mac attach hang

[inevity]

Use example code，
exec rust-lldb -p 43329 -o 'expression looping = 0' -o finish
......
(lldb) type category enable Rust
(lldb) process attach --pid 43329
Process 43329 stopped

• thread Don't require import of debug_here to use the macro #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
  frame #0: 0x00000001040105fd testdebughere`debug_here::internal::debug_here_unixy_impl::hf6d1cf537d18380d(debugger=Option<&str> @ 0x00007ffeebbfca40) at internal.rs:111:5
  108
  109 // Now we enter an infinite loop and wait for the debugger to come to
  110 // our rescue
  -> 111 while looping {}
  112 }
  113
  114 /// Pop open a debugger on windows.
  Target 0: (testdebughere) stopped.

Executable module set to "/Users/xxxx/Downloads/testdebughere/target/debug/testdebughere".
Architecture set to: x86_64h-apple-macosx-.
(lldb) expression looping = 0
(bool) $0 = false
(lldb) finish
here hung!

Need two ctl +C,and only breaking at the 111 line.