枚举问题"没有命名类型"

Question

g++ (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5

我遇到了问题,我似乎发现了这个错误.

文件statemachine.h

#ifndef STATEMACHINE_H_INCLUDED
#define STATEMACHINE_H_INCLUDED

#include "port.h"

enum state {
    ST_UNINITIALIZED = 0x01,
    ST_INITIALIZED   = 0x02,
    ST_OPENED        = 0x03,
    ST_UNBLOCKED     = 0x04,
    ST_DISPOSED      = 0x05
};

void state_machine(event evt, port_t *port);

#endif /* STATEMACHINE_H_INCLUDED */

文件port.h

#ifndef PORT_H_INCLUDED
#define PORT_H_INCLUDED

#include <stdio.h>

#include "statemachine.h"

struct port_t {
    state current_state; /* Error 'state does not name a type */
    .
    .
};
#endif /* PORT_H_INCLUDED */

非常感谢任何建议,

Answer 1

可能是你在"statemachine.h"中的"port.h"和"port.h"中包含"statemachine.h"吗？

尝试删除该行:

#include "port.h"

从文件"statemachine.h"

编辑(根据Daniel的评论如下):

然后你需要转发声明你的port_t类型如下:

...
    ST_DISPOSED       = 0x05
};

struct port_t;

void state_machine(event evt, port_t *port);
...