该如何理解这段话？

[hitman]

TCPL中的
From the language's point of view, an exception is considered handled immediately upon entry into its handler so that any exceptions thrown while executing a handler must be dealt with by the callers of the try-block. For example ,this does not cause an infinit loop:

class Input_overflow{/*...*/};

void f()
{
try{
//...
}
catch(Input_overflow){
//...
throw Input_overflow();
}
}

[windindance]

在catch()里抛出异常会导致...问题,使程序直接终止.

[hitman]

为什么不会引起无限循环呢？

[jt80]

看不懂鸟语啊~~
throw Input_overflow()抛出异常~
catch(Input_overflow)捕获异常~~
如果你的程序里有异常,会导致程序终止啊~

[GRIEG]

catch语句只catch try抛出的异常。