handle_post_mortem (Debugger)

    # File lib/ruby-debug-base.rb, line 147
        def handle_post_mortem(exp)
          return if !exp || !exp.__debug_context ||
            exp.__debug_context.stack_size == 0
          Debugger.suspend
          orig_tracing = Debugger.tracing, Debugger.current_context.tracing
          Debugger.tracing = Debugger.current_context.tracing = false
          Debugger.last_exception = exp
          handler.at_line(exp.__debug_context, exp.__debug_file, exp.__debug_line)
        ensure
          Debugger.tracing, Debugger.current_context.tracing = orig_tracing
          Debugger.resume
        end