$ lldb bin/mruby Current executable set to 'bin/mruby' (x86_64). (lldb) run test.rb Process 90966 launched: '~/mruby/bin/mruby' (x86_64) Process 90966 stopped * thread #1: tid = 0x22cf33, 0x000000010003f7e5 mruby`mrb_context_run(mrb=0x0000000100200000, proc=0x0000000101002a30, self=mrb_value at 0x00007fff5fbff678, stack_keep=0) + 6949 at vm.c:961, queue = 'com.apple.main-thread, stop reason = EXC_