Java GDB 输入不是来自终端

Question

我试图退出调试 session ，它要求用户输入以进行验证。 我尝试在我的代码中运行这个代码片段

    stdin.println("quit");
    stdin.flush();
    stdin.println("y");  // this does not work..
    stdin.flush();

但是没用..

我如何使用这个 java 外部程序向 gdb 发送输入？？

public class Debugger extends Thread{

        public void run(){
        Process p = null;
        try {
        p = Runtime.getRuntime().exec("gdb a.out --interpreter=console");
       new Thread(new SyncPipe(p.getErrorStream(), System.err)).start();
       new Thread(new SyncPipe(p.getInputStream(), System.out)).start();
        PrintWriter stdin = new PrintWriter(p.getOutputStream());

        stdin.flush();
        stdin.println("break main");
        stdin.flush();
        stdin.println("run");
        stdin.flush();
        stdin.println("s");
        stdin.flush();
        stdin.println("quit");
        stdin.flush();
        stdin.println("y");  // this does not work..
        stdin.flush();
       // stdin.close();


        } catch (Exception e) {
            e.printStackTrace();
        }
        }
    }

class SyncPipe implements Runnable
{

    public SyncPipe(InputStream istrm, OutputStream ostrm) {
      istrm_ = istrm;
      ostrm_ = ostrm;

  }

  public void run() {

      try
      {   
           int length;
           byte[] buffer = new byte[1024];

          for ( length = 0; (length = istrm_.read(buffer)) != -1; ){

              ostrm_.write(buffer, 0, length);
          } 

      }
      catch (Exception e)
      {
          e.printStackTrace();
      }


  }


  private final OutputStream ostrm_;
  private final InputStream istrm_;
}

GDB 输出:

GNU gdb (Ubuntu/Linaro 7.3-0ubuntu2) 7.3-2011.08
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /home/charmae/workspace/AVT/a.out...done.
(gdb) Breakpoint 1 at 0x804853d: file fileg.c, line 7.
(gdb) Starting program: /home/charmae/workspace/AVT/a.out 

Breakpoint 1, main () at fileg.c:7
7       printf("input of x: ");
(gdb) 8     scanf("%d",&x);
(gdb) A debugging session is active.

    Inferior 1 [process 6341] will be killed.

Quit anyway? (y or n) [answered Y; input not from terminal]

Answer 1

运行 gdb 设置 set confirm off

例如:

gdb -ex run -ex "set confirm off" --args ./program [arg1] [arg2] [arg3]