gdb调试子进程
FROM：http://blog.csdn.net/wwwsq/archive/2006/09/01/1154786.aspx $ gdb someprog > set follow-fork-mode child > break somewhere > run someargs
FROM：http://blog.csdn.net/wwwsq/archive/2006/09/01/1154786.aspx $ gdb someprog > set follow-fork-mode child > break somewhere > run someargs