, #-0x10]!
    0x1d801d0dc <+16>: mov    x29, sp
    0x1d801d0e0 <+20>: bl     0x1d8010a64               ; cerror
Target 0: (repl) stopped.
(lldb) bt
warning: could not execute support code to read Objective-C class data in the process. This may reduce the quality of type information available.
* thread #12, stop reason = signal SIGUSR1
  * frame #0: 0x00000001d801d0d4 libsystem_kernel.dylib`read + 8
    frame #1: 0x0000000100c5a8f0 repl`asynchronous_signal_servicing_thread at unixint.d:600:21
    frame #2: 0x0000000100c0d894 repl`dispatch_fixed_0(narg=0) at cfun_dispatch.d:171:10
    frame #3: 0x0000000100bd88e0 repl`APPLY(n=0, fn=(repl`dispatch_fixed_0 at cfun_dispatch.d:153), x=0x000000010c0b8008) at apply.d:39:10
    frame #4: 0x0000000100bd8a60 repl`ecl_apply_from_stack_frame(frame=0x000000016f7aed40, x=0x000000010bd8ef00) at eval.d:55:24
    frame #5: 0x0000000100bd9248 repl`cl_apply(narg=0, fun=0x000000010bd8ef00, lastarg=0x0000000000000001) at eval.d:170:23
    frame #6: 0x0000000100c7594c repl`thread_entry_point(arg=0x000000010b869100) at process.d:273:42
    frame #7: 0x0000000100dc5bec repl`GC_inner_start_routine(sb=0x000000016f7aeef8, arg=0x000000010b7d9d80) at pthread_start.c:57:12
    frame #8: 0x0000000100dc18f8 repl`GC_call_with_stack_base(fn=(repl`GC_inner_start_routine at pthread_start.c:47), arg=0x000000010b7d9d80) at misc.c:1860:14
    frame #9: 0x0000000100dc710c repl`GC_start_routine(arg=0x000000010b7d9d80) at pthread_support.c:1666:14
    frame #10: 0x00000001d809d2c0 libsystem_pthread.dylib`_pthread_body + 128
    frame #11: 0x00000001d809d220 libsystem_pthread.dylib`_pthread_start + 44
    frame #12: 0x00000001d80a0cdc libsystem_pthread.dylib`thread_start + 4
(lldb) 
